geometry.rs: GbuffersInputs only in its tests; lockfiles: the pipeline crate takes naga

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Translated programs' types move to horizon-render-pipeline
2026-11-12 13:03:44 -10:00 · 2026-11-09 16:46:06 +01:00 · 2026-11-09 16:42:43 +01:00 · 2026-11-09 16:35:58 +01:00 · 2026-11-09 16:35:02 +01:00 · 2026-11-09 16:24:07 +01:00
1621 changed files with 31142 additions and 120575 deletions
@@ -1,16 +1,16 @@
-# Changes to these files wait for a council member's review (council poll P35, 2026-11-10) once branch protection requires code owners' reviews
+# Changes to these files wait for Ludovic's review once branch protection requires code owners' reviews
 # (tools/ci/protect_pipeline.sh, docs/security.md). They are what builds, signs and ships releases, the code that
 # checks downloads before installing them (backend.rs downloads, installs and updates the launcher itself; links.json
 # says where from; the Cargo.toml files pick the crates that do it), and this file. Everything else merges as soon as
 # `verify` passes.
-/.github/                                @horizon-rust/council
-/tools/ci/                               @horizon-rust/council
-/tools/release_train.py                  @horizon-rust/council
-/crates/horizon-release-sign/            @horizon-rust/council
-/crates/horizon-server/src/update.rs     @horizon-rust/council
-/crates/horizon-server/Cargo.toml        @horizon-rust/council
-/launcher/src/signed.rs                  @horizon-rust/council
-/launcher/src/backend.rs                 @horizon-rust/council
-/launcher/links.json                     @horizon-rust/council
-/launcher/Cargo.toml                     @horizon-rust/council
-/packaging/                              @horizon-rust/council
+/.github/                                @ludovic111
+/tools/ci/                               @ludovic111
+/tools/release_train.py                  @ludovic111
+/crates/horizon-release-sign/            @ludovic111
+/crates/horizon-server/src/update.rs     @ludovic111
+/crates/horizon-server/Cargo.toml        @ludovic111
+/launcher/src/signed.rs                  @ludovic111
+/launcher/src/backend.rs                 @ludovic111
+/launcher/links.json                     @ludovic111
+/launcher/Cargo.toml                     @ludovic111
+/packaging/                              @ludovic111
@@ -32,6 +32,13 @@
 <!-- The vanilla classes and methods this follows (tools/rea_vanilla.py), and the harness that checks it.
     "Horizon-only" for a feature vanilla doesn't have; "none" for tooling or docs. -->

+## Other projects' code
+
+<!-- "none", or for each project you read or copied from: its link at the commit, its license (only MIT,
+     BSD-2-Clause, BSD-3-Clause, Apache-2.0, ISC, zlib, 0BSD, MIT-0, Unlicense or CC0-1.0), and what you took.
+     CONTRIBUTING.md "Only original code". Shader packs: also the sections of docs/cleanroom/shader-packs-spec.md,
+     the documentation pages and the packs you used. -->
+
 ## Self-check

 <!-- Paste the block `python3 tools/pr_ready.py` prints (`--base upstream/main` from a fork). -->
@@ -13,3 +13,4 @@
 87152661 rdbtCVS         # added by Ludovic, 2026-10-27
 84875247 Online5277      # added by Ludovic, 2026-10-27 (his top three by merged pull requests)
 86072227 levzzz5154      # added by Ludovic, 2026-10-28 (Horizon Team; author of horizon-mixins)
+169198624 itarqos5        # added by Ludovic, 2026-11-08 (Discord Literal; Horizon Team)
@@ -36,9 +36,8 @@ jobs:
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
+      - uses: dtolnay/rust-toolchain@stable
        with:
-          toolchain: stable
          targets: ${{ matrix.target }}
      - name: The aarch64 Linux linker
        if: matrix.target == 'aarch64-unknown-linux-gnu'
@@ -1,5 +1,5 @@
 name: checks
-# verify: every pull request, every merge queue entry and every push to main (runners: see the job). It is the
+# verify: every pull request and every push to main, on GitHub's runners (the repository is public). It is the
 # check main requires, so it never has a condition: a skipped job counts as passed, and every run of this workflow
 # must report a real verify (a pull request that changes no Rust finishes it in seconds instead).
 # parity: the vanilla harnesses a pull request's changes can affect, on the Mac mini's runner, which holds the
@@ -7,15 +7,11 @@ name: checks
 # request that changes a harness, oracle, probe or the runner: the rest are checked on main by parity-main. A fork's pull
 # request runs it only when a maintainer adds the run-parity label (.github/workflows/run-parity.yml), so labels
 # never start this workflow. See docs/release-flow.md.
-# merge_group: the merge queue's commit (main's tip, the pull requests ahead in the queue and this one) runs verify
-# before it lands, on GitHub's runners; parity and launcher wait for main's push (docs/release-flow.md#merge-queue).
 on:
  push:
    branches: [main]
  pull_request:
    types: [opened, synchronize, reopened]
-  merge_group:
-    types: [checks_requested]
  workflow_dispatch:
 permissions:
  contents: read
@@ -23,8 +19,7 @@ concurrency:
  # A new push to a pull request replaces its running checks. On main, the running check finishes and only the
  # newest push waits behind it: GitHub cancels a waiting run when a newer one joins the group. A burst of merges
  # queued ~100 main runs on 2026-11-09; the release follows the newest finished main run (docs/release-flow.md).
-  # Each merge queue entry has a group of its own (its temporary branch), and nothing cancels it: the queue does.
-  group: checks-${{ github.event.pull_request.number || github.event.merge_group.head_ref || (github.event_name == 'push' && 'main') || github.sha }}
+  group: checks-${{ github.event.pull_request.number || (github.event_name == 'push' && 'main') || github.sha }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 env:
  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
@@ -34,23 +29,18 @@ jobs:
  # One job, not one per check: each job takes a runner from the organisation's shared pool, and with every pull request
  # and every merge to main starting this workflow, three jobs a run left the pool's queue tens of minutes deep.
  #
-  # Where (docs/ci-runners.md): our checks runners (label horizon-checks: the desktop's) take this repository's own
-  # pull requests whose number ends in 0 or 1, about what their three runners can do; GitHub's runners take the others,
-  # forks' pull requests and main's pushes (which also save the Rust cache GitHub's pull request runs read), so both
-  # pools work at once. The repository variable SELF_HOSTED_CI moves them: `all` every job to ours, `light` (the
-  # desktop paused) or `off` every job to GitHub's. A fork's pull request sees no repository variable, so no switch
-  # could move it off a machine that is off: it always runs on GitHub's. So does a merge queue's run, whatever
-  # SELF_HOSTED_CI says: its commit can hold a fork's code, which job-started.sh refuses on ours. On ours the build
-  # folder persists (CARGO_TARGET_DIR, outside the checkout), so the apt packages, Python and the Rust cache steps are
-  # GitHub's only.
+  # Where (docs/ci-runners.md): our checks runners (label horizon-checks: the desktop's, an isolated user, so a fork's
+  # pull request runs there too) take the pull requests whose number ends in 0 or 1, about what their three runners
+  # can do; GitHub's runners take the others and main's pushes (which also save the Rust cache GitHub's pull request
+  # runs read), so both pools work at once. The repository variable SELF_HOSTED_CI moves them: `all` every job to
+  # ours, `light` (the desktop paused) or `off` every job to GitHub's. On ours the build folder persists
+  # (CARGO_TARGET_DIR, outside the checkout), so the apt packages, Python and the Rust cache steps are GitHub's only.
  verify:
    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && github.event_name != 'merge_group' &&
-      (vars.SELF_HOSTED_CI == 'all' ||
-      github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository &&
-      (endsWith(format('{0}', github.event.pull_request.number), '0') ||
+      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && (vars.SELF_HOSTED_CI == 'all' ||
+      github.event_name == 'pull_request' && (endsWith(format('{0}', github.event.pull_request.number), '0') ||
      endsWith(format('{0}', github.event.pull_request.number), '1'))) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-24.04' }}
+      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
    timeout-minutes: 45
    steps:
      - uses: actions/checkout@v7
@@ -60,24 +50,22 @@ jobs:
        if: runner.environment == 'github-hosted'
        with:
          python-version: '3.12'
-      # A merge queue's run reads its commit against main's tip (merge_group's base and head).
      - name: Does this pull request need Rust checks?
-        if: github.event_name == 'pull_request' || github.event_name == 'merge_group'
+        if: github.event_name == 'pull_request'
        id: rust
        env:
-          BASE_SHA: ${{ github.event.pull_request.base.sha || github.event.merge_group.base_sha }}
-          HEAD_SHA: ${{ github.event.pull_request.head.sha || github.event.merge_group.head_sha }}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
        run: python3 tools/ci/rust_changes.py "$BASE_SHA" "$HEAD_SHA" >> "$GITHUB_OUTPUT"
-      # A pull request (or a merge queue entry) adds only its own commits to main, so it reads those; main's pushes
-      # read every ref's history.
+      # A pull request adds only its own commits to main, so it reads those; main's pushes read every ref's history.
      - name: Keep game artifacts out of Git
        env:
          EVENT: ${{ github.event_name }}
-          BASE_SHA: ${{ github.event.pull_request.base.sha || github.event.merge_group.base_sha }}
-          HEAD_SHA: ${{ github.event.pull_request.head.sha || github.event.merge_group.head_sha }}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
        run: |
          python tools/check_public_tree.py
-          if [ "$EVENT" = pull_request ] || [ "$EVENT" = merge_group ]; then
+          if [ "$EVENT" = pull_request ]; then
            python tools/check_public_tree.py --range "$BASE_SHA..$HEAD_SHA"
          else
            python tools/check_public_tree.py --history
@@ -92,25 +80,21 @@ jobs:
          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
          rustup default stable
          echo "WGPU_BACKEND=dx12" >> "$GITHUB_ENV"
-      # On a pull request, the next three checks compare with HEAD^1: the main that GitHub's merge commit puts the pull
-      # request on. pull_request.base.sha is main at the pull request's last push and falls behind, so main's own
-      # changes since then would count as the pull request's (#13874). A merge queue's entry compares with main's tip
-      # (merge_group.base_sha), whatever the queue's merge method makes of HEAD^1.
      # docs/layers.md: a crate depends only on its own layer or a lower one; today's exceptions only shrink.
      - name: Crates follow the layers
        env:
-          BASE: ${{ github.event_name == 'pull_request' && 'HEAD^1' || github.event.merge_group.base_sha || '' }}
-        run: python3 tools/check_layers.py ${BASE:+--base "$BASE"}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+        run: python3 tools/check_layers.py ${BASE_SHA:+--base "$BASE_SHA"}
      # docs/layers.md#built-in-addresses: every built-in outside address in the Horizon layer's home; the rest only shrinks.
      - name: Built-in addresses stay in their home
        env:
-          BASE: ${{ github.event_name == 'pull_request' && 'HEAD^1' || github.event.merge_group.base_sha || '' }}
-        run: python3 tools/check_addresses.py ${BASE:+--base "$BASE"}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+        run: python3 tools/check_addresses.py ${BASE_SHA:+--base "$BASE_SHA"}
      # docs/layers.md#file-size: a Rust file over 3000 lines may not grow (pull requests; main has no base to compare).
      - name: Big files don't grow
        env:
-          BASE: ${{ github.event_name == 'pull_request' && 'HEAD^1' || github.event.merge_group.base_sha || '' }}
-        run: python3 tools/check_file_size.py ${BASE:+--base "$BASE"}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+        run: python3 tools/check_file_size.py ${BASE_SHA:+--base "$BASE_SHA"}
      - name: Test offline research tooling
        run: python -m unittest discover -s tests -v
      - name: Install Rust toolchain and the ALSA and udev headers the client links against
@@ -123,7 +107,7 @@ jobs:
          fi
          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
      # Dependencies and the workspace's own build, saved from main's runs (pull requests read main's cache).
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: steps.rust.outputs.required != 'false' && runner.environment == 'github-hosted'
        with:
          shared-key: verify
@@ -132,35 +116,31 @@ jobs:
        if: steps.rust.outputs.required != 'false'
        run: |
          cargo +stable fmt --all -- --check
-          cargo +stable clippy --workspace --all-targets --locked -- -D warnings
+          cargo +stable clippy --workspace --all-targets -- -D warnings
          # The server build (released as horizon-engine): the game without sound or controllers.
-          cargo +stable clippy -p horizon-client --all-targets --locked --no-default-features -- -D warnings
+          cargo +stable clippy -p horizon-client --all-targets --no-default-features -- -D warnings
      # Libraries, binaries and integration tests, then doc tests: not the ~275 examples, which clippy above already
      # type-checks and the parity job builds and runs (they were most of this step's build and link time).
-      # cargo test --locked, not nextest: nextest's process per test reloads each binary's shared tables for every test, and on
+      # cargo test, not nextest: nextest's process per test reloads each binary's shared tables for every test, and on
      # these 4-core runners it was no faster (#4978).
      - name: Test Rust core and voxel kernel correctness
        if: steps.rust.outputs.required != 'false'
        run: |
-          cargo +stable test --locked --workspace --lib --bins --tests
+          cargo +stable test --workspace --lib --bins --tests
          # The full content-root tests (#[ignore]d: minutes each on a laptop). The same build as above; they need the
          # prepared vanilla data, so without it they pass at once. Keep the target selection identical to avoid
          # recompiling the workspace with a different dependency graph.
-          cargo +stable test --locked --workspace --lib --bins --tests mod_content::tests:: -- --ignored
-          cargo +stable test --locked --workspace --doc
+          cargo +stable test --workspace --lib --bins --tests mod_content::tests:: -- --ignored
+          cargo +stable test --workspace --doc
  # The launcher is its own workspace (launcher/Cargo.toml), so verify's cargo runs never build it. A pull request that
  # changes it or a crate it builds is checked here, and so is every push to main: two pull requests can each pass
-  # alone and break it together (#2059 and the registry ratings did, 2026-10-26). Not in the merge queue: no check of
-  # its is required, so the queue wouldn't wait for it, and main's push runs it anyway.
+  # alone and break it together (#2059 and the registry ratings did, 2026-10-26).
  launcher:
-    if: github.event_name != 'merge_group'
    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && github.event_name != 'merge_group' &&
-      (vars.SELF_HOSTED_CI == 'all' ||
-      github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository &&
-      (endsWith(format('{0}', github.event.pull_request.number), '0') ||
+      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && (vars.SELF_HOSTED_CI == 'all' ||
+      github.event_name == 'pull_request' && (endsWith(format('{0}', github.event.pull_request.number), '0') ||
      endsWith(format('{0}', github.event.pull_request.number), '1'))) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-24.04' }}
+      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
    timeout-minutes: 45
    steps:
      - uses: actions/checkout@v7
@@ -183,7 +163,7 @@ jobs:
              libx11-xcb-dev libfontconfig-dev libvulkan-dev libasound2-dev libudev-dev
          fi
          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: steps.launcher.outputs.required != 'false' && runner.environment == 'github-hosted'
        with:
          workspaces: launcher
@@ -216,14 +196,13 @@ jobs:
        run: |
          $cores = (Get-CimInstance Win32_Processor | Measure-Object -Property NumberOfLogicalProcessors -Sum).Sum
          "CARGO_BUILD_JOBS=$cores" >> $env:GITHUB_ENV
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
+      - uses: dtolnay/rust-toolchain@stable
        with:
-          toolchain: stable
          targets: aarch64-pc-windows-msvc
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        with:
          shared-key: windows-arm64-game
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        with:
          workspaces: launcher
          shared-key: windows-arm64-launcher
@@ -238,17 +217,17 @@ jobs:
          $clang = Get-Command clang -ErrorAction Stop
          Write-Output "Using $($clang.Source)"
          & $clang.Source --version
-      - name: Build the game for native Windows ARM64 (the official game, as game-build.yml ships it)
-        run: cargo build --release --locked --target aarch64-pc-windows-msvc -p horizon-official --bin horizon-official -p horizon-client-lib --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
+      - name: Build the game for native Windows ARM64
+        run: cargo build --release --locked --target aarch64-pc-windows-msvc -p horizon-client -p horizon-client-lib --bin horizon-client --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
      - name: Check the game's PE machine
-        run: python tools/check_pe_arch.py arm64 target/aarch64-pc-windows-msvc/release/horizon-official.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
+        run: python tools/check_pe_arch.py arm64 target/aarch64-pc-windows-msvc/release/horizon-client.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
      - name: Check game DLL imports
-        run: python tools/check_imports.py target/aarch64-pc-windows-msvc/release/horizon-official.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
+        run: python tools/check_imports.py target/aarch64-pc-windows-msvc/release/horizon-client.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
      - name: Start every game executable
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'
-          $client = 'target/aarch64-pc-windows-msvc/release/horizon-official.exe'
+          $client = 'target/aarch64-pc-windows-msvc/release/horizon-client.exe'
          $output = & $client --help 2>&1
          if ($LASTEXITCODE -ne 0 -or ($output -join "`n") -notmatch '--resources') { throw 'horizon-client --help failed' }
          foreach ($binary in @('horizon-ctl.exe', 'horizon-prepare.exe', 'horizon-server.exe')) {
@@ -331,8 +310,358 @@ jobs:
      head: ${{ github.event.pull_request.head.sha }}
      full: ${{ contains(github.event.pull_request.labels.*.name, 'full-parity') }}
      frame_identity: ${{ contains(github.event.pull_request.labels.*.name, 'frame-identity') }}
-  # JFR analysis uses JDK-generated fixture recordings on the self-hosted Linux runner.
-  # Start a manual checks dispatch with: gh workflow run checks --ref <branch>.
+  # Horizon never downloads the game. These jobs need a self-hosted Linux runner
+  # (label horizon-game) holding the maintainer's own copy: the official launcher's
+  # game directory in HORIZON_MINECRAFT_DIR and the pinned server jar in
+  # HORIZON_SERVER_JAR. Start them by hand: gh workflow run checks --ref <branch>.
+  vanilla-parity:
+    if: github.event_name == 'workflow_dispatch'
+    runs-on: [self-hosted, linux, horizon-game]
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v7
+        with:
+          python-version: '3.12'
+      - name: Install Rust toolchain
+        run: rustup toolchain install stable --profile minimal
+      - uses: actions/setup-java@v6
+        with:
+          distribution: temurin
+          java-version: '25'
+      - name: Compare Rust foundations with pinned vanilla client and server bytecode
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_rust_parity.py --prepare
+      - name: Check Rust world-data interoperability with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_world_parity.py
+      - name: Compare scheduled ticks and saved tick data with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_tick_parity.py
+      - name: Compare simulation geometry and cached block collision shapes
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: |
+          python tools/test_geometry_parity.py
+          python tools/test_collision_parity.py
+      - name: Compare noise samplers and density kernels with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_noise_parity.py
+      - name: Compare compiled density samplers with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_density_parity.py
+      - name: Compare world-generation JSON codecs with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_worldgen_parity.py
+      - name: Compare heightmap predicates and chunk mutations with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_heightmap_parity.py
+      - name: Compare pre-light chunk status transitions and block writes
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_chunk_stage_parity.py
+      - name: Compare feature placement into resident neighboring chunks
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_feature_region_parity.py
+      - name: Compare nested feature selectors and sequences
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_feature_graph_parity.py
+      - name: Compare named feature holders and placed-feature tags
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_feature_catalog_parity.py
+      - name: Compare configured fill-layer block placement
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_fill_layer_parity.py
+      - name: Compare replacement-rule codecs and evaluation
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_rule_test_parity.py
+      - name: Compare simple-block placement and feature composition
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_simple_block_parity.py
+      - name: Compare block-column sampling and obstruction
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_column_parity.py
+      - name: Compare vertical pillars and cap feature placement
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_pillar_parity.py
+      - name: Compare exactly-one-neighbor feature spreading
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_neighbor_spread_parity.py
+      - name: Compare block-pile support and placement
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_pile_parity.py
+      - name: Compare disk replacement and postprocessing
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_disk_parity.py
+      - name: Compare block-blob support search and geometry
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_blob_parity.py
+      - name: Compare spring placement and fluid tick scheduling
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_spring_parity.py
+      - name: Compare vine attachment priority and placement
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_vines_parity.py
+      - name: Compare underwater magma floor scans and occlusion
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_underwater_magma_parity.py
+      - name: Compare blue-ice seeding and growth attempts
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_blue_ice_parity.py
+      - name: Compare spike geometry and discontinuous roots
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_spike_parity.py
+      - name: Compare End podium construction and destruction requests
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_end_podium_parity.py
+      - name: Rust End gateway parity
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_end_gateway_parity.py
+      - name: Compare bonus chest placement and conditional loot seeding
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_bonus_chest_parity.py
+      - name: Compare recursive chorus generation and connection refreshes
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_chorus_plant_parity.py
+      - name: Compare small speleothem patches and waterlogged points
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_speleothem_parity.py
+      - name: Compare replacement blob search and Manhattan shells
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_replace_blobs_parity.py
+      - name: Compare bamboo stalks, podzol patches and leafy caps
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_bamboo_parity.py
+      - name: Compare Nether delta rims and shifted contents
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_delta_parity.py
+      - name: Compare biome freezing and snow eligibility
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_weather_parity.py
+      - name: Compare frozen top layers and snowy ground updates
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_snow_freeze_parity.py
+      - name: Compare generation-stage tick storage and routing
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_generation_tick_parity.py
+      - name: Compare below-zero upgrade metadata codecs
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_retrogen_data_parity.py
+      - name: Compare below-zero upgrade lifecycle and block transformations
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_retrogen_chunk_parity.py
+      - name: Compare chunk-status metadata, ordering and codecs
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_chunk_status_parity.py
+      - name: Compare proto-chunk block-entity storage and coordinates
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_entity_storage_parity.py
+      - name: Compare ordered single-block replacement features
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_replace_block_parity.py
+      - name: Compare scattered ore placement and air-exposure checks
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_scattered_ore_parity.py
+      - name: Compare resident bulk-section access and raw writes
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_bulk_section_parity.py
+      - name: Compare biome feature ordering and cycle detection
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_feature_sort_parity.py
+      - name: Compare world-generation random wrappers and seeding
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_worldgen_random_parity.py
+      - name: Compare biome filtering and top-level feature context
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_placement_parity.py
+      - name: Compare biome decoration feature scheduling and seeding
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_decoration_parity.py
+      - name: Compare decoration against resident biome and terrain sections
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_decoration_region_parity.py
+      - name: Compare block-state provider choices and rotation
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_state_provider_parity.py
+      - name: Compare contained fluids and height queries with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_fluid_parity.py
+      - name: Compare entity obstruction with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_entity_obstruction_parity.py
+      - name: Compare block solidity and replaceability with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_properties_parity.py
+      - name: Compare face slicing and block support with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_face_support_parity.py
+      - name: Compare cached block support with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_support_parity.py
+      - name: Compare dynamic block support with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_dynamic_support_parity.py
+      - name: Compare moving-piston collision and interpolation with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_piston_shape_parity.py
+      - name: Compare supported block survival rules with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_survival_parity.py
+      - name: Compare noise-stage chunk filling with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_terrain_parity.py
+      - name: Compare structure terrain-adaptation density with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_structure_density_parity.py
+      - name: Compare seeded material bands and surface queries with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_material_surface_parity.py
+      - name: Compare material condition codecs and rule evaluation with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_material_condition_parity.py
+      - name: Compare biome temperatures and cache behavior with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_temperature_parity.py
+      - name: Compare badlands and frozen-ocean extensions with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_material_extension_parity.py
+      - name: Compare bundled material-rule libraries with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_material_rule_library_parity.py
+      - name: Compare fixed, checkerboard and End biome sources with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_source_parity.py
+      - name: Compare seeded cave paths and failure state with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_cave_carver_parity.py
+      - name: Compare seeded canyon paths and width factors with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_canyon_carver_parity.py
+      - name: Compare initial block-writing feature algorithms with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_basic_feature_parity.py
+      - name: Compare feature placement chains with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_feature_placement_parity.py
+      - name: Compare feature placement primitives with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_placement_parity.py
+      - name: Compare anchored height providers with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_height_provider_parity.py
+      - name: Compare scalar value providers with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_value_provider_parity.py
+      - name: Compare cave and canyon geometric primitives with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_carving_geometry_parity.py
+      - name: Compare carving-mask traversal and callback mutations with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_carving_mask_parity.py
+      - name: Compare registry-bound biome-source codecs with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_source_codec_parity.py
+      - name: Compare all four biome-source kinds in chunk generation with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_generation_parity.py
+      - name: Compare chunk biome filling and failure state with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_chunk_parity.py
+      - name: Compare biome zoom and seed obfuscation with pinned vanilla
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_biome_zoom_parity.py
+      - name: Compare surface-stage chunks with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_material_stage_parity.py
+      - name: Compare block-state JSON codecs with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_block_state_codec_parity.py
+      - name: Compare vertical anchors with pinned vanilla client and server
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_anchor_parity.py
+      - name: Compare float logarithms at domain and rounding boundaries
+        env:
+          RUSTUP_TOOLCHAIN: stable
+        run: python tools/test_float_log_parity.py
  jfr-analysis:
    if: github.event_name == 'workflow_dispatch'
    runs-on: [self-hosted, linux, horizon-game]
@@ -50,9 +50,7 @@ jobs:
          ref: ${{ inputs.ref }}
          persist-credentials: false
          clean: true
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
-        with:
-          toolchain: stable
+      - uses: dtolnay/rust-toolchain@stable
      - run: bash tools/ci/runner-env.sh
        env:
          HORIZON_NO_SCCACHE: ${{ inputs.trusted && '1' || '' }}
@@ -158,11 +156,10 @@ jobs:
          # may end up in a release. target/ is rebuilt from scratch; .local/ is relinked by vanilla-data.sh, which
          # keeps its preparations outside the checkout.
          clean: true
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
+      - uses: dtolnay/rust-toolchain@stable
        with:
-          toolchain: stable
          targets: ${{ matrix.target }}
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: runner.environment == 'github-hosted' && !matrix.musl
        with:
          # A release restores only what a release saved: an untrusted build has its own key and saves nothing.
@@ -171,14 +168,9 @@ jobs:
      - name: ALSA and udev headers
        if: runner.os == 'Linux' && !matrix.musl
        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
-      - name: Build the official game, horizon-ctl, horizon-prepare and horizon-server
+      - name: Build the client, horizon-ctl, horizon-prepare and horizon-server
        if: ${{ !matrix.musl }}
-        run: cargo build --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} -p horizon-official --bin horizon-official -p horizon-client-lib --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
-      - name: The official game is the game players get, under its name
-        # horizon-official: horizon-client's game with Horizon's own parts plugged in (docs/layers.md, "How a
-        # Horizon crate plugs in"). Everything below, the launcher and players know it as horizon-client.
-        if: ${{ !matrix.musl }}
-        run: cp -f "$BIN/horizon-official${{ matrix.exe }}" "$BIN/horizon-client${{ matrix.exe }}"
+        run: cargo build --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} -p horizon-client -p horizon-client-lib --bin horizon-client --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
      - name: Every program the release folder takes was built
        if: ${{ !matrix.musl }}
        run: |
@@ -173,11 +173,10 @@ jobs:
          # Always from a clean checkout, the Mac mini's runner too: its work folder is shared with pull requests'
          # parity jobs, and nothing they leave may end up in a launcher release (target/ is rebuilt from scratch).
          clean: true
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
+      - uses: dtolnay/rust-toolchain@stable
        with:
-          toolchain: stable
          targets: ${{ matrix.target }}
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: runner.environment == 'github-hosted'
        with:
          workspaces: launcher
@@ -202,9 +201,6 @@ jobs:
      - name: Verify Windows executable architecture
        if: runner.os == 'Windows'
        run: python ../tools/check_pe_arch.py "${{ matrix.pe_arch }}" "$BIN/${{ matrix.binary }}"
-      - name: Unrelated DLLs cannot intercept launcher or setup startup
-        if: runner.os == 'Windows'
-        run: python ../tools/test_launcher_dll_search.py "$BIN/${{ matrix.binary }}"
      - name: The version is the release's
        run: |
          out=$("$BIN/${{ matrix.binary }}" --version)
@@ -20,12 +20,8 @@ concurrency:
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 jobs:
  check:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's. A fork's
-    # pull request sees no repository variable, so it always runs on GitHub's (it would wait for the desktop when off).
-    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' &&
-      (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's.
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
    timeout-minutes: 20
    defaults:
      run:
@@ -34,7 +30,7 @@ jobs:
      - uses: actions/checkout@v7
      - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy
      # Ours keep their build folder between jobs.
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: runner.environment == 'github-hosted'
        with:
          workspaces: crates/horizon-mod-registry
@@ -181,7 +181,7 @@ jobs:
          musl=(); if [[ -f dist/horizon-linux-musl-x86_64.tar.gz ]]; then musl=(dist/horizon-linux-musl-x86_64.tar.gz)
          else echo "::warning::horizon-linux-musl-x86_64.tar.gz is missing: SHA256SUMS goes out without it"; fi
          bash tools/ci/sign_release.sh nightly dist/horizon-linux-x86_64.tar.gz dist/horizon-windows-x64.zip \
-            ${arm64[@]+"${arm64[@]}"} ${musl[@]+"${musl[@]}"} \
+            "${arm64[@]}" "${musl[@]}" \
            dist/horizon-macos-arm64.zip dist/horizon-macos-x64.zip dist/horizon-server-linux-x86_64.tar.gz \
            dist/horizon-source.tar.gz
      - uses: actions/upload-artifact@v7
@@ -267,9 +267,9 @@ jobs:
          gh release create nightly --prerelease --latest=false --target "$SHA" \
            --title "Nightly $DATE · ${SHA:0:7}" --notes-file dist/nightly-notes.md \
            "dist/horizon-linux-x86_64.tar.gz#Game files the launcher installs (Nightly): Linux (horizon-linux-x86_64.tar.gz)" \
-            ${musl[@]+"${musl[@]}"} \
+            "${musl[@]}" \
            "dist/horizon-windows-x64.zip#Game files the launcher installs (Nightly): Windows (horizon-windows-x64.zip)" \
-            ${arm64[@]+"${arm64[@]}"} \
+            "${arm64[@]}" \
            "dist/horizon-macos-arm64.zip#Game files the launcher installs (Nightly): macOS on Apple Silicon (horizon-macos-arm64.zip)" \
            "dist/horizon-macos-x64.zip#Game files the launcher installs (Nightly): macOS on Intel (horizon-macos-x64.zip)" \
            "dist/horizon-server-linux-x86_64.tar.gz#Nightly dedicated server for Linux (horizon-server-linux-x86_64.tar.gz)" \
@@ -55,10 +55,8 @@ jobs:
          persist-credentials: false
          # Keeps .local/ (parity state, probe builds, the previous audit) and target/.
          clean: false
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
+      - uses: dtolnay/rust-toolchain@stable
        if: steps.when.outputs.run == 'true'
-        with:
-          toolchain: stable
      - name: Tools from the runner
        if: steps.when.outputs.run == 'true'
        run: bash tools/ci/runner-env.sh
@@ -38,7 +38,7 @@ jobs:
            sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
          fi
          rustup toolchain install stable --profile minimal
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: runner.environment == 'github-hosted'
        with:
          shared-key: pack-bench
@@ -37,9 +37,7 @@ jobs:
          persist-credentials: false
          # Keeps .local/ (parity state, probe builds, oracle results) and target/ between runs.
          clean: false
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
-        with:
-          toolchain: stable
+      - uses: dtolnay/rust-toolchain@stable
      - name: Tools from the runner
        run: bash tools/ci/runner-env.sh
      - name: Vanilla data, and resources prepared by this preparer
@@ -60,18 +58,6 @@ jobs:
          echo "Merges since ${BASE_SHA}:"
          git log --first-parent --format='  %h %s' "$BASE_SHA..HEAD"
          python3 tools/parity.py --changed "$BASE_SHA" --timeout 2400
-      - name: Preserve the initial failure logs
-        if: steps.harnesses.outcome == 'failure'
-        run: |
-          rm -rf .local/parity-main-logs && cp -R .local/parity-runner/logs .local/parity-main-logs 2>/dev/null || true
-      - name: Upload the initial failure logs
-        if: steps.harnesses.outcome == 'failure'
-        uses: actions/upload-artifact@v7
-        with:
-          name: parity-main-logs
-          path: .local/parity-main-logs/
-          if-no-files-found: warn
-          retention-days: 7
      - name: A flake, or the merge that broke them
        if: steps.harnesses.outcome == 'failure'
        env:
@@ -79,4 +65,13 @@ jobs:
          PARITY_HOSTS: ''
          BASE_SHA: ${{ steps.base.outputs.sha }}
        run: |
+          rm -rf .local/parity-main-logs && cp -R .local/parity-runner/logs .local/parity-main-logs 2>/dev/null || true
          python3 tools/parity_main.py bisect "$BASE_SHA" --comment
+      - name: Logs of the failed harnesses
+        if: steps.harnesses.outcome == 'failure'
+        uses: actions/upload-artifact@v7
+        with:
+          name: parity-main-logs
+          path: .local/parity-main-logs/
+          if-no-files-found: ignore
+          retention-days: 7
@@ -71,9 +71,7 @@ jobs:
            echo "::warning::head ${HEAD_SHA:0:9} conflicts with main ${main:0:9}: tested alone, without main's fixes"
            echo "Tested: head ${HEAD_SHA:0:9} alone (it conflicts with main ${main:0:9})" | tee -a "$GITHUB_STEP_SUMMARY"
          fi
-      - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable, 2026-11
-        with:
-          toolchain: stable
+      - uses: dtolnay/rust-toolchain@stable
      - name: Tools from the runner
        run: bash tools/ci/runner-env.sh
      - name: Vanilla data, and resources prepared by this preparer
@@ -1,34 +0,0 @@
-name: runner watch
-# Every 30 minutes: one issue when jobs wait over 2 hours for a self-hosted runner nobody runs (the maintainer's
-# machines are off), closed again once nothing waits (tools/ci/runner_watch.py, docs/operations.md). It runs on
-# GitHub's runners, never ours: it must work when every self-hosted runner is gone.
-#   gh workflow run "runner watch" -f dry_run=true
-on:
-  schedule:
-    - cron: '11,41 * * * *'
-  workflow_dispatch:
-    inputs:
-      dry_run:
-        description: Only print what it would do with the issue
-        type: boolean
-        default: false
-permissions:
-  actions: read
-  contents: read
-  issues: write
-concurrency:
-  group: runner-watch
-  cancel-in-progress: false
-
-jobs:
-  watch:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          persist-credentials: false
-      - name: Jobs waiting for a self-hosted runner
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: python3 tools/ci/runner_watch.py ${{ inputs.dry_run && '--dry-run' || '' }}
@@ -20,12 +20,8 @@ concurrency:
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 jobs:
  check:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's. A fork's
-    # pull request sees no repository variable, so it always runs on GitHub's (it would wait for the desktop when off).
-    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' &&
-      (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's.
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
    timeout-minutes: 20
    defaults:
      run:
@@ -34,7 +30,7 @@ jobs:
      - uses: actions/checkout@v7
      - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy
      # Ours keep their build folder between jobs.
-      - uses: Swatinem/rust-cache@d1527c8f67ef9af357290475d4af4b0fab8f12e0 # v2.9.3
+      - uses: Swatinem/rust-cache@v2
        if: runner.environment == 'github-hosted'
        with:
          workspaces: crates/horizon-telemetry-server
@@ -1,9 +1,7 @@
 # Horizon: a map for agents

 Minecraft: Java Edition 26.3 rewritten in Rust (wgpu). Vanilla is the specification wherever it has the
-feature; performance work may differ inside as long as it stays compatible with vanilla
-([CONTRIBUTING.md](CONTRIBUTING.md#when-it-doesnt-have-to-be-11)). Read [CONTRIBUTING.md](CONTRIBUTING.md) once;
-this page tells you where things are.
+feature. Read [CONTRIBUTING.md](CONTRIBUTING.md) once; this page tells you where things are.
 Feature → files → harness for the most-changed areas: [docs/architecture.md](docs/architecture.md).

 ## Rules that bite
@@ -37,6 +35,7 @@ Feature → files → harness for the most-changed areas: [docs/architecture.md]
 - Small PRs (< ~500 lines). Labels: `feature` (players get something new), `skip-release` (they see no
  change), none for a fix. Agents never add `release-now`: the maintainer decides it. Merges ship in batches of 5, or after
  6 hours ([docs/release-flow.md](docs/release-flow.md)).
+- Contributors first: `gh pr list --state open --search <area>` before you start; never duplicate theirs.
 - **No hardcoded user-facing strings.** Keep UI translation-ready from the start. In the launcher (`launcher/`), wrap visible text with `tr("...")` or `trf("... {arg} ...", &[("arg", &val)])` from `crate::i18n` instead of raw string literals or `format!`. In the game, use translation keys (`Text::tr`, `lang::get`), never hardcoded English strings.
 - **Claim before you start**: comment `/claim` on the issue (no issue yet: open one, then claim it). An assigned
  issue is taken, and so is one labelled `in progress` (claimed on Discord): pick another. `/unclaim` when you stop;
@@ -45,31 +44,6 @@ Feature → files → harness for the most-changed areas: [docs/architecture.md]
 - **Machine translations stay unreviewed.** `tools/lang_review/` records only text a person who speaks the language
  wrote or checked; never `lang_coverage.py --mark-reviewed` machine text ([docs/translations.md](docs/translations.md)).
 - **Controllers reach what registers.** Draw controls with a registering helper (`ui::button`, `settings_shell::foot_button`); `graphics_style::button` and `screen_draw::button` only paint, and registering one part of a screen ends its crosshair, so register all of it.
- **Render passes keep HDR's light.** A pass that reads, filters or redraws the world's picture (upscaling,
-  anti-aliasing, sharpening, frame generation, post effects, captures) follows [docs/hdr-passes.md](docs/hdr-passes.md).
-
-## Don't lose time
-
-Where agent time went, measured on sessions and CI in November 2026: reading code, compiling `horizon-client`,
-waiting in loops, and work someone else had already done. Tests were a small part.
-
- **Check nobody else is on it.** One in three pull requests closed unmerged was a duplicate. Before you write
-  code, look at the issue's linked pull requests and run
-  `gh pr list --state open --search "<issue number, function or file name>"`; then `/claim`.
- **Find code with the map, not by reading.** Start from the tables below and
-  `python3 tools/port_ledger.py where Class.method`. Read the function you change and its callers, not whole
-  files.
- **Compile cheaply while you work.** `cargo check -p <crate>` after an edit. Clippy, fmt and tests run once, at
-  the end, through `pr_ready.py`. `cargo clippy -p horizon-client` and `cargo build -p horizon-client` are the
-  slowest commands here: never after every edit, and build the game only when you need to run it.
- **Don't wait in loops.** Start a long command in the background and carry on, or wait for it once. No
-  `sleep` or `until grep` polling of builds, harnesses or CI.
- **One test per changed behaviour.** None for a refactor or a file move, none that reads source text, and no
-  harness where vanilla has nothing to compare (Horizon's own features, performance work).
- **A red check isn't always yours.** When `verify` fails in a test your change can't reach, say so in the pull
-  request and move on; don't hunt it.
- **Unsure about a rule? Finish the work.** Take the reading that lets you finish, and say in the pull request
-  which one you took. Don't stop, and don't change direction halfway.

 ## Crates

@@ -105,7 +79,6 @@ Game workspace (root `Cargo.toml`); `launcher/` and `crates/horizon-telemetry-se
 | `horizon-telemetry`, `horizon-telemetry-server`, `horizon-bench` | Opt-in data collection, its ingest server, the benchmark report format |
 | `horizon-system` | The machine the game runs on (OS, CPU, memory, drive, power, GPU maker and memory), for the crash report, the renderer's GPU info and telemetry |
 | `horizon-platform` | The platform's public API: what the Horizon layer may use of the engine ([docs/layers.md](docs/layers.md)); re-exports `horizon-system` today |
-| `horizon-hooks`, `horizon-game`, `horizon-official`, `horizon-heartbeat` | The layer seam: the engine's hooks for crates above it, the game an executable starts, the official executable (shipped as `horizon-client`) that registers Horizon's in-game parts, the first of them ([docs/layers.md](docs/layers.md#how-a-horizon-crate-plugs-in)) |
 | `horizon-dualsense`, `horizon-threads`, `horizon-release-sign`, `horizon-bots`, `xtask` | DualSense output, thread priorities, signed release checksums, load-test bots, repo tasks |
 | `launcher/` | GPUI launcher: `main.rs` (UI), `backend.rs` (installs, updates), `cli.rs`, `mcp.rs`, `*_page.rs` |

@@ -120,7 +93,6 @@ reads `README.md`, `launcher/links.json`, `docs/api/`, `roadmap/roadmap.json` an
 - Use independent expected values or a vanilla oracle; do not derive the answer from the code under test.
 - Test outcomes, not only calls to stubs. Use mocks to isolate behavior, not as the behavior itself.
 - Skip tests of trivial constants, derives and getters, or behavior already covered by another test.
- One test per changed behaviour is enough. A refactor or a move that changes no behaviour gets no new test.
 - Avoid pinning implementation details; a harmless refactor should not break a behavior test.
 - Make slow tests faster without removing cases or weakening their coverage.
 - Never delete parity harnesses or tests that pin vanilla behaviour: they are the spec.
@@ -128,8 +100,8 @@ reads `README.md`, `launcher/links.json`, `docs/api/`, `roadmap/roadmap.json` an
 ## Build and test fast

 ```sh
-python3 tools/pr_ready.py                  # the self-check: fmt, clippy -D warnings, touched crates' tests; paste its block in the PR
-python3 tools/pr_ready.py --harnesses      # also the affected harnesses (by default only when you change a harness, oracle, probe or the runner, as in CI)
+python3 tools/pr_ready.py                  # the self-check: fmt, clippy -D warnings, touched crates' tests, harnesses; paste its block in the PR
+python3 tools/pr_ready.py --quick          # same without harnesses
 cargo test -p horizon-client -p horizon-client-lib --lib --bins --tests   # skips the examples (pr_ready does this); `--doc` separately
 cargo test -p horizon-client-lib --lib mod_content::tests:: -- --ignored   # the slow content-root tests, #[ignore]d; pr_ready runs them when mod content, assets, blocks or items change
 cargo build --profile fast -p horizon-client        # optimized, quick to link: use it to play or run lan_e2e
@@ -138,8 +110,7 @@ python3 tools/parity.py --changed-files paths.txt --list   # which harnesses cov
 python3 tools/parity.py mob_ai sculk       # named harnesses
 python3 tools/lan_e2e.py --check chest     # two real games over LAN (server-thread host)
 python3 tools/agent_control_e2e.py         # horizon-ctl / MCP end to end
-python3 tools/lang_coverage.py --summary   # one line per language: how many keys it carries and what it misses
-python3 tools/lang_coverage.py --summary --show-keys   # the same, then the keys behind the counts
+python3 tools/lang_coverage.py --summary   # the keys each language still misses, and its English leftovers
 ```

 - Harnesses and the game need the vanilla data in `.local/` (`minecraft/`, `horizon-client/26.3`, `datagen/`,
@@ -178,8 +149,7 @@ python3 tools/lang_coverage.py --summary --show-keys   # the same, then the keys
 - A harness runs the oracle against the real 26.3 jars and the Rust probe on the same inputs, then compares
  their JSON. Oracle runs are cached by `tools/parity_shim.py`; `--fresh` reruns them.
 - Mirror vanilla's `Math` calls with `horizon_core::jmath`, and vanilla's RNG with `horizon_core::random`:
-  random draws must happen in vanilla's order. Performance work may break that order where no player can rely
-  on it; the pull request says so ([CONTRIBUTING.md](CONTRIBUTING.md#when-it-doesnt-have-to-be-11)).
+  random draws must happen in vanilla's order.

 ## horizon-client: where things live

@@ -242,8 +212,7 @@ player does (#1514). A window's `Game` never ticks a world itself: the old in-fr
 Open `[server-thread]` issues list the gaps left.

 Single player, LAN guests and dedicated servers all run the server code, so a fix there serves all three.
-When you change how the server and its clients talk (packets, tracking, guests, the server thread itself), check
-it there. Other gameplay fixes are covered by their own harness and CI's parity job:
+Test the server thread when you touch player-facing gameplay:

 ```sh
 cargo run --profile fast -p horizon-client -- --resources .local/horizon-client/26.3 --world T               # server thread
@@ -1,8 +1,7 @@
 # Contributing to Horizon

 Thanks for helping. Horizon is Minecraft: Java Edition 26.3 rewritten in Rust, and the one rule that shapes
-everything is that **it plays like vanilla**: first exactly like it, then better where players gain from it
-([vanilla first, then better](#vanilla-first-then-better)). This page is the short version of how we work; questions are
+everything is that **it plays exactly like vanilla**. This page is the short version of how we work; questions are
 welcome on [Discord](https://discord.gg/playhorizon).

 This repository holds the game and the launcher, plus the tools, tests and docs that build, check and release them.
@@ -14,17 +13,9 @@ else (videos, Discord and other community material) lives elsewhere.
 suggest something. A pull request for a roadmap item carries its `roadmap:<id>` label; ideas go to the suggestion
 queue (the hub, or `/suggest` on Discord) rather than to issues, which are for bugs.

-**Mod-related pull requests go to [arismoko/horizon](https://github.com/arismoko/horizon)**, the fork that carries the
-mod API and reviews and merges that work. That covers the mod API, native hooks and events for mods, native mods,
-content mods (`.hmod`), mixins, wasm mods, `cargo horizon-mod`, `horizon-mods`, mod builds and the registry, and
-their docs ([mods](docs/mods.md), [native mods](docs/native-mods.md)). Open the pull request there from your usual
-branch. Mod-related pull requests opened here are closed with a pointer to it. Engine extension points that Horizon's
-own crates register (the [layer split](docs/layers.md)), resource and shader pack formats, and gameplay fixes stay
-here.
-
 ## Build it

- **Prerequisites:** Rust (stable), Python 3.11+, JDK 25, git 2.38 or newer, and on Linux the ALSA and udev headers
+- **Prerequisites:** Rust (stable), Python 3.10+, JDK 25, and on Linux the ALSA and udev headers
  (`libasound2-dev libudev-dev`).
 - **Resources:** Horizon never downloads the game; it prepares its resources from your own copy of Minecraft 26.3, as
  described in [Build from source](README.md#build-from-source).
@@ -37,10 +28,7 @@ here.

 - **Launcher:** its own Cargo workspace in `launcher/` (`cd launcher && cargo run`; on NixOS, `nix-shell` first).

-## Vanilla first, then better
-
-Horizon gets there in two stages. First it plays exactly like vanilla; that is what parity work is for. Then it
-improves on vanilla where players gain from it, mostly speed: FPS, TPS, loading, memory.
+## Vanilla first

 Wherever vanilla has a feature, vanilla is the specification, down to the order of random calls. "Parity" here means
 Horizon gives the same results as the pinned 26.3 client and server for the same inputs, checked by a **harness**: a
@@ -53,10 +41,8 @@ and compares their outputs.
 - **One version: 26.3.** Parity work targets 26.3 until its parity is good, redstone first. Don't open pull requests
  that move Horizon to a newer Minecraft version for now; to join servers on a newer version, put a Via proxy
  (ViaVersion, ViaProxy) in front of them.
- **Ports of vanilla behaviour come with a harness**, new or extended, so the next change can't silently break
-  them. [The parity workflow](docs/parity-workflow.md) shows how harnesses run; copy a nearby one. Where vanilla
-  has nothing to compare (Horizon's own features, performance work, refactors), no harness is needed: one Rust
-  test of the changed behaviour, or the numbers before and after.
+- **Gameplay changes come with a harness**, new or extended, so the next change can't silently break them.
+  [The parity workflow](docs/parity-workflow.md) shows how harnesses run; copy a nearby one.
 - **Horizon's own features** (the launcher, the new menus) follow [the design system](docs/design-system.md) and are
  off by default wherever they would change the vanilla look.
 - **Three layers: engine, platform, Horizon.**
@@ -73,26 +59,40 @@ and compares their outputs.
  The pre-push hook checks the full history reachable from the branches and tags being pushed. Run
  `python3 tools/check_public_tree.py --history` to audit the history of all local refs.

-### When it doesn't have to be 1:1
+## Only original code, or code whose license allows it

-Parity is about what players and the vanilla game see, not about copying vanilla's internals. Performance work (a
-multithreaded server tick, rendering, chunk loading, memory) doesn't have to keep vanilla's internal order or its
-exact random calls. It has to work together with normal Minecraft:
+Horizon is MIT. Its code is written from Minecraft 26.3 itself and from public documentation. Since 30 October 2026
+another project's source may also be read and used, **only when that project's license allows it**:

- **Vanilla clients and servers still work with it.** A vanilla 26.3 client plays on a Horizon server, Horizon joins
-  vanilla servers, and saves and worlds open in both, as before.
- **The game still plays the same.** Farms, redstone, mobs and drops work the way players know from vanilla. A
-  difference may only show where no player can rely on it, such as which of two mobs ticks first or exactly which
-  random number a mob gets.
- **Vanilla's slow paths aren't copied.** When vanilla spends a lot of FPS or TPS on something that can reach the
-  same result faster, Horizon does it faster. Copying a performance problem isn't parity.
- **Say what changes.** The pull request names the vanilla behaviour it no longer reproduces exactly, why players
-  won't notice it or why it's worth it, and how it was checked: numbers before and after, and the harnesses that
-  still pass. A change players could notice, such as a different tick order on a busy server, goes behind a setting.
+- **Allowed:** MIT, MIT-0, BSD-2-Clause, BSD-3-Clause, 0BSD, ISC, zlib, Apache-2.0, Unlicense, and the CC0-1.0
+  public-domain dedication. That code may be read, copied or adapted.
+- **Off limits, even to read:** GPL, LGPL (Iris), AGPL, MPL, EPL, Polyform (Sodium), the Creative Commons licenses
+  (CC BY, CC BY-SA, CC BY-NC and the others; CC0 is a public-domain dedication, not one of them), custom or
+  "source available" licenses, all rights reserved (OptiFine), and any project with no license or an unclear one.
+  Don't read, copy, translate or paraphrase their source, and don't send code an AI tool wrote from it. Being able
+  to download a mod or a pack does not give you the right to read its files.
+- **Java's own library is GPL too.** OpenJDK's source (`java.lang.Math`, `StrictMath`, `FdLibm`, `HashMap`, the
+  sorts, `Double.toString`, HotSpot's intrinsics...) is GPL-2.0, so it is off limits like the rest. Reproduce Java's
+  behaviour from its API documentation (the Javadoc) and from what a JVM returns, or from a permissive original such
+  as Sun's fdlibm C sources (see [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md)); see #6741.
+- **Check the license yourself.** Read the LICENSE file at the commit you use and the header of each file you take:
+  some repositories mix licenses, and a file under another license is off limits. A license that changed: the one at
+  your commit counts. In doubt, don't: ask in #contributors first.
+- **Say it in the pull request:** the project, a link to the commit, its license, and what you read or copied. A
+  pull request that used another project's source without saying so is closed.
+- **Copied or adapted code** keeps its copyright line and license notice at the top of the file, and gets an entry
+  in [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md). Apache-2.0 code also keeps its NOTICE text and says what
+  was changed.
+
+User documentation and file formats are fine to read, and packs and mods are fine to run and observe, whatever their
+license. Shader packs are a clean-room rewrite of the pack format, produced from a written description of it (see
+#1561): the [specification and its provenance log](docs/cleanroom/README.md) are public. They carry no foreign
+source, and the rules above still apply to anything you read while working on them. A shader-pack pull request
+names its sources: the sections of that specification, the documentation pages and the packs it ran.

 ## Vendor libraries and Java mods

- **Upscalers and latency tools.** AMD FSR (MIT) may go in the repository.
+- **Upscalers and latency tools.** AMD FSR (MIT) may go in the repository, like any code under an allowed license.
  NVIDIA's DLSS, Reflex and any other library under an NVIDIA license may not: they ship only as an optional native mod
  that downloads NVIDIA's files itself, on the player's machine. No NVIDIA binaries, headers or SDK files in the
  repository.
@@ -109,10 +109,9 @@ python3 tools/pr_ready.py --base upstream/main   # or origin/main if you work on
 ```

 It looks at what your branch changes and runs what matters: rustfmt, clippy with warnings denied, the tests of the
-crates you touched (and the launcher's), generated files, `Cargo.lock` and the Python tests. Like CI, it runs the
-vanilla harnesses only when your branch changes a harness, an oracle, a probe or the runner; otherwise it lists the
-ones your change can affect, and main's parity run checks them after the merge. `--harnesses` runs them on your
-machine anyway (it needs the vanilla data). It exits non-zero when something fails.
+crates you touched (and the launcher's), generated files, `Cargo.lock`, the Python tests, and the vanilla harnesses
+your change can affect. Without the vanilla data on your machine it lists those harnesses instead; CI runs them.
+`--quick` skips the harnesses. It exits non-zero when something fails.

 For the game workspace, Clippy checks all targets of the touched crates and their transitive workspace dependents,
 including examples. The dependency scope includes optional, platform, build and development dependencies. Tests run
@@ -191,5 +190,3 @@ new pushes, we add it again.

 [Discord](https://discord.gg/playhorizon) for questions and ideas, [issues](https://github.com/horizon-rust/horizon/issues)
 for bugs. To take something on, `/claim` its issue ([above](#claim-before-you-start)).
-
-How Horizon is run, and how people join the Team or lead a group: [GOVERNANCE.md](GOVERNANCE.md).
@@ -706,25 +706,6 @@ dependencies = [
 "cfg-if",
 ]

-[[package]]
-name = "crossbeam-deque"
-version = "0.8.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "622f3fc73690be383c7214310406f28a90e6edeadc3cea882f9d71e495b9711a"
-dependencies = [
- "crossbeam-epoch",
- "crossbeam-utils",
-]
-
-[[package]]
-name = "crossbeam-epoch"
-version = "0.9.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc74980687109a3b14c72fd458107bf0baa1da1a1a805e178d15501ba9b86d9d"
-dependencies = [
- "crossbeam-utils",
-]
-
 [[package]]
 name = "crossbeam-queue"
 version = "0.3.14"
@@ -945,12 +926,6 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"

-[[package]]
-name = "either"
-version = "1.19.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e9c71c2167ca323c882b99918929403426e2373ea17242ff5653e0d5e1058be"
-
 [[package]]
 name = "embedded-io"
 version = "0.4.0"
@@ -1443,7 +1418,6 @@ dependencies = [
 name = "horizon-chat-filter"
 version = "0.1.0"
 dependencies = [
- "horizon-server-files",
 "serde",
 "serde_json",
 "toml",
@@ -1476,7 +1450,6 @@ dependencies = [
 "horizon-dualsense",
 "horizon-friends",
 "horizon-hdr",
- "horizon-hooks",
 "horizon-items",
 "horizon-mod-api-gen",
 "horizon-mods",
@@ -1486,7 +1459,6 @@ dependencies = [
 "horizon-server-files",
 "horizon-shader-api",
 "horizon-shaders",
- "horizon-system",
 "horizon-telemetry",
 "horizon-theme",
 "horizon-threads",
@@ -1528,6 +1500,7 @@ version = "0.1.0"
 dependencies = [
 "arboard",
 "horizon-client-core",
+ "horizon-dualsense",
 "horizon-theme",
 "png",
 "winit",
@@ -1549,13 +1522,16 @@ dependencies = [
 "horizon-anticheat",
 "horizon-assets",
 "horizon-bench",
+ "horizon-chat-filter",
 "horizon-client-core",
 "horizon-client-input",
 "horizon-client-render",
 "horizon-command",
 "horizon-core",
+ "horizon-cosmetics",
+ "horizon-dualsense",
+ "horizon-friends",
 "horizon-hdr",
- "horizon-hooks",
 "horizon-items",
 "horizon-mcp",
 "horizon-mods",
@@ -1579,7 +1555,6 @@ dependencies = [
 "open",
 "png",
 "pollster",
- "rayon",
 "rustix 1.1.5",
 "serde",
 "serde_json",
@@ -1610,13 +1585,15 @@ dependencies = [
 "horizon-client-input",
 "horizon-command",
 "horizon-core",
+ "horizon-cosmetics",
 "horizon-hdr",
- "horizon-hooks",
 "horizon-items",
+ "horizon-mod-api-gen",
 "horizon-narrator",
 "horizon-optifine",
 "horizon-polytone",
 "horizon-protocol",
+ "horizon-render-pipeline",
 "horizon-shader-api",
 "horizon-shaders",
 "horizon-system",
@@ -1675,15 +1652,6 @@ dependencies = [
 "ureq",
 ]

-[[package]]
-name = "horizon-discord"
-version = "0.1.0"
-dependencies = [
- "horizon-platform",
- "log",
- "serde_json",
-]
-
 [[package]]
 name = "horizon-dualsense"
 version = "0.1.0"
@@ -1701,7 +1669,6 @@ dependencies = [
 "getrandom 0.3.4",
 "hkdf",
 "horizon-addresses",
- "horizon-platform",
 "if-addrs",
 "serde",
 "serde_json",
@@ -1710,15 +1677,6 @@ dependencies = [
 "spake2",
 ]

-[[package]]
-name = "horizon-game"
-version = "0.1.0"
-dependencies = [
- "horizon-client",
- "horizon-mods",
- "horizon-threads",
-]
-
 [[package]]
 name = "horizon-hdr"
 version = "0.1.0"
@@ -1730,19 +1688,6 @@ dependencies = [
 "wgpu",
 ]

-[[package]]
-name = "horizon-heartbeat"
-version = "0.1.0"
-dependencies = [
- "horizon-platform",
- "horizon-telemetry",
- "log",
-]
-
-[[package]]
-name = "horizon-hooks"
-version = "0.1.0"
-
 [[package]]
 name = "horizon-items"
 version = "0.1.0"
@@ -1823,35 +1768,12 @@ dependencies = [
 "windows 0.62.2",
 ]

-[[package]]
-name = "horizon-official"
-version = "0.1.0"
-dependencies = [
- "horizon-discord",
- "horizon-friends",
- "horizon-game",
- "horizon-heartbeat",
- "horizon-official-servers",
- "horizon-platform",
- "log",
- "winresource",
-]
-
-[[package]]
-name = "horizon-official-servers"
-version = "0.1.0"
-dependencies = [
- "horizon-addresses",
- "horizon-platform",
- "log",
-]
-
 [[package]]
 name = "horizon-optifine"
 version = "0.1.0"
 dependencies = [
+ "horizon-bench",
 "horizon-core",
- "horizon-system",
 "log",
 "regex",
 ]
@@ -1860,13 +1782,7 @@ dependencies = [
 name = "horizon-platform"
 version = "0.1.0"
 dependencies = [
- "horizon-core",
- "horizon-hooks",
- "horizon-prepare",
- "horizon-protocol",
- "horizon-server-files",
 "horizon-system",
- "horizon-world",
 ]

 [[package]]
@@ -1937,6 +1853,14 @@ dependencies = [
 "ring",
 ]

+[[package]]
+name = "horizon-render-pipeline"
+version = "0.1.0"
+dependencies = [
+ "bytemuck",
+ "naga",
+]
+
 [[package]]
 name = "horizon-server"
 version = "0.1.0"
@@ -1948,9 +1872,11 @@ dependencies = [
 "horizon-anticheat",
 "horizon-bench",
 "horizon-chat-filter",
+ "horizon-core",
 "horizon-mcp",
- "horizon-platform",
 "horizon-release-sign",
+ "horizon-server-files",
+ "horizon-world",
 "libc",
 "p12-keystore",
 "png",
@@ -1972,7 +1898,6 @@ name = "horizon-server-files"
 version = "0.1.0"
 dependencies = [
 "base64 0.22.1",
- "getrandom 0.3.4",
 "horizon-core",
 "horizon-protocol",
 "horizon-world",
@@ -1984,7 +1909,7 @@ dependencies = [
 name = "horizon-shader-api"
 version = "0.1.0"
 dependencies = [
- "bytemuck",
+ "horizon-render-pipeline",
 "naga",
 "png",
 "serde",
@@ -2000,6 +1925,7 @@ version = "0.1.0"
 dependencies = [
 "half",
 "horizon-core",
+ "horizon-render-pipeline",
 "naga",
 "png",
 "zip",
@@ -3690,26 +3616,6 @@ dependencies = [
 "objc2-quartz-core 0.3.2",
 ]

-[[package]]
-name = "rayon"
-version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb39b166781f92d482534ef4b4b1b2568f42613b53e5b6c160e24cfbfa30926d"
-dependencies = [
- "either",
- "rayon-core",
-]
-
-[[package]]
-name = "rayon-core"
-version = "1.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22e18b0f0062d30d4230b2e85ff77fdfe4326feb054b9783a3460d8435c8ab91"
-dependencies = [
- "crossbeam-deque",
- "crossbeam-utils",
-]
-
 [[package]]
 name = "rc2"
 version = "0.8.1"
@@ -30,12 +30,6 @@ members = [
    "crates/horizon-telemetry",
    "crates/horizon-system",
    "crates/horizon-platform",
-    "crates/horizon-hooks",
-    "crates/horizon-game",
-    "crates/horizon-official",
-    "crates/horizon-heartbeat",
-    "crates/horizon-discord",
-    "crates/horizon-official-servers",
    "crates/horizon-bench",
    "crates/horizon-friends",
    "crates/horizon-relay",
@@ -45,6 +39,7 @@ members = [
    "crates/cargo-horizon-mod",
    "crates/horizon-port-pack",
    "crates/horizon-shaders",
+    "crates/horizon-render-pipeline",
    "crates/horizon-optifine",
    "crates/horizon-polytone",
    "crates/horizon-shader-api",
@@ -1,583 +0,0 @@
-# Horizon governance
-
-> Adopted 2026-11-09 by the founder as his last decision as head of the project. It takes effect when he
-> announces that he is stepping down. From then on only the council changes it, by a 2/3 poll (section 15).
->
-> Amended 2026-11-10 by the founder (three kinds of action, elections by tier, who may do what, and council poll P41:
-> the mods decide moderation matters). The council can overturn this amendment by poll.
-
-Horizon has no boss. A **council of equals** decides by polls. **Theme groups** do the work in their areas, each
-with a **lead**. The **Horizon Team** reviews and merges code. **Moderators** keep the Discord server and the
-official server safe. Every role of trust is earned with work the project can measure, and it ends when that work
-stops.
-
-## Contents
-
-1. [Principles](#1-principles)
-2. [The levels at a glance](#2-the-levels-at-a-glance)
-3. [Each level in detail](#3-each-level-in-detail)
-4. [The council and its polls](#4-the-council-and-its-polls)
-5. [The selection filter](#5-the-selection-filter)
-6. [Theme groups](#6-theme-groups)
-7. [Moderation and appeals](#7-moderation-and-appeals)
-8. [Conflicts and hard cases](#8-conflicts-and-hard-cases)
-9. [The age rule (18+)](#9-the-age-rule-18)
-10. [The agents](#10-the-agents)
-11. [Accounts and the handover path](#11-accounts-and-the-handover-path)
-12. [Money](#12-money)
-13. [Transparency](#13-transparency)
-14. [Rules that are never voted on](#14-rules-that-are-never-voted-on)
-15. [Changing this document](#15-changing-this-document)
-
-## 1. Principles
-
- **Equals.** Every council member has one vote. Nobody, the founder included, stands above the others.
- **The founder.** Ludovic keeps the title of **Founder**: his role stays at the top of the member list and he is
-  credited as Horizon's founder everywhere. The title is symbolic. It carries no extra vote or power: on the council
-  he counts exactly like every other member.
- **Evidence, not popularity.** You get a role by doing the work first. Kira measures that work: merged pull
-  requests, reviews, triage, support answers and days active. A vote then confirms it.
- **Small, clear powers.** Each role can do a short, written list of things. Anything else goes to the council.
- **Roles are on loan.** Every role has a 30-day probation and an inactivity rule. Stepping down for inactivity is
-  not a sanction, and you can come back.
- **Public by default.** Polls, results and rules are public. Only matters about a person stay private, and even then
-  the result is published.
- **18+ for roles of trust** (section 9).
- **Mojang's and Microsoft's rules come first.** They are never put to a vote (section 14).
-
-## 2. The levels at a glance
-
-From the most open level to the most trusted. A person can hold several levels at once: a group lead can also be on
-the Horizon Team, for example.
-
-| Level | What it can do | How you get in | How you leave | 18+ |
-| --- | --- | --- | --- | --- |
-| **Member** | Play, chat, report bugs, suggest ideas, open issues and pull requests, pick group roles | Join the Discord server or the GitHub repo | Leave, or get banned | No |
-| **Contributor** (⛏️ Iron, 🥇 Gold, 💎 Diamond, 🟪 Netherite ranks) | Write in #contributors; `/claim` issues; vote in their group's elections (if active in that group) | One merged pull request in a public horizon-rust repo, linked with `/link-github` and `/verify-github`. Ranks come from merged pull requests: 10, 40, 100 and 200 | Contributor status and ranks stay | No |
-| **Group member** | Read and write in the group's channel; get the group's pings; vote in the group's elections and votes when active | Pick the group's role in Channels & Roles, or with `/groups` | Remove the role | No |
-| **🤝 Support** | Answer and close posts in #horizon-support | Given by any moderator (a free action, section 2.1) | Resign, 30 days inactive, or removed by a moderator, the Chief of Mods or the council | No |
-| **🛡️ Moderator** | Time out, delete messages, manage threads, quarantine. No bans | Elected by the mods (section 5.3); council veto within 24 h | Resign, 30 days inactive, suspended by the Chief of Mods, recalled by the mods, removed by a council poll (simple majority) | **Yes** |
-| **🛡️ Chief of Mods** | A moderator's powers, plus bans; leads the mods; suspends a mod at once pending the council | Elected by the mods, from the mods with at least 30 days (section 5.3); council veto within 24 h | Resign, 30 days inactive, recalled by the mods, council poll (simple majority) | **Yes** |
-| **🧭 Group lead** | Decides inside the group's topic (section 6); manages the group's channel; triage on the group's GitHub issues | Elected by the group's active members and the Team (section 5.3); council veto within 24 h; 30 days probation | Resign, 30 days inactive (automatic), recalled by the same electorate, council poll (simple majority); confirmed again every 6 months | **Yes** |
-| **🌌 Horizon Team** | Review and merge pull requests (GitHub `horizon-team`, write access); `/nightly` and triage commands (trusted reviewers); #horizon-team | Elected by the Team, 2/3 (section 5.3); council veto within 24 h; 30 days probation | Resign, 60 days without a merge or review (automatic), recalled by the Team (2/3), council poll (2/3, without the person) | **Yes** |
-| **🏛️ Council** | Decides everything else by poll (section 4); bans; emergency actions by any 2 members | Nominated by a council member, the filter, a 24 h public discussion, then a council poll (2/3); 30 days probation | Resign, inactivity (section 5.5), council poll (2/3, without the person) | **Yes** |
-
-**The account holder** isn't a level. The founder (Ludovic) still holds the project's accounts (GitHub organisation
-owner, Discord server owner, the Microsoft app approved by Mojang, the domains, Railway, money). He carries out the
-council's decisions on them and hands them over step by step (section 11). As a council member he has one vote,
-like everyone else.
-
-### 2.1 Three kinds of action
-
-Most things need no vote at all. A vote is for power over other people, and for decisions that bind a whole body.
-
-| Kind | What | How |
-| --- | --- | --- |
-| **Free** | Everyday actions inside your own role (the list below, and anything of the same weight) | Just do it. Kira logs the ones she sees in #staff-log. The tier above can reverse it; if people disagree, the tier above votes. A pattern of abuse is a recall |
-| **Body vote** | Giving or taking a role that carries power (an election), or a decision that belongs to one body: the mods, the Team, a group | `/elect` or `/vote body:` in Kira (section 5.3). Any council member can call a veto within 24 hours |
-| **Council poll** | Rules, money, accounts and ownership, the council's own members, vetoes, anything that spans several bodies | `/poll` (section 4) |
-
-Free actions, for example:
-
- a lead gives or removes their group's helper role (🧩 Horizon Modding Team), through Kira;
- a moderator gives or removes 🤝 Support, through Kira;
- a moderator times out, deletes, quarantines, or changes a channel's slowmode or topic; the Chief of Mods bans and
-  unbans;
- the Team merges and labels;
- a server operator restarts the official server, or prunes backups and chunks by the written rule;
- a lead pins, renames or creates threads in their group's channels;
- Kira's automatic actions.
-
-**The 24-hour rule.** Every vote lasts 24 hours at most, and closes earlier once its result can't change. Only council
-polls on this document, the licence, money and the GitHub organisation's ownership last 48 hours. A veto is called
-within 24 hours of a result.
-
-### 2.2 Who may do what
-
-What each post decides, and what it holds on Discord, on the official server and on GitHub. Anything not listed is a
-council matter.
-
-| Post | Decides | Discord | Official server | GitHub |
-| --- | --- | --- | --- | --- |
-| **Member** | — | Chat, threads, picks group roles | Play | Issues, pull requests, `/claim` |
-| **Group helper** (🧩 Horizon Modding Team) | — | Writes in the group's team channel | — | — |
-| **🤝 Support** | Closes support posts | Manages threads in #horizon-support | — | — |
-| **🛡️ Moderator** | Moderation matters, by the mods' vote (section 7) | Time out, delete messages, manage threads and nicknames, audit log, voice mute and move; quarantine through Kira; the staff channels | In-game op if also elected operator | — |
-| **🛡️ Chief of Mods** | A moderator's, plus bans and unbans; suspends a mod at once; breaks ties in the mods' votes | Plus Ban | As a moderator | — |
-| **Server operator** | In-game moderation by the server rules | — | Op (the server's ops list); no panel, no `server.toml` | — |
-| **🧭 Server & SMP lead** | The server's settings, by the written rules (backup first, warning in game) | As every lead | A panel sub-user once a council accounts poll gives one | As every lead |
-| **🧭 Group lead** | The group's free actions; gives and removes its helper role | In the group's channels: delete messages, manage and pin threads, ping the group; the helper role through Kira | — | Triage on the group's labels through Kira (no repository role) |
-| **🌌 Horizon Team** | Merges; elects Team members | #horizon-team and the staff channels. The role still carries timeout and delete; whether it keeps them is a mod matter | — | `horizon-team`: write on horizon, horizon-mods, horizon-mixins, horizon-native-mod-template and horizon-server; also kira and horizon-site if P37 passes |
-| **🔧 Server Manager** | — | Manage Channels and Manage Roles (the server's layout); given by council poll | — | — |
-| **🏛️ Council** | Council polls, vetoes, emergencies (any 2) | A moderator's permissions plus Ban, mention @everyone and pin; #council | Panel sub-users for two members if P38 passes | The `council` team: code-owner reviews and the release tools' owner powers if P35 passes, security managers if P36 passes; a second organisation owner if P28 passes |
-| **Account holder** (the founder) | Carries out decisions on his accounts (section 11) | Server owner | The panel's owner account | Organisation owner |
-
-Kira applies a passed election everywhere she can: Discord roles herself, GitHub team membership when the council has
-given her a token for it. Whatever she can't do (a panel sub-user, the ops list, a GitHub team without a token) she
-posts as a list of clicks for a named person.
-
-## 3. Each level in detail
-
-### Member
-
-Anyone in the Discord server or on GitHub. Members follow the server rules and Horizon's
-[contributing guide](CONTRIBUTING.md). They can propose anything: an idea in #horizon-ideas, a bug in #horizon-bugs,
-an issue or a pull request on GitHub, or a request for a council poll (any council member can pick it up).
-
-### Contributor
-
- **Discord:** the 🛠️ Contributor role writes in #contributors and in the threads of #polls-and-decisions. A rank
-  role (⛏️ Iron at 10 merged pull requests, 🥇 Gold at 40, 💎 Diamond at 100, 🟪 Netherite at 200, counted over every
-  public horizon-rust repo) shows how much has been merged. Ranks only go up.
- **GitHub:** no repository role. Anyone can `/claim` and `/unclaim` their own issues.
- **Alone:** their own work.
-
-### Group member
-
-Each theme group (section 6) has a role that anyone can pick and drop. It opens the group's channel and receives the
-group's pings. Picking a role grants no power. A group member counts as **active in the group** when Kira has seen at
-least one counted action in the group's area (section 5.1) in the last 60 days. Active group members vote in the
-group's elections and decisions (section 5.3).
-
-### 🤝 Support
-
-Unchanged: Support members help players in #horizon-support. They answer every post there and mark posts solved.
-The role carries no permission, so it has no age rule. A moderator gives it, and takes it back, through Kira.
-
-### 🛡️ Moderators and the Chief of Mods
-
- **Discord:** time out members, delete messages, manage threads and nicknames, read the audit log, quarantine
-  through Kira, and see the staff channels. **Moderators don't ban.** Bans are done by council members and the Chief of
-  Mods. Kira's automatic actions (the honeypot, clear scams, illegal images) stay as they are.
- **Official server:** server operators (ops) are moderators in game. They need the 18+ rule and are confirmed the
-  same way (section 6, Server and SMP).
- **Alone:** a timeout, a deleted message, a quarantine, with a reason in the mod case.
- **The Chief of Mods** is the first contact for moderation questions. They organise the mods, can ban, and can take a
-  moderator's role away at once when there is a problem. The council confirms or reverses that within 72 hours.
-
-### 🧭 Group leads
-
-Section 6 says what a lead decides alone and what goes to the council.
-
- **Discord:** in their group's channel only, delete messages, manage and pin threads, and ping the group role. The
-  🧭 lead role carries no server-wide permission.
- **GitHub:** triage on the issues and pull requests that carry their group's label (`/label`, `/unlabel`, `/close`,
-  `/reopen`, `/unclaim`), from a list of group leads that grants no repository role. Leads merge only if they are on
-  the Horizon Team too.
-
-### 🌌 Horizon Team
-
-The Horizon Team **merges pull requests**. Its rules are in [the release flow](docs/release-flow.md): read the whole
-diff, never merge your own pull request, and use `needs-proof` for anything risky.
-
- **GitHub:** member of the `horizon-team` team (write access to the Horizon repos), on the trusted reviewers list
-  (`/nightly` and triage commands).
- **Discord:** the 🌌 Horizon Team role, #horizon-team, and writing in #contributors and the read-only channels.
-  Moderation permissions belong to the moderators and the council: a Team member moderates only if they also hold
-  one of those roles.
- **During the 30-day probation:** they merge only ordinary pull requests. They don't merge `needs-proof` pull
-  requests, don't approve files that CODEOWNERS guards, and don't use `/nightly`.
-
-### 🏛️ Council
-
- **Discord:** the 🏛️ Council role: the moderators' permissions plus ban and mention @everyone; #council (private);
-  starting polls in #polls-and-decisions.
- **GitHub:** the `council` team. Over time it takes over the founder's CODEOWNERS review and his owner powers in the
-  release tools (section 11).
- **Alone (any one member):** start a poll; pick up a member's request for a poll; do anything their other roles
-  allow.
- **Any two members together:** an emergency action (section 4.6).
- **Everything else** is decided by poll.
-
-## 4. The council and its polls
-
-### 4.1 Founding council
-
-kacpherek, levzzz5154, rdbtCVS, Online5277, dezer-x and Ludovic: six members, one vote each. The founding members
-don't go through the filter or a probation. They do make the 18+ declaration (section 9). The council has at most
-**9** members. It adds a seat only when a 2/3 poll says it needs one.
-
-### 4.2 How a poll works
-
-| Rule | Value |
-| --- | --- |
-| Who starts one | Any council member, with `/poll` (Kira). Anyone else asks a council member to start it |
-| Where | #polls-and-decisions, in public. Polls about a person (removal, appeals, the age rule) run in #council, and only their result is public |
-| How long | 24 hours; 48 hours for this document, the licence, money and the GitHub organisation's ownership. It closes early only if every council member has voted |
-| Ballot | Yes, No or Abstain. You can change it until the poll closes |
-| Quorum | At least half of the council votes (Abstain counts). With 6 members, 3 votes |
-| Simple majority | More Yes than No |
-| Two-thirds | Yes is at least 2/3 of the Yes and No votes, **and at least 3 Yes votes** |
-| Tie | Nothing changes |
-| No quorum | Nothing changes. Kira reminds the members who haven't voted 12 hours and 2 hours before the end |
-| About yourself | You don't vote, and you don't count in the council's size for that poll |
-| Asking again | A poll that failed can't be asked again for 7 days, unless two members agree that new facts justify it |
-
-### 4.3 Which threshold applies
-
-| Simple majority | Two-thirds |
-| --- | --- |
-| Day-to-day project decisions: direction, priorities, settling disputes between groups, a public statement | Adding council members |
-| Vetoing a body's vote or election (section 5.3) | Removing a council member or a Team member (without the person concerned) |
-| Removing a group lead, a moderator, the Chief of Mods or Support (their bodies can also recall them) | Rules: this document, the server rules, the contributing policy, the licence |
-| Ending a probation early | Money (section 12) |
-| Confirming an emergency action | Account handover steps (section 11) |
-| Deciding for a body that has fewer than 3 voters | Waiving part of the selection filter (section 5.4) |
-| Bringing back someone who stepped down for inactivity, within 6 months | Changing the council's size |
-
-**When in doubt, two-thirds.** Any council member can say a poll needs 2/3, and Kira then counts it at 2/3.
-
-### 4.4 Discussion
-
-Polls that add someone to the council start with a **24-hour public discussion**. Other polls, and elections, are
-discussed in their own thread while they run. A member who wants more time votes No and says
-why. A failed poll can come back after 7 days.
-
-### 4.5 Conflicts of interest
-
-A member doesn't vote on a poll about themselves: their own role, their own removal, an appeal of their own
-moderation action, or money paid to them. They say so in the poll's thread and Kira leaves them out of the count.
-
-### 4.6 Emergencies
-
-For **security** (a leaked secret, a malicious pull request or mod, a hijacked account), **Mojang or Microsoft** (a
-request from them, a risk to the approved sign-in) or **legal** matters (a takedown, the law), **any two council
-members act at once**. They may:
-
- pause releases and the Nightly;
- take a mod down from the registry;
- remove someone's roles or access for now;
- lock or hide channels and content;
- ask the account holder to rotate a secret or a key.
-
-They record it with `/emergency` in Kira, and both of them confirm it there. Kira opens a council poll at once
-(simple majority) to confirm it. If the poll doesn't pass, the action is undone where it can be. An emergency never
-adds members, changes rules or spends money.
-
-### 4.7 Removing a council member
-
-A 2/3 poll of the other members, in #council. The person concerned doesn't vote and doesn't count in the quorum.
-Only the result is published, never the reasons. Other ways to leave: resigning, inactivity (section 5.5), or a
-false age declaration (section 9).
-
-### 4.8 When the council drops below a quorum
-
- **Fewer than 5 members:** Kira opens nominations for the council at once. The council fills seats within 30 days.
- **Fewer than 3 members, or fewer than 3 who voted in the last 30 days:** an **interim council** forms. It counts the
-  remaining council members, the Horizon Team and the group leads past probation. Its only task is adding council
-  members, by its own 2/3 poll with a quorum of half. Any two of its members can take emergency actions. All other
-  decisions wait. The Team keeps merging and the leads keep leading.
- **Nobody left:** the Team and the group leads form the interim council in the same way.
-
-## 5. The selection filter
-
-Nobody becomes a lead, a Team member or a council member just because they are well liked or talk a lot. Kira
-measures the work, and only people above a floor can be nominated. Their body then elects them (section 5.3).
-
-### 5.1 What Kira measures
-
-| Signal | What counts | Source |
-| --- | --- | --- |
-| **Merged pull requests** | Pull requests merged in a public horizon-rust repo. For Modding, also in the mod API's fork (arismoko/horizon). Counted overall, and per group by label or by files touched | GitHub search, as the ranks are counted today |
-| **Reviews** | Others' pull requests you reviewed: approved, asked for changes, or left a review with comments. One per pull request | GitHub search `reviewed-by:` and Kira's GitHub webhook |
-| **Triage** | Triage commands run (`/label`, `/close`, duplicates), issues labelled or closed, bug posts routed on Discord | The triage workflow's comments and Kira's webhook |
-| **Support answers** | #horizon-support posts you answered that ended solved | Kira's support feature |
-| **Active days** | Distinct days with any of the above, or with messages in #contributors or a group's channel. Chat elsewhere doesn't count | Kira |
-| **Tenure** | Days since your first counted contribution (since you joined the server, for moderators) | GitHub, Discord |
-| **Clean record** | No timeout, quarantine or ban in the last 90 days | Kira's mod cases |
-| **Verified GitHub** | `/verify-github` done | Kira |
-| **18+ declaration** | Made (section 9) | Kira |
-
-Kira turns these into an **evidence card**: the person's numbers, overall and in the group's area, for the last 60
-days and in total. Anyone can see their own card with `/evidence`. A nomination shows the card publicly.
-
-### 5.2 The floors
-
-A nomination is refused below these floors.
-
-| Role | Floor |
-| --- | --- |
-| **Group lead** | Verified GitHub; tenure of 30 days or more; **in the group's area: 8 or more merged pull requests, or 20 or more reviews** (Translations: 5 or more merged translation pull requests; Server and SMP: 8 pull requests, or 30 days as an official server operator with activity); 15 or more active days in the last 60; clean record; 18+ |
-| **Moderator** | In the server for 30 days or more; Kira level 10 or more; 15 or more active days in the last 60; clean record; 18+ |
-| **Chief of Mods** | Moderator for 30 days or more, past probation; 18+ |
-| **Horizon Team** | 🥇 Gold rank (40 merged pull requests); 20 or more reviews of others' pull requests; tenure of 30 days or more; 20 or more active days in the last 60; clean record; verified GitHub; 18+ |
-| **Council** | Horizon Team member, group lead or Chief of Mods for 60 days or more, past probation; 20 or more active days in the last 60; clean record; 18+ |
-
-The numbers are checked again once a year (section 15). They should stay reachable for people who really work on
-Horizon and out of reach for people who don't.
-
-### 5.3 Elections
-
-The body that works with a person elects them. Kira runs it: `/elect post: member: [group:]`, and `action: remove`
-for a recall.
-
-| Post | Who votes | Passes with | Who can start it |
-| --- | --- | --- | --- |
-| **🛡️ Moderator** | The mods (🛡️ Mod and 🛡️ Chief of Mods) | Simple majority; the Chief of Mods breaks a tie | Any mod, a council member |
-| **🛡️ Chief of Mods** | The mods; candidates are mods for 30 days or more | Simple majority | Any mod, a council member |
-| **Server operator** | The mods and the 🧭 Server lead | Simple majority | The Server lead, the Chief of Mods, a council member |
-| **🧭 Group lead** (a co-lead once the group has 8 active members) | The group's active members, and the Team | Simple majority | The current lead, a Team member, a council member |
-| **🌌 Horizon Team** | The Team | Two thirds, and at least 3 Yes | A Team member, a council member |
-| **🏛️ Council** | The council, by poll after a 24-hour discussion (section 4) | Two thirds, and at least 3 Yes | A council member |
-| 🤝 Support, a group's helper role | Nobody: a free action (section 2.1) | — | A moderator; the group's lead |
-
-An **active group member** has held the group's role for 14 days or more (Kira counts from when she first saw it)
-and has at least one merged pull request or review with the group's label in the last 60 days.
-
-1. **Start.** Kira checks the floor (5.2) and the 18+ declaration. If the candidate falls short, the person starting
-   gets a private "not now", and the candidate a private message saying what is missing. Nothing is posted and no
-   reason is ever shown to anyone else. Kira checks what she can measure (verified GitHub, merged pull requests and
-   reviews, overall and by the group's label, rank, days in the server, Kira level, clean record, the declaration);
-   the voters judge the rest.
-2. **Vote, 24 hours,** in the body's channel, discussed in the vote's thread. Yes, No or Abstain, changeable while it
-   runs. Kira shows how many voted, never who. It closes early once the result can't change.
-3. **Result,** applied at once. Kira gives or takes the Discord role and, with a token, the GitHub team; she lists the
-   rest as clicks for a named person. Only the result is published, never the ballots.
-4. **Veto, 24 hours.** Any council member can call it with the button under the result. A council poll (simple
-   majority, without the people involved) decides; if it passes, Kira undoes the result.
-5. **Probation, 30 days,** for leads and Team members. It ends by itself unless someone who can vote starts a recall.
-
-The council can always remove someone by its own poll. **Body votes** work the same way for a body's own decisions:
-`/vote body:mods`, `body:team` or `body:group`, simple majority, 24 hours, the same veto.
-
-#### Hard cases
-
-| Case | What happens |
-| --- | --- |
-| Fewer than 3 can vote | The council decides by poll |
-| Quorum | A third of the electorate, and at least 3 ballots (Abstain counts). Without it, nothing changes |
-| Tie | Fails, and nothing changes. In the mods' votes, the Chief of Mods' ballot breaks it |
-| The candidate | Doesn't vote on themselves, and can decline (the election ends). The person who started it votes normally |
-| Conflicts | Whoever the vote is about, or who gave or received the moderation action in question, doesn't vote |
-| Several candidates for one seat | Nominations within the first 12 hours join one approval ballot. The seat goes to the most approvals if that is at least half of the voters; otherwise a 24-hour run-off between the top two |
-| A seat that is held | Changes only by a recall or by the 6-month confirmation |
-| The council is already voting on it | No election starts for the same person and post |
-| Cooldown | A failed or vetoed election can't be started again for the same person and post for 30 days. At most 3 elections run at once in a body |
-| Vacancy | When a lead or the Chief of Mods leaves, Kira opens the seat's election herself: 24 hours of nominations, then the vote with everyone nominated. Nobody nominated: the seat stays open, and the tier above acts meanwhile. Kira never picks a candidate |
-| Abuse of a free action | The tier above reverses it; a disagreement goes to its vote. A pattern is a recall |
-| Emergency | Section 4.6. The Chief of Mods can still suspend a mod at once |
-| Kira is down | The body may run the same vote as a Discord poll in its channel for 24 hours; Kira records the result when she is back |
-
-#### Reminders, not nominations
-
-Once a month in a group's channel, Kira says how to propose someone, only when the group has no lead or someone in it
-meets a post's floor. When a seat opens, she posts once in the electorate's channel. Once a month in #council, she
-lists privately the people who meet a floor. These are suggestions: only people start elections.
-
-### 5.4 Exceptions
-
-Some valuable people don't show up in the numbers, such as a designer for the website. The council can **waive the
-tenure or the area floors** by a 2/3 poll that says why. The age rule and the clean record are never waived.
-
-### 5.5 Inactivity
-
-Kira checks every day. It warns the person in a DM and in #council, then posts the step-down in
-#polls-and-decisions with neutral wording ("stepped down: inactive"), and removes the Discord role. The account
-holder or an org owner removes GitHub access when the Team role ends.
-
-| Role | What counts as activity | Warning | Steps down |
-| --- | --- | --- | --- |
-| Group lead | A counted action in the group's area, or messages in the group's channel | Day 21 | Day 30 |
-| Horizon Team | A merge or a review | Day 45 | Day 60 |
-| Moderator, Chief of Mods | A moderation action, or messages in the staff channels | Day 21 | Day 30 |
-| Support | An answer in #horizon-support | Day 21 | Day 30 |
-| Council | A vote in a poll. At 30 days with no vote, while at least 2 polls were held | Day 23 | Day 30, or 45 days with no counted activity at all |
-
- **Away.** Anyone can announce an absence with `/away` for up to 45 days, once every 6 months. Away days don't
-  count. A lead names someone from the group to cover for them.
- **Coming back.** Within 6 months: a simple-majority poll, with no new probation. After 6 months: the normal path.
-
-### 5.6 Terms
-
- **Group leads** are confirmed every 6 months by an election in their group. If someone else in the group passes the
-  floor and is nominated within its first 12 hours, both go on the same ballot.
- **Council and Team** have no fixed term. They stay as long as they are active and keep the council's trust. Removal
-  is always possible (section 4.7).
-
-## 6. Theme groups
-
-### 6.1 The groups
-
-| Group | Covers | GitHub | Discord |
-| --- | --- | --- | --- |
-| **Modding** | The mod API, native and content mods, mixins, the mod registry, `cargo horizon-mod` | The mod API lives in Ari's fork **arismoko/horizon**. Its owner runs that repo by their own rules; the council governs only what is Horizon's: horizon-rust/horizon-mods, horizon-mixins, horizon-native-mod-template, the registry. Label `mods` | The 🧩 MODDING category (#modding, #horizon-modding-team); roles 🧩 Modder (picked) and 🧩 Horizon Modding Team (the lead gives it) |
-| **Shaders and rendering** | The renderer, shaders, shader packs, OptiFine and Polytone pack formats | Label `rendering`; `crates/horizon-client-render` (gfx), `*.wgsl`, `horizon-shaders`, `horizon-shader-api`, `horizon-optifine`, `horizon-polytone` | #shaders-rendering |
-| **Performance** | Frame rate, memory, server tick, benchmarks | Label `perf`; `horizon-bench`, the benchmark tools | #performance |
-| **Launcher** | The launcher: installs, updates, instances, its pages | Label `launcher`; `launcher/` | #launcher |
-| **Server and SMP** | Dedicated server, hosting, the anticheat, multiplayer, and the official SMP | Labels `server`, `multiplayer`; `horizon-server*`, `horizon-anticheat`, `lan/`, `dedicated*`; horizon-rust/horizon-server | #server-smp (plus #join-server, #server-chat) |
-| **Translations** | The game's and the launcher's languages | Label `roadmap:languages`; `launcher/lang/`, `crates/horizon-client/assets/horizon/lang/` | #translations and the 🌍 language channels |
-| **Website** | playhorizon.dev | horizon-rust/horizon-site; label `website`. The site's design stays as it is unless the council decides otherwise | #website |
-| **Vanilla accuracy** | Parity with vanilla 26.3: harnesses, oracles, the port ledger | Labels `parity`, `parity-regression`, `full-parity`; `tools/test_*_parity.py`, the Java oracles | #vanilla-accuracy |
-| **UI** | The game's menus, HUD, settings, controller navigation, the design system | Labels `ui`, `accessibility`; `title/`, `settings_shell.rs`, `hud*`, `ui.rs`, `docs/design-system.md`, `horizon-theme`. The launcher's look is shared with Launcher | #ui |
-
-A pull request can belong to two groups. Both leads can comment, and the Team merges as usual. If the leads disagree,
-the council decides.
-
-### 6.2 Leads per group
-
- **One lead per group.** A group with 8 or more active members may also have **one co-lead**, chosen the same way.
- A person leads **at most two groups**. Council members may lead a group, though a lead from outside the council is
-  preferred: it spreads the work.
-
-### 6.3 What a lead decides alone
-
-Inside their group's topic, and within this document, the contributing guide, the vanilla-first rule, the layers and
-the design system:
-
- the group's priorities and the order of its roadmap items;
- which issues are `good first issue`, and triage of the group's issues;
- technical and design direction inside the area, when vanilla behaviour and the default look don't change;
- accepting or declining an idea or a proposal in the area. Any two active group members or one council member can
-  take that decision to the council;
- giving and removing the group's helper role, through Kira (a free action);
- how the group organises itself (threads, meetings, the channel's rules on top of the server's);
- asking the Team for reviews, adding `needs-proof`, and starting elections in the group.
-
-### 6.4 What goes to the council
-
- the rules, money, accounts and secrets;
- who is on the council, the Team or the mods;
- anything that changes vanilla behaviour or turns a Horizon-only feature on by default;
- breaking a public promise: the mod API, server compatibility, save and file formats;
- disputes between groups;
- anything involving Mojang, Microsoft or the law;
- speaking for the whole project outside the group's topic.
-
-### 6.5 A group without a lead
-
-The work goes on. The Team reviews and merges, and Kira still routes the group's issues and questions to its
-channel. Until a lead is chosen, any council member may take a lead's decision for that group and says so in the
-channel. Kira posts once that the seat is open and how to start its election (section 5.3). **No lead is better than a lead who doesn't do the work:**
-nobody is appointed just to fill the seat.
-
-## 7. Moderation and appeals
-
- **The mods decide moderation matters** (council poll P41, imposed by the founder on 2026-11-10): who joins or
-  leaves the mod team, the mods' permissions and the staff channels, bans and unbans, and channel settings for
-  moderation. Everyday actions are free (section 2.1). Anything bigger is a mods' vote (`/vote body:mods`, simple
-  majority, 24 hours), and the Chief of Mods breaks ties. **The council keeps a veto:** within 24 hours of a mods'
-  decision, any council member can call a council poll, and a simple majority overturns it.
- **The server rules** are in #rules. Moderators enforce them, the Chief of Mods leads the mods, and the council can
-  change the rules (2/3).
- **Every action has a mod case**: who acted, what they did, and why. Kira keeps the cases.
- **First appeal:** within 14 days, through #appeal (for a quarantine) or mod mail. A moderator who wasn't involved,
-  or the Chief of Mods, answers within 72 hours.
- **Second appeal:** for bans, timeouts over 24 hours and quarantines, a mods' vote in #mod-chat. Mods who were
-  involved don't vote, and the council's veto applies. The answer is final for 90 days.
- **Not appealable here:** actions that Discord's rules or the law require. Those are reported where the law says.
- **Removing a moderator:** the Chief of Mods can suspend a moderator at once, and the mods decide within 72 hours by
-  a recall vote. The mods recall the Chief of Mods the same way. The council can also remove either by poll.
- **Council members keep the ban permission** for emergencies and when no moderator is around. They log the ban like
-  any other, and the mods can reverse it by vote.
- **Staff are moderated like everyone.** When a council member is involved, the council decides without them.
-
-## 8. Conflicts and hard cases
-
-| Case | What happens |
-| --- | --- |
-| Two groups disagree | The leads talk first. If they still disagree, the council decides (simple majority) |
-| A lead's decision is contested | Any two active group members or one council member can bring it to the council |
-| A Team member merges against the rules | Any council member can revert the merge. The council can remove the member (2/3) |
-| A council member breaks the rules | The council decides without them. Removal takes 2/3 (section 4.7) |
-| Someone holds a role and is under 18 | Section 9 |
-| The council can't reach quorum | Section 4.8 |
-| The founder and the council disagree about one of his own accounts | Until a step of section 11 hands it over, the account stays his. He carries out the council's decisions on project matters, or he says publicly that he won't |
-
-## 9. The age rule (18+)
-
-**Who must be 18 or older:** members of the council and the Horizon Team, trusted reviewers, group leads and
-co-leads, the Chief of Mods and the moderators, official server operators, and anyone with admin rights anywhere in
-the project: Discord (Administrator, Manage Roles, Manage Channels, ban), GitHub (write, admin, organisation),
-server panels, Railway, or Kira's admin side. The same goes for anyone who holds a project secret.
-
-**Who doesn't have to be:** members, contributors (with any rank), group members and 🤝 Support. Contributors under
-18 are welcome and valued. They just can't hold the roles above.
-
-**How it's checked, without collecting ID:**
-
- **A declaration.** Before taking such a role, and once at the start for everyone who holds one, the person presses
-  a button in Kira: "I confirm that I am 18 or older. I understand that a false declaration removes all my roles of
-  trust." Kira keeps only the Discord account, the date and the wording's version. It never stores a birth date, an
-  ID, a photo, or any outside age-checking service's result.
- **No declaration, no role.** At the start, current role holders have 7 days to make it. Until they do, their role is
-  paused.
- **When there's doubt** (the person says they are younger, or there is a credible private report), one council
-  member asks the person privately. If the doubt remains, any council member pauses the role, and the council decides
-  within 72 hours in #council.
- **A false declaration** removes every role of trust at once, and the person can't hold one for 12 months.
- **Privacy.** Age is never discussed in public. A role that ends for this reason ends with the same neutral line as
-  any other step-down.
-
-## 10. The agents
-
-Horizon uses AI agents: the founder's orchestrator, which runs coding agents, and Kira, the Discord bot.
-
- **They obey council decisions only:** a passed poll recorded by Kira, a recorded emergency action of two council
-  members, and the standing rules in this document and the project's docs.
- **The only exception is the founder's own things:** his spending, his machines (they run CI and the vanilla tests),
-  his personal accounts and his time. On those, his word decides. This list should get shorter over time (section 11).
- **Role work isn't a decision.** A lead asking Kira to route issues, or a Team member asking an agent to prove a pull
-  request, is that person using their role. The agents help, within the role's powers.
- **They check the source.** An agent acts on a decision only when it finds it in Kira's decisions log
-  (section 13). A message saying "the council decided", or a screenshot, is not enough.
- **They post as agents.** Everything an agent posts says it comes from an agent, and states decisions as the
-  project's.
-
-## 11. Accounts and the handover path
-
-Today the founder holds every account. The aim is for him to hold fewer, in an order that never leaves the project
-unable to act, and never puts an account that is tied to a person into anyone else's hands.
-
-| Account | Today | Can it be shared? | Plan |
-| --- | --- | --- | --- |
-| **GitHub organisation** (horizon-rust) | Two owners since 2026-11-11: the founder and rdbtCVS (P28); a `council` team holds CODEOWNERS (P35) and is the security managers (P36) | Yes: an organisation can have several owners | **Step 1:** a second owner from the council, chosen by a 2/3 poll in the council's first week, with two-factor authentication on. **Step 2:** a `council` team; CODEOWNERS reviews and the release tools' owner powers (`paused`, `/nightly remove`) move from the founder to that team |
-| **Discord server** | Owned by the founder | Partly: a server has exactly one owner; powers can be given through roles | **Step 1:** the 🏛️ Council role gets moderation and ban permissions; Kira applies the outcomes of passed polls, so nobody needs Manage Roles; two-factor authentication becomes required for moderation. Ownership itself stays with the founder until a legal entity exists |
-| **Kira** (bot application, Railway service) | The founder's Discord developer account and Railway | The bot: yes (a Discord developer team). Railway: adding members may need a paid plan | **Step 1:** a Discord developer team with two council members. Railway members once the council decides on money |
-| **Official server** (hosting panel) | The founder's account | Yes: panel sub-users | **Step 1:** sub-users for the Server and SMP lead and for one council member |
-| **Domains** (playhorizon.dev and the others) | The founder's registrar account | Not without moving it | Auto-renewal on, registered for several years ahead. They move only to a legal entity, if one is created |
-| **The Microsoft app approved by Mojang** (sign-in) | The founder's Azure app registration; Mojang approved it after his application | **No.** The approval was given on his application. Moving the app or adding owners would change who Mojang deals with, and we have found no documented way to transfer an approval | **Never moves** without Mojang's written agreement. The only change considered: a legal entity, if one is created, and only if Mojang agrees |
-| **Signing** (Apple developer certificate, release signing keys) | The founder's | The Apple certificate is in his legal name: no | The Apple certificate never moves. Release keys stay in GitHub's protected environments, and the council team approves their use from step 2 |
-| **Money** (sponsorship, donations) | Personal accounts of the founder | Through a fiscal host | Section 12 |
-| **The founder's machines, AI accounts and password vault** | His | No | His own things: they never move. The project should depend on them less over time |
-
-**Order:** first the safety nets that remove a single point of failure (a second organisation owner, the bot's
-developer team, panel sub-users). Then the day-to-day powers (CODEOWNERS and release tools to the council team). Last,
-whatever needs a legal entity: domains, money, and with Mojang's agreement the sign-in app. Each step is a 2/3 poll,
-and the founder carries it out.
-
-## 12. Money
-
-*Placeholder: the options (Open Collective and others) are being researched.*
-
- The council approves every expense by a **2/3 poll**.
- **Every income and every expense is public.**
- Nobody votes on money paid to themselves.
-
-## 13. Transparency
-
- **#polls-and-decisions:** every poll and every result, posted by Kira, and the 24-hour discussions of nominations.
-  For polls that aren't about a person, each member's vote is shown once the poll closes. The results of elections
-  and body votes are posted there too; for elections, only the result.
- **#staff-log:** the free actions Kira sees (roles given or taken, bans, unbans), so the tier above can check them.
- **The decisions log:** Kira keeps an append-only record of every poll, emergency action, appointment and
-  step-down, with its date and result. It is public and machine-readable, so the agents can check a decision there.
- **This document** lives in horizon-rust/horizon as `GOVERNANCE.md`. A short summary is pinned in #rules and in
-  #polls-and-decisions.
- **Who holds which role:** the people page of playhorizon.dev's hub shows the council, the Team, the group leads,
-  the Chief of Mods, the moderators and Support.
- **#council** is private for discussion and for polls about people. Everything the council decides is published.
-
-## 14. Rules that are never voted on
-
-These are Horizon's conditions for existing, not choices. No poll can change them:
-
- Playing needs a **Microsoft account that owns Minecraft: Java Edition**. There is no play without one.
- **No Mojang files** in Horizon's repos or downloads. Players' own copies stay on their own machines.
- **No gambling**, in any form, including with in-game currency.
- **Mojang's and Microsoft's terms and Usage Guidelines** apply to everything Horizon does.
- **The law**, and the terms of service of Discord and GitHub.
-
-## 15. Changing this document
-
-A 2/3 council poll, then a pull request that a Team member merges. The council reviews the floors' numbers
-(section 5.2) once a year, or sooner if they turn out wrong.
@@ -109,7 +109,7 @@ horizon-ctl break -1 65 -3                              # mines it; replies with

 ## Build from source

-Needs Rust 1.90+, Python 3.11+, JDK 25, and on Linux `libasound2-dev libudev-dev`. `horizon-prepare` builds the game's resources from **your own copy** of Java Edition 26.3 (checked against `research-lock.json`) and never downloads it:
+Needs Rust 1.90+, Python 3.10+, JDK 25, and on Linux `libasound2-dev libudev-dev`. `horizon-prepare` builds the game's resources from **your own copy** of Java Edition 26.3 (checked against `research-lock.json`) and never downloads it:

 1. **Client:** play 26.3 once in the official launcher. Horizon reads `~/.minecraft` (or `--minecraft-dir` / `HORIZON_MINECRAFT_DIR`).
 2. **Server jar:** the 26.3 server jar (`downloads.server.url` in `versions/26.3/26.3.json`), passed once with `--server-jar` or `HORIZON_SERVER_JAR`.
@@ -135,8 +135,6 @@ python3 tools/pr_ready.py

 It runs rustfmt, clippy, the touched crates' tests, the Python tests, the public-tree check and the vanilla harnesses your change affects. Never commit game files, decompiled source or prepared resources.

-How Horizon is run (the council, theme groups and their leads, the Horizon Team, moderation): [GOVERNANCE.md](GOVERNANCE.md).
-
 ## Project status

 **Player-visible gaps: 0 open** of the 833 the [port ledger](tools/port_ledger.py) found, reading every vanilla 26.3 method against Horizon's code: vanilla behaviour a player would notice that Horizon doesn't have yet. By area: Animals [0](https://github.com/horizon-rust/horizon/issues/3512); Monsters and bosses [0](https://github.com/horizon-rust/horizon/issues/3513); Entities, projectiles, vehicles and decorations [0](https://github.com/horizon-rust/horizon/issues/3514); Items, enchantments and inventories [0](https://github.com/horizon-rust/horizon/issues/3515); Blocks, redstone and fluids [0](https://github.com/horizon-rust/horizon/issues/3516); World, world generation and saves [0](https://github.com/horizon-rust/horizon/issues/3517); Screens, HUD and client packets [0](https://github.com/horizon-rust/horizon/issues/3518); Entity and block rendering, models [0](https://github.com/horizon-rust/horizon/issues/3519); Server and players on the server [0](https://github.com/horizon-rust/horizon/issues/3520); Mob AI, villagers and raids [0](https://github.com/horizon-rust/horizon/issues/3521). This number goes down as gaps close (`tools/parity_gaps.py`); the table below says what the harnesses compare.
@@ -129,9 +129,8 @@ ports to WGSL of the optical flow and frame interpolation shaders of the
 [AMD FidelityFX SDK](https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK) 1.1.4
 (`sdk/include/FidelityFX/gpu/{opticalflow,frameinterpolation}`, at commit
 [c6efa6bf7f20](https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK/tree/c6efa6bf7f2027b3ec94f28578bb5965eabb9e55)),
-and `optical_flow.rs` and `interpolation.rs` follow the SDK's
-`sdk/src/components/{opticalflow/ffx_opticalflow.cpp,frameinterpolation/ffx_frameinterpolation.cpp}`
-(their passes, their order and their dispatch sizes). Copyright (C) 2024 Advanced Micro Devices,
+and `optical_flow.rs` follows the SDK's `sdk/src/components/opticalflow/ffx_opticalflow.cpp`
+(its passes, their order and their dispatch sizes). Copyright (C) 2024 Advanced Micro Devices,
 Inc., under the MIT license, whose text heads each file. AMD and FidelityFX are AMD's
 trademarks; Horizon is not affiliated with AMD.

@@ -358,29 +357,3 @@ state of Starling's `crates/horizon-client-render/src/touch.rs` at the same comm

 `crates/horizon-client-render/src/android_runtime.rs` and `android_runtime/tests/` are adapted from the
 input part of Starling's `crates/horizon-client-render/src/android_runtime.rs` at the same commit.
-
-## PCG3D hash
-
-`hash3` in `crates/horizon-client-render/src/hdr.wgsl`, the noise HDR10 output's dither is made from, is the
-`pcg3d` hash of Mark Jarzynski and Marc Olano ("Hash Functions for GPU Rendering", Journal of Computer Graphics
-Techniques 9(3), 2020), from <https://github.com/markjarzynski/PCG3D>. Copyright 2020 Mark Jarzynski & Marc Olano,
-licensed under MIT:
-
-```
-Copyright 2020 Mark Jarzynski & Marc Olano
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
-associated documentation files (the "Software"), to deal in the Software without restriction,
-including without limitation the rights to use, copy, modify, merge, publish, distribute,
-sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial
-portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
-NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
-OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-```
@@ -90,7 +90,6 @@ impl Report {
 /// The kind a file's extension says.
 pub fn kind_of(path: &Path) -> Option<Kind> {
    match path.extension()?.to_str()? {
-        "hmod" if horizon_mods::index::native::holds(path) => Some(Kind::NativeMod),
        "hmod" => Some(Kind::Mod),
        "hnmod" => Some(Kind::NativeMod),
        "hpack" => Some(Kind::Modpack),
@@ -377,13 +377,6 @@ mod tests {
        zip.finish().unwrap();
        let report = check::check(&hnmod, check::kind_of(&hnmod).unwrap(), None, None).unwrap();
        assert!(report.text().contains("machine_mod"), "{}", report.text());
-        let combined = dir.join("machine_mod.hmod");
-        std::fs::copy(&hnmod, &combined).unwrap();
-        assert_eq!(
-            check::kind_of(&combined),
-            Some(horizon_mods::index::Kind::NativeMod)
-        );
-        assert!(check::check(&combined, check::kind_of(&combined).unwrap(), None, None).is_ok());
        // A pin that is not a commit is refused; with none, the folder builds on the
        // instance's Horizon.
        let bad = [
@@ -80,8 +80,8 @@ pub fn main(args: &[String]) -> Result<(), String> {
            };
            let author = flag(rest, "--author").ok_or(USAGE)?;
            let (base, _) = registry::load(Path::new(base)).map_err(lines)?;
-            let (head, revoked) = registry::load(Path::new(head)).map_err(lines)?;
-            let review = registry::review_with_revoked(&base, &head, &revoked, author);
+            let (head, _) = registry::load(Path::new(head)).map_err(lines)?;
+            let review = registry::review(&base, &head, author);
            if rest.iter().any(|a| a == "--json") {
                let json = serde_json::json!({"errors": review.errors, "notes": review.notes});
                println!("{json}");
@@ -15,18 +15,10 @@ pub const OFFICIAL_SERVER: &str = "play.playhorizon.dev";
 /// `official_server_previous` in `launcher/links.json`).
 pub const OFFICIAL_SERVER_PREVIOUS: &[&str] = &["horizon.bunchy7s.dev"];

-/// Afri-Network, a partner server the game added once below the official server (#9299) until
-/// the partnership ended: kept so the game can take back out the entry it added.
-pub const WITHDRAWN_PARTNER_SERVER: &str = "afri-network.co.za";
-
 /// [`OFFICIAL_SERVER`] with the port its SRV record gives, for askers that don't look SRV up
 /// (the telemetry server's status checks).
 pub const OFFICIAL_SERVER_STATUS: &str = "play.playhorizon.dev:24454";

-/// Horizon's website, where the launcher is downloaded: the game started without its prepared
-/// files sends the player there.
-pub const WEBSITE: &str = "https://playhorizon.dev";
-
 /// The cosmetics service: cosmetics, emotes, "Show me as a Horizon player"
 /// (`HORIZON_COSMETICS_API` overrides it).
 pub const COSMETICS_API: &str = "https://cosmetics.playhorizon.dev";
@@ -21,6 +21,7 @@ use std::collections::BTreeMap;
 use serde::{Deserialize, Serialize};

 pub mod combat;
+pub mod prediction;
 pub mod timer;

 /// What one check's violation level leads to.
@@ -161,8 +162,8 @@ checks! {

    /// Prediction: each move played again from the client's own inputs with vanilla's movement code,
    /// and compared (speed, step, fly, jesus...). Each player's client ticks are recorded
-    /// (horizon-client's `lan::prediction::record`), with a ping a tick to place what the server changes,
-    /// and played again (`lan::prediction`). A move that lands farther than `tolerance` from the
+    /// (`prediction::Record`), with a ping a tick to place what the server changes, and played again
+    /// (horizon-client's `lan::prediction`). A move that lands farther than `tolerance` from the
    /// replay flags, by how far it lands (one `tolerance` off weighs 1, at most 5 a tick), and the
    /// setback puts the player back where its moves last agreed. A tick near what the replay can't
    /// play yet (another entity, a block change or abilities the client hadn't seen, a moving piston,
@@ -278,6 +279,15 @@ pub struct Player {
    pub timer: timer::Balance,
    /// The server tick and height where the ground last held the player.
    pub ground: Option<(u64, f64)>,
+    /// The client ticks the prediction plays again (only while it runs).
+    pub record: Option<Box<prediction::Record>>,
+    /// Sprinting as the client's own commands left it (ServerboundPlayerCommandPacket's
+    /// START_SPRINTING and STOP_SPRINTING: LocalPlayer.wasSprinting), which the record's ticks take.
+    /// Not the server's player: a hit with extra knockback stops its sprint
+    /// (Player.causeExtraKnockback), the client's own `Player.attack` doesn't (a mob's `hurtClient`
+    /// is false), and once the server's flag reaches it LocalPlayer.aiStep starts the sprint again
+    /// while the sprint key is held, with nothing to say: wasSprinting never changed.
+    pub sprinting: bool,
    /// The attacks of the client tick being heard.
    pub attacks: combat::Attacks,
 }
@@ -26,23 +26,18 @@ pub struct AnimationMetadata {
 pub enum ClipMode {
    /// `day_time`: frame 0 at time 0, the last at the cycle's end, then again.
    DayTime { cycle: i64 },
-    /// `screen_time`: the ticks the open screen has been open, over the cycle, held on the last
-    /// frame once it has run (it doesn't loop, measured on the real mod).
-    ScreenTime { cycle: i64 },
    /// `weather`: frame 0 in clear weather, 1 in rain, 2 in a storm (the rain and thunder levels
    /// added up), at most the last.
    Weather,
    /// A Polytone expression: its value's fraction is how far through the animation it is.
    Expression(String),
-    /// `game_time`, `season`: not driven; the animation runs on ticks.
+    /// `game_time`, `screen_time`, `season`: not driven yet; the animation runs on ticks.
    Unsupported(String),
 }

 /// The values [`ClipMode`]s read this frame.
 pub struct ModeInputs<'a> {
    pub day_time: i64,
-    /// The ticks the open screen has been open (0 without one).
-    pub screen_time: i64,
    /// The rain level plus the thunder level, 0 to 2.
    pub weather: f32,
    /// An expression's value this frame, by its source.
@@ -121,8 +116,7 @@ impl AnimationMetadata {
                    match mode.as_str() {
                        "day_time" => ClipMode::DayTime { cycle },
                        "weather" => ClipMode::Weather,
-                        "screen_time" => ClipMode::ScreenTime { cycle },
-                        "game_time" | "season" => ClipMode::Unsupported(mode),
+                        "game_time" | "screen_time" | "season" => ClipMode::Unsupported(mode),
                        _ => ClipMode::Expression(mode),
                    }
                }),
@@ -245,9 +239,6 @@ impl AnimationClip {
    pub fn sample_mode(&self, inputs: &ModeInputs) -> Option<AnimationSample> {
        let fraction = match self.mode.as_ref()? {
            ClipMode::DayTime { cycle } => day_fraction(inputs.day_time, *cycle),
-            ClipMode::ScreenTime { cycle } => {
-                (inputs.screen_time.max(0) as f64 / *cycle as f64).min(1.0 - f64::EPSILON)
-            }
            ClipMode::Weather => {
                let last = self.sequence.len() - 1;
                let index = (inputs.weather.max(0.0) as usize).min(last);
@@ -297,7 +288,6 @@ mod mode_tests {
        let expression = move |_: &str| Some(value);
        clip.sample_mode(&ModeInputs {
            day_time,
-            screen_time: day_time,
            weather,
            expression: &expression,
        })
@@ -312,13 +302,6 @@ mod mode_tests {
            .map(|t| frame(&day, t, 0.0, 0.0))
            .into();
        assert_eq!(frames, [0, 1, 2, 3, 1]);
-        // 26.3-6.8.6, four frames over 200 ticks: 40 ticks open show the first, and from ten
-        // seconds on the last, even after 27 (it doesn't loop).
-        let screen = clip(r#"{"frametime": 1, "mode": "screen_time", "time_cycle_duration": 200}"#);
-        let frames: Vec<u32> = [0, 40, 200, 360, 540]
-            .map(|t| frame(&screen, t, 0.0, 0.0))
-            .into();
-        assert_eq!(frames, [0, 0, 3, 3, 3]);
        let value = clip(r#"{"frametime": 1, "mode": "0.6"}"#);
        assert_eq!(frame(&value, 0, 0.0, 0.6), 2);
        assert_eq!(frame(&value, 0, 0.0, 2.0), 0);
@@ -338,7 +321,6 @@ mod mode_tests {
            clip(r#"{"frametime": 1}"#)
                .sample_mode(&ModeInputs {
                    day_time: 0,
-                    screen_time: 0,
                    weather: 0.0,
                    expression: &|_| None
                })
@@ -348,7 +330,6 @@ mod mode_tests {
            clip(r#"{"frametime": 1, "mode": "season"}"#)
                .sample_mode(&ModeInputs {
                    day_time: 0,
-                    screen_time: 0,
                    weather: 0.0,
                    expression: &|_| None
                })
@@ -1764,13 +1764,14 @@ fn stack_from_template(template: &Value) -> Option<StackView> {

 /// `RangeSelectItemModel.lastIndexLessOrEqual`.
 fn last_index_less_or_equal(entries: &[(f32, ItemModelNode)], needle: f32) -> Option<usize> {
-    let found = if entries.len() < 16 {
-        entries
+    let haystack: Vec<f32> = entries.iter().map(|e| e.0).collect();
+    let found = if haystack.len() < 16 {
+        haystack
            .iter()
-            .position(|e| e.0 > needle)
-            .map_or(entries.len() as i64 - 1, |i| i as i64 - 1)
+            .position(|h| *h > needle)
+            .map_or(haystack.len() as i64 - 1, |i| i as i64 - 1)
    } else {
-        match binary_search(entries, needle) {
+        match binary_search(&haystack, needle) {
            Ok(index) => index as i64,
            Err(insertion) => insertion as i64 - 1,
        }
@@ -1779,8 +1780,8 @@ fn last_index_less_or_equal(entries: &[(f32, ItemModelNode)], needle: f32) -> Op
 }
 /// `Arrays.binarySearch(float[], float)`, including its handling of equal
 /// values (-0.0 below 0.0, NaN above everything).
-fn binary_search(entries: &[(f32, ItemModelNode)], key: f32) -> std::result::Result<usize, usize> {
-    let (mut low, mut high) = (0i64, entries.len() as i64 - 1);
+fn binary_search(a: &[f32], key: f32) -> std::result::Result<usize, usize> {
+    let (mut low, mut high) = (0i64, a.len() as i64 - 1);
    let bits = |v: f32| -> i32 {
        if v.is_nan() {
            0x7fc0_0000
@@ -1790,7 +1791,7 @@ fn binary_search(entries: &[(f32, ItemModelNode)], key: f32) -> std::result::Res
    };
    while low <= high {
        let mid = (low + high) >> 1;
-        let value = entries[mid as usize].0;
+        let value = a[mid as usize];
        if value < key {
            low = mid + 1;
        } else if value > key {
@@ -158,61 +158,3 @@ fn a_patched_stack_reads_its_patch_over_its_items_defaults() {
    }
    assert_eq!(view.to_map(), *merged);
 }
-
-#[test]
-fn last_index_less_or_equal_linear_and_binary() {
-    use super::last_index_less_or_equal;
-    let make = |thresholds: &[f32]| -> Vec<(f32, ItemModelNode)> {
-        thresholds
-            .iter()
-            .map(|&t| (t, ItemModelNode::Empty))
-            .collect()
-    };
-
-    // Empty
-    assert_eq!(last_index_less_or_equal(&[], 0.0), None);
-
-    // Short (< 16): linear search
-    let short = make(&[-1.0, 0.0, 1.0, 2.5, 5.0]);
-    assert_eq!(last_index_less_or_equal(&short, -2.0), None);
-    assert_eq!(last_index_less_or_equal(&short, -1.0), Some(0));
-    assert_eq!(last_index_less_or_equal(&short, -0.5), Some(0));
-    assert_eq!(last_index_less_or_equal(&short, 0.0), Some(1));
-    assert_eq!(last_index_less_or_equal(&short, 2.5), Some(3));
-    assert_eq!(last_index_less_or_equal(&short, 3.0), Some(3));
-    assert_eq!(last_index_less_or_equal(&short, 5.0), Some(4));
-    assert_eq!(last_index_less_or_equal(&short, 10.0), Some(4));
-
-    // Long (>= 16): binary search
-    let thresholds: Vec<f32> = (0..32).map(|i| i as f32 * 10.0).collect();
-    let long = make(&thresholds);
-    assert_eq!(last_index_less_or_equal(&long, -5.0), None);
-    assert_eq!(last_index_less_or_equal(&long, 0.0), Some(0));
-    assert_eq!(last_index_less_or_equal(&long, 5.0), Some(0));
-    assert_eq!(last_index_less_or_equal(&long, 10.0), Some(1));
-    assert_eq!(last_index_less_or_equal(&long, 150.0), Some(15));
-    assert_eq!(last_index_less_or_equal(&long, 155.0), Some(15));
-    assert_eq!(last_index_less_or_equal(&long, 310.0), Some(31));
-    assert_eq!(last_index_less_or_equal(&long, 1000.0), Some(31));
-
-    // Short lists use upper-bound tie behavior, including signed zero.
-    let duplicates = make(&[1.0, 1.0, 2.0]);
-    assert_eq!(last_index_less_or_equal(&duplicates, 1.0), Some(1));
-
-    let zeroes = make(&[-0.0, 0.0]);
-    assert_eq!(last_index_less_or_equal(&zeroes, -0.0), Some(1));
-    assert_eq!(last_index_less_or_equal(&zeroes, 0.0), Some(1));
-
-    // At 16 entries, vanilla returns Arrays.binarySearch's hit, not the last tie.
-    // Expected indices were checked on the JVM.
-    let duplicates = make(&[
-        0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 7.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0,
-    ]);
-    assert_eq!(last_index_less_or_equal(&duplicates, 7.0), Some(7));
-
-    let zeroes = make(&[
-        -8.0, -7.0, -6.0, -5.0, -4.0, -3.0, -2.0, -0.0, -0.0, 0.0, 0.0, 1.0, 2.0, 3.0, 4.0, 5.0,
-    ]);
-    assert_eq!(last_index_less_or_equal(&zeroes, -0.0), Some(7));
-    assert_eq!(last_index_less_or_equal(&zeroes, 0.0), Some(9));
-}
@@ -1,7 +1,6 @@
 //! The machine a report was measured on. CPU, RAM and OS are detected here; the GPU and the display
 //! come from the program that rendered (the game knows its adapter, the launcher its window).

-#[cfg(any(target_os = "macos", target_os = "linux"))]
 use horizon_telemetry::system::command_output as output;
 use serde::{Deserialize, Serialize};

@@ -69,12 +68,12 @@ impl Hardware {
            os: std::env::consts::OS.to_owned(),
            os_version: os_version(),
            arch: std::env::consts::ARCH.to_owned(),
-            cpu: horizon_telemetry::system::cpu(),
+            cpu: cpu(),
            cpu_threads: std::thread::available_parallelism().ok().map(|n| n.get()),
            cpu_cores: probes.cores,
            cpu_base_mhz: probes.base,
            cpu_boost_mhz: probes.boost,
-            ram_mb: horizon_telemetry::system::ram_bytes().map(|b| b >> 20),
+            ram_mb: ram_bytes().map(|b| b >> 20),
            storage: None,
            form: probes.form,
            gpu: None,
@@ -110,16 +109,84 @@ fn probes() -> Probes {
    }
 }

+/// The one-minute load average: above about the number of threads the machine was busy.
+pub fn load_average() -> Option<f64> {
+    if cfg!(target_os = "macos") {
+        // "{ 1.23 1.10 1.00 }"
+        output("sysctl", &["-n", "vm.loadavg"])?
+            .trim_start_matches('{')
+            .split_whitespace()
+            .next()?
+            .parse()
+            .ok()
+    } else {
+        std::fs::read_to_string("/proc/loadavg")
+            .ok()?
+            .split_whitespace()
+            .next()?
+            .parse()
+            .ok()
+    }
+}
+
 /// `ac` or `battery`; `None` where it can't be read (and on machines without a battery on Linux).
 pub fn power_source() -> Option<&'static str> {
    horizon_telemetry::system::power()
 }

+/// Resident memory of a process, in bytes (macOS, Linux).
+pub fn rss_bytes(pid: u32) -> Option<u64> {
+    if cfg!(target_os = "macos") {
+        return output("ps", &["-o", "rss=", "-p", &pid.to_string()])?
+            .parse::<u64>()
+            .ok()
+            .map(|kb| kb * 1024);
+    }
+    let status = std::fs::read_to_string(format!("/proc/{pid}/status")).ok()?;
+    let line = status.lines().find(|l| l.starts_with("VmRSS:"))?;
+    line.split_whitespace()
+        .nth(1)?
+        .parse::<u64>()
+        .ok()
+        .map(|kb| kb * 1024)
+}
+
+/// CPU time a process has used, user and system, in seconds (macOS, Linux).
+pub fn cpu_seconds(pid: u32) -> Option<f64> {
+    if cfg!(target_os = "macos") {
+        // "[[dd-]hh:]mm:ss.cc"
+        let time = output("ps", &["-o", "time=", "-p", &pid.to_string()])?;
+        let (rest, days) = match time.split_once('-') {
+            Some((d, rest)) => (rest.to_owned(), d.parse::<f64>().ok()?),
+            None => (time, 0.0),
+        };
+        let seconds = rest.split(':').try_fold(0.0, |acc, part| {
+            part.parse::<f64>().ok().map(|v| acc * 60.0 + v)
+        })?;
+        return Some(days * 86_400.0 + seconds);
+    }
+    // utime and stime, fields 14 and 15, in clock ticks (100 per second on Linux).
+    let stat = std::fs::read_to_string(format!("/proc/{pid}/stat")).ok()?;
+    let fields: Vec<&str> = stat.rsplit_once(')')?.1.split_whitespace().collect();
+    let ticks: f64 = fields.get(11)?.parse::<f64>().ok()? + fields.get(12)?.parse::<f64>().ok()?;
+    Some(ticks / 100.0)
+}
+
 #[cfg(target_os = "macos")]
 fn os_version() -> Option<String> {
    output("sw_vers", &["-productVersion"])
 }

+#[cfg(target_os = "macos")]
+fn cpu() -> Option<String> {
+    output("sysctl", &["-n", "machdep.cpu.brand_string"])
+}
+
+#[cfg(target_os = "macos")]
+fn ram_bytes() -> Option<u64> {
+    output("sysctl", &["-n", "hw.memsize"])?.parse().ok()
+}
+
 #[cfg(target_os = "linux")]
 fn os_version() -> Option<String> {
    let release = std::fs::read_to_string("/etc/os-release").ok()?;
@@ -132,6 +199,22 @@ fn os_version() -> Option<String> {
    })
 }

+#[cfg(target_os = "linux")]
+fn cpu() -> Option<String> {
+    let info = std::fs::read_to_string("/proc/cpuinfo").ok()?;
+    // x86 names the CPU per core; arm64 only gives the core's implementer and part.
+    horizon_telemetry::system::linux_cpu_name(&info)
+}
+
+#[cfg(target_os = "linux")]
+fn ram_bytes() -> Option<u64> {
+    let info = std::fs::read_to_string("/proc/meminfo").ok()?;
+    let kb = key_value(&info, "MemTotal", ':')?
+        .trim_end_matches("kB")
+        .trim();
+    kb.parse::<u64>().ok().map(|kb| kb * 1024)
+}
+
 #[cfg(target_os = "linux")]
 fn key_value<'a>(text: &'a str, key: &str, sep: char) -> Option<&'a str> {
    text.lines().find_map(|line| {
@@ -145,11 +228,39 @@ fn os_version() -> Option<String> {
    horizon_telemetry::system::windows_version()
 }

+#[cfg(target_os = "windows")]
+fn cpu() -> Option<String> {
+    horizon_telemetry::system::windows_cpu()
+}
+
+#[cfg(target_os = "windows")]
+fn ram_bytes() -> Option<u64> {
+    let out = output(
+        "powershell",
+        &[
+            "-NoProfile",
+            "-Command",
+            "(Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory",
+        ],
+    )?;
+    out.parse().ok()
+}
+
 #[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
 fn os_version() -> Option<String> {
    None
 }

+#[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
+fn cpu() -> Option<String> {
+    None
+}
+
+#[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
+fn ram_bytes() -> Option<u64> {
+    None
+}
+
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -163,6 +274,9 @@ mod tests {
            assert!(hw.cpu.is_some(), "{hw:?}");
            assert!(hw.ram_mb.unwrap() > 256, "{hw:?}");
            assert!(hw.os_version.is_some(), "{hw:?}");
+            assert!(load_average().is_some());
+            assert!(rss_bytes(std::process::id()).unwrap() > 1 << 20);
+            assert!(cpu_seconds(std::process::id()).unwrap() >= 0.0);
        }
    }

@@ -13,9 +13,7 @@ use serde::{Deserialize, Serialize};

 mod hardware;

-pub use hardware::{power_source, Display, Gpu, Hardware};
-/// The process probes, from the platform (`horizon-system`).
-pub use horizon_telemetry::system::{cpu_seconds, load_average, rss_bytes};
+pub use hardware::{cpu_seconds, load_average, power_source, rss_bytes, Display, Gpu, Hardware};

 pub const FORMAT: &str = "horizon-benchmark-report";
 pub const VERSION: u32 = 1;
@@ -70,8 +70,6 @@ horizon-bots: load-test bots for a Minecraft Java Edition 26.3 server (offline m
                         other one 30 000 characters long), flood-book (100 pages of 1024 characters
                         into a writable book), flood-sign (four 384-character lines on the block
                         below), flood-recipe (recipe book placements)
-  --ack-mode MODE        chunk batch feedback: vanilla (default) or 64 (fixed chunks per tick);
-                         one ACK per completed batch; use explore for a controlled pacing test
  --flood N              packets a tick for the flood behaviours; default 100
  --attack NAME          attack the player NAME twice a second, from wherever the bot is (a reach test),
                         swinging after each attack as vanilla's client does. NAME,NAME...: each of them
@@ -173,8 +171,6 @@ struct Options {
    /// --crits: fight bots alternate jumped critical hits and sweeps at a sword's cooldown.
    crits: bool,
    flood: usize,
-    /// None uses vanilla estimation; --ack-mode 64 requests a fixed rate.
-    ack_rate: Option<f32>,
    no_read: bool,
    no_loaded: bool,
    height: f64,
@@ -213,7 +209,6 @@ fn options() -> Result<Options, String> {
        no_swing: false,
        crits: false,
        flood: 100,
-        ack_rate: None,
        no_read: false,
        no_loaded: false,
        height: 24.0,
@@ -271,13 +266,6 @@ fn options() -> Result<Options, String> {
                o.explore_speed = value.parse().map_err(|_| number("blocks a second"))?;
            }
            "--pvp" => o.pvp = value.parse().map_err(|_| number("true or false"))?,
-            "--ack-mode" => {
-                o.ack_rate = match value.as_str() {
-                    "vanilla" => None,
-                    "64" => Some(64.0),
-                    _ => return Err(format!("--ack-mode {value}: use vanilla or 64")),
-                };
-            }
            "--flood" => o.flood = value.parse().map_err(|_| number("packets a tick"))?,
            "--attack" => o.attack = Some(value),
            "--attack-after" => o.attack_after = value.parse().map_err(|_| number("seconds"))?,
@@ -962,7 +950,6 @@ fn read(
    writer: Arc<Mutex<ConnWriter>>,
    bot: Arc<Bot>,
    track: bool,
-    ack_rate: Option<f32>,
    mut capture: Option<Capture>,
 ) {
    use ids::play::clientbound as cb;
@@ -1048,8 +1035,7 @@ fn read(
                batch.finished(r.varint().unwrap_or(0));
                send(
                    play::Serverbound::ChunkBatchReceived(play::ChunkBatchReceived {
-                        chunks_per_tick: ack_rate
-                            .unwrap_or_else(|| batch.desired_chunks_per_tick()),
+                        chunks_per_tick: batch.desired_chunks_per_tick(),
                    })
                    .encode(),
                )
@@ -1153,8 +1139,7 @@ fn run_bot(
        let capture = (index == 0)
            .then(|| o.capture.as_deref().and_then(Capture::create))
            .flatten();
-        let ack_rate = o.ack_rate;
-        thread::spawn(move || read(reader, writer, bot, track, ack_rate, capture));
+        thread::spawn(move || read(reader, writer, bot, track, capture));
    }
    use ids::play::serverbound as sb;
    // Wait for the spawn position.
@@ -1534,7 +1519,6 @@ fn main() {
        "behaviour": o.behaviour,
        "seed": o.seed,
        "explore_speed": o.explore_speed,
-        "ack_mode": o.ack_rate.map_or("vanilla", |_| "64"),
        "pvp": o.pvp,
        "view_distance": o.view_distance,
        "seconds": o.seconds,
@@ -1600,83 +1584,6 @@ mod tests {
        AddEntity, Clientbound, MoveEntity, MoveEntityPos, RemoveEntities, SetEntityData, VecDelta,
    };

-    /// Exercise the production reader over framed connections. Pings are barriers
-    /// so extra ACKs are observable without sleeps or timing guesses.
-    fn check_chunk_acks(ack_rate: Option<f32>) {
-        use horizon_protocol::connection::Pipe;
-        let (client, server) = Pipe::pair();
-        let (reader, writer) = Connection::local(client).split();
-        let mut server = Connection::local(server);
-        server
-            .reader
-            .set_read_timeout(Some(Duration::from_secs(2)))
-            .unwrap();
-        let bot = Arc::new(Bot::default());
-        bot.online.store(true, Ordering::SeqCst);
-        let handle = thread::spawn(move || {
-            read(
-                reader,
-                Arc::new(Mutex::new(writer)),
-                bot,
-                false,
-                ack_rate,
-                None,
-            )
-        });
-        for (nonce, size) in [0, 1, 5].into_iter().enumerate() {
-            server
-                .send(&raw(ids::play::clientbound::CHUNK_BATCH_START, |_| {}))
-                .unwrap();
-            server
-                .send(&raw(ids::play::clientbound::PING, |w| w.i32(nonce as i32)))
-                .unwrap();
-            let (id, body) = server.recv().unwrap();
-            assert_eq!(
-                id,
-                ids::play::serverbound::PONG,
-                "batch start must not send an ACK"
-            );
-            assert_eq!(Reader::new(&body).i32().unwrap(), nonce as i32);
-            server
-                .send(&raw(ids::play::clientbound::CHUNK_BATCH_FINISHED, |w| {
-                    w.varint(size)
-                }))
-                .unwrap();
-            server
-                .send(&raw(ids::play::clientbound::PING, |w| w.i32(nonce as i32)))
-                .unwrap();
-            let (id, body) = server.recv().unwrap();
-            assert_eq!(id, ids::play::serverbound::CHUNK_BATCH_RECEIVED);
-            let rate = Reader::new(&body).f32().unwrap();
-            if let Some(fixed) = ack_rate {
-                assert_eq!(rate, fixed);
-            } else if size == 0 {
-                assert_eq!(rate, 3.5, "vanilla initial rate must remain the default");
-            } else {
-                assert!(rate.is_finite() && rate > 0.0);
-            }
-            let (id, body) = server.recv().unwrap();
-            assert_eq!(
-                id,
-                ids::play::serverbound::PONG,
-                "exactly one ACK per finished batch"
-            );
-            assert_eq!(Reader::new(&body).i32().unwrap(), nonce as i32);
-        }
-        server.writer.shutdown();
-        handle.join().unwrap();
-    }
-
-    #[test]
-    fn fixed_64_ack_is_sent_once_per_finished_batch() {
-        check_chunk_acks(Some(64.0));
-    }
-
-    #[test]
-    fn vanilla_acks_remain_once_per_finished_batch() {
-        check_chunk_acks(None);
-    }
-
    fn feed(entities: &mut Entities, packet: &Clientbound) {
        let bytes = packet.encode();
        let mut r = Reader::new(&bytes);
@@ -7,8 +7,6 @@ rust-version.workspace = true
 description = "The dedicated server's chat filter: its [chat_filter] settings, the slur list's matcher and the mutes, with no game state (docs/chat-filter.md)"

 [dependencies]
-# The hook the hub asks (`chat_guard`), and the moderation durations.
-horizon-server-files = { path = "../horizon-server-files" }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 toml = "1.1"
@@ -1,8 +1,8 @@
 //! The dedicated server's chat filter (docs/chat-filter.md), without the game: `server.toml`'s
 //! `[chat_filter]`, the matcher for the slur list (`data/slurs.txt`, or the owner's `words_file`), and
 //! the escalation (a refused message, then a mute, then a temporary ban), with the mutes kept in a file
-//! so that they outlive a restart. The server's hub (`horizon_client::lan`) asks it, through the engine's
-//! `horizon_server_files::chat_guard` hook, before it relays a player's text, and carries out what it decides.
+//! so that they outlive a restart. The server's hub (`horizon_client::lan`) asks it before it relays a
+//! player's text and carries out what it decides.

 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
@@ -10,11 +10,6 @@ use std::path::{Path, PathBuf};

 mod normalise;

-use horizon_server_files::chat_guard::{self, ChatGuard, Loaded, Place};
-pub use horizon_server_files::chat_guard::{Action, Mute};
-pub use horizon_server_files::duration::{
-    DurationUnit, duration_parts, duration_text, now_millis, parse_duration,
-};
 pub use normalise::{Run, Text};

 /// The list built into the game, used when `words_file` is empty.
@@ -223,59 +218,49 @@ fn fits(entry: &[Run], runs: &[Run], whole: bool) -> bool {
        .all(|(e, r)| e.letter == r.letter && r.count >= e.count)
 }

-/// A mute as the mutes file keeps it.
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
-struct SavedMute {
-    uuid: String,
-    name: String,
-    until: Option<i64>,
-    #[serde(default, skip_serializing_if = "Option::is_none")]
-    by: Option<String>,
-    #[serde(default, skip_serializing_if = "Option::is_none")]
-    reason: Option<String>,
+/// What a hit leads to.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Action {
+    /// The text is refused, nothing more.
+    Refused,
+    /// Refused, and the player can't chat until then (epoch milliseconds).
+    Muted { until: i64 },
+    /// Refused, and the player is banned until then.
+    Banned { until: i64 },
 }

-impl From<SavedMute> for Mute {
-    fn from(m: SavedMute) -> Self {
-        let SavedMute {
-            uuid,
-            name,
-            until,
-            by,
-            reason,
-        } = m;
-        Mute {
-            uuid,
-            name,
-            until,
-            by,
-            reason,
+impl Action {
+    pub fn name(self) -> &'static str {
+        match self {
+            Action::Refused => "refused",
+            Action::Muted { .. } => "muted",
+            Action::Banned { .. } => "banned",
        }
    }
 }

-impl From<Mute> for SavedMute {
-    fn from(m: Mute) -> Self {
-        let Mute {
-            uuid,
-            name,
-            until,
-            by,
-            reason,
-        } = m;
-        SavedMute {
-            uuid,
-            name,
-            until,
-            by,
-            reason,
-        }
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub struct Mute {
+    pub uuid: String,
+    pub name: String,
+    /// Epoch milliseconds; `None`: until `/unmute`.
+    pub until: Option<i64>,
+    /// The operator who muted them (`/mute`, `/tempmute`); `None`: the filter.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub by: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub reason: Option<String>,
+}
+
+impl Mute {
+    pub fn active(&self, now: i64) -> bool {
+        self.until.is_none_or(|until| until > now)
    }
 }

 #[derive(Default, Serialize, Deserialize)]
 struct MutesFile {
-    mutes: Vec<SavedMute>,
+    mutes: Vec<Mute>,
 }

 /// One player's hits: how many, and when the last one stops counting.
@@ -305,7 +290,7 @@ impl Guard {
        {
            for m in saved.mutes {
                if let Some(uuid) = parse_uuid(&m.uuid) {
-                    mutes.insert(uuid, m.into());
+                    mutes.insert(uuid, m);
                }
            }
        }
@@ -443,7 +428,7 @@ impl Guard {
        };
        let now = now_millis();
        self.mutes.retain(|_, m| m.active(now));
-        let mut mutes: Vec<SavedMute> = self.mutes.values().cloned().map(Into::into).collect();
+        let mut mutes: Vec<Mute> = self.mutes.values().cloned().collect();
        mutes.sort_by(|a, b| a.name.cmp(&b.name));
        if let Ok(text) = serde_json::to_string_pretty(&MutesFile { mutes }) {
            let tmp = file.with_extension("json.tmp");
@@ -454,94 +439,6 @@ impl Guard {
    }
 }

-impl ChatGuard for Guard {
-    fn matches(&self, text: &str) -> bool {
-        self.filter.matches(text)
-    }
-
-    fn muted(&self, uuid: u128, now: i64) -> Option<&Mute> {
-        Guard::muted(self, uuid, now)
-    }
-
-    fn mutes(&self, now: i64) -> Vec<&Mute> {
-        Guard::mutes(self, now)
-    }
-
-    fn mute(
-        &mut self,
-        uuid: u128,
-        name: &str,
-        until: Option<i64>,
-        by: &str,
-        reason: Option<String>,
-    ) {
-        Guard::mute(self, uuid, name, until, by, reason);
-    }
-
-    fn strike(&mut self, uuid: u128, name: &str, now: i64) -> (u32, Action) {
-        Guard::strike(self, uuid, name, now)
-    }
-
-    fn unmute(&mut self, name: &str) -> Option<String> {
-        Guard::unmute(self, name)
-    }
-
-    fn log(
-        &mut self,
-        now: i64,
-        name: &str,
-        uuid: u128,
-        place: Place,
-        count: u32,
-        action: Action,
-        text: &str,
-    ) -> Result<(), String> {
-        let path = &self.config.log;
-        if path.is_empty() {
-            return Ok(());
-        }
-        let line = log_line(now, name, uuid, place.name(), count, action, text);
-        append_log(Path::new(path), &line).map_err(|e| format!("{path}: {e}"))
-    }
-}
-
-/// `server.toml`'s `[chat_filter]` for the dedicated server ([`chat_guard::install`] it at startup): on
-/// by default, off (with an error logged) when the section is wrong. The mutes are kept in `dir`.
-pub fn load(server_toml: &str, dir: &Path) -> Loaded {
-    let mut loaded = Loaded::default();
-    let config = match Config::from_server_toml(server_toml) {
-        Ok(config) => config,
-        Err(e) => {
-            loaded.log.push((
-                "ERROR",
-                format!("server.toml: {e}; the chat filter stays off"),
-            ));
-            return loaded;
-        }
-    };
-    if !config.enabled {
-        return loaded;
-    }
-    let (guard, problem) = Guard::load(config, dir);
-    if let Some(problem) = problem {
-        loaded.log.push(("WARN", problem));
-    }
-    loaded.log.push((
-        "INFO",
-        format!(
-            "Chat filter on: {} words (server.toml [chat_filter]; enabled = false turns it off)",
-            guard.filter.len()
-        ),
-    ));
-    loaded.guard = Some(Box::new(guard));
-    loaded
-}
-
-/// Gives the dedicated server this chat filter.
-pub fn install() {
-    chat_guard::install(load);
-}
-
 /// One line of `logs/chat-filter.log`, without its newline.
 pub fn log_line(
    now: i64,
@@ -577,6 +474,61 @@ pub fn append_log(path: &Path, line: &str) -> std::io::Result<()> {
    writeln!(f, "{line}")
 }

+/// `/tempmute`'s duration in milliseconds: a positive whole number and a unit, `s`, `m`, `h`, `d` or
+/// `w` (`10m`, `2h`, `1d`).
+pub fn parse_duration(text: &str) -> Option<i64> {
+    let unit = match text.chars().last()? {
+        's' => 1_000,
+        'm' => MINUTE,
+        'h' => 60 * MINUTE,
+        'd' => 24 * 60 * MINUTE,
+        'w' => 7 * 24 * 60 * MINUTE,
+        _ => return None,
+    };
+    let count: i64 = text[..text.len() - 1].parse().ok()?;
+    (count > 0).then(|| count.checked_mul(unit)).flatten()
+}
+
+/// The unit used when presenting a moderation duration to a player.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum DurationUnit {
+    Minute,
+    Hour,
+    Day,
+}
+
+/// A duration's rounded count and unit, shared by logs and translated replies.
+pub fn duration_parts(millis: i64) -> (i64, DurationUnit) {
+    let (unit, kind) = if millis <= 60 * MINUTE {
+        (MINUTE, DurationUnit::Minute)
+    } else if millis <= 48 * 60 * MINUTE {
+        (60 * MINUTE, DurationUnit::Hour)
+    } else {
+        (24 * 60 * MINUTE, DurationUnit::Day)
+    };
+    (
+        millis.div_euclid(unit) + i64::from(millis.rem_euclid(unit) > 0),
+        kind,
+    )
+}
+
+/// `millis` for logs, rounded up: minutes up to an hour, hours up to two days, then days.
+pub fn duration_text(millis: i64) -> String {
+    let (count, unit) = duration_parts(millis);
+    let unit = match unit {
+        DurationUnit::Minute => "minute",
+        DurationUnit::Hour => "hour",
+        DurationUnit::Day => "day",
+    };
+    format!("{count} {unit}{}", if count == 1 { "" } else { "s" })
+}
+
+pub fn now_millis() -> i64 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .map_or(0, |d| d.as_millis() as i64)
+}
+
 /// `YYYY-MM-DDTHH:MM:SSZ` for epoch milliseconds.
 pub fn utc(millis: i64) -> String {
    let secs = millis.div_euclid(1000);
@@ -51,14 +51,8 @@ fn float(tag: Option<&Tag>) -> Option<f32> {
        other => int(Some(other))? as f32,
    })
 }
-/// `TagValueInput.getBooleanOr`: a number is true when its byte value is not 0.
 fn flag(tag: Option<&Tag>) -> Option<bool> {
-    Some(int(tag)? as i8 != 0)
-}
-/// `Codec.BOOL` through `NbtOps.getBooleanValue`: a number is true when it
-/// is not 0 as a whole (`doubleValue() != 0`), unlike `getBooleanOr`.
-fn codec_flag(tag: Option<&Tag>) -> Option<bool> {
-    Some(float(tag)? != 0.0)
+    Some(int(tag)? != 0)
 }
 fn boolean(v: bool) -> Tag {
    Tag::Byte(i8::from(v))
@@ -277,31 +271,15 @@ fn int_array(tag: Option<&Tag>) -> Option<&Vec<i32>> {
 fn is_pos(tag: &Tag) -> bool {
    matches!(tag, Tag::IntArray(v) if v.len() == 3)
 }
-/// The default `SignText`: four empty lines, black, not glowing.
-fn empty_sign_side() -> Tag {
-    Tag::compound([
-        ("messages", Tag::List(vec![string(""); 4])),
-        ("color", string("black")),
-        ("has_glowing_text", boolean(false)),
-    ])
-}
 /// The loaded `SignText` of one side, or the empty text.
 pub fn sign_side(tag: Option<&Tag>) -> Tag {
-    // `SignText.DIRECT_CODEC`: `messages` is a component list (an entry that
-    // fails is dropped, `ListCodec`'s partial result) cut to 4 lines by
-    // `Util.fixedSize`. Fewer than 4 valid lines fail the side, and
-    // `SignBlockEntity.loadAdditional` then loads an empty one; more keep the
-    // first 4 with the side's colour and glow.
-    let lines: Option<Vec<Tag>> = match tag.and_then(|t| t.get("messages")) {
-        Some(Tag::List(list)) => {
-            let lines: Vec<Tag> = list.iter().filter_map(component).take(4).collect();
-            (lines.len() == 4).then_some(lines)
-        }
-        _ => None,
-    };
-    let Some(messages) = lines else {
-        return empty_sign_side();
+    let empty = || string("");
+    let mut messages: Vec<Tag> = match tag.and_then(|t| t.get("messages")) {
+        Some(Tag::List(list)) => list.iter().filter_map(component).collect(),
+        _ => Vec::new(),
    };
+    messages.resize_with(4, empty);
+    messages.truncate(4);
    let mut out = vec![
        ("messages", Tag::List(messages)),
        (
@@ -314,7 +292,7 @@ pub fn sign_side(tag: Option<&Tag>) -> Tag {
        (
            "has_glowing_text",
            boolean(
-                tag.and_then(|t| codec_flag(t.get("has_glowing_text")))
+                tag.and_then(|t| flag(t.get("has_glowing_text")))
                    .unwrap_or(false),
            ),
        ),
@@ -874,32 +852,6 @@ mod tests {
        );
    }

-    /// `getBooleanOr` tests a number's byte value: an int 256 is false and
-    /// 257 true, for a sign's wax and a piston's flags alike.
-    #[test]
-    fn booleans_are_read_as_bytes() {
-        let sign = |waxed: &str| {
-            canon(&format!(
-                "{{id:\"minecraft:sign\",x:1,y:2,z:3,is_waxed:{waxed}}}"
-            ))
-            .get("is_waxed")
-            .cloned()
-        };
-        assert_eq!(sign("1b"), Some(Tag::Byte(1)));
-        assert_eq!(sign("256"), Some(Tag::Byte(0)));
-        assert_eq!(sign("257"), Some(Tag::Byte(1)));
-        // `SignText` reads `has_glowing_text` through `Codec.BOOL`, which tests
-        // the whole number: 256 is true there.
-        let glowing = canon(
-            r#"{id:"minecraft:sign",x:1,y:2,z:3,front_text:{messages:["","","",""],has_glowing_text:256}}"#,
-        );
-        let front = glowing.get("front_text").unwrap();
-        assert_eq!(front.get("has_glowing_text"), Some(&Tag::Byte(1)));
-        let piston = canon(r#"{id:"minecraft:piston",x:1,y:2,z:3,extending:256,source:513}"#);
-        assert_eq!(piston.get("extending"), Some(&Tag::Byte(0)));
-        assert_eq!(piston.get("source"), Some(&Tag::Byte(1)));
-    }
-
    #[test]
    fn every_type_has_defaults() {
        for id in TYPES.iter().chain(NEWEST.iter()) {
@@ -1005,32 +957,6 @@ mod tests {
        assert_eq!(structure.get("showboundingbox"), Some(&Tag::Byte(1)));
    }

-    #[test]
-    fn sign_side_needs_exactly_four_messages() {
-        let ok = snbt("{messages:[\"a\",\"\",\"\",\"\"],color:\"red\",has_glowing_text:1b}");
-        let side = sign_side(Some(&ok));
-        assert_eq!(side.get("color"), Some(&string("red")));
-        // A fifth line, or a bad entry among five, leaves the first 4 valid
-        // lines with the colour (checked against the 26.3 codec).
-        for kept in [
-            "{messages:[\"a\",\"\",\"\",\"\",\"e\"],color:\"red\",has_glowing_text:1b}",
-            "{messages:[\"a\",1,\"\",\"\",\"\"],color:\"red\",has_glowing_text:1b}",
-        ] {
-            let side = sign_side(Some(&snbt(kept)));
-            assert_eq!(side.get("messages"), ok.get("messages"), "{kept}");
-            assert_eq!(side.get("color"), Some(&string("red")), "{kept}");
-        }
-        for bad in [
-            "{color:\"red\",has_glowing_text:1b}",
-            "{messages:[\"a\",\"b\"],color:\"red\",has_glowing_text:1b}",
-            "{messages:[\"a\",\"\",\"\",1],color:\"red\",has_glowing_text:1b}",
-        ] {
-            let side = sign_side(Some(&snbt(bad)));
-            assert_eq!(side, sign_side(None), "{bad}");
-            assert_eq!(side.get("color"), Some(&string("black")));
-        }
-    }
-
    #[test]
    fn canonical_is_idempotent() {
        for id in TYPES.iter().chain(NEWEST.iter()) {
@@ -514,34 +514,6 @@ pub fn name_text(tag: &Tag) -> Text {
 #[cfg(test)]
 mod tests {
    use super::*;
-
-    #[test]
-    fn nested_fallback_references_stay_bounded() {
-        // 300 references to the argument, nested three deep: 27 million copies of "A" from a
-        // 4 KB component, which ran a client out of memory.
-        let bomb = |depth: usize, text: &str| {
-            let pattern = "%1$s".repeat(300);
-            let mut v = serde_json::json!({ "text": text });
-            for _ in 0..depth {
-                v = serde_json::json!({"translate": "x.unknown", "fallback": pattern, "with": [v]});
-            }
-            v
-        };
-        let started = std::time::Instant::now();
-        let text = to_text(&bomb(3, "A"), &mut |s| Text::literal(s));
-        assert!(text.spans.len() < 1 << 15, "{} spans", text.spans.len());
-        // One long argument referenced many times multiplies bytes, not spans.
-        let long = "B".repeat(64 << 10);
-        let text = to_text(&bomb(1, &long), &mut |s| Text::literal(s));
-        let bytes: usize = text.spans.iter().map(|s| s.text.len()).sum();
-        assert!(bytes <= 4 << 20, "{bytes} bytes");
-        assert!(started.elapsed() < std::time::Duration::from_secs(5));
-        // A real fallback still formats.
-        let ok = serde_json::json!({
-            "translate": "x.unknown", "fallback": "%1$s and %1$s", "with": [{"text": "A"}]
-        });
-        assert_eq!(to_text(&ok, &mut |s| Text::literal(s)).plain(), "A and A");
-    }
    use crate::lang::{self, Language, ResourceSource};

    struct Mem(std::collections::HashMap<String, Vec<u8>>);
@@ -74,70 +74,11 @@ pub trait ResourceSource {
        vec!["minecraft".into()]
    }
 }
-/// The bundled file a language reads, and whether it drops `ß`: a regional variant reads its
-/// language's file (Swiss German writes "ss" for "ß", as vanilla's de_ch does).
-fn bundled_code(code: &str) -> (&str, bool) {
-    match code {
-        "ko" => ("ko_kr", false),
-        "hr" => ("hr_hr", false),
-        "de_at" => ("de_de", false),
-        "de_ch" => ("de_de", true),
-        "fr_ca" | "fr_ch" => ("fr_fr", false),
-        "es_ar" | "es_cl" | "es_ec" | "es_mx" | "es_uy" | "es_ve" => ("es_es", false),
-        code => (code, false),
-    }
-}
-
-/// Lang files crates above the engine ship (`horizon_hooks::lang`), each a list of
-/// (code, JSON) pairs. The game's entry installs them once, before any language loads.
-static CRATE_FILES: std::sync::OnceLock<&'static [&'static [(&'static str, &'static str)]]> =
-    std::sync::OnceLock::new();
-
-/// Installs the crates' lang files (`horizon_hooks::lang::engine::all()`). Only the first call
-/// counts.
-pub fn install_crate_files(files: &'static [&'static [(&'static str, &'static str)]]) {
-    let _ = CRATE_FILES.set(files);
-}
-
-/// The crates' entries for language `code` (through [`bundled_code`]'s variants) that the
-/// engine's own `horizon` file for it doesn't have: on a key both have, the engine wins.
-fn read_crate_files(files: &[&[(&str, &str)]], code: &str, map: &mut HashMap<String, String>) {
-    if files.is_empty() {
-        return;
-    }
-    let (file, swiss) = bundled_code(code);
-    let mut own = HashMap::new();
-    if let Some(bytes) = Bundled.read(&format!("assets/horizon/lang/{code}.json")) {
-        read_lang_file(&bytes, &mut own);
-    }
-    for (c, json) in files.iter().flat_map(|f| f.iter()) {
-        if *c != file {
-            continue;
-        }
-        let mut theirs = HashMap::new();
-        if swiss {
-            read_lang_file(json.replace('ß', "ss").as_bytes(), &mut theirs);
-        } else {
-            read_lang_file(json.as_bytes(), &mut theirs);
-        }
-        for (key, value) in theirs {
-            if !own.contains_key(&key) {
-                map.insert(key, value);
-            }
-        }
-    }
-}
-
 /// Horizon's own strings, compiled in so they need no prepared resources.
 struct Bundled;
 impl ResourceSource for Bundled {
    fn read(&self, path: &str) -> Option<Vec<u8>> {
-        let code = path
-            .strip_prefix("assets/horizon/lang/")?
-            .strip_suffix(".json")?;
-        let (file, swiss) = bundled_code(code);
-        let path = format!("assets/horizon/lang/{file}.json");
-        let body = match path.as_str() {
+        let body = match path {
            "assets/horizon/lang/en_us.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/en_us.json")
            }
@@ -162,10 +103,10 @@ impl ResourceSource for Bundled {
            "assets/horizon/lang/tr_tr.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/tr_tr.json")
            }
-            "assets/horizon/lang/ko_kr.json" => {
+            "assets/horizon/lang/ko_kr.json" | "assets/horizon/lang/ko.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/ko_kr.json")
            }
-            "assets/horizon/lang/hr_hr.json" => {
+            "assets/horizon/lang/hr_hr.json" | "assets/horizon/lang/hr.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/hr_hr.json")
            }
            "assets/horizon/lang/pt_pt.json" => {
@@ -390,20 +331,30 @@ impl ResourceSource for Bundled {
            "assets/horizon/lang/vec_it.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/vec_it.json")
            }
-            "assets/horizon/lang/de_de.json" => {
+            "assets/horizon/lang/de_de.json" | "assets/horizon/lang/de_at.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/de_de.json")
            }
-            "assets/horizon/lang/fr_fr.json" => {
+            // Swiss German writes "ss" for "ß", as vanilla's de_ch does.
+            "assets/horizon/lang/de_ch.json" => {
+                let de = include_str!("../../horizon-client/assets/horizon/lang/de_de.json");
+                return Some(de.replace('ß', "ss").into_bytes());
+            }
+            "assets/horizon/lang/fr_fr.json"
+            | "assets/horizon/lang/fr_ca.json"
+            | "assets/horizon/lang/fr_ch.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/fr_fr.json")
            }
-            "assets/horizon/lang/es_es.json" => {
+            "assets/horizon/lang/es_es.json"
+            | "assets/horizon/lang/es_ar.json"
+            | "assets/horizon/lang/es_cl.json"
+            | "assets/horizon/lang/es_ec.json"
+            | "assets/horizon/lang/es_mx.json"
+            | "assets/horizon/lang/es_uy.json"
+            | "assets/horizon/lang/es_ve.json" => {
                include_str!("../../horizon-client/assets/horizon/lang/es_es.json")
            }
            _ => return None,
        };
-        if swiss {
-            return Some(body.replace('ß', "ss").into_bytes());
-        }
        Some(body.as_bytes().to_vec())
    }
    fn namespaces(&self) -> Vec<String> {
@@ -487,16 +438,6 @@ impl Language {
    /// from every namespace and every source in priority order (later sources
    /// override).
    pub fn load(sources: &[&dyn ResourceSource], code: &str) -> Self {
-        let crate_files = CRATE_FILES.get().copied().unwrap_or_default();
-        Self::load_with(sources, code, crate_files)
-    }
-
-    /// [`Language::load`] with these crates' lang files.
-    fn load_with(
-        sources: &[&dyn ResourceSource],
-        code: &str,
-        crate_files: &[&[(&str, &str)]],
-    ) -> Self {
        let mut map = HashMap::new();
        let mut codes = vec![DEFAULT];
        if code != DEFAULT {
@@ -512,14 +453,12 @@ impl Language {
            sources.iter().flat_map(|s| s.namespaces()).collect();
        for c in codes {
            for namespace in &namespaces {
-                for (i, source) in sources.iter().enumerate() {
-                    if let Some(bytes) = source.read(&format!("assets/{namespace}/lang/{c}.json")) {
-                        read_lang_file(&bytes, &mut map);
-                    }
-                    // The crates' text right after the engine's own (`Bundled`, the first source).
-                    if i == 0 && namespace == "horizon" {
-                        read_crate_files(crate_files, c, &mut map);
-                    }
+                for source in sources {
+                    let Some(bytes) = source.read(&format!("assets/{namespace}/lang/{c}.json"))
+                    else {
+                        continue;
+                    };
+                    read_lang_file(&bytes, &mut map);
                }
            }
        }
@@ -749,43 +688,6 @@ mod tests {
        );
    }

-    #[test]
-    fn a_crates_text_loads_after_the_engines_and_before_packs() {
-        static CRATE: &[(&str, &str)] = &[
-            (
-                "en_us",
-                r#"{"test.crate.hello": "Hello", "horizon.osk.close": "Shut", "test.crate.packed": "Crate"}"#,
-            ),
-            (
-                "de_de",
-                r#"{"test.crate.hello": "Grüß dich", "horizon.osk.close": "Zu"}"#,
-            ),
-            ("fr_fr", r#"{"test.crate.hello": "Bonjour"}"#),
-        ];
-        let pack = Mem(HashMap::from([(
-            "assets/horizon/lang/en_us.json".to_owned(),
-            br#"{"test.crate.packed": "Pack"}"#.to_vec(),
-        )]));
-        let load = |code| Language::load_with(&[&pack], code, &[CRATE]);
-        let en = load("en_us");
-        assert_eq!(en.get("test.crate.hello"), Some("Hello"));
-        // The engine's own file wins on a key both have; a pack wins over both.
-        assert_eq!(en.get("horizon.osk.close"), Some("Close"));
-        assert_eq!(en.get("test.crate.packed"), Some("Pack"));
-        let de = load("de_de");
-        assert_eq!(de.get("test.crate.hello"), Some("Grüß dich"));
-        assert_eq!(de.get("horizon.osk.close"), Some("Schließen"));
-        // Regional variants read their language's file, as the engine's do.
-        assert_eq!(load("de_ch").get("test.crate.hello"), Some("Grüss dich"));
-        assert_eq!(load("fr_ca").get("test.crate.hello"), Some("Bonjour"));
-        // A language the crate lacks falls back to its English.
-        assert_eq!(load("pl_pl").get("test.crate.hello"), Some("Hello"));
-        // Without crate files, nothing changes.
-        let plain = Language::load_with(&[&pack], "de_de", &[]);
-        assert_eq!(plain.get("test.crate.hello"), None);
-        assert_eq!(plain.len() + 1, de.len());
-    }
-
    #[test]
    fn a_scoped_language_is_the_calling_threads_and_reports_what_it_lacks() {
        let empty = Mem(HashMap::new());
@@ -837,20 +739,6 @@ mod tests {
        std::path::Path::new(env!("CARGO_MANIFEST_DIR"))
            .join("../horizon-client/assets/horizon/lang")
    }
-    /// The crates whose own lang files the game loads (`crates/<name>/assets/lang`,
-    /// registered through `horizon_hooks::lang`), with that folder.
-    fn crate_lang_dirs() -> Vec<(String, std::path::PathBuf)> {
-        let crates = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..");
-        let mut dirs: Vec<_> = std::fs::read_dir(&crates)
-            .unwrap()
-            .flatten()
-            .map(|e| (e.file_name().into_string().unwrap(), e.path()))
-            .map(|(name, path)| (name, path.join("assets/lang")))
-            .filter(|(_, dir)| dir.join("en_us.json").is_file())
-            .collect();
-        dirs.sort();
-        dirs
-    }
    /// The keys of a flat bundled file in file order, duplicates included (a map
    /// would keep only the last of two equal keys). One `"key": "value"` per line.
    fn file_keys(body: &str) -> Vec<String> {
@@ -888,33 +776,11 @@ mod tests {

    #[test]
    fn bundled_files_are_served_and_have_no_stale_or_repeated_keys() {
-        let engine = check_lang_dir(&bundled_dir(), true);
-        assert!(
-            engine.1 >= 7,
-            "found {} bundled lang files in {}",
-            engine.1,
-            bundled_dir().display()
-        );
-        // A crate's files pass the same checks. Its keys are its own: on a key the engine's
-        // files also have, the engine's text would win and hide the crate's.
-        for (name, dir) in crate_lang_dirs() {
-            let (en, _) = check_lang_dir(&dir, false);
-            for key in en.keys() {
-                assert!(
-                    !engine.0.contains_key(key),
-                    "{name}: {key} is also the engine's"
-                );
-            }
-        }
-    }
-
-    /// The checks every lang folder passes: flat maps, no repeated key, no key en_us lacks, the
-    /// same placeholders as English, no empty text. Its en_us and how many files it has.
-    fn check_lang_dir(dir: &std::path::Path, bundled: bool) -> (HashMap<String, String>, usize) {
+        let dir = bundled_dir();
        let en_body = std::fs::read_to_string(dir.join("en_us.json")).unwrap();
        let en: HashMap<String, String> = serde_json::from_str(&en_body).unwrap();
        let mut seen = 0;
-        for entry in std::fs::read_dir(dir).unwrap().flatten() {
+        for entry in std::fs::read_dir(&dir).unwrap().flatten() {
            let name = entry.file_name().into_string().unwrap();
            let Some(code) = name.strip_suffix(".json") else {
                continue;
@@ -923,7 +789,7 @@ mod tests {
            // A file that Bundled::read does not name is never loaded.
            let path = format!("assets/horizon/lang/{name}");
            assert!(
-                !bundled || Bundled.read(&path).is_some(),
+                Bundled.read(&path).is_some(),
                "{name} is not served by Bundled"
            );
            let body = std::fs::read_to_string(entry.path()).unwrap();
@@ -949,7 +815,11 @@ mod tests {
                assert!(!value.trim().is_empty(), "{code}: {key} is empty");
            }
        }
-        (en, seen)
+        assert!(
+            seen >= 7,
+            "found {seen} bundled lang files in {}",
+            dir.display()
+        );
    }

    #[test]
@@ -964,10 +834,10 @@ mod tests {
                }
            }
        }
-        let english = |dir: &std::path::Path| -> HashMap<String, String> {
-            serde_json::from_str(&std::fs::read_to_string(dir.join("en_us.json")).unwrap()).unwrap()
-        };
-        let mut en = english(&bundled_dir());
+        let en: HashMap<String, String> = serde_json::from_str(
+            &std::fs::read_to_string(bundled_dir().join("en_us.json")).unwrap(),
+        )
+        .unwrap();
        let crates = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..");
        let mut files = Vec::new();
        for krate in [
@@ -977,11 +847,6 @@ mod tests {
        ] {
            rust_files(&crates.join(krate).join("src"), &mut files);
        }
-        // A crate that ships lang files names its keys in its own sources.
-        for (name, dir) in crate_lang_dirs() {
-            en.extend(english(&dir));
-            rust_files(&crates.join(name).join("src"), &mut files);
-        }
        assert!(files.len() > 100, "found only {} sources", files.len());
        let mut found = 0;
        for file in files {
@@ -529,13 +529,10 @@ impl Team {
            None => t,
        }
    }
-    /// `PlayerTeam.getFormattedDisplayName`: the display name in the team's
-    /// `displayNameStyle`, which its constructor makes the team's name on hover
-    /// (`ShowText`) and as insertion.
+    /// `PlayerTeam.getFormattedDisplayName`.
    pub fn formatted_display_name(&self) -> Text {
        let inner = hover_name(comp_text(&self.display_name), &self.name).with_style(&Style {
            click: None,
-            insertion: Some(self.name.clone()),
            ..Style::default()
        });
        self.apply_color(bracketed(inner))
@@ -1414,21 +1411,6 @@ fn finish(node: &mut serde_json::Map<String, Value>, extra: Vec<Comp>) -> Comp {
 #[cfg(test)]
 mod tests {
    use super::*;
-    /// #14279: `PlayerTeam`'s `displayNameStyle` puts the team's name on hover
-    /// and as insertion; `getFormattedDisplayName` brackets the name in it.
-    #[test]
-    fn a_teams_formatted_name_inserts_the_team_name() {
-        let team = Team::new("reds");
-        let c = team.formatted_display_name().component();
-        assert_eq!(c["translate"], "chat.square_brackets");
-        let inner = &c["with"][0];
-        assert_eq!(inner["text"], "reds");
-        assert_eq!(inner["insertion"], "reds");
-        assert_eq!(inner["hover_event"]["action"], "show_text");
-        // `{"text":"reds"}` or its short form `"reds"`: the same component.
-        let value = &inner["hover_event"]["value"];
-        assert!(value == "reds" || value["text"] == "reds", "{value}");
-    }

    fn board() -> Scoreboard {
        let mut sb = Scoreboard::default();
@@ -320,12 +320,7 @@ pub fn java_hash_order(
        "FallFlying",
        "sleeping_pos",
        "Brain",
-        "last_hurt_by_player",
-        "last_hurt_by_player_memory_time",
-        "last_hurt_by_mob",
-        "ticks_since_last_hurt_by_mob",
        "equipment",
-        "locator_bar_icon",
        // ArmorStand.
        "Invisible",
        "Small",
@@ -342,12 +337,6 @@ pub fn java_hash_order(
        "immovable",
        "description",
        "hide_description",
-        // Interaction.addAdditionalSaveData.
-        "width",
-        "height",
-        "attack",
-        "interaction",
-        "response",
    ];
    // BlockEntity.saveMetadata writes the position after the entity's data.
    const AFTER: &[&str] = &["x", "y", "z"];
@@ -447,20 +436,6 @@ mod tests {
        );
    }
    #[test]
-    fn interaction_compound_orders_width_before_interaction_in_shared_bucket() {
-        // `width` and `interaction` share a bucket at every table size;
-        // `Interaction.addAdditionalSaveData` writes `width` first.
-        let tag = parse_snbt(
-            r#"{Air:300s,Fire:0s,Invulnerable:0b,Motion:[0.0d,0.0d,0.0d],OnGround:0b,PortalCooldown:0,Pos:[4.5d,100.0d,4.5d],Rotation:[0.0f,0.0f],UUID:[I;66,0,0,1],fall_distance:0.0d,height:1.25f,interaction:{player:[I;1,2,3,4],timestamp:9L},response:0b,width:1.0f}"#,
-        )
-        .unwrap()
-        .0;
-        assert_eq!(
-            pretty(&tag).plain(),
-            "{Motion: [0.0d, 0.0d, 0.0d], Invulnerable: 0b, fall_distance: 0.0d, Air: 300s, OnGround: 0b, PortalCooldown: 0, Rotation: [0.0f, 0.0f], Pos: [4.5d, 100.0d, 4.5d], response: 0b, Fire: 0s, width: 1.0f, interaction: {player: [I; 1, 2, 3, 4], timestamp: 9L}, UUID: [I; 66, 0, 0, 1], height: 1.25f}",
-        );
-    }
-    #[test]
    fn compact_form_matches_vanilla() {
        assert_eq!(
            rt("{b:1b,a:\"x\",c:[1,2],d:1.5f,e:2d,f:3L,g:4s}"),
@@ -282,20 +282,17 @@ impl Text {
    pub fn push(&mut self, other: impl Into<Text>) {
        let other = other.into();
        let sibling = other.component();
-        // The tree is appended to in place: cloning all of it on every append made a component
-        // with N siblings (a server's chat or MOTD "extra") cost N^2.
-        let root = match self.source.take() {
-            None if self.spans.is_empty() => std::sync::Arc::new(json!({ "text": "" })),
-            None => std::sync::Arc::new(self.component()),
-            Some(c) => c,
-        };
-        let mut root = if STYLE_KEYS.iter().any(|k| root.get(*k).is_some()) {
-            let c = std::sync::Arc::try_unwrap(root).unwrap_or_else(|c| (*c).clone());
-            std::sync::Arc::new(json!({ "text": "", "extra": [c] }))
+        let mut root = if self.spans.is_empty() && self.source.is_none() {
+            json!({ "text": "" })
        } else {
-            root
+            let c = self.component();
+            if STYLE_KEYS.iter().any(|k| c.get(*k).is_some()) {
+                json!({ "text": "", "extra": [c] })
+            } else {
+                c
+            }
        };
-        if let Value::Object(o) = std::sync::Arc::make_mut(&mut root) {
+        if let Value::Object(o) = &mut root {
            match o.get_mut("extra") {
                Some(Value::Array(a)) => a.push(sibling),
                _ => {
@@ -303,7 +300,7 @@ impl Text {
                }
            }
        }
-        self.source = Some(root);
+        self.source = Some(root.into());
        self.spans.extend(other.spans);
    }
    /// Apply `style` underneath every span (MutableComponent.withStyle on a parent).
@@ -674,22 +671,11 @@ pub fn legacy_format(style: &Style, code: char, reset: &Style) -> Style {
    s
 }

-/// The most spans one translation expands to. Vanilla's `TranslatableContents.decompose` keeps
-/// references to its arguments, so its cost stays linear in the input; copying them here makes
-/// nested `%1$s` templates multiply (`k` references nested `D` deep: `k^D` copies), and a server's
-/// `fallback` template is any text it likes.
-const MAX_TRANSLATION_SPANS: usize = 1 << 15;
-/// The most text one translation expands to: one long argument referenced many times multiplies
-/// bytes, not spans.
-const MAX_TRANSLATION_BYTES: usize = 1 << 22;
-
 /// TranslatableContents.decomposeTemplate: `%s` takes the next argument,
 /// `%n$s` a numbered one and `%%` is a percent sign. Malformed templates are
-/// shown verbatim, and so is one that would expand past [`MAX_TRANSLATION_SPANS`] or
-/// [`MAX_TRANSLATION_BYTES`].
+/// shown verbatim.
 pub fn format_translation(template: &str, args: &[Text]) -> Text {
    let mut out = Text::default();
-    let mut bytes = 0usize;
    let mut literal = String::new();
    let mut next = 0usize;
    let chars: Vec<char> = template.chars().collect();
@@ -739,14 +725,6 @@ pub fn format_translation(template: &str, args: &[Text]) -> Text {
                let Some(arg) = args.get(index) else {
                    return Text::literal(template);
                };
-                bytes = bytes
-                    .saturating_add(literal.len())
-                    .saturating_add(arg.spans.iter().map(|s| s.text.len()).sum());
-                if out.spans.len().saturating_add(arg.spans.len()) >= MAX_TRANSLATION_SPANS
-                    || bytes > MAX_TRANSLATION_BYTES
-                {
-                    return Text::literal(template);
-                }
                if !literal.is_empty() {
                    out.spans.push(Span {
                        text: std::mem::take(&mut literal),
@@ -772,42 +750,6 @@ pub fn format_translation(template: &str, args: &[Text]) -> Text {
 mod tests {
    use super::*;
    #[test]
-    fn appending_builds_the_same_tree_in_linear_time() {
-        // A styled text is wrapped once, so its style doesn't reach what follows; a plain one
-        // takes the siblings itself; a copy taken before an append keeps its own tree.
-        let mut styled = Text::literal("a").with_style(&Style {
-            bold: Some(true),
-            ..Style::default()
-        });
-        styled.push(Text::literal("b"));
-        let before = styled.clone();
-        styled.push(Text::literal("c"));
-        assert_eq!(
-            styled.component(),
-            json!({"text": "", "extra": [{"text": "a", "bold": true}, {"text": "b"}, {"text": "c"}]})
-        );
-        assert_eq!(
-            before.component(),
-            json!({"text": "", "extra": [{"text": "a", "bold": true}, {"text": "b"}]})
-        );
-        let mut plain = Text::default();
-        plain.push(Text::literal("x"));
-        plain.push(Text::literal("y"));
-        assert_eq!(
-            plain.component(),
-            json!({"text": "", "extra": [{"text": "x"}, {"text": "y"}]})
-        );
-        // 20 000 siblings, as a server's chat may carry: 76 s before, as each append cloned the
-        // whole tree.
-        let started = std::time::Instant::now();
-        let mut long = Text::default();
-        for _ in 0..20_000 {
-            long.push(Text::literal("a"));
-        }
-        assert_eq!(long.spans.len(), 20_000);
-        assert!(started.elapsed() < std::time::Duration::from_secs(5));
-    }
-    #[test]
    fn click_events_serialize_and_inherit_as_one_style_field() {
        for (event, json) in [
            (
@@ -9,15 +9,15 @@ description = "The client's input layer: key bindings and their names, mouse, co
 [dependencies]
 horizon-client-core = { path = "../horizon-client-core" }
 winit = "0.30.13"
+# The window icon.
+horizon-theme = { path = "../horizon-theme" }
 png = "0.18"
 arboard = { version = "3.6.1", default-features = false, features = ["wayland-data-control"] }
-
-[dev-dependencies]
-# The window icon test decodes Horizon's icon.
-horizon-theme = { path = "../horizon-theme" }
+# The DualSense's trigger effects (the `controllers` feature).
+horizon-dualsense = { path = "../horizon-dualsense", optional = true }

 [features]
-controllers = []
+controllers = ["dep:horizon-dualsense"]

 [lints]
 workspace = true
@@ -98,7 +98,6 @@ actions! {
    Emote, "key.emote", Some(KeyCode::KeyB);
    HotbarPrevious, "pad.hotbarPrevious", None;
    HotbarNext, "pad.hotbarNext", None;
-    Radial, "pad.radial", None;
 }

 impl Action {
@@ -253,17 +253,6 @@ impl Activity {
 /// Horizon's pad-only actions (no vanilla key mapping).
 pub const HOTBAR_PREVIOUS: &str = "pad.hotbarPrevious";
 pub const HOTBAR_NEXT: &str = "pad.hotbarNext";
-/// Held, opens the radial menu (`radial.rs`).
-pub const RADIAL: &str = "pad.radial";
-
-mod radial_file;
-pub use radial_file::{RadialMode, RadialStick, opener_refused};
-
-/// The `bindLayout` the settings file is written in. 1: the defaults of the binds list as they
-/// are; 2: the radial menu's opener resolved against the player's own buttons.
-const BIND_LAYOUT: u32 = 2;
-/// The layout from which the file, not the default, says where the opener is.
-const OPENER_LAYOUT: u32 = 2;

 /// Bindable actions and their default buttons: vanilla key mappings (the
 /// game acts as their default key) and Horizon's pad-only actions. Start is
@@ -282,7 +271,6 @@ pub const ACTIONS: &[(&str, Option<Button>)] = &[
    ("key.togglePerspective", Some(Button::Select)),
    ("key.pickItem", Some(Button::DPadLeft)),
    ("key.chat", Some(Button::DPadUp)),
-    (RADIAL, Some(Button::DPadRight)),
    ("key.advancements", None),
    ("key.playerlist", None),
    ("key.command", None),
@@ -315,14 +303,11 @@ pub enum Route {
    HotbarStep {
        next: bool,
    },
-    Radial,
    /// Held, or flipped when the pad's toggle sneak is on.
    Sneak,
    Screenshot,
    SmoothCamera,
    Fullscreen,
-    /// F3's debug screen, shown or hidden as F3 alone does.
-    DebugOverlay,
    /// Does nothing by itself: what reads it asks whether the button is held
    /// (`Minecraft.handleKeybinds`' toolbar keys, held with a hotbar key).
    Held,
@@ -335,12 +320,10 @@ pub fn route(action: &str) -> Option<Route> {
    match action {
        HOTBAR_PREVIOUS => Some(Route::HotbarStep { next: false }),
        HOTBAR_NEXT => Some(Route::HotbarStep { next: true }),
-        RADIAL => Some(Route::Radial),
        "key.sneak" => Some(Route::Sneak),
        "key.screenshot" => Some(Route::Screenshot),
        "key.smoothCamera" => Some(Route::SmoothCamera),
        "key.fullscreen" => Some(Route::Fullscreen),
-        "key.debug.overlay" => Some(Route::DebugOverlay),
        "key.saveToolbarActivator" | "key.loadToolbarActivator" => Some(Route::Held),
        _ => {
            let default = crate::keybinds::KeyBinds::default_of(action);
@@ -351,16 +334,12 @@ pub fn route(action: &str) -> Option<Route> {
    }
 }

-/// The radial menu's opener, as the binds list and the gameplay guide name it.
-pub const RADIAL_CAPTION: &str = "horizon.pad.action.radial";
-
 /// An action's name in the binds list: vanilla's translation key, or
 /// Horizon's own English for the pad-only actions.
 pub fn action_caption(action: &str) -> &str {
    match action {
        HOTBAR_PREVIOUS => "Hotbar: Previous Slot",
        HOTBAR_NEXT => "Hotbar: Next Slot",
-        RADIAL => RADIAL_CAPTION,
        other => other,
    }
 }
@@ -675,21 +654,6 @@ pub struct PadSettings {
    pub repeat_interval: f32,
    /// Action name -> button, `None` for unbound; missing means the default.
    bindings: BTreeMap<&'static str, Option<Button>>,
-    /// The radial menu's pages.
-    pub radial: crate::radial::Pages,
-    /// Whether the radial menu's opener is held or pressed once.
-    pub radial_mode: RadialMode,
-    /// The stick that selects in it.
-    pub radial_stick: RadialStick,
-    /// Lines this game doesn't read (a newer Horizon's settings, an action it doesn't have, a
-    /// button it doesn't know), kept as they were so a save here loses nothing.
-    extra: Vec<(String, String)>,
-    /// The newest `bindLayout` the file has been written in: this game's, or a newer Horizon's,
-    /// kept so that one doesn't resolve its file again as older than it is.
-    bind_layout: u32,
-    /// The opener last used with each stick (`RadialStick::ALL` order), so stepping the Selects
-    /// With row and back gives each stick's own opener again.
-    openers: radial_file::StickOpeners,
 }
 impl Default for PadSettings {
    fn default() -> Self {
@@ -716,12 +680,6 @@ impl Default for PadSettings {
            repeat_delay: 0.35,
            repeat_interval: 0.09,
            bindings: BTreeMap::new(),
-            radial: Default::default(),
-            radial_mode: RadialMode::Hold,
-            radial_stick: RadialStick::Right,
-            extra: Vec::new(),
-            bind_layout: BIND_LAYOUT,
-            openers: radial_file::StickOpeners::default(),
        }
    }
 }
@@ -748,7 +706,6 @@ impl PadSettings {
    }
    pub fn parse(text: &str) -> Self {
        let mut s = Self::default();
-        let mut saved_opener = None;
        for line in text.lines() {
            let Some((key, value)) = line.split_once(':') else {
                continue;
@@ -797,85 +754,22 @@ impl PadSettings {
                "scrollSpeed" => s.scroll_speed = bounded(s.scroll_speed, 1.0, 36.0),
                "repeatDelay" => s.repeat_delay = bounded(s.repeat_delay, 0.1, 1.0),
                "repeatInterval" => s.repeat_interval = bounded(s.repeat_interval, 0.03, 0.3),
-                "radialMode" => s.radial_mode = RadialMode::parse(value),
-                "radialStick" => s.radial_stick = RadialStick::parse(value),
-                // Read after the loop, from the whole text.
-                "bindLayout" => {}
-                // The radial menu's pages (`radial::Pages::parse`).
-                other if other.starts_with("radial_") || other == crate::radial::LAYOUT_KEY => {}
                other => {
-                    let known = other
-                        .strip_prefix("bind_")
-                        .filter(|action| ACTIONS.iter().any(|a| a.0 == *action));
-                    let button = if value == "none" {
-                        Some(None)
-                    } else {
-                        Button::parse(value).map(Some)
-                    };
-                    match (known, button) {
-                        // The opener once the selecting stick is known.
-                        (Some(RADIAL), Some(button)) => saved_opener = Some(button),
-                        (Some(action), Some(button)) => s.bind(action, button),
-                        _ => s.extra.push((other.to_owned(), value.to_owned())),
+                    if let Some(action) = other.strip_prefix("bind_") {
+                        let button = if value == "none" {
+                            Some(None)
+                        } else {
+                            Button::parse(value).map(Some)
+                        };
+                        if let Some(button) = button {
+                            s.bind(action, button);
+                        }
                    }
                }
            }
        }
-        // An opener on a button it can't be with this stick reads as never saved.
-        let refused_opener = match saved_opener {
-            Some(Some(b)) if opener_refused(s.radial_stick, b) => true,
-            Some(button) => {
-                s.bind(RADIAL, button);
-                false
-            }
-            None => false,
-        };
-        if let Some(pages) = crate::radial::Pages::parse(
-            text.lines()
-                .filter_map(|line| line.split_once(':'))
-                .map(|(key, value)| (key.trim(), value.trim())),
-        ) {
-            s.radial = pages;
-        }
-        let lines = || text.lines().map(str::trim);
-        let saved = |action: &str| {
-            let prefix = format!("bind_{action}:");
-            lines().any(|line| line.starts_with(&prefix))
-        };
-        // The layout the file was written in; none in a file from before these defaults.
-        let layout = lines()
-            .find_map(|line| line.strip_prefix("bindLayout:"))
-            .map(|value| value.trim().parse::<u32>().unwrap_or(0));
-        s.bind_layout = layout.map_or(BIND_LAYOUT, |layout| layout.max(BIND_LAYOUT));
-        // Once, for a file from before the radial menu's opener, or one with the opener on a
-        // button it can no longer be: a button the player bound by hand stays theirs, and the
-        // opener's default doesn't take it. From then on the file says where the opener is, and
-        // a conflict made since stays shown in the binds list.
-        let before_opener = layout.is_none_or(|layout| layout < OPENER_LAYOUT);
-        if !text.is_empty() && (refused_opener || (before_opener && !saved(RADIAL))) {
-            let default_opener = ACTIONS
-                .iter()
-                .find(|(action, _)| *action == RADIAL)
-                .and_then(|(_, button)| *button);
-            let taken = s.bindings.iter().any(|(action, button)| {
-                *action != RADIAL && button.is_some() && *button == default_opener
-            });
-            if taken {
-                s.bindings.insert(RADIAL, None);
-            }
-        }
-        // The default too can be under the selecting thumb (D-pad Right, the left stick
-        // selecting): no button opens the menu until the player picks one.
-        if s.binding(RADIAL)
-            .is_some_and(|b| opener_refused(s.radial_stick, b))
-        {
-            s.bindings.insert(RADIAL, None);
-        }
-        // A file from before these defaults: its player's buttons stay where they were, and
-        // nothing they saved shares a button with the radial menu's opener. They can bind one
-        // in the binds list.
-        if !text.is_empty() && layout.is_none() {
-            s.bindings.entry(RADIAL).or_insert(None);
+        // A file from before these defaults: its player's buttons stay where they were.
+        if !text.is_empty() && !text.lines().any(|line| line.starts_with("bindLayout:")) {
            for (action, button) in [
                ("key.drop", Button::East),
                ("key.togglePerspective", Button::DPadUp),
@@ -884,7 +778,10 @@ impl PadSettings {
                ("key.advancements", Button::DPadDown),
            ] {
                // A button saved by hand stays, even one that's now this action's default.
-                if !saved(action) {
+                if !text
+                    .lines()
+                    .any(|line| line.starts_with(&format!("bind_{action}:")))
+                {
                    s.bindings.entry(action).or_insert(Some(button));
                }
            }
@@ -925,25 +822,7 @@ impl PadSettings {
            "playInBackground:{}\n",
            bool_text(self.play_in_background)
        ));
-        text.push_str(&format!(
-            "radialMode:{}\nradialStick:{}\n",
-            self.radial_mode.name(),
-            self.radial_stick.name()
-        ));
-        text.push_str(&format!("bindLayout:{}\n", self.bind_layout));
-        for (key, value) in &self.extra {
-            // A button this game didn't know, for an action the player has bound here since.
-            let rebound = key
-                .strip_prefix("bind_")
-                .is_some_and(|action| self.bindings.contains_key(action));
-            if !rebound {
-                text.push_str(&format!("{key}:{value}\n"));
-            }
-        }
-        // The default pages aren't written: they can improve for a player who never changed them.
-        if self.radial != crate::radial::Pages::default() {
-            text.push_str(&self.radial.serialize());
-        }
+        text.push_str("bindLayout:1\n");
        text
    }
    pub fn default_of(action: &str) -> Option<Button> {
@@ -956,15 +835,11 @@ impl PadSettings {
            None => Self::default_of(action),
        }
    }
-    /// Put `action` on `button`, or unbind it. An unknown action, or a button it can't take
-    /// (`can_bind`), changes nothing.
+    /// Bind an action (`None` unbinds); unknown actions are ignored.
    pub fn bind(&mut self, action: &str, button: Option<Button>) {
        let Some((name, default)) = ACTIONS.iter().find(|a| a.0 == action) else {
            return;
        };
-        if button.is_some_and(|b| !self.can_bind(action, b)) {
-            return;
-        }
        if button == *default {
            self.bindings.remove(name);
        } else {
@@ -1565,24 +1440,6 @@ pub enum Rumble {
        radius: f32,
    },
    Totem,
-    /// The radial menu's stick reached a slot that would run: a tick.
-    RadialSlot,
-    /// The radial menu's page turned: a shorter tick.
-    RadialPage,
-    /// The page turn went round an end: a second tick after the first.
-    RadialWrap,
-    /// A release ran nothing after something had been selected: a soft buzz.
-    RadialNothing,
-}
-impl From<crate::input_source::Feedback> for Rumble {
-    fn from(event: crate::input_source::Feedback) -> Self {
-        use crate::input_source::Feedback;
-        match event {
-            Feedback::BlockBroken => Rumble::BlockBroken,
-            Feedback::Explosion { distance, radius } => Rumble::Explosion { distance, radius },
-            Feedback::Totem => Rumble::Totem,
-        }
-    }
 }
 /// A vibration: the heavy (low-frequency) and light motors, 0..1, and how
 /// long it lasts.
@@ -1592,7 +1449,6 @@ pub struct Pulse {
    pub weak: f32,
    pub millis: u32,
 }
-use crate::radial::{RADIAL_NOTHING, RADIAL_PAGE_TICK, RADIAL_TICK};
 impl Rumble {
    pub fn name(self) -> &'static str {
        match self {
@@ -1600,10 +1456,6 @@ impl Rumble {
            Rumble::BlockBroken => "block",
            Rumble::Explosion { .. } => "explosion",
            Rumble::Totem => "totem",
-            Rumble::RadialSlot => "radial",
-            Rumble::RadialPage => "radial_page",
-            Rumble::RadialWrap => "radial_wrap",
-            Rumble::RadialNothing => "radial_nothing",
        }
    }
    /// The pulse, or `None` when it is too faint to feel.
@@ -1630,9 +1482,6 @@ impl Rumble {
                    millis: 350,
                })
            }
-            Rumble::RadialSlot => Some(RADIAL_TICK),
-            Rumble::RadialPage | Rumble::RadialWrap => Some(RADIAL_PAGE_TICK),
-            Rumble::RadialNothing => Some(RADIAL_NOTHING),
            Rumble::Totem => Some(Pulse {
                strong: 0.7,
                weak: 0.7,
@@ -1654,10 +1503,6 @@ impl Rumble {
        };
        match self {
            Rumble::BlockBroken => vec![Pulse { millis: 35, ..p }],
-            Rumble::RadialSlot
-            | Rumble::RadialPage
-            | Rumble::RadialWrap
-            | Rumble::RadialNothing => vec![p],
            Rumble::Hurt(_) => {
                let tail = p.millis.saturating_sub(50) / 2;
                vec![step(1.0, 50), step(0.55, tail), step(0.25, tail)]
@@ -1678,8 +1523,9 @@ impl Rumble {
    }
 }

-/// What a trigger feels like, from what its action is doing (docs/controllers.md "Adaptive
-/// triggers"); the controller code turns it into a DualSense trigger effect.
+/// What a trigger feels like on a DualSense, from what its action is doing (docs/controllers.md
+/// "Adaptive triggers" for the choices). Only the pad's official modes: Nielk1's notes warn the
+/// others may leave the firmware.
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum TriggerFeel {
    Free,
@@ -1698,6 +1544,66 @@ pub enum TriggerFeel {
    /// Mining a block of this hardness: a buzz, stronger and slower on harder blocks.
    Texture(f32),
 }
+#[cfg(feature = "controllers")]
+impl TriggerFeel {
+    /// The effect, for a trigger that presses its action at `threshold` (0..1) of its travel.
+    pub fn effect(self, threshold: f32) -> horizon_dualsense::TriggerEffect {
+        use horizon_dualsense::trigger;
+        // The zone (of ten along the travel) where the action presses: a catch gives way there,
+        // so the click and the shot coincide.
+        let press = ((threshold.clamp(0.0, 1.0) * 10.0) as u8).clamp(3, 8);
+        match self {
+            TriggerFeel::Free => horizon_dualsense::TRIGGER_OFF,
+            // From the third zone, so the press itself stays light; at most 6 of 8, as the
+            // draw is held.
+            TriggerFeel::Draw(charge) => {
+                trigger::feedback(2, 1 + (5.0 * charge.clamp(0.0, 1.0)).round() as u8)
+            }
+            TriggerFeel::Click => trigger::weapon((press - 2).max(2), press, 8),
+            TriggerFeel::Boost => trigger::weapon((press - 2).max(2), press, 5),
+            TriggerFeel::Brace => trigger::feedback(2, 3),
+            TriggerFeel::Locked => trigger::feedback(1, 8),
+            TriggerFeel::Texture(hardness) if hardness > 0.0 => {
+                // Dirt 2, stone 3, deepslate 4, obsidian 5 of 8.
+                let amplitude = (1.0 + 1.6 * hardness.sqrt()).round().clamp(1.0, 5.0);
+                // Sand and dirt a fine 40 Hz grit; stone 30; wood, deepslate and ores 20;
+                // obsidian a 10 Hz chisel.
+                let hertz = match hardness {
+                    h if h < 1.0 => 40,
+                    h if h < 2.0 => 30,
+                    h if h < 5.0 => 20,
+                    _ => 10,
+                };
+                trigger::vibration(1, amplitude as u8, hertz)
+            }
+            TriggerFeel::Texture(_) => horizon_dualsense::TRIGGER_OFF,
+        }
+    }
+}
+#[cfg(feature = "controllers")]
+impl PadSettings {
+    /// The left and right triggers' effects: each feels the action bound to it, `key.use` or
+    /// `key.attack`.
+    pub fn trigger_effects(
+        &self,
+        using: TriggerFeel,
+        attacking: TriggerFeel,
+    ) -> [horizon_dualsense::TriggerEffect; 2] {
+        [Button::LeftTrigger, Button::RightTrigger].map(|trigger| {
+            let actions = self.actions_of(trigger);
+            let feel = if !self.adaptive_triggers {
+                TriggerFeel::Free
+            } else if actions.contains(&"key.use") {
+                using
+            } else if actions.contains(&"key.attack") {
+                attacking
+            } else {
+                TriggerFeel::Free
+            };
+            feel.effect(self.trigger_threshold)
+        })
+    }
+}
 /// What a DualSense's lightbar shows (`lightbar:`).
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub enum Lightbar {
@@ -2018,55 +1924,7 @@ bind_key.hotbar.2:north
        let odd = PadSettings::parse(
            "lookSensitivity:NaN\nbind_key.nope:south\nbind_key.jump:x9\nbindLayout:1\n",
        );
-        assert_eq!(
-            odd.look_sensitivity,
-            PadSettings::default().look_sensitivity
-        );
-        assert_eq!(odd.binding("key.jump"), Some(Button::South));
-        assert_eq!(odd.actions_of(Button::South), ["key.jump"]);
-    }
-
-    #[test]
-    fn lines_this_game_doesnt_read_survive_a_save() {
-        // A newer Horizon's setting, an action this game doesn't have, a button it doesn't know.
-        let text =
-            "bindLayout:2\nhapticStrength:0.4\nbind_horizon:dash:south\nbind_key.jump:paddle1\n";
-        let s = PadSettings::parse(text);
-        assert_eq!(
-            s.binding("key.jump"),
-            Some(Button::South),
-            "the default meanwhile"
-        );
-        let saved = s.serialize();
-        for line in [
-            "hapticStrength:0.4\n",
-            "bind_horizon:dash:south\n",
-            "bind_key.jump:paddle1\n",
-        ] {
-            assert!(saved.contains(line), "{line} lost from\n{saved}");
-        }
-        assert_eq!(PadSettings::parse(&saved), s);
-        // Bound here since, the action's own line is the one written.
-        let mut s = s;
-        s.bind("key.jump", Some(Button::West));
-        let saved = s.serialize();
-        assert!(!saved.contains("paddle1"), "{saved}");
-        assert_eq!(
-            PadSettings::parse(&saved).binding("key.jump"),
-            Some(Button::West)
-        );
-    }
-
-    #[test]
-    fn a_newer_bind_layout_is_kept() {
-        let newer = BIND_LAYOUT + 1;
-        let s = PadSettings::parse(&format!("bindLayout:{newer}\nvibration:false\n"));
-        assert!(s.serialize().contains(&format!("bindLayout:{newer}\n")));
-        let s = PadSettings::parse("bindLayout:1\nvibration:false\n");
-        assert!(
-            s.serialize()
-                .contains(&format!("bindLayout:{BIND_LAYOUT}\n"))
-        );
+        assert_eq!(odd, PadSettings::default());
    }

    #[test]
@@ -2580,6 +2438,52 @@ bind_key.hotbar.2:north
        assert_eq!(w.observe(Some(1.0)), Some(1.0));
    }

+    #[cfg(feature = "controllers")]
+    #[test]
+    fn triggers_feel_their_action() {
+        use horizon_dualsense::{TRIGGER_OFF, trigger};
+        let mut s = PadSettings::default();
+        // Use is LT, attack RT by default.
+        let [left, right] = s.trigger_effects(TriggerFeel::Draw(1.0), TriggerFeel::Texture(1.5));
+        assert_eq!(left, trigger::feedback(2, 6));
+        assert_eq!(right, trigger::vibration(1, 3, 30));
+        assert_eq!(
+            s.trigger_effects(TriggerFeel::Draw(0.0), TriggerFeel::Free),
+            [trigger::feedback(2, 1), TRIGGER_OFF]
+        );
+        // The catch gives way in the zone where the default threshold (0.4) presses: weapon
+        // 0x25, zones 2 and 4, strength 8 (stored 7) or 5 (stored 4).
+        let catch = |strength| [0x25, 0x14, 0x00, strength, 0, 0, 0, 0, 0, 0, 0];
+        assert_eq!(TriggerFeel::Click.effect(0.4), catch(7));
+        assert_eq!(TriggerFeel::Boost.effect(0.4), catch(4));
+        // A deeper threshold moves it: zones 5 and 7.
+        assert_eq!(TriggerFeel::Click.effect(0.7)[1..3], [0xa0, 0x00]);
+        assert_eq!(TriggerFeel::Click.effect(0.1), trigger::weapon(2, 3, 8));
+        assert_eq!(TriggerFeel::Brace.effect(0.4), trigger::feedback(2, 3));
+        assert_eq!(TriggerFeel::Locked.effect(0.4), trigger::feedback(1, 8));
+        // Harder blocks buzz harder and slower; instant-break blocks don't.
+        assert_eq!(
+            TriggerFeel::Texture(0.5).effect(0.4),
+            trigger::vibration(1, 2, 40)
+        );
+        assert_eq!(
+            TriggerFeel::Texture(3.0).effect(0.4),
+            trigger::vibration(1, 4, 20)
+        );
+        assert_eq!(
+            TriggerFeel::Texture(50.0).effect(0.4),
+            trigger::vibration(1, 5, 10)
+        );
+        assert_eq!(TriggerFeel::Texture(0.0).effect(0.4), TRIGGER_OFF);
+        assert_eq!(TriggerFeel::Texture(-1.0).effect(0.4), TRIGGER_OFF);
+        s.adaptive_triggers = false;
+        assert_eq!(
+            s.trigger_effects(TriggerFeel::Click, TriggerFeel::Boost),
+            [TRIGGER_OFF; 2]
+        );
+        assert!(!PadSettings::parse(&s.serialize()).adaptive_triggers);
+    }
+
    #[test]
    fn lightbar_colours() {
        let full = Lightbar::Health.colour(1.0, "minecraft:overworld").unwrap();
@@ -1,354 +0,0 @@
-//! The radial menu's settings in the controller file (`horizon-controller.txt`): how its opener
-//! holds it open, the stick that selects, which buttons the opener may be with that stick, and the
-//! opener each stick had this session. `PadSettings::parse` and `serialize` read and write their
-//! lines (`radialMode`, `radialStick`, `bind_pad.radial`).
-use super::{Button, PadSettings, RADIAL};
-
-/// The buttons under the right thumb, which steers the right stick.
-const RIGHT_THUMB: [Button; 4] = [
-    Button::South,
-    Button::West,
-    Button::North,
-    Button::RightStick,
-];
-/// The buttons under the left thumb, which steers the left stick.
-const LEFT_THUMB: [Button; 5] = [
-    Button::DPadUp,
-    Button::DPadDown,
-    Button::DPadLeft,
-    Button::DPadRight,
-    Button::LeftStick,
-];
-
-/// Whether the radial menu's opener can't be `button` while `stick` selects. One rule: the opener
-/// is never under a thumb that selects (holding it and steering are two jobs for one thumb), nor
-/// B, which cancels the open menu. So with the right stick the face buttons and R3 go, with the
-/// left the D-pad and L3, with either both; a bumper, a trigger and View are always free, and
-/// with a bumper for the opener the other bumper turns the pages.
-pub fn opener_refused(stick: RadialStick, button: Button) -> bool {
-    button == Button::East
-        || (stick != RadialStick::Left && RIGHT_THUMB.contains(&button))
-        || (stick != RadialStick::Right && LEFT_THUMB.contains(&button))
-}
-
-/// How the radial menu's opener holds it open.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Default)]
-pub enum RadialMode {
-    /// Held: letting go runs what is selected.
-    #[default]
-    Hold,
-    /// A press opens it; A or the opener again runs what is selected, B closes it.
-    Toggle,
-}
-impl RadialMode {
-    pub const ALL: [Self; 2] = [Self::Hold, Self::Toggle];
-    pub fn name(self) -> &'static str {
-        match self {
-            Self::Hold => "hold",
-            Self::Toggle => "toggle",
-        }
-    }
-    pub fn parse(value: &str) -> Self {
-        Self::ALL
-            .into_iter()
-            .find(|mode| mode.name() == value)
-            .unwrap_or_default()
-    }
-}
-
-/// The stick that selects in the radial menu.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Default)]
-pub enum RadialStick {
-    #[default]
-    Right,
-    Left,
-    /// The last stick to lean past the select tilt.
-    Either,
-}
-impl RadialStick {
-    pub const ALL: [Self; 3] = [Self::Right, Self::Left, Self::Either];
-    pub fn name(self) -> &'static str {
-        match self {
-            Self::Right => "right",
-            Self::Left => "left",
-            Self::Either => "either",
-        }
-    }
-    pub fn parse(value: &str) -> Self {
-        Self::ALL
-            .into_iter()
-            .find(|stick| stick.name() == value)
-            .unwrap_or_default()
-    }
-}
-
-/// The opener each stick had, for this session: what the player stepped through, not a setting,
-/// so it is neither saved nor compared.
-#[derive(Clone, Copy, Debug, Default)]
-pub(super) struct StickOpeners([Option<Button>; 3]);
-impl PartialEq for StickOpeners {
-    fn eq(&self, _: &Self) -> bool {
-        true
-    }
-}
-impl StickOpeners {
-    fn slot(&mut self, stick: RadialStick) -> &mut Option<Button> {
-        let at = RadialStick::ALL
-            .iter()
-            .position(|s| *s == stick)
-            .unwrap_or(0);
-        &mut self.0[at]
-    }
-}
-
-impl PadSettings {
-    /// Whether `button` can be bound to `action`: anything but the radial menu's opener under
-    /// a thumb that selects, or on B (`opener_refused`).
-    pub fn can_bind(&self, action: &str, button: Button) -> bool {
-        action != RADIAL || !opener_refused(self.radial_stick, button)
-    }
-    /// The stick the radial menu selects with. An opener under the thumb that now selects is
-    /// unbound, and its row in the radial page says so. An unbound opener then takes the one this
-    /// stick had before in this session, or else its default where nothing else has it (D-pad
-    /// Right, back on the right stick).
-    pub fn set_radial_stick(&mut self, stick: RadialStick) {
-        let was = self.radial_stick;
-        *self.openers.slot(was) = self.binding(RADIAL);
-        self.radial_stick = stick;
-        if self
-            .binding(RADIAL)
-            .is_some_and(|b| opener_refused(stick, b))
-        {
-            self.bindings.insert(RADIAL, None);
-        }
-        if self.binding(RADIAL).is_some() {
-            return;
-        }
-        // The player's own, shared or not: they put it there.
-        if let Some(own) = self
-            .openers
-            .slot(stick)
-            .filter(|b| !opener_refused(stick, *b))
-        {
-            self.bind(RADIAL, Some(own));
-            return;
-        }
-        let default = Self::default_of(RADIAL);
-        let free =
-            default.is_some_and(|d| !opener_refused(stick, d) && self.actions_of(d).is_empty());
-        if free {
-            self.bindings.remove(RADIAL);
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::super::Rumble;
-    use super::*;
-
-    #[test]
-    fn a_new_player_holds_d_pad_right_for_the_radial_menu() {
-        for s in [PadSettings::default(), PadSettings::parse("")] {
-            assert_eq!(s.binding(RADIAL), Some(Button::DPadRight));
-            assert!(!s.conflicts(RADIAL));
-        }
-        let s = PadSettings::parse(&PadSettings::default().serialize());
-        assert_eq!(s, PadSettings::default());
-    }
-
-    #[test]
-    fn a_button_bound_by_hand_stays_with_it_over_the_openers_default() {
-        let s = PadSettings::parse("bindLayout:1\nbind_key.playerlist:right\n");
-        assert_eq!(s.binding("key.playerlist"), Some(Button::DPadRight));
-        assert_eq!(s.binding(RADIAL), None);
-        assert!(!s.conflicts("key.playerlist"));
-        assert_eq!(PadSettings::parse(&s.serialize()), s);
-    }
-
-    #[test]
-    fn a_saved_opener_stays_where_it_was_saved() {
-        let s =
-            PadSettings::parse("bindLayout:1\nbind_pad.radial:right\nbind_key.playerlist:right\n");
-        assert_eq!(s.binding(RADIAL), Some(Button::DPadRight));
-    }
-
-    #[test]
-    fn a_conflict_made_since_the_migration_stays_after_a_restart() {
-        // Bound in the binds list onto the opener's button: both stay, and the list marks it.
-        let mut s = PadSettings::default();
-        s.bind("key.playerlist", Some(Button::DPadRight));
-        let text = s.serialize();
-        assert!(text.contains("bindLayout:2"));
-        let read = PadSettings::parse(&text);
-        assert_eq!(read.binding(RADIAL), Some(Button::DPadRight));
-        assert!(read.conflicts(RADIAL));
-        assert_eq!(read, s);
-        // The same, hand-written with spaces around the lines.
-        let read = PadSettings::parse("  bindLayout:2\n  bind_key.playerlist:right\n");
-        assert_eq!(read.binding(RADIAL), Some(Button::DPadRight));
-    }
-
-    #[test]
-    fn a_layout_one_file_resolves_the_opener_once() {
-        let s = PadSettings::parse("bind_key.chat:up\n bindLayout:1\nbind_key.playerlist:right\n");
-        assert_eq!(s.binding(RADIAL), None, "the player's own button wins");
-        assert_eq!(s.binding("key.playerlist"), Some(Button::DPadRight));
-        assert_eq!(s.binding("key.chat"), Some(Button::DPadUp));
-        let text = s.serialize();
-        assert!(text.contains("bindLayout:2\n") && text.contains("bind_pad.radial:none\n"));
-        assert_eq!(PadSettings::parse(&text), s);
-        // Without a conflict the opener keeps its default.
-        let s = PadSettings::parse("bindLayout:1\nvibration:false\n");
-        assert_eq!(s.binding(RADIAL), Some(Button::DPadRight));
-        // A line with leading spaces is still a saved opener.
-        let s =
-            PadSettings::parse("bindLayout:1\n bind_pad.radial:right\nbind_key.playerlist:right\n");
-        assert_eq!(s.binding(RADIAL), Some(Button::DPadRight));
-    }
-
-    #[test]
-    fn the_opener_never_goes_under_the_selecting_thumb_nor_on_b() {
-        use Button as B;
-        let face = [B::South, B::West, B::North, B::RightStick];
-        let dpad = [
-            B::DPadUp,
-            B::DPadDown,
-            B::DPadLeft,
-            B::DPadRight,
-            B::LeftStick,
-        ];
-        for stick in RadialStick::ALL {
-            let mut s = PadSettings::default();
-            s.set_radial_stick(stick);
-            for button in Button::ALL {
-                let refused = button == B::East
-                    || (stick != RadialStick::Left && face.contains(&button))
-                    || (stick != RadialStick::Right && dpad.contains(&button));
-                assert_eq!(!s.can_bind(RADIAL, button), refused, "{stick:?} {button:?}");
-                // Other actions still take any of them.
-                assert!(s.can_bind("key.chat", button));
-            }
-            // A bumper is always free, and stays one through the file.
-            s.bind(RADIAL, Some(B::LeftBumper));
-            assert_eq!(s.binding(RADIAL), Some(B::LeftBumper), "{stick:?}");
-            assert_eq!(PadSettings::parse(&s.serialize()), s, "{stick:?}");
-        }
-        // A file with a refused opener reads as never saved: the default, unless taken.
-        for button in [B::South, B::East, B::West, B::North, B::RightStick] {
-            let text = format!("bindLayout:2\nbind_pad.radial:{}\n", button.name());
-            let read = PadSettings::parse(&text);
-            assert_eq!(read.binding(RADIAL), Some(B::DPadRight), "{button:?}");
-            let taken = format!("{text}bind_key.playerlist:right\n");
-            assert_eq!(
-                PadSettings::parse(&taken).binding(RADIAL),
-                None,
-                "{button:?}"
-            );
-        }
-        // Read with the stick it was saved for, wherever the stick's line is.
-        let left = PadSettings::parse("bind_pad.radial:north\nbindLayout:2\nradialStick:left\n");
-        assert_eq!(left.binding(RADIAL), Some(B::North));
-    }
-
-    #[test]
-    fn a_stick_that_takes_the_openers_thumb_unbinds_it_and_the_right_gives_it_back() {
-        let mut s = PadSettings::default();
-        s.set_radial_stick(RadialStick::Left);
-        assert_eq!(
-            s.binding(RADIAL),
-            None,
-            "D-pad Right is under the left thumb"
-        );
-        assert_eq!(PadSettings::parse(&s.serialize()).binding(RADIAL), None);
-        s.set_radial_stick(RadialStick::Right);
-        assert_eq!(s.binding(RADIAL), Some(Button::DPadRight));
-        // An opener the player picked that both sticks allow stays.
-        s.bind(RADIAL, Some(Button::RightBumper));
-        s.set_radial_stick(RadialStick::Either);
-        assert_eq!(s.binding(RADIAL), Some(Button::RightBumper));
-    }
-
-    #[test]
-    fn stepping_the_stick_and_back_gives_each_stick_its_own_opener() {
-        // Left with Y, back to the right stick: Y is under the right thumb, D-pad Right opens.
-        let mut s = PadSettings::default();
-        s.set_radial_stick(RadialStick::Left);
-        s.bind(RADIAL, Some(Button::North));
-        s.set_radial_stick(RadialStick::Right);
-        assert_eq!(s.binding(RADIAL), Some(Button::DPadRight));
-        // And Left again has its Y back, shared with Inventory as the player left it.
-        s.set_radial_stick(RadialStick::Left);
-        assert_eq!(s.binding(RADIAL), Some(Button::North));
-        // Right with D-pad Left: the left stick refuses it, and the right gets it back.
-        let mut s = PadSettings::default();
-        s.bind(RADIAL, Some(Button::DPadLeft));
-        s.set_radial_stick(RadialStick::Left);
-        assert_eq!(s.binding(RADIAL), None);
-        s.set_radial_stick(RadialStick::Either);
-        assert_eq!(s.binding(RADIAL), None);
-        s.set_radial_stick(RadialStick::Right);
-        assert_eq!(s.binding(RADIAL), Some(Button::DPadLeft));
-    }
-
-    #[test]
-    fn a_file_from_before_the_radial_menu_binds_no_opener() {
-        let s = PadSettings::parse("vibration:false\nbind_key.chat:up\n");
-        assert_eq!(s.binding(RADIAL), None);
-        assert_eq!(PadSettings::parse(&s.serialize()), s);
-    }
-
-    #[test]
-    fn the_radial_menus_ticks_are_felt_and_tell_apart() {
-        let tick = Rumble::RadialSlot.pulse().unwrap();
-        assert!((40..=50).contains(&tick.millis), "{tick:?}");
-        assert!((0.25..=0.35).contains(&tick.weak), "{tick:?}");
-        let page = Rumble::RadialPage.pulse().unwrap();
-        assert!(page.millis < tick.millis, "a page turn is the shorter tick");
-        assert_eq!(Rumble::RadialWrap.pulse(), Some(page));
-        let nothing = Rumble::RadialNothing.pulse().unwrap();
-        assert!(
-            nothing.strong > 0.0 && nothing.millis > tick.millis,
-            "{nothing:?}"
-        );
-        assert!(
-            nothing.strong.max(nothing.weak) < 0.3,
-            "a soft buzz: {nothing:?}"
-        );
-    }
-
-    #[test]
-    fn the_radial_menus_mode_and_stick_survive_the_settings_file() {
-        let s = PadSettings::default();
-        assert_eq!(
-            (s.radial_mode, s.radial_stick),
-            (RadialMode::Hold, RadialStick::Right)
-        );
-        for mode in RadialMode::ALL {
-            for stick in RadialStick::ALL {
-                let mut s = PadSettings {
-                    radial_mode: mode,
-                    ..PadSettings::default()
-                };
-                s.set_radial_stick(stick);
-                assert_eq!(PadSettings::parse(&s.serialize()), s);
-            }
-        }
-        let read = PadSettings::parse("radialMode:sideways\nradialStick:up\n");
-        assert_eq!(
-            (read.radial_mode, read.radial_stick),
-            (RadialMode::Hold, RadialStick::Right)
-        );
-    }
-
-    #[test]
-    fn radial_pages_survive_the_settings_file() {
-        let mut s = PadSettings::default();
-        let pages = "radial_0_label:Mine\nradial_0_slots:key.chat,,,,,,,\n";
-        s.radial =
-            crate::radial::Pages::parse(pages.lines().filter_map(|l| l.split_once(':'))).unwrap();
-        let read = PadSettings::parse(&s.serialize());
-        assert_eq!(read.radial, s.radial);
-        assert_ne!(read.radial, crate::radial::Pages::default());
-    }
-}
@@ -141,13 +141,8 @@ impl Guide {
    pub fn at_detail(self, detail: GuideDetail) -> Self {
        match detail {
            GuideDetail::Full => self,
-            // Nothing else in play names the radial menu.
            GuideDetail::Basic => Guide {
-                left: self
-                    .left
-                    .into_iter()
-                    .filter(|row| row.caption == crate::gamepad::RADIAL_CAPTION)
-                    .collect(),
+                left: Vec::new(),
                right: self.right,
            },
            GuideDetail::Off => Guide {
@@ -183,8 +178,6 @@ pub fn resolve(facts: &Facts, settings: &PadSettings) -> Guide {
                "key.swapOffhand",
                (player && any_item).then_some("horizon.controller.guide.swap"),
            ),
-            // Nothing else in play says the menu is there; it opens for a spectator too.
-            row(crate::gamepad::RADIAL, Some(crate::gamepad::RADIAL_CAPTION)),
        ]
        .into_iter()
        .flatten()
@@ -573,7 +566,6 @@ mod tests {
                (Button::North, "key.inventory"),
                (Button::DPadDown, "horizon.controller.guide.drop"),
                (Button::West, "horizon.controller.guide.swap"),
-                (Button::DPadRight, crate::gamepad::RADIAL_CAPTION),
            ]
        );
    }
@@ -744,12 +736,12 @@ mod tests {
                gliding: true,
                ..Facts::default()
            }),
-            ["key.inventory", crate::gamepad::RADIAL_CAPTION]
+            ["key.inventory"]
        );
    }

    #[test]
-    fn a_spectator_only_flies_opens_spectates_and_has_its_menus() {
+    fn a_spectator_only_flies_opens_spectates_and_has_its_menu() {
        let facts = Facts {
            spectator: true,
            flying: true,
@@ -773,8 +765,7 @@ mod tests {
            captions(&guide.left),
            [
                "horizon.controller.guide.fly_up",
-                "horizon.controller.guide.fly_down",
-                crate::gamepad::RADIAL_CAPTION
+                "horizon.controller.guide.fly_down"
            ]
        );
    }
@@ -1,15 +0,0 @@
-//! The engine's side of the input source (docs/layers.md, "Controllers, splitscreen, replays and
-//! UI pages"): what gameplay tells a device beyond the keyboard and mouse. Gameplay names these
-//! types, never a controller's; the controller code answers.
-
-/// Something that happened to the player that a device may let them feel (a controller's
-/// vibration). The device decides how, or whether.
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub enum Feedback {
-    /// The player broke a block.
-    BlockBroken,
-    /// An explosion this far away (blocks) with this power.
-    Explosion { distance: f64, radius: f32 },
-    /// A totem of undying saved the player.
-    Totem,
-}
@@ -356,12 +356,6 @@ impl KeyBinds {
    pub fn is_default(&self, name: &str) -> bool {
        self.get(name) == Self::default_of(name)
    }
-    /// `KeyBindsScreen.extractRenderState`: Reset All is active only while a
-    /// mapping differs from its default (`KeyMapping.isDefault`, the bound key
-    /// against `defaultKey`).
-    pub fn changed_from_defaults(&self) -> bool {
-        self.keys.keys().any(|name| !self.is_default(name))
-    }
    pub fn set(&mut self, name: &str, key: &str) {
        if let Some((n, _, _)) = all_mappings().find(|m| m.0 == name) {
            self.keys.insert(n, key.to_owned());
@@ -651,22 +645,6 @@ mod tests {
        assert_eq!(k.translate_all(KeyCode::Digit9), [Ok(KeyCode::Digit9)]);
        assert_eq!(k.translate_all(KeyCode::F3), [Ok(KeyCode::F3)]);
    }
-
-    /// `KeyBindsScreen.extractRenderState`: Reset All is active only while a
-    /// binding differs from its default.
-    #[test]
-    fn reset_all_is_active_only_after_a_binding_moves() {
-        let mut keys = KeyBinds::default();
-        assert!(!keys.changed_from_defaults());
-        keys.set("key.attack", "key.mouse.right");
-        assert!(keys.changed_from_defaults());
-        // Setting a mapping back to its own default leaves nothing to reset.
-        keys.set("key.attack", KeyBinds::default_of("key.attack"));
-        assert!(!keys.changed_from_defaults());
-        keys.set("key.jump", "key.keyboard.z");
-        keys.reset_all();
-        assert!(!keys.changed_from_defaults());
-    }
    #[test]
    fn display_names() {
        assert_eq!(display_name("key.keyboard.w").plain(), "W");
@@ -9,13 +9,11 @@ pub mod gamepad;
 pub mod gameplay_guide;
 pub mod held;
 pub mod input;
-pub mod input_source;
 pub mod interaction_input;
 pub mod key_names;
 pub mod keybinds;
 pub mod keymapping;
 pub mod modifiers;
 pub mod mouse;
-pub mod radial;
 pub mod snap;
 pub mod window;
@@ -638,30 +638,10 @@ pub fn fullscreen_request(
    }
 }

-/// The PNG the windows show as their icon, given once at startup by the layer that brands the
-/// game (the engine has none of its own).
-static ICON_PNG: std::sync::OnceLock<&'static [u8]> = std::sync::OnceLock::new();
-
-/// Give the windows their icon, a PNG: call it before the first window opens. A second call
-/// keeps the first icon.
-pub fn set_icon_png(png: &'static [u8]) {
-    let _ = ICON_PNG.set(png);
-}
-
-/// The icon given to [`set_icon_png`], if any.
-pub fn icon_png() -> Option<&'static [u8]> {
-    ICON_PNG.get().copied()
-}
-
-/// The icon for the window's title bar and the task bar (X11 and Windows; Wayland takes it from
-/// the `.desktop` entry, macOS from the app bundle). `None` with no icon given, or one that
-/// can't be read.
+/// Horizon's icon for the window's title bar and the task bar (X11 and Windows; Wayland takes
+/// it from the `horizon.desktop` entry, macOS from the app bundle). `None` if it can't be read.
 pub fn icon() -> Option<winit::window::Icon> {
-    decode_icon(icon_png()?)
-}
-
-fn decode_icon(png: &[u8]) -> Option<winit::window::Icon> {
-    let mut decoder = png::Decoder::new(std::io::Cursor::new(png));
+    let mut decoder = png::Decoder::new(std::io::Cursor::new(horizon_theme::ICON_PNG));
    decoder.ignore_checksums(true);
    decoder.set_transformations(png::Transformations::EXPAND | png::Transformations::STRIP_16);
    let mut reader = decoder.read_info().ok()?;
@@ -674,15 +654,14 @@ fn decode_icon(png: &[u8]) -> Option<winit::window::Icon> {
    winit::window::Icon::from_rgba(bytes, info.width, info.height).ok()
 }

-/// Apply the icon given to [`set_icon_png`] to a window. Windows has a separate taskbar icon slot
-/// from the small window icon; requiring a given icon to decode there prevents a generic taskbar
-/// icon from appearing.
-pub fn with_icon(attributes: winit::window::WindowAttributes) -> winit::window::WindowAttributes {
-    #[cfg(not(target_os = "windows"))]
+/// Apply Horizon's icon to every window. Windows has a separate taskbar icon slot from the small
+/// window icon; requiring the decoded icon there prevents a generic taskbar icon from appearing.
+pub fn with_horizon_icon(
+    attributes: winit::window::WindowAttributes,
+) -> winit::window::WindowAttributes {
    let icon = icon();
    #[cfg(target_os = "windows")]
-    let icon =
-        icon_png().map(|png| decode_icon(png).expect("the window icon must decode on Windows"));
+    let icon = Some(icon.expect("Horizon's icon must be available on Windows"));

    let attributes = attributes.with_window_icon(icon.clone());
    #[cfg(target_os = "windows")]
@@ -691,39 +670,6 @@ pub fn with_icon(attributes: winit::window::WindowAttributes) -> winit::window::
    attributes
 }

-/// The screen a window is on: its size in physical pixels, its refresh rate where the OS gives
-/// it, and its scale. For `horizon-ctl status` and the performance statistics' `system.display`.
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub struct Display {
-    pub width: u32,
-    pub height: u32,
-    pub refresh_hz: Option<u32>,
-    pub scale: f64,
-}
-
-/// The screen `window` is on, else the primary one, else the only one: right after the window
-/// is made, Wayland doesn't say yet which screen it is on.
-pub fn monitor(window: &winit::window::Window) -> Option<winit::monitor::MonitorHandle> {
-    let only = || {
-        let mut all = window.available_monitors();
-        all.next().filter(|_| all.next().is_none())
-    };
-    window
-        .current_monitor()
-        .or_else(|| window.primary_monitor())
-        .or_else(only)
-}
-
-/// [`monitor`]'s size, refresh rate and scale.
-pub fn display(window: &winit::window::Window) -> Option<Display> {
-    monitor(window).map(|m| Display {
-        width: m.size().width,
-        height: m.size().height,
-        refresh_hz: m.refresh_rate_millihertz().map(|r| r.div_ceil(1000)),
-        scale: m.scale_factor(),
-    })
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -760,8 +706,7 @@ mod tests {
    }
    #[test]
    fn the_window_icon_decodes() {
-        assert!(decode_icon(horizon_theme::ICON_PNG).is_some());
-        assert!(decode_icon(b"not a png").is_none());
+        assert!(icon().is_some());
    }

    #[test]
@@ -18,18 +18,15 @@ horizon-client-core = { path = "../horizon-client-core" }
 horizon-client-input = { path = "../horizon-client-input" }
 horizon-client-render = { path = "../horizon-client-render" }
 horizon-command = { path = "../horizon-command" }
+# Emotes pose the player model (`Mob::emote`, `mobs::anim::setup`).
+horizon-cosmetics = { path = "../horizon-cosmetics" }
 horizon-items = { path = "../horizon-items" }
 horizon-core = { path = "../horizon-core" }
-# Extension points for the crates above the engine (docs/layers.md, "How a Horizon crate plugs in").
-horizon-hooks = { path = "../horizon-hooks" }
 # `horizon-ctl mcp`: the Model Context Protocol, shared with the launcher and the server.
 horizon-mcp = { path = "../horizon-mcp" }
 # The server thread ahead of the workers (MinecraftServer.spin's Thread.setPriority).
 horizon-optifine = { path = "../horizon-optifine" }
 horizon-threads = { path = "../horizon-threads" }
-# One pool of helper threads for the server tick's parallel phases (`parallel.rs`): threads made
-# once, not for every phase of every tick.
-rayon = "1.10"
 horizon-hdr = { path = "../horizon-hdr" }
 horizon-world = { path = "../horizon-world" }
 horizon-protocol = { path = "../horizon-protocol" }
@@ -39,10 +36,14 @@ horizon-server-files = { path = "../horizon-server-files" }
 getrandom = "0.3"
 # The dedicated server's anticheat, off unless server.toml's [anticheat] turns it on (docs/anticheat.md).
 horizon-anticheat = { path = "../horizon-anticheat" }
+# The dedicated server's chat filter: [chat_filter], the slur list, mutes (docs/chat-filter.md).
+horizon-chat-filter = { path = "../horizon-chat-filter" }
 # Shader packs: reading them and turning their GLSL into naga modules.
 horizon-shaders = { path = "../horizon-shaders" }
 # Horizon's own shader packs: the format, the stages and the check (docs/shaders.md).
 horizon-shader-api = { path = "../horizon-shader-api" }
+# Play with Friends: invite codes and their tunnel; the `friends` feature.
+horizon-friends = { path = "../horizon-friends", optional = true }
 # The narrator (GameNarrator): text-to-speech of chat, system messages and screens.
 horizon-narrator = { path = "../horizon-narrator" }
 # Horizon mods: sandboxed WebAssembly components, off unless installed and turned on (docs/mods.md).
@@ -71,13 +72,17 @@ flate2 = { version = "1.1.10", default-features = false, features = ["zlib-rs",
 mio = { version = "1.2.4", features = ["os-poll", "net"] }
 # Shared chunk frames are found by one keyed 128-bit hash of their body (lan/conn.rs SharedFrames).
 xxhash-rust = { version = "0.8.19", features = ["xxh3"] }
-# Opt-in data collection: the game keeps, the launcher sends (docs/telemetry.md).
+horizon-theme = { path = "../horizon-theme" }
+# Opt-in data collection: the game keeps, the launcher sends (docs/telemetry.md); `live` is
+# the anonymous "I'm playing" ping the game sends itself (`heartbeat.rs`), the `heartbeat` feature.
 horizon-telemetry = { path = "../horizon-telemetry", default-features = false }
 horizon-bench = { path = "../horizon-bench" }
 crc32fast = "1"
 zip = { version = "9.1.3", default-features = false, features = ["deflate"] }
 # Controllers (evdev + libudev on Linux, IOKit on macOS, Windows.Gaming.Input); the `controllers` feature.
 gilrs = { version = "0.11", optional = true }
+# The DualSense's rumble, adaptive triggers and lights over HID (gilrs only reads it).
+horizon-dualsense = { path = "../horizon-dualsense", optional = true }
 # HTTPS to the Minecraft services (online-mode session join).
 ureq = { version = "2", default-features = false, features = ["tls"] }
 unicode-bidi = "0.3.18"
@@ -109,12 +114,18 @@ objc2-foundation = { version = "0.3", default-features = false, features = ["std
 wgpu = { version = "30.0.1", default-features = false, features = ["gles"] }

 [features]
-default = ["audio", "controllers"]
+default = ["audio", "controllers", "discord", "friends", "heartbeat"]
 # Sound output. Without it (and `controllers`) the program links neither libasound nor libudev on
 # Linux: the server build (`--no-default-features`, released as horizon-engine; docs/server.md).
 audio = ["horizon-client-render/audio"]
 # Controllers: gilrs, and the DualSense's own output. Without it only `horizon-ctl pad`'s virtual pad.
-controllers = ["dep:gilrs", "horizon-client-input/controllers"]
+controllers = ["dep:gilrs", "dep:horizon-dualsense", "horizon-client-input/controllers"]
+# "Playing Horizon" on the player's Discord profile (`discord_presence`).
+discord = []
+# Play with Friends, joining side (`net.rs`): without it no invite code joins.
+friends = ["dep:horizon-friends"]
+# The anonymous "I'm playing" ping (`heartbeat.rs`, docs/telemetry.md).
+heartbeat = ["horizon-telemetry/live"]
 # Records the call sites of mob random draws (`mob_ai_probe` traces).
 rng-trace = ["horizon-core/rng-trace"]
 # Compatibility with earlier experiment commands: main already uses mimalloc.
@@ -126,8 +137,6 @@ windows-segment-heap = []
 workspace = true

 [dev-dependencies]
-# ui_theme's unit tests draw text in the design system's fonts.
-horizon-theme = { path = "../horizon-theme" }
 horizon-client-render = { path = "../horizon-client-render", features = ["test-support"] }
 horizon-items = { path = "../horizon-items", features = ["test-support"] }
 # Every WGSL shader translated as wgpu's DirectX 12 backend does (gfx.rs tests).
@@ -7,8 +7,7 @@ rust-version.workspace = true
 description = "The client's world data, rendering and screens: chunks, meshing, light, streaming, the renderer, the HUD, menus and settings; no gameplay"

 [dependencies]
-# The settings stores of the crates above the engine (docs/layers.md, "Platform registries").
-horizon-hooks = { path = "../horizon-hooks" }
+horizon-cosmetics = { path = "../horizon-cosmetics" }
 # The GUI atlas's pixels, kept compressed once uploaded (hud.rs `pack_pixels`).
 lz4_flex = { version = "0.14", default-features = false, features = ["std", "safe-encode", "safe-decode", "checked-decode"] }
 horizon-assets = { path = "../horizon-assets" }
@@ -25,9 +24,11 @@ horizon-narrator = { path = "../horizon-narrator" }
 horizon-optifine = { path = "../horizon-optifine" }
 horizon-polytone = { path = "../horizon-polytone" }
 horizon-protocol = { path = "../horizon-protocol" }
+horizon-render-pipeline = { path = "../horizon-render-pipeline" }
 horizon-shader-api = { path = "../horizon-shader-api" }
 horizon-shaders = { path = "../horizon-shaders" }
 horizon-system = { path = "../horizon-system" }
+horizon-theme = { path = "../horizon-theme" }
 horizon-threads = { path = "../horizon-threads" }
 horizon-world = { path = "../horizon-world" }
 ab_glyph = "0.2.32"
@@ -74,16 +75,13 @@ wgpu = { version = "30.0.1", default-features = false, features = ["gles"] }
 audio = ["dep:cpal"]
 # Helpers horizon-client's tests build their fixtures with.
 test-support = []
-# horizon-client's `horizon-extras`: asking the device for hardware ray tracing on request
-# (`gfx/ray_query.rs`, `HORIZON_RAY_TRACING=1`). Without it the device is requested as without
-# the variable.
-horizon-extras = []
+
+[build-dependencies]
+horizon-mod-api-gen = { path = "../horizon-mod-api-gen" }

 [lints]
 workspace = true

 [dev-dependencies]
-# Tests: a TrueType font to load, and the design system the menus' motion curves match.
-horizon-theme = { path = "../horizon-theme" }
 horizon-items = { path = "../horizon-items", features = ["test-support"] }
 naga = { version = "30.0.1", features = ["wgsl-in", "hlsl-out", "glsl-out", "msl-out", "spv-out"] }
@@ -0,0 +1,7 @@
+fn main() {
+    let root =
+        std::path::PathBuf::from(std::env::var_os("CARGO_MANIFEST_DIR").unwrap()).join("../..");
+    let out_dir = std::path::PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
+    horizon_mod_api_gen::generate(&root, &out_dir, horizon_mod_api_gen::Target::Render)
+        .expect("generating native render mod API");
+}
@@ -1,158 +0,0 @@
-//! Audio occlusion, attenuation and mixing benchmark.
-//! Run with: `cargo run --profile fast -p horizon-client-render --example audio_bench`
-use horizon_client_render::{
-    audio::Audio,
-    sound_engine::{MobSound, SoundInstance, Sounds, TickContext},
-};
-use std::{path::Path, time::Instant};
-
-fn main() {
-    println!("=== Horizon Audio Attenuation & Mixing Benchmark ===");
-
-    let mut audio = Audio::silent(Path::new("/nonexistent"));
-    audio.engine.loaded = true;
-    audio.backend_live_for_bench();
-    audio.record_heard = false;
-
-    // Register a sound event with attenuation distance 16
-    audio.engine.registry.add_file(
-        "minecraft",
-        br#"{"bench.loop":{"attenuation_distance":16,"sounds":[{"name":"bench/loop","stream":false}]}}"#,
-        &|_, _| true,
-    );
-    // Insert 1 second of audio into cache (48000 mono samples)
-    let samples: Vec<f32> = (0..48_000)
-        .map(|i| ((i as f32) * 440.0 * 2.0 * std::f32::consts::PI / 48000.0).sin() * 0.5)
-        .collect();
-    audio.insert_cached_sound("minecraft:bench/loop", samples, 48_000, 1);
-
-    // 1. Benchmark set_listener (called every client render frame)
-    let listener_iterations = 200_000;
-    let start = Instant::now();
-    for i in 0..listener_iterations {
-        let angle = (i as f32) * 0.01;
-        audio.set_listener(
-            [
-                100.0 + (angle.cos() as f64) * 5.0,
-                64.0,
-                200.0 + (angle.sin() as f64) * 5.0,
-            ],
-            angle,
-            0.0,
-        );
-    }
-    let listener_elapsed = start.elapsed();
-    println!(
-        "1. set_listener moving (render frame): {:?} for {} calls ({:.2} ns/call)",
-        listener_elapsed,
-        listener_iterations,
-        (listener_elapsed.as_nanos() as f64) / (listener_iterations as f64)
-    );
-
-    // 1b. Benchmark set_listener stationary (lock elimination early-out)
-    let stationary_iterations = 200_000;
-    let start = Instant::now();
-    for _ in 0..stationary_iterations {
-        audio.set_listener([100.0, 64.0, 200.0], 0.0, 0.0);
-    }
-    let stationary_elapsed = start.elapsed();
-    println!(
-        "1b. set_listener stationary (lock early-out): {:?} for {} calls ({:.2} ns/call)",
-        stationary_elapsed,
-        stationary_iterations,
-        (stationary_elapsed.as_nanos() as f64) / (stationary_iterations as f64)
-    );
-
-    // 2. Play 128 sounds in the world at various distances from listener at [100.0, 64.0, 200.0]
-    // 64 sounds within attenuation distance (<16 blocks)
-    // 64 sounds outside attenuation distance (>16 blocks)
-    for i in 0..128 {
-        let dist = if i < 64 {
-            (i as f64) * 0.24 // 0 to 15.1 blocks (audible)
-        } else {
-            17.0 + ((i - 64) as f64) * 1.5 // 17 to 111.5 blocks (out of attenuation range)
-        };
-        let pos = [100.0 + dist, 64.0, 200.0];
-        let instance = SoundInstance::new(
-            "minecraft:bench.loop",
-            crate_sound_source(i),
-            1.0,
-            1.0,
-            horizon_core::random::LegacyRandom::new(i as i64),
-            true, // looping
-            0,
-            horizon_client_render::sound_engine::Attenuation::Linear,
-            pos,
-            false,
-        );
-        audio.play_instance(instance, false);
-    }
-
-    // 3. Benchmark mix_buffer (5000 buffers of 1024 stereo frames @ 48kHz = ~106 seconds of audio mixing)
-    let mut buffer = vec![0.0f32; 1024 * 2];
-    let mix_iterations = 5_000;
-    let start = Instant::now();
-    for _ in 0..mix_iterations {
-        audio.mix_buffer(&mut buffer, 2, 48_000);
-    }
-    let mix_elapsed = start.elapsed();
-    println!(
-        "2. mix_buffer (128 active channels, 1024 stereo frames): {:?} for {} buffers ({:.2} µs/buffer)",
-        mix_elapsed,
-        mix_iterations,
-        (mix_elapsed.as_micros() as f64) / (mix_iterations as f64)
-    );
-
-    // 4. Benchmark SoundEngine::tick with ticking mob sounds
-    let mut mobs = Vec::new();
-    for i in 0..64 {
-        mobs.push(MobSound {
-            id: 2000 + i,
-            position: [100.0 + (i as f64) * 0.5, 64.0, 200.0 + (i as f64) * 0.5],
-            speed: 0.25,
-            baby: false,
-            angry: i % 2 == 0,
-            silent: false,
-            attack_scale: 0.5,
-            sniffer_digging: false,
-        });
-    }
-
-    let tick_ctx = TickContext {
-        player_underwater: false,
-        player_removed: false,
-        vehicle: None,
-        carts: Vec::new(),
-        mobs: mobs.clone(),
-        frozen: false,
-        player_position: [100.0, 64.0, 200.0],
-        player_speed_sqr: 0.1,
-        player_fall_flying: false,
-        ridden: None,
-        camera_position: [100.0, 64.0, 200.0],
-    };
-
-    let tick_iterations = 10_000;
-    let start = Instant::now();
-    for _ in 0..tick_iterations {
-        audio.tick(false, &tick_ctx);
-    }
-    let tick_elapsed = start.elapsed();
-    println!(
-        "3. SoundEngine::tick (64 channels + ticking): {:?} for {} ticks ({:.2} µs/tick)",
-        tick_elapsed,
-        tick_iterations,
-        (tick_elapsed.as_micros() as f64) / (tick_iterations as f64)
-    );
-}
-
-fn crate_sound_source(i: u32) -> usize {
-    match i % 6 {
-        0 => 0, // master
-        1 => 1, // music
-        2 => 2, // records
-        3 => 3, // weather
-        4 => 4, // blocks
-        _ => 5, // hostile
-    }
-}
@@ -386,7 +386,6 @@ fn replay(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
                path: path.clone(),
                size: None,
                scaled: false,
-                background: false,
            });
            for _ in 0..32 {
                draw(&mut renderer)?;
@@ -207,7 +207,6 @@ fn fixture(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
        path: out.join("cpu.png"),
        size: None,
        scaled: false,
-        background: false,
    });
    renderer.render(&frame)?;
    let expected = read(&out.join("cpu.png"));
@@ -252,7 +251,6 @@ fn fixture(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
        path: out.join("gpu.png"),
        size: None,
        scaled: false,
-        background: false,
    });
    renderer.render(&frame)?;
    assert_eq!(
@@ -167,7 +167,6 @@ fn fixture(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
            path: path.clone(),
            size: None,
            scaled: false,
-            background: false,
        });
        // twice: the first frame of a new warp builds it
        renderer.render(&frame).unwrap();
@@ -337,7 +336,6 @@ fn bench(renderer: &mut Renderer, out: &Path) -> Result<(), Box<dyn std::error::
            path: out.join("bench.png"),
            size: None,
            scaled: false,
-            background: false,
        });
        renderer.render(&frame).unwrap();
        renderer.render(&frame).unwrap();
@@ -6,12 +6,7 @@ use horizon_world::{
    worldgen::{tags::TagDefinitions, terrain::TerrainBlockStates},
 };
 use serde_json::Value;
-use std::{
-    collections::BTreeSet,
-    io,
-    path::Path,
-    sync::{Arc, Mutex},
-};
+use std::{collections::BTreeSet, io, path::Path, sync::Arc};

 pub const MATERIALS: [&str; 6] = ["bedrock", "dirt", "stone", "sand", "oak_planks", "bricks"];
 #[derive(Clone, Copy)]
@@ -187,23 +182,6 @@ static GENERATION: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::
 fn invalid(message: &str) -> io::Error {
    io::Error::new(io::ErrorKind::InvalidData, message)
 }
-/// Every block registry [`Assets::load`] has handed out, one per distinct
-/// content. Callers keep `&'static` references, so a registry is never freed;
-/// loading equal data again (tests load the same root once per fixture)
-/// returns the one already leaked instead of leaking another (about 11 MB for
-/// vanilla).
-static REGISTRIES: Mutex<Vec<&'static BlockRegistry>> = Mutex::new(Vec::new());
-
-/// `registry` leaked, or the equal one leaked before it.
-fn intern_registry(registry: BlockRegistry) -> &'static BlockRegistry {
-    let mut leaked = REGISTRIES.lock().unwrap_or_else(|e| e.into_inner());
-    if let Some(&same) = leaked.iter().find(|&&known| *known == registry) {
-        return same;
-    }
-    let registry: &'static BlockRegistry = Box::leak(Box::new(registry));
-    leaked.push(registry);
-    registry
-}
 impl Assets {
    pub fn load(root: &Path) -> Result<Self> {
        let manifest: Value = horizon_world::json_file::read(&root.join("horizon-resources.json"))?;
@@ -278,7 +256,7 @@ impl Assets {
        // Chunks hold every state of this registry: content mods can take it
        // past vanilla's 16-bit global palette.
        crate::chunk::set_block_states(registry.len());
-        let registry = intern_registry(registry);
+        let registry: &'static BlockRegistry = Box::leak(Box::new(registry));
        Ok(Self {
            registry,
            properties,
@@ -342,16 +320,6 @@ impl RenderAssets {
            }
            None => crate::model_library::ParsedModels::default(),
        };
-        // Connected-texture rules find their faces by sprite layer: what they match by name keeps a
-        // layer of its own, decided before the models insert their textures.
-        let ctm_rules = if draws {
-            horizon_optifine::ctm::load(root)
-        } else {
-            Vec::new()
-        };
-        sprites.keep_apart(crate::connected::ConnectedTextures::matched_sprites(
-            &ctm_rules,
-        ));
        let mut models = if draws {
            let _step = crate::spans::startup::step("core.models_bake");
            crate::models::prepare_with_models(root, registry, &mut sprites, &parsed)?
@@ -391,7 +359,6 @@ impl RenderAssets {
            let mut found = Vec::new();
            crate::connected::ConnectedTextures::load(
                root,
-                ctm_rules,
                registry,
                &mut sprites,
                |state, face| {
@@ -415,8 +382,8 @@ impl RenderAssets {
        };
        // After the connected tiles: a tile identical to a block shares its layer, and the
        // overlays skip shared layers.
-        if draws && let Some(suffix) = crate::pack_hooks::formats().emissive_suffix(root) {
-            emissive = crate::native_emissive::load_overlays(root, &suffix, &mut sprites);
+        if draws {
+            emissive = crate::native_emissive::load_optifine(root, &mut sprites);
        }
        sprites.save_disk_cache();
        if draws {
@@ -529,29 +496,6 @@ mod tests {
        ));
    }

-    #[test]
-    fn equal_registries_are_leaked_once() {
-        use horizon_world::registry::BlockRegistry;
-        let registry = |extra: &str| {
-            let facts = format!(
-                r#"{{"defaults":{{"minecraft:air":0,"fixture:{extra}":1}},"states":[
-                    ["air",true,false,"","minecraft:air"],
-                    ["{extra}",false,false,"","fixture:{extra}"]
-                ]}}"#
-            );
-            BlockRegistry::from_facts_json(facts.as_bytes()).unwrap()
-        };
-        let first = super::intern_registry(registry("interned_once"));
-        let again = super::intern_registry(registry("interned_once"));
-        let other = super::intern_registry(registry("interned_other"));
-        assert!(std::ptr::eq(first, again), "equal content leaked twice");
-        assert!(!std::ptr::eq(first, other), "different content shared");
-        assert_eq!(
-            other.default_state("fixture:interned_other"),
-            Some(horizon_world::registry::BlockStateId(1))
-        );
-    }
-
    #[test]
    fn sprite_pixels_come_back_the_same_once_packed() {
        // Two layers of 16x16 RGBA with some structure, as sprites have.
@@ -233,11 +233,11 @@ pub fn texture_path(root: &Path, texture: &str, directory: &str) -> PathBuf {
    }
    let (namespace, path) = texture.split_once(':').unwrap_or(("minecraft", texture));
    let rel = format!("assets/{namespace}/{directory}/{path}.png");
-    // No `.`, `..` or empty segment, and no `\` (a separator on Windows, where `..\..` climbs).
-    let stays = rel
-        .split('/')
-        .all(|segment| !matches!(segment, "" | "." | "..") && !segment.contains('\\'));
-    root.join(if stays { &rel } else { NOWHERE })
+    root.join(if horizon_optifine::paths::valid(&rel) {
+        &rel
+    } else {
+        NOWHERE
+    })
 }

 /// `SpriteSourceList.list`: every sprite id of the atlas and its origin.
@@ -478,7 +478,6 @@ pub struct Audio {
    pub record_heard: bool,
    pub listener: [f64; 3],
    pub listener_yaw: f32,
-    pub listener_pitch: f32,
    pub master: f32,
    /// Seeds of positional plays (the client level random's `nextLong`).
    random: LegacyRandom,
@@ -723,29 +722,6 @@ impl Backend for MixerBackend {
    fn set_unmuffled(&mut self, channel: ChannelId, unmuffled: bool) {
        self.with(channel, |c| c.unmuffled = unmuffled);
    }
-    fn update_channel(&mut self, channel: ChannelId, volume: f32, pitch: f32, position: [f64; 3]) {
-        if let Ok(mut m) = self.mixer.lock()
-            && let Some(c) = m.channels.get_mut(&channel)
-        {
-            c.gain = volume;
-            c.pitch = pitch;
-            c.at = [position[0] as f32, position[1] as f32, position[2] as f32];
-        }
-    }
-    fn filter_stopped(&mut self, live: &[(u64, ChannelId)], stopped: &mut Vec<u64>) {
-        if let Ok(m) = self.mixer.lock() {
-            for &(h, c) in live {
-                if m.channels
-                    .get(&c)
-                    .is_none_or(|ch| ch.state == State::Stopped)
-                {
-                    stopped.push(h);
-                }
-            }
-        } else {
-            stopped.extend(live.iter().map(|&(h, _)| h));
-        }
-    }
    /// `getCompleteBuffer` (cached, else decoded on the decoder thread) or
    /// `getStream` (decoded on a thread of its own), then attach and
    /// `alSourcePlay`. A sound that cannot load leaves its source initial,
@@ -846,24 +822,18 @@ impl Backend for MixerBackend {
 /// pinned client's) rendered through `ALC_SOFT_loopback` within 1e-5.
 fn stereo_gains(right: f32, up: f32, forward: f32) -> [f32; 2] {
    let length = (right * right + up * up + forward * forward).sqrt();
-    stereo_gains_with_length(right, up, forward, length)
-}
-#[inline]
-fn stereo_gains_with_length(right: f32, up: f32, forward: f32, length: f32) -> [f32; 2] {
    if length <= f32::EPSILON {
-        return stereo_gains_with_length(0.0, 0.0, 1.0, 1.0);
+        return stereo_gains(0.0, 0.0, 1.0);
    }
-    let u = (up / length).clamp(-1.0, 1.0);
-    let cos_elev = (1.0 - u * u).max(0.0).sqrt();
+    let elevation = (up / length).clamp(-1.0, 1.0).asin();
    let mut azimuth = right.atan2(forward);
    if azimuth.abs() < std::f32::consts::FRAC_PI_2 {
        azimuth = (azimuth.abs() * 1.5)
            .min(std::f32::consts::FRAC_PI_2)
            .copysign(azimuth);
    }
-    let (sin_az, cos_az) = azimuth.sin_cos();
-    let side = sin_az * cos_elev;
-    let front = cos_az * cos_elev * 0.095_660_8;
+    let side = azimuth.sin() * elevation.cos();
+    let front = azimuth.cos() * elevation.cos() * 0.095_660_8;
    [0.5 - 0.5 * side + front, 0.5 + 0.5 * side + front]
 }
 /// The gain OpenAL applies for distance (`AL_LINEAR_DISTANCE` with reference
@@ -883,10 +853,16 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
    // and OpenAL's right = forward x up.
    let basis = |yaw: f32, pitch: f32| {
        let (yaw, pitch) = (f64::from(yaw.to_radians()), f64::from(pitch.to_radians()));
-        let (yaw_sin, yaw_cos) = yaw.sin_cos();
-        let (pitch_sin, pitch_cos) = pitch.sin_cos();
-        let forward = [-yaw_sin * pitch_cos, -pitch_sin, yaw_cos * pitch_cos];
-        let up = [-yaw_sin * pitch_sin, pitch_cos, yaw_cos * pitch_sin];
+        let forward = [
+            -yaw.sin() * pitch.cos(),
+            -pitch.sin(),
+            yaw.cos() * pitch.cos(),
+        ];
+        let up = [
+            -yaw.sin() * pitch.sin(),
+            pitch.cos(),
+            yaw.cos() * pitch.sin(),
+        ];
        let right = [
            forward[1] * up[2] - forward[2] * up[1],
            forward[2] * up[0] - forward[0] * up[2],
@@ -920,7 +896,7 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
    // Gains and pans per source for this buffer.
    let mut voices = std::mem::take(&mut mixer.voices);
    voices.clear();
-    for (id, c) in &mut mixer.channels {
+    for (id, c) in &mixer.channels {
        let Some((_, source_rate, source_channels)) = &c.samples else {
            continue;
        };
@@ -931,7 +907,6 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
        if c.state != State::Playing {
            continue;
        }
-
        let at = [f64::from(c.at[0]), f64::from(c.at[1]), f64::from(c.at[2])];
        let away = |listener: [f64; 3]| {
            [
@@ -940,56 +915,45 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
                at[2] - listener[2],
            ]
        };
-        let length_sq = |d: [f64; 3]| d[0] * d[0] + d[1] * d[1] + d[2] * d[2];
-        let camera = if !shared {
-            let cam = &mixer.cameras[0];
-            if c.relative || cam.2 == c.world {
-                Some((cam.0, cam.1))
-            } else {
-                None
-            }
-        } else {
-            mixer
-                .cameras
-                .iter()
-                .filter(|camera| c.relative || camera.2 == c.world)
-                .min_by(|a, b| length_sq(away(a.0)).total_cmp(&length_sq(away(b.0))))
-                .map(|camera| (camera.0, camera.1))
-        };
+        let length = |d: [f64; 3]| d[0] * d[0] + d[1] * d[1] + d[2] * d[2];
+        // The nearest camera hears it (one camera but in splitscreen).
+        let camera = mixer
+            .cameras
+            .iter()
+            .filter(|camera| c.relative || camera.2 == c.world)
+            .min_by(|a, b| length(away(a.0)).total_cmp(&length(away(b.0))))
+            .map(|camera| (camera.0, camera.1));
+        // Unheard sources still advance: returning to a world must not resume stale sounds.
        let (listener, (forward, up, right)) = camera.unwrap_or(([0.0; 3], basis(0.0, 0.0)));
        let d = if c.relative { at } else { away(listener) };
-        let d_sqr = length_sq(d);
-
-        let (gain, [left, right]) = if camera.is_none() {
-            (0.0, [0.0, 0.0])
-        } else if direct {
-            let gain = c.gain.clamp(0.0, 1.0);
-            (gain, [gain, gain])
-        } else {
-            let mut zero = false;
-            if let Some(max) = c.linear {
-                let max_d = max as f64;
-                if max <= 0.0 || (!c.relative && d_sqr >= max_d * max_d) {
-                    zero = true;
-                }
-            }
-            if zero {
-                (0.0, [0.0, 0.0])
-            } else {
-                let distance = d_sqr.sqrt() as f32;
-                let gain = c.gain.clamp(0.0, 1.0) * distance_gain(c.linear, distance);
-                let [mut left, mut right] = if c.relative {
-                    stereo_gains_with_length(d[0] as f32, d[1] as f32, -d[2] as f32, distance)
+        let distance = (d[0] * d[0] + d[1] * d[1] + d[2] * d[2]).sqrt() as f32;
+        let gain = if camera.is_some() {
+            c.gain.clamp(0.0, 1.0)
+                * if direct {
+                    1.0
                } else {
-                    stereo_gains_with_length(dot(d, right), dot(d, up), dot(d, forward), distance)
-                };
-                if shared {
-                    let middle = (left + right) * 0.5;
-                    left = middle + (left - middle) * 0.5;
-                    right = middle + (right - middle) * 0.5;
+                    distance_gain(c.linear, distance)
                }
-                (gain, [left * gain, right * gain])
+        } else {
+            0.0
+        };
+        let [left, right] = if direct {
+            [gain, gain]
+        } else {
+            // Relative sources are already in OpenAL's listener space (-Z ahead).
+            let [mut left, mut right] = if c.relative {
+                stereo_gains(d[0] as f32, d[1] as f32, -d[2] as f32)
+            } else {
+                stereo_gains(dot(d, right), dot(d, up), dot(d, forward))
+            };
+            if shared {
+                // Several players on the speakers: half the stereo width, as left and right are
+                // nobody's in particular.
+                let middle = (left + right) / 2.0;
+                left = middle + (left - middle) / 2.0;
+                right = middle + (right - middle) / 2.0;
            }
+            [left * gain, right * gain]
        };
        let step = f64::from(*source_rate) / f64::from(rate) * f64::from(c.pitch.max(0.0));
        voices.push((*id, [left, right, gain], step));
@@ -1010,40 +974,6 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
        };
        let source_channels = source_channels as usize;
        let frames = samples.len() / source_channels;
-        let inaudible = if channels >= 2 {
-            left == 0.0 && right == 0.0
-        } else {
-            gain == 0.0
-        };
-        if inaudible {
-            let buffer_frames = data.len() / channels;
-            // As the loop below: a sound of one frame or none stops, looping or not.
-            if !c.looping || frames <= 1 {
-                // `frames` may be 0: no `frames - 1` in usize. A step of 0 never
-                // reaches the end, as in the loop below.
-                let needed = frames as f64 - 1.0 - c.position;
-                if needed <= 0.0 {
-                    c.state = State::Stopped;
-                } else if step > 0.0 {
-                    let steps_to_stop = needed / step;
-                    if (buffer_frames as f64) >= steps_to_stop {
-                        c.state = State::Stopped;
-                    } else {
-                        c.position += step * (buffer_frames as f64);
-                    }
-                }
-            } else {
-                for _ in 0..buffer_frames {
-                    let i = c.position as usize;
-                    if i + 1 >= frames {
-                        c.position = 0.0;
-                    }
-                    c.position += step;
-                }
-            }
-            continue;
-        }
-
        let out: &mut [f32] = if muffling && !c.unmuffled {
            &mut bus
        } else {
@@ -1062,8 +992,8 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
            }
            let t = (c.position - i as f64) as f32;
            if source_channels > 1 {
-                let l = samples[i * 2] + (samples[(i + 1) * 2] - samples[i * 2]) * t;
-                let r = samples[i * 2 + 1] + (samples[(i + 1) * 2 + 1] - samples[i * 2 + 1]) * t;
+                let l = samples[i * 2] * (1.0 - t) + samples[(i + 1) * 2] * t;
+                let r = samples[i * 2 + 1] * (1.0 - t) + samples[(i + 1) * 2 + 1] * t;
                if channels >= 2 {
                    frame[0] += l * left;
                    frame[1] += r * right;
@@ -1071,7 +1001,7 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
                    frame[0] += (l + r) * 0.5 * gain;
                }
            } else {
-                let s = samples[i] + (samples[i + 1] - samples[i]) * t;
+                let s = samples[i] * (1.0 - t) + samples[i + 1] * t;
                if channels >= 2 {
                    frame[0] += s * left;
                    frame[1] += s * right;
@@ -1482,7 +1412,6 @@ impl Audio {
            record_heard: false,
            listener: [0.0; 3],
            listener_yaw: 0.0,
-            listener_pitch: 0.0,
            master: 1.0,
            random: crate::random_source::create(),
            source_override: None,
@@ -1606,12 +1535,8 @@ impl Audio {
    /// `SoundManager.updateSource`: the camera position and rotation
    /// (`Listener.setTransform` takes its forward and up vectors).
    pub fn set_listener(&mut self, position: [f64; 3], yaw: f32, pitch: f32) {
-        if self.listener == position && self.listener_yaw == yaw && self.listener_pitch == pitch {
-            return;
-        }
        self.listener = position;
        self.listener_yaw = yaw;
-        self.listener_pitch = pitch;
        if let Ok(mut m) = self.backend.mixer.lock() {
            if self.backend.owner == 0 {
                m.listener = position;
@@ -1651,7 +1576,6 @@ impl Audio {
            record_heard: false,
            listener: [0.0; 3],
            listener_yaw: 0.0,
-            listener_pitch: 0.0,
            master: self.master,
            random: crate::random_source::create(),
            source_override: None,
@@ -2185,25 +2109,6 @@ impl Audio {
            })
            .collect()
    }
-    /// Mixes one buffer of audio into `data` (channels: 1 or 2, rate in Hz).
-    pub fn mix_buffer(&mut self, data: &mut [f32], channels: usize, rate: u32) {
-        if let Ok(mut m) = self.backend.mixer.lock() {
-            mix(&mut m, data, channels, rate);
-        }
-    }
-    #[doc(hidden)]
-    pub fn insert_cached_sound(&mut self, key: &str, samples: Vec<f32>, rate: u32, channels: u16) {
-        if let Ok(mut c) = self.backend.cache.lock() {
-            c.insert(
-                key.to_owned(),
-                Some((std::sync::Arc::new(samples), rate, channels)),
-            );
-        }
-    }
-    #[doc(hidden)]
-    pub fn backend_live_for_bench(&mut self) {
-        self.backend.live = true;
-    }
 }
 impl Sounds for Audio {
    fn engine(&mut self) -> &mut SoundEngine {
@@ -2708,25 +2613,6 @@ mod tests {
        assert_eq!(data, [0.0; 4], "returning must not resume the old one-shot");
    }

-    /// A sound of one frame or none, heard or not, looping or not, stops at its first
-    /// buffer as the mixing loop stops it: none stays playing (and holds its channel).
-    #[test]
-    fn sounds_too_short_to_mix_stop_even_unheard() {
-        for (samples, looping) in [(vec![], false), (vec![1.0], false), (vec![1.0], true)] {
-            let mut mixer = Mixer::default();
-            let mut source = channel(samples.clone(), None, [0.0; 3], looping);
-            source.gain = 0.0;
-            mixer.channels.insert(1, source);
-            let mut data = [0.0; 4];
-            mix(&mut mixer, &mut data, 2, 48_000);
-            assert_eq!(
-                mixer.channels[&1].state,
-                State::Stopped,
-                "{samples:?} {looping}"
-            );
-        }
-    }
-
    #[test]
    fn variants_of_one_sound_are_the_same_sound() {
        assert_eq!(
@@ -7,7 +7,7 @@ use serde_json::Value;
 use std::{
    collections::{BTreeMap, HashMap},
    path::Path,
-    sync::{Arc, OnceLock},
+    sync::Arc,
 };

 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
@@ -398,37 +398,7 @@ impl Biomes {
    pub fn contains(&self, name: &str) -> bool {
        self.index.contains_key(name)
    }
-    /// The biome at `id`, clamped to the last entry when `id` is past the
-    /// table (a stale column from an older registry keeps its id).
-    ///
-    /// When the table is empty (a resource pack with no biome files), returns
-    /// a shared default plains biome instead of panicking on `list.len() - 1`.
    pub fn get(&self, id: u16) -> &BiomeInfo {
-        if self.list.is_empty() {
-            static DEFAULT: OnceLock<BiomeInfo> = OnceLock::new();
-            return DEFAULT.get_or_init(|| BiomeInfo {
-                spawns: HashMap::new(),
-                spawn_costs: HashMap::new(),
-                creature_probability: 0.0,
-                increased_fire_burnout: false,
-                name: "minecraft:plains".to_owned(),
-                temperature: 0.8,
-                frozen: false,
-                downfall: 0.4,
-                precipitation: false,
-                grass: 0x7f_c0_55,
-                modifier: GrassModifier::None,
-                foliage: 0x6a_ab_37,
-                dry_foliage: 0x79_75_54,
-                water: 0x3f_76_e4,
-                sky: None,
-                fog: None,
-                water_fog: 0x3f_76_e4,
-                ambient_particles: Vec::new(),
-                features: Vec::new(),
-                attributes: Default::default(),
-            });
-        }
        &self.list[usize::from(id).min(self.list.len() - 1)]
    }
    /// The name of biome `id`, plains (as for an unknown name) when the id is
@@ -825,34 +795,4 @@ mod blend_tests {
        }
        assert!(at(-2.0) > 0.0 && at(-2.0) < 0.5);
    }
-
-    /// An empty biome table (a resource pack with no biome files) must not
-    /// panic on `get`: before the fix, `list.len() - 1` underflowed.
-    #[test]
-    fn get_on_empty_biome_table_returns_default_instead_of_panicking() {
-        use std::sync::Arc;
-
-        let empty = Biomes {
-            builtin: Arc::new(Vec::new()),
-            index: HashMap::new(),
-            list: Vec::new(),
-            info_noise: SimplexNoise::with_skipped_offsets(&mut LegacyRandom::new(2345), true),
-            colormaps: Arc::new(Colormaps {
-                grass: Vec::new(),
-                foliage: Vec::new(),
-                dry: Vec::new(),
-            }),
-            packs: BTreeMap::new(),
-        };
-        // Any id returns the shared default plains biome, no panic.
-        let b = empty.get(0);
-        assert_eq!(b.name, "minecraft:plains");
-        let b = empty.get(65535);
-        assert_eq!(b.name, "minecraft:plains");
-        // Colours and temperature come from the default.
-        assert_eq!(b.temperature, 0.8);
-        assert_eq!(b.grass, 0x7f_c0_55);
-        assert_eq!(b.foliage, 0x6a_ab_37);
-        assert_eq!(b.water, 0x3f_76_e4);
-    }
 }
@@ -92,9 +92,6 @@ pub struct BlockEntities {
    /// instance blocks, `shows_box`), so a frame looks at them without scanning the map.
    /// Like `mods`, one taken out stays listed until `put` or `remove`.
    boxes: FxHashSet<Pos>,
-    /// The signs a player's editor is on (`SignBlockEntity.playerWhoMayEdit`
-    /// set), so the level's tick checks those alone instead of every sign.
-    sign_editors: FxHashSet<Pos>,
    asleep: FxHashSet<Pos>,
 }

@@ -315,44 +312,6 @@ impl BlockEntities {
            .filter(move |((cx, cz), _)| !far(*cx, x) && !far(*cz, z))
            .flat_map(|(_, set)| set)
    }
-    /// `SignBlockEntity.playerWhoMayEdit` of the sign at `pos`.
-    pub fn sign_editor(&self, pos: &Pos) -> Option<u128> {
-        match self.map.get(pos) {
-            Some(BlockEntity::Sign(sign)) => sign.allowed_editor,
-            _ => None,
-        }
-    }
-    /// `SignBlockEntity.setAllowedPlayerEditor`: the one player whose editor
-    /// is on the sign at `pos`, or `None` for nobody's.
-    pub fn set_sign_editor(&mut self, pos: Pos, who: Option<u128>) {
-        let Some(BlockEntity::Sign(sign)) = self.map.get_mut(&pos) else {
-            return;
-        };
-        sign.allowed_editor = who;
-        if who.is_some() {
-            self.sign_editors.insert(pos);
-        } else {
-            self.sign_editors.remove(&pos);
-        }
-    }
-    /// The positions of the signs a player's editor is on, in no order.
-    pub fn sign_editors(&self) -> impl Iterator<Item = &Pos> {
-        self.sign_editors.iter()
-    }
-    /// Drops `pos` from the signs an editor is on, for a sign that is gone or
-    /// no longer holds one. `set_sign_editor` keeps the list itself.
-    pub fn forget_sign_editor(&mut self, pos: Pos) {
-        self.sign_editors.remove(&pos);
-    }
-    /// Keeps `pos` listed in `sign_editors` exactly while `entity` holds an
-    /// editor, as `note_box` does for the boxes.
-    fn note_sign_editor(&mut self, pos: Pos, entity: &BlockEntity) {
-        if matches!(entity, BlockEntity::Sign(sign) if sign.allowed_editor.is_some()) {
-            self.sign_editors.insert(pos);
-        } else {
-            self.sign_editors.remove(&pos);
-        }
-    }
    /// `LevelChunk.getBlockEntity`: the block entity at `pos`, if any.
    pub fn get(&self, pos: &Pos) -> Option<&BlockEntity> {
        self.map.get(pos)
@@ -392,7 +351,6 @@ impl BlockEntities {
            self.attachments.remove(&pos);
        }
        let new_box = shows_box(&entity);
-        self.note_sign_editor(pos, &entity);
        self.asleep.remove(&pos);
        let old = self.map.insert(pos, entity);
        if old.is_none() {
@@ -440,7 +398,6 @@ impl BlockEntities {
            forget_mod(&mut self.mods, *pos);
        }
        self.boxes.remove(pos);
-        self.sign_editors.remove(pos);
        removed
    }
    /// The block entity at `pos`, out of the map for a while: its slot stays
@@ -461,7 +418,6 @@ impl BlockEntities {
            self.mods.entry(chunk_of(pos)).or_default().insert(pos);
        }
        self.note_box(pos, Some(&entity));
-        self.note_sign_editor(pos, &entity);
        if self.map.insert(pos, entity).is_none()
            && !self.live.contains_key(&pos)
            && !self.pending.contains_key(&pos)
@@ -489,7 +445,6 @@ impl BlockEntities {
            &mut self.attachments,
        );
        let (mods, boxes) = (&mut self.mods, &mut self.boxes);
-        let sign_editors = &mut self.sign_editors;
        self.asleep.clear();
        self.map.retain(|p, e| {
            let kept = keep(p, e);
@@ -499,7 +454,6 @@ impl BlockEntities {
                pending.remove(p);
                forget_mod(mods, *p);
                boxes.remove(p);
-                sign_editors.remove(p);
            }
            kept
        });
@@ -509,7 +463,6 @@ impl BlockEntities {
        self.map.clear();
        self.mods.clear();
        self.boxes.clear();
-        self.sign_editors.clear();
        self.asleep.clear();
        self.tickers = Arc::default();
        self.live.clear();
@@ -531,7 +484,6 @@ impl BlockEntities {
            self.asleep.remove(&p);
            let new_is_mod = matches!(e, BlockEntity::Mod(_));
            self.note_box(p, Some(&e));
-            self.note_sign_editor(p, &e);
            let old = self.map.insert(p, e);
            if old.is_some() {
                self.replaced.insert(p);
@@ -15,7 +15,7 @@ use crate::{
    font::{Font, Glyph},
    gfx::mark_oit,
    hud::Rect,
-    mesher::{CULL_BACK, Vertex, cull_back},
+    mesher::{CULL_BACK, Vertex},
    models::load_visibility,
    signs::{self, SignData, SignText},
    text::{Style, Text},
@@ -3093,9 +3093,9 @@ impl BlockEntityRenderer {
                    }
                }
                // `DecoratedPotRenderer` submits every part with `entitySolid`, which culls
-                // back faces: the flat `top` and `bottom` planes show one side each (#15322).
+                // back faces: the flat `top` and `bottom` planes show one side each.
                for vertex in &mut out[first..] {
-                    vertex.normal = cull_back(vertex.normal);
+                    vertex.normal = CULL_BACK;
                }
            }
            Kind::EndPortal => {
@@ -4760,12 +4760,9 @@ mod tests {
            28,
            "the pot submits all of vanilla's quads"
        );
-        // A part the shader shades keeps its normal (#15322): `w` alone says cull.
        assert!(
-            verts
-                .iter()
-                .all(|v| v.normal[3] == crate::mesher::SHADED_CULL_W && v.normal[..3] != [0; 3]),
-            "entitySolid culls the pot's back faces and shades it by its normals"
+            verts.iter().all(|v| v.normal == CULL_BACK),
+            "entitySolid culls the pot's back faces"
        );
    }

@@ -24,7 +24,7 @@ struct Out {
    return out;
 }
@fragment fn fs_border(in: Out) -> @location(0) vec4<f32> {
-    return frame_stored(border_color(in));
+    return border_color(in);
 }
 fn border_color(in: Out) -> vec4<f32> {
    let color = textureSample(forcefield, forcefield_sampler, in.uv);
@@ -84,71 +84,6 @@ pub fn contents_effects(stack: &ItemStack) -> Vec<(&'static str, i32, i32)> {
        )
        .collect()
 }
-/// `PotionContents.getAllEffects`, retaining each custom instance's flags.
-pub fn contents_instances(stack: &ItemStack) -> Vec<crate::effects::EffectInstance> {
-    use horizon_client_core::nbt_value::{number, text};
-    use horizon_world::nbt::Tag;
-    let mut effects: Vec<_> = stack
-        .potion()
-        .and_then(potion)
-        .map_or(&[][..], |p| p.effects)
-        .iter()
-        .map(|(id, duration, amp)| crate::effects::EffectInstance::new(id, *duration, *amp))
-        .collect();
-    if let Some((_, Tag::List(custom))) = stack
-        .data()
-        .and_then(|d| d.potion_extra.iter().find(|(k, _)| k == "custom_effects"))
-    {
-        for e in custom {
-            let Some(def) = text(e.get("id")).and_then(|id| effect(&id)) else {
-                continue;
-            };
-            let mut instance = crate::effects::EffectInstance::new(
-                def.id,
-                number(e.get("duration")).unwrap_or(0) as i32,
-                number(e.get("amplifier")).unwrap_or(0).clamp(0, 255) as i32,
-            );
-            instance.ambient = number(e.get("ambient")).unwrap_or(0) != 0;
-            instance.visible = number(e.get("show_particles")) != Some(0);
-            effects.push(instance);
-        }
-    }
-    effects
-}
-/// `PotionContents.getColor`: an explicit colour wins; otherwise mix only
-/// visible base and custom effects, with their amplifier weights.
-pub fn contents_color(stack: &ItemStack) -> u32 {
-    use horizon_client_core::nbt_value::number;
-    if let Some(color) = stack
-        .data()
-        .and_then(|d| d.potion_extra.iter().find(|(k, _)| k == "custom_color"))
-        .and_then(|(_, v)| number(Some(v)))
-    {
-        return color as u32;
-    }
-    0xFF00_0000
-        | horizon_client_core::potions::effects_color(
-            contents_instances(stack)
-                .iter()
-                .filter(|e| e.visible)
-                .map(|e| (e.id, e.amplifier)),
-        )
-}
-/// `PotionContents.equals(EMPTY)`: colour and custom name also make contents
-/// nonempty, even when there is no registered potion or custom effect.
-pub fn contents_empty(stack: &ItemStack) -> bool {
-    use horizon_world::nbt::Tag;
-    stack.potion().is_none()
-        && stack.data().is_none_or(|d| {
-            d.potion_extra
-                .iter()
-                .all(|(key, value)| match key.as_str() {
-                    "custom_effects" => matches!(value, Tag::List(list) if list.is_empty()),
-                    "custom_color" | "custom_name" => false,
-                    _ => true,
-                })
-        })
-}
 /// Roman amplifier suffix (`potion.potency.N`) and duration lines of a potion.
 pub fn tooltip(
    potion: Option<&str>,
@@ -771,39 +706,4 @@ mod tests {
        let lines = effect_lines([("minecraft:resistance", 15, 0)], 1.0, &translate);
        assert_eq!(lines[0].0, "resistance");
    }
-    #[test]
-    fn custom_contents_color_and_empty_semantics() {
-        use horizon_world::nbt::Tag;
-        let mut stack = ItemStack::new("minecraft:tipped_arrow", 1);
-        assert!(contents_empty(&stack));
-        stack
-            .data_mut()
-            .potion_extra
-            .push(("custom_effects".into(), Tag::List(Vec::new())));
-        assert!(contents_empty(&stack));
-        stack.data_mut().potion_extra = vec![(
-            "custom_effects".into(),
-            Tag::List(vec![
-                Tag::compound([
-                    ("id", Tag::String("minecraft:glowing".into())),
-                    ("amplifier", Tag::Int(1)),
-                ]),
-                Tag::compound([
-                    ("id", Tag::String("minecraft:poison".into())),
-                    ("show_particles", Tag::Byte(0)),
-                ]),
-            ]),
-        )];
-        assert!(!contents_empty(&stack));
-        // Glowing's colour; hidden poison contributes no weight.
-        assert_eq!(contents_color(&stack), 0xFF94_A061);
-        stack
-            .data_mut()
-            .potion_extra
-            .push(("custom_color".into(), Tag::Int(123456)));
-        assert_eq!(contents_color(&stack), 123456);
-        stack.data_mut().potion_extra = vec![("custom_name".into(), Tag::String("test".into()))];
-        assert!(!contents_empty(&stack));
-        assert_eq!(contents_color(&stack), 0xFF38_5DC6);
-    }
 }
@@ -16,45 +16,6 @@ use crate::{
 #[path = "chat_tests.rs"]
 mod tests;

-/// `FilterMask.applyWithFormatting` over a player message's signed content, as
-/// the packet's mask `(type, bit set)`: as it is when passed through, none when
-/// fully filtered, and when partly filtered each masked UTF-16 unit becomes a
-/// `#` in `FILTERED_STYLE` (dark grey, hover "chat.filtered").
-pub fn filtered_message(
-    content: &str,
-    (kind, bits): &(i32, Vec<i64>),
-) -> Option<serde_json::Value> {
-    match kind {
-        1 => return None,
-        2 => {}
-        _ => return Some(serde_json::Value::from(content)),
-    }
-    let masked = |i: usize| {
-        bits.get(i / 64)
-            .is_some_and(|w| (*w as u64 >> (i % 64)) & 1 != 0)
-    };
-    let units: Vec<u16> = content.encode_utf16().collect();
-    let mut parts = Vec::new();
-    let mut start = 0;
-    while start < units.len() {
-        let filtered = masked(start);
-        let end = (start..units.len())
-            .find(|&i| masked(i) != filtered)
-            .unwrap_or(units.len());
-        parts.push(if filtered {
-            serde_json::json!({
-                "text": "#".repeat(end - start),
-                "color": "dark_gray",
-                "hover_event": {"action": "show_text", "value": {"translate": "chat.filtered"}},
-            })
-        } else {
-            serde_json::Value::from(String::from_utf16_lossy(&units[start..end]))
-        });
-        start = end;
-    }
-    Some(serde_json::json!({"text": "", "extra": parts}))
-}
-
 /// `CommandHistory.PERSISTED_COMMANDS_FILE_NAME` and its size cap.
 const COMMAND_HISTORY_FILE: &str = "command_history.txt";
 const MAX_PERSISTED_COMMAND_HISTORY: usize = 50;
@@ -568,8 +529,6 @@ impl Chat {
    pub fn set_qol(&mut self, atlas: &HudAtlas, qol: ChatQol) {
        if self.qol != qol {
            self.qol = qol;
-            self.scroll = 0;
-            self.new_since_scroll = false;
            self.rewrap(&atlas.font);
        }
    }
@@ -595,25 +554,20 @@ impl Chat {
            .filter(|q| !q.trim().is_empty());
        if self.search != query {
            self.search = query;
-            self.scroll = 0;
-            self.new_since_scroll = false;
            self.rewrap(font);
        }
    }
    pub fn searching(&self) -> bool {
        self.search.is_some()
    }
-    /// Re-wrap after a width or scale change (`ChatComponent.rescaleChat`):
-    /// `resetChatScroll`, then the messages the Chat option shows.
+    /// Re-wrap after a width or scale change (ChatComponent.rescaleChat),
+    /// keeping only the messages the Chat option shows.
    pub fn rescale(&mut self, atlas: &HudAtlas) {
-        self.scroll = 0;
-        self.new_since_scroll = false;
        self.rewrap(&atlas.font);
    }
-    /// `ChatComponent.refreshTrimmedMessages`: the lines are laid out again
-    /// where the reader was (`chatScrollbarPos` survives a filter change);
-    /// `rescale` resets the scroll itself, as `rescaleChat` does.
    fn rewrap(&mut self, font: &crate::font::Font) {
+        self.scroll = 0;
+        self.new_since_scroll = false;
        self.lines.clear();
        let mut messages = std::mem::take(&mut self.messages);
        for m in messages.iter_mut().rev() {
@@ -1981,11 +1935,7 @@ impl ChatScreen {
            return false;
        }
        let max = l.list.len().saturating_sub(self.layout.line_limit) as i32;
-        // Round instead of truncating: touchpad/PixelDelta produces fractional
-        // amounts and truncation drops movement in one direction (#14338).
-        l.offset = (l.offset as f64 - amount.clamp(-1.0, 1.0))
-            .round()
-            .clamp(0.0, max as f64) as usize;
+        l.offset = ((l.offset as f64 - amount.clamp(-1.0, 1.0)) as i32).clamp(0, max) as usize;
        true
    }
    /// `CommandSuggestions.formatText`: argument colours over the input. The
@@ -2097,11 +2047,6 @@ impl ChatScreen {
    ) {
        let limit = l.list.len().min(self.layout.line_limit);
        let [rx, ry, rw, rh] = l.rect;
-        // SuggestionsList.extractRenderState: the whole list asks for the
-        // pointing hand while the pointer is inside its rectangle.
-        if mouse.0 >= rx && mouse.0 < rx + rw && mouse.1 >= ry && mouse.1 < ry + rh {
-            crate::widgets::request_cursor(crate::widgets::Cursor::PointingHand);
-        }
        let has_prev = l.offset > 0;
        let has_next = l.list.len() > l.offset + limit;
        let moved = l.last_mouse != mouse;
@@ -1026,100 +1026,3 @@ fn a_compact_repeat_keeps_the_scrolled_view_still() {
    says(&mut chat, "new");
    assert_eq!(chat.scroll, 6);
 }
-
-/// `FilterMask.applyWithFormatting`: a pass-through mask keeps the message, a
-/// fully filtered one hides it, and a partial one turns each masked UTF-16 unit
-/// into a dark grey `#` whose hover reads `chat.filtered`.
-#[test]
-fn a_server_filter_mask_hides_or_masks_the_message() {
-    let text = |v: &serde_json::Value| crate::component::to_text(v, &mut |s| Text::literal(s));
-    let shown = |content: &str, mask: (i32, Vec<i64>)| {
-        filtered_message(content, &mask).map(|v| text(&v).plain())
-    };
-    assert_eq!(shown("hello", (0, vec![])), Some("hello".to_owned()));
-    assert_eq!(shown("hello", (1, vec![])), None);
-    assert_eq!(shown("hello", (2, vec![0b0110])), Some("h##lo".to_owned()));
-    assert_eq!(
-        shown("hello", (2, vec![0b1_0001])),
-        Some("#ell#".to_owned())
-    );
-    // An emoji is two UTF-16 units, so two bits and two `#`.
-    assert_eq!(
-        shown("a\u{1F600}b", (2, vec![0b0110])),
-        Some("a##b".to_owned())
-    );
-    // Bit 65 is in the second word.
-    let long = "x".repeat(70);
-    let mut expected = long.clone();
-    expected.replace_range(65..66, "#");
-    assert_eq!(shown(&long, (2, vec![0, 0b10])), Some(expected));
-    let masked = text(&filtered_message("hello", &(2, vec![0b0110])).unwrap());
-    let hash = masked.spans.iter().find(|s| s.text == "##").unwrap();
-    assert_eq!(hash.style.color, Some(text::DARK_GRAY));
-    let hover = hash.style.hover.as_ref().unwrap();
-    assert_eq!(hover.spans[0].text, "chat.filtered");
-    assert!(
-        masked
-            .spans
-            .iter()
-            .filter(|s| s.text != "##")
-            .all(|s| s.style.color.is_none())
-    );
-}
-
-/// `ChatComponent.refreshTrimmedMessages`: a filter change lays the lines out
-/// again but keeps `chatScrollbarPos` and `newMessageSinceScroll`; only
-/// `rescaleChat` resets them, after `resetChatScroll`.
-#[test]
-fn a_chat_option_change_keeps_the_readers_place_but_a_rescale_does_not() {
-    let font = font();
-    let mut chat = Chat::default();
-    for i in 0..60 {
-        chat.add_message(
-            &font,
-            Text::literal(format!("line {i}")),
-            None,
-            ChatSource::Server,
-            0,
-            false,
-        );
-    }
-    chat.scroll = 3;
-    chat.new_since_scroll = true;
-    chat.set_abilities(&font, ChatAbilities::new(ChatVisibility::System));
-    assert_eq!(chat.scroll, 3);
-    assert!(chat.new_since_scroll);
-    let atlas = crate::hud::HudAtlas::build(Path::new("/nonexistent/horizon-test-assets")).unwrap();
-    chat.rescale(&atlas);
-    assert_eq!(chat.scroll, 0);
-    assert!(!chat.new_since_scroll);
-}
-
-/// `SuggestionsList.extractRenderState`: the list's rectangle asks for the
-/// pointing hand; outside it the cursor stays the arrow.
-#[test]
-fn the_suggestion_list_asks_for_the_pointing_hand() {
-    let font = font();
-    let m = Measure(&font);
-    let registries = Registries::default();
-    let c = Commands {
-        dispatcher: crate::command::vanilla::game_dispatcher(),
-        registries: &registries,
-    };
-    let mut screen = ChatScreen::new(&m, &c, "", false, 0, 640, 360, full());
-    screen.type_text(&m, &c, "/");
-    let rect = screen
-        .suggestions
-        .as_ref()
-        .expect("the root commands are a suggestion list")
-        .rect;
-    let _ = crate::widgets::take_cursor();
-    screen.draw(&m, (rect[0] + 2, rect[1] + 2), 0, 0);
-    assert_eq!(
-        crate::widgets::take_cursor(),
-        crate::widgets::Cursor::PointingHand
-    );
-    let _ = crate::widgets::take_cursor();
-    screen.draw(&m, (rect[0] - 1, rect[1] + 2), 0, 0);
-    assert_eq!(crate::widgets::take_cursor(), crate::widgets::Cursor::Arrow);
-}
@@ -4,7 +4,6 @@
 use horizon_core::paletted::{PalettedContainer, Strategy};
 use horizon_world::nbt::{Compound, Tag};
 use horizon_world::registry::BlockStateId;
-use std::sync::atomic::{AtomicI16, AtomicU64, Ordering};
 use std::sync::{Arc, OnceLock};

 pub mod block_entity;
@@ -196,7 +195,7 @@ impl ColumnLayout {
    }
    /// The index of the section holding block `y`, if the column holds it.
    pub fn section_index(self, y: i32) -> Option<usize> {
-        usize::try_from((i64::from(y) - i64::from(self.min_y)) >> 4)
+        usize::try_from((y - self.min_y) >> 4)
            .ok()
            .filter(|&s| s < self.sections)
    }
@@ -458,44 +457,6 @@ impl Light {
        }
    }
 }
-/// One of a chunk's heightmaps (`Chunk::surface`): the heights, built whole on the first read,
-/// and the columns a write may have moved since, each found again on its next read. Reads share
-/// the chunk (helper threads read the world): a stale column is found the same by any of them.
-#[derive(Default)]
-struct Heights {
-    heights: OnceLock<Box<[AtomicI16; 256]>>,
-    stale: [AtomicU64; 4],
-}
-impl Heights {
-    /// `Heightmap.update`: a write two or more below column `i`'s height can't move it; any
-    /// other marks the column.
-    fn write(&mut self, i: usize, y: i32) {
-        let Some(heights) = self.heights.get_mut() else {
-            return;
-        };
-        let stale = self.stale[i >> 6].get_mut();
-        if *stale & 1 << (i & 63) == 0 && y >= i32::from(*heights[i].get_mut()) - 1 {
-            *stale |= 1 << (i & 63);
-        }
-    }
-}
-impl Clone for Heights {
-    fn clone(&self) -> Self {
-        let copy = Self::default();
-        // A reader can refresh a height and then clear its stale bit while we clone. Copy the
-        // bits first: a stale snapshot will rescan; a clean one acquires the refreshed height.
-        // Copying heights first could keep an old height with a newly cleared bit.
-        for (to, from) in copy.stale.iter().zip(&self.stale) {
-            to.store(from.load(Ordering::Acquire), Ordering::Relaxed);
-        }
-        if let Some(heights) = self.heights.get() {
-            let _ = copy.heights.set(Box::new(std::array::from_fn(|i| {
-                AtomicI16::new(heights[i].load(Ordering::Relaxed))
-            })));
-        }
-        copy
-    }
-}
 #[inline]
 fn column(x: i32, z: i32) -> usize {
    ((z & 15) << 4 | (x & 15)) as usize
@@ -613,10 +574,10 @@ pub struct Chunk {
    pub sections: Vec<Arc<Section>>,
    /// `Heightmap.Types.WORLD_SURFACE` per column (`z << 4 | x`): one above
    /// the highest non-air block, or the column's minimum Y. Built on the first read; a
-    /// `set` that can move a column's surface marks that column, found again on its next read.
-    surface: Heights,
+    /// `set` that can move a column's surface drops it.
+    surface: OnceLock<Box<[i16; 256]>>,
    /// `Heightmap.Types.MOTION_BLOCKING` per column, kept like `surface`.
-    motion_blocking: Heights,
+    motion_blocking: OnceLock<Box<[i16; 256]>>,
    pub lit: bool,
    /// Light read from a save with `isLightOn`: no light job is needed.
    pub light_loaded: bool,
@@ -657,8 +618,8 @@ impl Chunk {
            z,
            min_y: layout.min_y(),
            sections: (0..layout.sections()).map(|_| empty.clone()).collect(),
-            surface: Heights::default(),
-            motion_blocking: Heights::default(),
+            surface: OnceLock::new(),
+            motion_blocking: OnceLock::new(),
            lit: false,
            light_loaded: false,
            fresh: false,
@@ -700,7 +661,7 @@ impl Chunk {
    /// The index of the section holding block `y`, if the column holds it.
    #[inline]
    pub fn section_index(&self, y: i32) -> Option<usize> {
-        usize::try_from((i64::from(y) - i64::from(self.min_y)) >> 4)
+        usize::try_from((y - self.min_y) >> 4)
            .ok()
            .filter(|&s| s < self.sections.len())
    }
@@ -737,7 +698,12 @@ impl Chunk {
        // move it. Any other change rebuilds that map on the next read.
        if previous != v {
            for map in [&mut self.surface, &mut self.motion_blocking] {
-                map.write(column(x, z), y);
+                if map
+                    .get()
+                    .is_some_and(|heights| y >= i32::from(heights[column(x, z)]) - 1)
+                {
+                    *map = OnceLock::new();
+                }
            }
        }
        previous
@@ -748,55 +714,24 @@ impl Chunk {
        let section = Arc::make_mut(&mut self.sections[s]);
        section.blocks = Section::from_blocks(values);
        section.compact();
-        self.surface = Heights::default();
-        self.motion_blocking = Heights::default();
+        self.surface = OnceLock::new();
+        self.motion_blocking = OnceLock::new();
    }
    /// `getHeight(Heightmap.Types.WORLD_SURFACE, x, z)` (`x`, `z` within the
    /// chunk): one above the highest block that isn't `air`, or the column's
    /// minimum Y.
    /// Sections must change only through `set` once this has been read.
    pub fn world_surface(&self, x: i32, z: i32, air: impl Fn(u32) -> bool) -> i32 {
-        self.height(&self.surface, x, z, |v| !air(v))
+        let surface = self.surface.get_or_init(|| self.prime(|v| !air(v)));
+        i32::from(surface[column(x, z)])
    }
    /// `getHeight(Heightmap.Types.MOTION_BLOCKING, x, z)` (`x`, `z` within
    /// the chunk): one above the highest state where `blocks` (a motion
    /// blocking block or a fluid), or the column's minimum Y. Kept as
    /// `world_surface` is.
    pub fn motion_blocking(&self, x: i32, z: i32, blocks: impl Fn(u32) -> bool) -> i32 {
-        self.height(&self.motion_blocking, x, z, blocks)
-    }
-    /// One column's height in `map`: the whole map built on its first read, a column a write
-    /// marked found again down that column alone.
-    fn height(&self, map: &Heights, x: i32, z: i32, counts: impl Fn(u32) -> bool) -> i32 {
-        let heights = map.heights.get_or_init(|| {
-            let built = self.prime(&counts);
-            Box::new(std::array::from_fn(|i| AtomicI16::new(built[i])))
-        });
-        let i = column(x, z);
-        let (word, bit) = (i >> 6, 1u64 << (i & 63));
-        if map.stale[word].load(Ordering::Acquire) & bit != 0 {
-            let height = self.column_height(i, &counts);
-            heights[i].store(height, Ordering::Relaxed);
-            map.stale[word].fetch_and(!bit, Ordering::Release);
-            return i32::from(height);
-        }
-        i32::from(heights[i].load(Ordering::Relaxed))
-    }
-    /// [`Self::prime`] for column `i` alone.
-    fn column_height(&self, i: usize, counts: impl Fn(u32) -> bool) -> i16 {
-        for (s, section) in self.sections.iter().enumerate().rev() {
-            if section.blocks.uniform().is_some_and(|v| !counts(v)) {
-                continue;
-            }
-            let base = self.min_y + s as i32 * 16;
-            if let Some(dy) = (0..16)
-                .rev()
-                .find(|&dy| counts(section.blocks.get(dy << 8 | i)))
-            {
-                return (base + dy as i32 + 1) as i16;
-            }
-        }
-        self.min_y as i16
+        let heights = self.motion_blocking.get_or_init(|| self.prime(blocks));
+        i32::from(heights[column(x, z)])
    }
    /// `Heightmap.primeHeightmaps`: each section from the top, skipping
    /// those of one state that doesn't count, until every column is found.
@@ -862,7 +797,7 @@ impl Chunk {
            + self.sections.capacity() * std::mem::size_of::<Arc<Section>>();
        census.heightmap_bytes += [&self.surface, &self.motion_blocking]
            .iter()
-            .filter(|map| map.heights.get().is_some())
+            .filter(|map| map.get().is_some())
            .count()
            * std::mem::size_of::<[i16; 256]>();
        for section in &self.sections {
@@ -984,24 +919,6 @@ pub struct ChunkExtras {
 mod tests {
    use super::*;
    #[test]
-    fn extreme_y_queries_are_air_and_writes_leave_the_column_unchanged() {
-        for layout in [ColumnLayout::VANILLA, ColumnLayout::new(0, 256).unwrap()] {
-            let mut chunk = Chunk::with_layout(0, 0, layout);
-            chunk.set(0, layout.min_y(), 0, 7);
-            for y in [i32::MIN, i32::MIN + 63, -2_146_769_275, i32::MAX] {
-                assert_eq!(layout.section_index(y), None);
-                assert_eq!(chunk.section_index(y), None);
-                assert_eq!(chunk.get(0, y, 0), 0);
-                assert_eq!(
-                    chunk.light(0, y, 0),
-                    if y < layout.min_y() { 0 } else { 0xf0 }
-                );
-                chunk.set(0, y, 0, 9);
-            }
-            assert_eq!(chunk.get(0, layout.min_y(), 0), 7);
-        }
-    }
-    #[test]
    fn each_light_form_keeps_every_value_and_run() {
        // Sky varies alone, block varies alone, both, neither.
        let cases: [(fn(usize) -> u8, &str); 4] = [
@@ -1103,89 +1020,9 @@ mod tests {
        let before = chunk.world_surface(3, 3, is_air);
        chunk.set(3, MIN_Y + HEIGHT, 3, stone);
        chunk.set(3, before - 1, 3, chunk.get(3, before - 1, 3));
-        assert!(chunk.surface.heights.get().is_some());
+        assert!(chunk.surface.get().is_some());
        assert_eq!(chunk.world_surface(3, 3, |_| unreachable!()), before);
    }
-    /// A write two below a column's height can't move it, so the next read asks about no block;
-    /// a write at or above it (placing on top, clearing the top block) is found again on the next
-    /// read by looking down that column alone, and the other columns keep their heights.
-    #[test]
-    fn a_write_finds_its_own_column_again() {
-        // Each column holds its own state (16 + i), so a read that looks at another column's
-        // blocks shows up as a state that isn't air or this column's.
-        let state = |i: usize| 16 + i as u32;
-        let mut chunk = Chunk::empty(0, 0);
-        for i in 0..256 {
-            for y in MIN_Y..MIN_Y + 20 + (i as i32 % 7) {
-                chunk.set(i as i32 & 15, y, i as i32 >> 4, state(i));
-            }
-        }
-        let seen = std::cell::RefCell::new(Vec::new());
-        let surface = |c: &Chunk, i: usize| {
-            c.world_surface(i as i32 & 15, i as i32 >> 4, |v| {
-                seen.borrow_mut().push(v);
-                v == 0
-            })
-        };
-        let heights: Vec<i32> = (0..256).map(|i| surface(&chunk, i)).collect();
-        assert_eq!(heights[0], MIN_Y + 20);
-        assert_eq!(heights[6], MIN_Y + 26);
-        seen.borrow_mut().clear();
-
-        let (column, x, z) = (0x35, 5, 3);
-        let top = heights[column];
-        // Two below the height: the column keeps its map entry.
-        chunk.set(x, top - 2, z, 0);
-        assert_eq!(surface(&chunk, column), top);
-        assert!(seen.borrow().is_empty());
-        chunk.set(x, top - 2, z, state(column));
-
-        // At the height: placed on top, found again down this column only.
-        chunk.set(x, top, z, state(column));
-        assert_eq!(surface(&chunk, column), top + 1);
-        assert!(!seen.borrow().is_empty());
-        assert!(seen.borrow().iter().all(|&v| v == 0 || v == state(column)));
-        seen.borrow_mut().clear();
-        assert_eq!(surface(&chunk, column), top + 1);
-        for i in (0..256).filter(|&i| i != column) {
-            assert_eq!(surface(&chunk, i), heights[i]);
-        }
-        assert!(
-            seen.borrow().is_empty(),
-            "a read found again an untouched column"
-        );
-
-        // One below the height: the top block cleared, the height drops by one.
-        chunk.set(x, top, z, 0);
-        assert_eq!(surface(&chunk, column), top);
-        assert!(seen.borrow().iter().all(|&v| v == 0 || v == state(column)));
-    }
-    /// Chunk snapshots can be cloned while helper threads refresh a stale height. No snapshot
-    /// may retain the old height with its stale bit cleared, for either map.
-    #[test]
-    fn cloning_during_a_height_refresh_keeps_the_new_height() {
-        for _ in 0..4096 {
-            let mut chunk = Chunk::empty(0, 0);
-            chunk.set(0, MIN_Y + 4, 0, 1);
-            assert_eq!(chunk.world_surface(0, 0, |v| v == 0), MIN_Y + 5);
-            assert_eq!(chunk.motion_blocking(0, 0, |v| v != 0), MIN_Y + 5);
-            chunk.set(0, MIN_Y + 5, 0, 1);
-            let ready = std::sync::Barrier::new(2);
-            std::thread::scope(|scope| {
-                scope.spawn(|| {
-                    ready.wait();
-                    assert_eq!(chunk.world_surface(0, 0, |v| v == 0), MIN_Y + 6);
-                    assert_eq!(chunk.motion_blocking(0, 0, |v| v != 0), MIN_Y + 6);
-                });
-                ready.wait();
-                for _ in 0..4 {
-                    let snapshot = chunk.clone();
-                    assert_eq!(snapshot.world_surface(0, 0, |v| v == 0), MIN_Y + 6);
-                    assert_eq!(snapshot.motion_blocking(0, 0, |v| v != 0), MIN_Y + 6);
-                }
-            });
-        }
-    }
    /// MOTION_BLOCKING ignores states that don't count (air, grass) and
    /// follows writes as the surface map does, both maps kept at once.
    #[test]
@@ -513,10 +513,6 @@ pub struct SignData {
    pub waxed: bool,
    /// `allow_op_features`: the sign's click events may run commands.
    pub allow_op_features: bool,
-    /// `playerWhoMayEdit`: the one player whose editor is on this sign, as a
-    /// UUID. Every other player's click, write and applicator is refused
-    /// while it is set. Not saved (vanilla keeps it out of the NBT).
-    pub allowed_editor: Option<u128>,
 }
 /// `VibrationInfo`.
 #[derive(Clone, Copy, Debug, PartialEq)]
@@ -543,7 +539,6 @@ pub struct Data {
    pub current: Option<Info>,
    pub travel: i32,
    pub selector: Selector,
-    pub reload_particle: bool,
 }
 /// Which sculk block entity this is.
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
@@ -419,10 +419,8 @@ impl SceneCollisions<'_, '_> {
        let hi = BlockPos::containing(Vec3::new(max.x + 1.0e-7, max.y + 1.0e-7, max.z + 1.0e-7))
            .offset(1, 1, 1);
        let size = |a: i32, b: i32| i64::from(b) - i64::from(a) + 1;
-        let cells = [size(lo.x, hi.x), size(lo.y, hi.y), size(lo.z, hi.z)]
-            .into_iter()
-            .try_fold(1i64, |n, size| n.checked_mul(size));
-        if lo.x > hi.x || lo.y > hi.y || lo.z > hi.z || cells.is_none_or(|n| n > 4096) {
+        let cells = size(lo.x, hi.x) * size(lo.y, hi.y) * size(lo.z, hi.z);
+        if lo.x > hi.x || lo.y > hi.y || lo.z > hi.z || cells > 4096 {
            return false;
        }
        // A column and section at a time. Most boxes lie in a few sections whose palette says that no
@@ -1113,13 +1111,6 @@ mod section_tests {
            binding: &binding,
            subject: None,
        };
-        // The fast path must decline an enormous volume without overflowing
-        // its size calculation or beginning to walk it.
-        let enormous = Aabb::new(
-            Vec3::new(-1.0e9, -1.0e9, -1.0e9),
-            Vec3::new(1.0e9, 1.0e9, 1.0e9),
-        );
-        assert!(!scene.cells_without_collision(enormous));
        // Under the fence: its section's outer cells may hold a shape reaching in.
        let under = Aabb::new(Vec3::new(5.4, 31.6, 5.4), Vec3::new(5.6, 31.8, 5.6));
        assert!(!scene.cells_without_collision(under.expand_towards(Vec3::new(0.0, 0.1, 0.0))));
@@ -121,8 +121,8 @@ impl CommandBlock {
            condition_met: flag("conditionMet", false),
        }
    }
-    /// `CommandBlockEntity.saveAdditional`. The last output is the component
-    /// itself (`ComponentSerialization.CODEC`), styles and click events kept.
+    /// `CommandBlockEntity.saveAdditional`. The last output is written as a
+    /// plain string component.
    pub fn save(&self) -> Vec<(&'static str, Tag)> {
        let mut out = vec![
            ("Command", Tag::String(self.command.as_str().into())),
@@ -135,7 +135,7 @@ impl CommandBlock {
        if self.track_output
            && let Some(last) = &self.last_output
        {
-            out.push(("LastOutput", scoreboard::component_tag(&last.component())));
+            out.push(("LastOutput", Tag::String(last.plain().as_str().into())));
        }
        out.push((
            "UpdateLastExecution",
@@ -56,8 +56,6 @@ pub struct Overlay {
 struct LoadedRule {
    rule: Rule,
    tiles: Vec<TileLayer>,
-    /// By tile: the rules whose `matchTiles` name it (a range of `lists`), which chain on it.
-    chain: Vec<(u32, u32)>,
    overlay: OverlayJoin,
 }

@@ -126,25 +124,15 @@ fn sprite_name(resource: &str) -> String {
 }

 impl ConnectedTextures {
-    /// The sprites `rules` match by name (`matchTiles`, `connectTiles`), for
-    /// [`Sprites::keep_apart`]: before the models insert theirs.
-    pub fn matched_sprites(rules: &[Rule]) -> Vec<String> {
-        (rules.iter())
-            .flat_map(|r| r.match_tiles.iter().chain(&r.connect_tiles))
-            .map(|t| sprite_name(t))
-            .collect()
-    }
-
-    /// `rules` (`ctm::load` under `root`), with their tiles inserted into `sprites` (before it
-    /// finishes). `face_layer` answers a block state's sprite on a side, for rules that connect
-    /// by tile.
+    /// The rules under `root`, with their tiles inserted into `sprites` (before it finishes).
+    /// `face_layer` answers a block state's sprite on a side, for rules that connect by tile.
    pub fn load(
        root: &Path,
-        mut rules: Vec<Rule>,
        registry: &BlockRegistry,
        sprites: &mut Sprites,
        mut face_layer: impl FnMut(BlockStateId, Face) -> Option<u32>,
    ) -> Self {
+        let mut rules = ctm::load(root);
        // Rules with a custom name load no tiles: section meshes see no block entity.
        rules.retain(|r| r.name.is_none());
        // Rule indices are `u16`.
@@ -190,7 +178,6 @@ impl ConnectedTextures {
                    Ok(tiles) => Some(LoadedRule {
                        rule,
                        tiles,
-                        chain: Vec::new(),
                        overlay: OverlayJoin::default(),
                    }),
                    Err(e) => {
@@ -295,23 +282,10 @@ impl ConnectedTextures {
        let mut by_layer: Vec<Vec<u16>> = Vec::new();
        // Block rules by the block each entry names, so a state tests only its own.
        let mut by_block: HashMap<&str, Vec<u16>> = HashMap::new();
-        // Tile rules by the sprite or tile file each names, for chaining on a picked tile.
-        let mut by_name: HashMap<String, Vec<u16>> = HashMap::new();
        for (i, r) in out.rules.iter().enumerate() {
            let i = i as u16;
            for tile in &r.rule.match_tiles {
-                let name = sprite_name(tile);
-                let list = by_name.entry(name.clone()).or_default();
-                if list.last() != Some(&i) {
-                    list.push(i);
-                }
-                // A tile file (`./1.png`) is no model's sprite: only chaining reaches it, by
-                // name. By layer it would match every face whose sprite has the same pixels
-                // (identical stills share a layer: Conquest's blank placeholders, dozens).
-                if !name.contains(':') {
-                    continue;
-                }
-                if let Some(l) = layer(&name) {
+                if let Some(l) = layer(&sprite_name(tile)) {
                    let l = l as usize;
                    if by_layer.len() <= l {
                        by_layer.resize(l + 1, Vec::new());
@@ -332,26 +306,6 @@ impl ConnectedTextures {
            let range = push_list(&mut out.lists, &list);
            out.by_layer.push(range);
        }
-        let by_name: HashMap<String, (u32, u32)> = by_name
-            .into_iter()
-            .map(|(name, list)| (name, push_list(&mut out.lists, &list)))
-            .collect();
-        // Set at the end: `by_block` borrows the rules' names.
-        let chains: Vec<Vec<(u32, u32)>> = out
-            .rules
-            .iter()
-            .map(|r| {
-                r.rule
-                    .tiles
-                    .iter()
-                    .map(|t| match t {
-                        Tile::Texture(path) => by_name.get(&sprite_name(path)).copied(),
-                        _ => None,
-                    })
-                    .map(Option::unwrap_or_default)
-                    .collect()
-            })
-            .collect();
        let mut list = Vec::new();
        for state in states {
            let Some((name, props)) = state else {
@@ -391,9 +345,6 @@ impl ConnectedTextures {
            let range = push_list(&mut out.lists, &list);
            out.by_state.push(range);
        }
-        for (r, chain) in out.rules.iter_mut().zip(chains) {
-            r.chain = chain;
-        }
        out
    }

@@ -431,11 +382,9 @@ impl ConnectedTextures {
    }

    fn list(&self, ranges: &[(u32, u32)], i: usize) -> &[u16] {
-        ranges.get(i).map_or(&[], |&range| self.range(range))
-    }
-
-    fn range(&self, (start, len): (u32, u32)) -> &[u16] {
-        &self.lists[start as usize..(start + len) as usize]
+        ranges.get(i).map_or(&[], |&(start, len)| {
+            &self.lists[start as usize..(start + len) as usize]
+        })
    }

    /// What the `face` of the block `state` at `pos` draws, for a quad with sprite `layer`.
@@ -482,7 +431,7 @@ impl ConnectedTextures {
            let r = &self.rules[usize::from(i)];
            if (block || r.rule.match_blocks.is_empty())
                && (tile || r.rule.match_tiles.is_empty())
-                && let Some((pick, index)) = self.apply(
+                && let Some(pick) = self.apply(
                    r,
                    state,
                    layer,
@@ -495,7 +444,7 @@ impl ConnectedTextures {
                )
            {
                // "Tiles output by CTM rules can also be matched by another rule": once, by the
-                // tile rules naming the picked tile by name (and this block, if they name blocks).
+                // tile rules naming the picked tile (and this block, if they name blocks).
                // A tile on the face's own sprite (`tiles=stone`) is no new tile.
                let Pick::Tile(TileLayer::Layer { layer: picked, .. }) = pick else {
                    return pick;
@@ -508,7 +457,7 @@ impl ConnectedTextures {
                // again: an overlay would draw twice.
                let first = self.list(&self.by_layer, layer as usize);
                let again = self
-                    .range(r.chain.get(index).copied().unwrap_or_default())
+                    .list(&self.by_layer, picked as usize)
                    .iter()
                    .map(|&j| (j, &self.rules[usize::from(j)]))
                    .filter(|&(j, r)| {
@@ -529,8 +478,8 @@ impl ConnectedTextures {
                        &texture,
                        &mut overlay,
                    ) {
-                        Some((Pick::Keep, _)) => return pick,
-                        Some((chained, _)) => return chained,
+                        Some(Pick::Keep) => return pick,
+                        Some(chained) => return chained,
                        None => {}
                    }
                }
@@ -553,7 +502,7 @@ impl ConnectedTextures {
        biome: &impl Fn() -> Option<&'b str>,
        texture: &impl Fn() -> Option<Axes>,
        overlay: &mut impl FnMut(Overlay),
-    ) -> Option<(Pick, usize)> {
+    ) -> Option<Pick> {
        let rule = &r.rule;
        // `Rule::applies_at`, with the biome looked up only for rules that test one. Rules with
        // a custom name are not loaded.
@@ -643,7 +592,7 @@ impl ConnectedTextures {
                        return if quarters.contains(&TileLayer::Skip) {
                            None
                        } else {
-                            Some((Pick::Quarters(quarters), 0))
+                            Some(Pick::Quarters(quarters))
                        };
                    }
                }
@@ -658,7 +607,7 @@ impl ConnectedTextures {
                    return None;
                }
                if !joins([0, 1, 0]) {
-                    return Some((Pick::Keep, 0));
+                    return Some(Pick::Keep);
                }
                0
            }
@@ -685,8 +634,8 @@ impl ConnectedTextures {
        }
        match tile(index) {
            TileLayer::Skip => None,
-            TileLayer::Default => Some((Pick::Keep, index)),
-            t => Some((Pick::Tile(t), index)),
+            TileLayer::Default => Some(Pick::Keep),
+            t => Some(Pick::Tile(t)),
        }
    }
 }
@@ -716,7 +665,6 @@ mod tests {
            .enumerate()
            .map(|(n, rule)| LoadedRule {
                overlay: OverlayJoin::default(),
-                chain: Vec::new(),
                tiles: rule
                    .tiles
                    .iter()
@@ -764,10 +712,6 @@ mod tests {
                "assets/minecraft/optifine/ctm/b0.png" => Some(2000),
                // And `a0` of the first rule.
                "assets/minecraft/optifine/ctm/a0.png" => Some(1000),
-                // Two blank placeholders with the same pixels, so one layer: the tile `grass/1`
-                // of the third rule (`chaining_follows_the_tile_not_its_pixels`).
-                "assets/minecraft/optifine/ctm/grass/1.png"
-                | "assets/minecraft/optifine/ctm/aaa/1.png" => Some(3000),
                _ => None,
            },
        )
@@ -1222,31 +1166,6 @@ mod tests {
        assert_eq!(pick_in(&ctm, 1, 3, Face::Up, &[]), tile(2000));
    }

-    #[test]
-    fn chaining_follows_the_tile_not_its_pixels() {
-        // Conquest's grass top: a placeholder tile that a rule beside it replaces. Another
-        // folder's placeholder has the same pixels, hence the same layer, and its rule sorts
-        // first; it must not draw on the grass.
-        let ctm = world(&[
-            (
-                "grass/top.properties",
-                "matchTiles=glass\nmethod=fixed\ntiles=1",
-            ),
-            (
-                "grass/random_1.properties",
-                "matchTiles=./1.png\nmethod=fixed\ntiles=17\nfaces=top",
-            ),
-            (
-                "aaa/random_1.properties",
-                "matchTiles=./1.png\nmethod=fixed\ntiles=5\nfaces=top",
-            ),
-        ]);
-        // Rules in path order: aaa/random_1 (1000), grass/random_1 (2000), grass/top (3000).
-        assert_eq!(pick_in(&ctm, 1, 3, Face::Up, &[]), tile(2000));
-        // A face whose own sprite has a placeholder's pixels is no placeholder.
-        assert_eq!(pick_in(&ctm, 2, 3000, Face::Up, &[]), Pick::Keep);
-    }
-
    #[test]
    fn orient_texture_follows_the_quads_uvs() {
        let rule = |orient: &str| {
@@ -1351,41 +1270,6 @@ mod tests {
        assert!(!ctm.stacked_pane_hides(3, 3, post));
    }

-    #[test]
-    fn rules_name_the_sprites_they_match() {
-        // `matchTiles` among the textures and beside the file (a chain onto another rule's
-        // tile), and `connectTiles`: each as the sprite name the textures and tiles are inserted
-        // under.
-        let dir = "assets/minecraft/optifine/ctm/pack/crops";
-        let rule = |file: &str, text: &str| {
-            Rule::parse(
-                &format!("{dir}/{file}"),
-                &horizon_optifine::properties::Properties::parse(text),
-            )
-            .unwrap()
-            .unwrap()
-        };
-        let rules = [
-            rule(
-                "1.properties",
-                "matchTiles=./19.png\nmethod=random\ntiles=5-6",
-            ),
-            rule(
-                "2.properties",
-                "matchTiles=textures/block/extra/placeholder.png\nmethod=overlay\n\
-                 connectTiles=textures/block/stone.png\ntiles=0-16",
-            ),
-        ];
-        assert_eq!(
-            ConnectedTextures::matched_sprites(&rules),
-            [
-                format!("{dir}/19.png"),
-                "minecraft:block/extra/placeholder".to_owned(),
-                "minecraft:block/stone".to_owned(),
-            ]
-        );
-    }
-
    #[test]
    fn sprite_names() {
        assert_eq!(
@@ -57,8 +57,6 @@ pub enum Item {
    /// Wait for a button to bind to this action.
    Bind(&'static str),
    ResetBinds,
-    /// Opens the radial menu's pages (`radial_editor`).
-    Radial,
    Info(Info),
 }

@@ -108,15 +106,6 @@ fn choice_description(opt: Opt, pad: &PadSettings) -> Option<&'static str> {
            }
            gamepad::Lightbar::Off => "A DualSense keeps its own light.",
        },
-        Opt::PadRadialMode => match pad.radial_mode {
-            gamepad::RadialMode::Hold => "horizon.options.radial_mode.hold.about",
-            gamepad::RadialMode::Toggle => "horizon.options.radial_mode.toggle.about",
-        },
-        Opt::PadRadialStick => match pad.radial_stick {
-            gamepad::RadialStick::Right => "horizon.options.radial_stick.right.about",
-            gamepad::RadialStick::Left => "horizon.options.radial_stick.left.about",
-            gamepad::RadialStick::Either => "horizon.options.radial_stick.either.about",
-        },
        _ => return None,
    })
 }
@@ -134,11 +123,6 @@ fn info(info: Info, text: &'static str) -> Setting {
    }
 }

-/// The radial menu's group, on General (how it opens and selects) and Bindings (its pages).
-const RADIAL_GROUP: &str = "Radial Menu";
-/// The row that opens the radial menu's pages.
-const RADIAL_PAGES: &str = "horizon.pages.open.controller_radial";
-
 /// Shown on a binding's row until it is focused, and in the search.
 const BIND_TEXT: &str = "Press this row, then the button that should do it.";

@@ -217,13 +201,6 @@ pub fn rows() -> Vec<(Page, Vec<(&'static str, Vec<Setting>)>)> {
                        ),
                    ],
                ),
-                (
-                    RADIAL_GROUP,
-                    vec![
-                        option(Opt::PadRadialMode, "horizon.options.radial_mode.about"),
-                        option(Opt::PadRadialStick, "horizon.options.radial_stick.about"),
-                    ],
-                ),
                (
                    "Menus",
                    vec![
@@ -254,13 +231,6 @@ pub fn rows() -> Vec<(Page, Vec<(&'static str, Vec<Setting>)>)> {
        (
            Page::Bindings,
            vec![
-                (
-                    RADIAL_GROUP,
-                    vec![Setting {
-                        item: Item::Radial,
-                        text: "Named pages of eight actions, held open with a button.",
-                    }],
-                ),
                ("Actions", binds),
                (
                    "Reset",
@@ -467,7 +437,6 @@ fn row(setting: Setting, s: &Settings, context: &Context) -> Row<Item> {
            Row::new(item, name, value).about(about)
        }
        Item::ResetBinds => Row::new(item, lang::get(RESET_ALL), Value::Press).about(about),
-        Item::Radial => Row::new(item, lang::get(RADIAL_PAGES), Value::Press).about(about),
        Item::Info(which) => {
            let (name, value) = context.read(which);
            Row::new(item, lang::get(name), Value::Read(value)).about(about)
@@ -527,7 +496,6 @@ impl Screen for ControllerScreen {
                s.controller.reset_bindings();
                vec![Output::Event(Event::Changed)]
            }
-            Item::Radial => vec![Output::Push(crate::options_ui::Page::ControllerRadial)],
            Item::Bind(_) | Item::Info(_) => Vec::new(),
        }
    }
@@ -565,21 +533,15 @@ impl Screen for ControllerScreen {
    fn undoes(&self) -> bool {
        true
    }
-    /// This player's controller settings, bindings included, as the screen found them. The
-    /// radial menu's pages stay as they are: their own screen has its own Undo.
+    /// This player's controller settings, bindings included, as the screen found them.
    fn undo(&mut self, s: &mut Settings, before: &Settings) -> Vec<Output> {
-        let radial = std::mem::take(&mut s.controller.radial);
        s.controller = before.controller.clone();
-        s.controller.radial = radial;
        Vec::new()
    }
    /// Undo is there exactly while the controller settings differ from what the screen opened
-    /// with: a binding the game made while the row waited counts, a value stepped back doesn't,
-    /// and nor do the radial menu's pages, which this Undo keeps.
+    /// with: a binding the game made while the row waited counts, a value stepped back doesn't.
    fn differs(&self, s: &Settings, before: &Settings) -> Option<bool> {
-        let mut now = s.controller.clone();
-        now.radial = before.controller.radial.clone();
-        Some(now != before.controller)
+        Some(s.controller != before.controller)
    }
 }

@@ -831,48 +793,6 @@ mod tests {
        assert_eq!(arts(&batch, row), 0);
    }

-    /// The radial menu's pages have their own screen and Undo: editing them shows no Undo here,
-    /// and another change's Undo keeps them as edited.
-    #[test]
-    fn radial_pages_edited_on_their_own_screen_leave_undo_alone() {
-        let mut s = Settings::default();
-        let mut ui = ui(Page::General);
-        draw(&mut ui, &s, None);
-        s.controller.radial.remove(1);
-        draw(&mut ui, &s, None);
-        assert!(
-            !ui.changed(),
-            "Undo here keeps the pages: it has nothing to do"
-        );
-        s.controller.invert_y = !s.controller.invert_y;
-        draw(&mut ui, &s, None);
-        assert!(ui.changed());
-        let reached = (0..100).any(|_| {
-            key(&mut ui, &mut s, K::Tab);
-            ui.focused() == Some(Target::Undo)
-        });
-        assert!(reached);
-        key(&mut ui, &mut s, K::Enter);
-        assert_eq!(s.controller.radial.len(), 1);
-        assert_eq!(s.controller.invert_y, PadSettings::default().invert_y);
-    }
-
-    /// The Bindings page's radial row opens the radial menu's pages.
-    #[test]
-    fn the_radial_row_opens_the_radial_pages() {
-        let mut s = Settings::default();
-        let mut ui = ui(Page::Bindings);
-        let at = ui.point_at(&s, SIZE, Item::Radial);
-        let outputs = ui.click(&mut s, at, SIZE, false, false, false);
-        assert_eq!(
-            outputs,
-            [
-                CLICK,
-                Output::Push(crate::options_ui::Page::ControllerRadial)
-            ]
-        );
-    }
-
    #[test]
    fn the_search_finds_rows_across_pages_and_drops_empty_pages() {
        let s = Settings::default();
@@ -896,8 +816,8 @@ mod tests {
        let mut s = Settings::default();
        s.controller.bind(JUMP, Some(Button::North));
        let mut ui = ui(Page::Bindings);
-        // Search, the three pages, the radial menu's row, then the first action.
-        for _ in 0..Page::ALL.len() + 3 {
+        // Search, the three pages, then the first action.
+        for _ in 0..Page::ALL.len() + 2 {
            key(&mut ui, &mut s, K::Tab);
        }
        assert_eq!(ui.focused(), Some(Target::Row(Item::Bind(JUMP))));
@@ -1019,8 +939,6 @@ mod tests {
            (Opt::PadNintendoButtons, 2),
            (Opt::PadKeyboard, 3),
            (Opt::PadLightbar, 3),
-            (Opt::PadRadialMode, 2),
-            (Opt::PadRadialStick, 3),
        ] {
            let setting = option(opt, "the fixed sentence");
            let mut seen = Vec::new();
@@ -1054,8 +972,6 @@ mod tests {
                Opt::PadNintendoButtons,
                Opt::PadKeyboard,
                Opt::PadLightbar,
-                Opt::PadRadialMode,
-                Opt::PadRadialStick,
            ] {
                for _ in 0..4 {
                    lang::get(choice_description(opt, &settings.controller).unwrap());
@@ -1074,7 +990,6 @@ mod tests {
            }
            ControllerScreen::default().side();
            lang::get(TITLE);
-            lang::get(RADIAL_PAGES);
            for text in [
                "Press the button for this. %s cancels.",
                "This button also does: %s",
@@ -1,603 +0,0 @@
-//! GLSL that vanilla's GL compiler takes and naga's front end doesn't (#9386), rewritten into
-//! what both take:
-//! - a function with `sampler2D` parameters is copied once per set of samplers its callers pass
-//!   (all of them a shader's global samplers), the copy reading those samplers by name;
-//! - an unsized array (`const float[] w = float[](...)`, `float w[] = ...`) takes the size its
-//!   initializer gives.
-
-/// The longest shader rewritten (vanilla's, includes expanded, are a few KiB).
-const MAX_LEN: usize = 64 * 1024;
-
-/// The bytes the rewrite may scan for calls (the whole text per call it rewrites): thousands of
-/// calls leave the text as it was rather than freeze a load.
-const SCAN_BUDGET: usize = 64 << 20;
-
-/// `text` with the rewrites, where they apply; anything they can't follow is left as it was.
-pub(super) fn fixups(text: &str) -> String {
-    if text.len() > MAX_LEN {
-        return text.to_owned();
-    }
-    size_unsized_arrays(&specialize_sampler_params(text))
-}
-
-fn is_ident(c: char) -> bool {
-    c.is_ascii_alphanumeric() || c == '_'
-}
-
-/// A name a sampler can have (`sampler2D ;` gives none, `t[2]` isn't one).
-fn is_name(s: &str) -> bool {
-    s.chars().all(is_ident) && s.starts_with(|c: char| !c.is_ascii_digit()) && s != "sampler2D"
-}
-
-/// The identifier that ends right before byte `end` (whitespace skipped), and where it starts.
-fn ident_before(text: &str, end: usize) -> Option<(usize, &str)> {
-    let trimmed = text[..end].trim_end();
-    let start = trimmed
-        .char_indices()
-        .rev()
-        .take_while(|(_, c)| is_ident(*c))
-        .last()?
-        .0;
-    let ident = &trimmed[start..];
-    (!ident.is_empty() && !ident.starts_with(|c: char| c.is_ascii_digit()))
-        .then_some((start, ident))
-}
-
-/// For each byte of `text`, the byte of the bracket closing the one opening there (counting
-/// that kind of bracket only), or `None`: one pass, so a scan asking for many stays linear.
-fn closings(text: &str) -> Vec<Option<usize>> {
-    let mut out = vec![None; text.len()];
-    let mut open: [Vec<usize>; 3] = Default::default();
-    for (i, b) in text.bytes().enumerate() {
-        let (kind, opens) = match b {
-            b'(' => (0, true),
-            b')' => (0, false),
-            b'[' => (1, true),
-            b']' => (1, false),
-            b'{' => (2, true),
-            b'}' => (2, false),
-            _ => continue,
-        };
-        if opens {
-            open[kind].push(i);
-        } else if let Some(at) = open[kind].pop() {
-            out[at] = Some(i);
-        }
-    }
-    out
-}
-
-/// The comma-separated parts of `list` at its own nesting level.
-fn split_top(list: &str) -> Vec<&str> {
-    let mut parts = Vec::new();
-    let (mut depth, mut start) = (0i32, 0);
-    for (i, c) in list.char_indices() {
-        match c {
-            '(' | '[' | '{' => depth += 1,
-            ')' | ']' | '}' => depth -= 1,
-            ',' if depth == 0 => {
-                parts.push(&list[start..i]);
-                start = i + 1;
-            }
-            _ => {}
-        }
-    }
-    if !list[start..].trim().is_empty() || !parts.is_empty() {
-        parts.push(&list[start..]);
-    }
-    parts
-}
-
-/// A function at the file's top level whose parameters include a `sampler2D`.
-struct SamplerFn {
-    name: String,
-    /// The header from its return type to its `{` (or `;` for a prototype), and the body after.
-    start: usize,
-    end: usize,
-    params: Vec<String>,
-    /// The indices of the `sampler2D` parameters and their names.
-    samplers: Vec<(usize, String)>,
-    /// `None` for a prototype.
-    body: Option<String>,
-    return_type: String,
-}
-
-fn sampler_functions(text: &str) -> Vec<SamplerFn> {
-    let closing = closings(text);
-    let mut out = Vec::new();
-    let mut depth = 0i32;
-    let bytes = text.as_bytes();
-    let mut i = 0;
-    while i < bytes.len() {
-        match bytes[i] {
-            b'{' => depth += 1,
-            b'}' => depth -= 1,
-            b'(' if depth == 0 => {
-                if let (Some((name_at, name)), Some(close)) = (ident_before(text, i), closing[i])
-                    && let Some((type_at, return_type)) = ident_before(text, name_at)
-                {
-                    let params: Vec<String> = split_top(&text[i + 1..close])
-                        .into_iter()
-                        .map(|p| p.trim().to_owned())
-                        .collect();
-                    let samplers: Vec<(usize, String)> = params
-                        .iter()
-                        .enumerate()
-                        .filter(|(_, p)| p.split_whitespace().any(|w| w == "sampler2D"))
-                        .map(|(n, p)| (n, p.split_whitespace().last().unwrap_or("").to_owned()))
-                        .collect();
-                    // One without a name is left for naga to refuse.
-                    if !samplers.iter().all(|(_, name)| is_name(name)) {
-                        i = close + 1;
-                        continue;
-                    }
-                    let after = text[close + 1..].trim_start();
-                    let next = close + 1 + (text[close + 1..].len() - after.len());
-                    if !samplers.is_empty() && (after.starts_with('{') || after.starts_with(';')) {
-                        let (end, body) = if after.starts_with('{') {
-                            let Some(body_end) = closing[next] else {
-                                break;
-                            };
-                            (body_end + 1, Some(text[next..=body_end].to_owned()))
-                        } else {
-                            (next + 1, None)
-                        };
-                        out.push(SamplerFn {
-                            name: name.to_owned(),
-                            start: type_at,
-                            end,
-                            params,
-                            samplers,
-                            body,
-                            return_type: return_type.to_owned(),
-                        });
-                        i = end;
-                        continue;
-                    }
-                }
-                // Any other header: no other one sits in its parentheses.
-                if let Some(close) = closing[i] {
-                    i = close + 1;
-                    continue;
-                }
-            }
-            _ => {}
-        }
-        i += 1;
-    }
-    out
-}
-
-/// The calls to `name` outside `skip` (its own header): each call's span and arguments. The
-/// bytes read are added to `scanned`.
-fn calls<'a>(
-    scanned: &std::cell::Cell<usize>,
-    text: &'a str,
-    name: &str,
-    skip: &[(usize, usize)],
-) -> Vec<(usize, usize, Vec<&'a str>)> {
-    scanned.set(scanned.get() + text.len());
-    let closing = closings(text);
-    let mut out = Vec::new();
-    let mut from = 0;
-    while let Some(found) = text[from..].find(name) {
-        let at = from + found;
-        from = at + name.len();
-        let before = text[..at].chars().next_back();
-        let rest = &text[at + name.len()..];
-        let open = at + name.len() + (rest.len() - rest.trim_start().len());
-        if before.is_some_and(is_ident)
-            || !text[open..].starts_with('(')
-            || skip.iter().any(|(s, e)| (*s..*e).contains(&at))
-        {
-            continue;
-        }
-        let Some(close) = closing[open] else {
-            continue;
-        };
-        scanned.set(scanned.get() + close - open);
-        out.push((at, close + 1, split_top(&text[open + 1..close])));
-    }
-    out
-}
-
-/// Every `from` standing as an identifier on its own, but not a member after a `.` (a
-/// parameter `s` leaves the swizzle `c.s` alone).
-fn replace_ident(text: &str, from: &str, to: &str) -> String {
-    if from.is_empty() {
-        return text.to_owned();
-    }
-    let mut out = String::with_capacity(text.len());
-    let mut done = 0;
-    while let Some(found) = text[done..].find(from) {
-        let at = done + found;
-        // Read in the whole text: a match right after another (`ss`) is part of it.
-        let before = text[..at].trim_end().chars().next_back();
-        let joined = text[..at].chars().next_back().is_some_and(is_ident);
-        let after = text[at + from.len()..].chars().next();
-        out.push_str(&text[done..at]);
-        if joined || before == Some('.') || after.is_some_and(is_ident) {
-            out.push_str(from);
-        } else {
-            out.push_str(to);
-        }
-        done = at + from.len();
-    }
-    out.push_str(&text[done..]);
-    out
-}
-
-/// A body with its sampler parameters reading `chosen`, all at once: a parameter named like
-/// another's sampler (`mix2(sampler2D Sampler0, sampler2D Sampler1)` called with them swapped)
-/// still reads its own.
-fn read_samplers(body: &str, params: &[(usize, String)], chosen: &[String]) -> String {
-    let mut body = body.to_owned();
-    for (n, (_, param)) in params.iter().enumerate() {
-        body = replace_ident(&body, param, &format!("hz_sampler_param_{n}"));
-    }
-    for (n, sampler) in chosen.iter().enumerate().take(params.len()) {
-        body = replace_ident(&body, &format!("hz_sampler_param_{n}"), sampler);
-    }
-    body
-}
-
-/// The byte after `uniform sampler2D <name>;`, where the shader declares that sampler.
-fn sampler_declaration_end(text: &str, name: &str) -> Option<usize> {
-    let mut from = 0;
-    while let Some(found) = text[from..].find("sampler2D") {
-        let at = from + found;
-        from = at + "sampler2D".len();
-        let before = text[..at].trim_end();
-        if !before.ends_with("uniform")
-            || before[..before.len() - 7]
-                .chars()
-                .next_back()
-                .is_some_and(is_ident)
-        {
-            continue;
-        }
-        let rest = &text[from..];
-        let ident = rest.trim_start();
-        let len = ident.chars().take_while(|c| is_ident(*c)).count();
-        if &ident[..len] != name {
-            continue;
-        }
-        let after = ident[len..].trim_start();
-        if after.starts_with(';') {
-            return Some(text.len() - after.len() + 1);
-        }
-    }
-    None
-}
-
-/// The samplers a call passes for `f`'s `sampler2D` parameters, in order.
-fn chosen_samplers(f: &SamplerFn, args: &[&str]) -> Vec<String> {
-    f.samplers
-        .iter()
-        .filter_map(|(n, _)| args.get(*n).map(|a| a.trim().to_owned()))
-        .collect()
-}
-
-/// One pass per function with `sampler2D` parameters, until none is left or one can't be
-/// followed (a caller passes something that is no sampler's name).
-fn specialize_sampler_params(original: &str) -> String {
-    let mut text = original.to_owned();
-    // Bytes scanned for calls so far, against [`SCAN_BUDGET`].
-    let scanned = std::cell::Cell::new(0usize);
-    let spent = || scanned.get() > SCAN_BUDGET;
-    for _ in 0..16 {
-        let functions = sampler_functions(&text);
-        // From the outside in: no call inside another function still to be copied.
-        let inside_another = |f: &SamplerFn, at: usize| {
-            functions
-                .iter()
-                .any(|g| g.name != f.name && g.body.is_some() && (g.start..g.end).contains(&at))
-        };
-        let spans_of = |f: &SamplerFn| -> Vec<(usize, usize)> {
-            functions
-                .iter()
-                .filter(|g| g.name == f.name)
-                .map(|g| (g.start, g.end))
-                .collect()
-        };
-        let Some(f) = functions.iter().find(|f| {
-            f.body.is_some()
-                && !spent()
-                && calls(&scanned, &text, &f.name, &spans_of(f))
-                    .iter()
-                    .all(|(at, ..)| !inside_another(f, *at))
-        }) else {
-            if spent() {
-                break;
-            }
-            // None left to copy.
-            return text;
-        };
-        let spans = spans_of(f);
-        let found = calls(&scanned, &text, &f.name, &spans);
-        // Each call's samplers must be plain names (a global's, or a later pass's parameter).
-        let mut variants: Vec<Vec<String>> = Vec::new();
-        let mut call_starts: Vec<usize> = Vec::new();
-        let mut followable = true;
-        for (at, _, args) in &found {
-            let chosen = chosen_samplers(f, args);
-            if chosen.len() != f.samplers.len() || !chosen.iter().all(|a| is_name(a)) {
-                followable = false;
-                break;
-            }
-            call_starts.push(*at);
-            if !variants.contains(&chosen) {
-                variants.push(chosen);
-            }
-            if variants.len() > 64 {
-                followable = false;
-                break;
-            }
-        }
-        // Overloads (`tap(sampler2D, vec2)` and `tap(sampler2D, vec3)`) each keep their own
-        // body; a call picks its samplers by position, so they must sit at the same places.
-        let same_places = functions.iter().filter(|g| g.name == f.name).all(|g| {
-            g.samplers
-                .iter()
-                .map(|s| s.0)
-                .eq(f.samplers.iter().map(|s| s.0))
-        });
-        if !followable || !same_places || spent() {
-            break;
-        }
-        // A body may call another overload of itself with its own sampler (vanilla's
-        // `sampleNearest` calls the six-argument one): once its sampler parameters read a
-        // sampler, those calls name that copy too, and their sets join the variants.
-        let rewrite_own_calls = |body: &str| -> Option<(String, Vec<Vec<String>>)> {
-            let mut body = body.to_owned();
-            let mut found = Vec::new();
-            let mut starts: Vec<usize> = calls(&scanned, &body, &f.name, &[])
-                .iter()
-                .map(|c| c.0)
-                .collect();
-            starts.sort_unstable_by(|a, b| b.cmp(a));
-            for start in starts {
-                if spent() {
-                    return None;
-                }
-                let (end, chosen, with) = {
-                    let (_, end, args) = calls(&scanned, &body, &f.name, &[])
-                        .into_iter()
-                        .find(|c| c.0 == start)?;
-                    let chosen = chosen_samplers(f, &args);
-                    let rest: Vec<&str> = args
-                        .iter()
-                        .enumerate()
-                        .filter(|(n, _)| !f.samplers.iter().any(|(s, _)| s == n))
-                        .map(|(_, a)| a.trim())
-                        .collect();
-                    let with = format!("{}_hz_{}({})", f.name, chosen.join("_"), rest.join(", "));
-                    (end, chosen, with)
-                };
-                if chosen.len() != f.samplers.len() || !chosen.iter().all(|a| is_name(a)) {
-                    return None;
-                }
-                found.push(chosen);
-                body.replace_range(start..end, &with);
-            }
-            Some((body, found))
-        };
-        let specialize = |g: &SamplerFn, chosen: &[String]| {
-            let body = read_samplers(g.body.as_deref().unwrap_or_default(), &g.samplers, chosen);
-            rewrite_own_calls(&body)
-        };
-        let same: Vec<&SamplerFn> = functions.iter().filter(|g| g.name == f.name).collect();
-        let mut next = 0;
-        while followable && next < variants.len() {
-            let chosen = variants[next].clone();
-            for g in same.iter().filter(|g| g.body.is_some()) {
-                match specialize(g, &chosen) {
-                    Some((_, inner)) => {
-                        for v in inner {
-                            if !variants.contains(&v) {
-                                variants.push(v);
-                            }
-                        }
-                    }
-                    None => followable = false,
-                }
-            }
-            next += 1;
-            followable &= variants.len() <= 64 && !spent();
-        }
-        if !followable {
-            break;
-        }
-        // One copy of an overload per set of samplers its callers pass, keeping its other
-        // parameters; a prototype becomes the copies' prototypes.
-        let signature = |g: &SamplerFn, chosen: &[String]| {
-            let params: Vec<&str> = g
-                .params
-                .iter()
-                .enumerate()
-                .filter(|(n, _)| !g.samplers.iter().any(|(s, _)| s == n))
-                .map(|(_, p)| p.as_str())
-                .collect();
-            format!(
-                "{} {}_hz_{}({})",
-                g.return_type,
-                g.name,
-                chosen.join("_"),
-                params.join(", ")
-            )
-        };
-        let copies_of = |g: &SamplerFn| -> String {
-            variants
-                .iter()
-                .map(|chosen| match &g.body {
-                    Some(_) => {
-                        let body = specialize(g, chosen).map(|(b, _)| b).unwrap_or_default();
-                        format!("{} {body}\n", signature(g, chosen))
-                    }
-                    None => format!("{};\n", signature(g, chosen)),
-                })
-                .collect()
-        };
-        // Rebuild from the back: the calls, then the function's own spans (each prototype and
-        // definition becomes its copies). A call nested in another's arguments starts after it,
-        // so it is rewritten first, and the call around it is read again from the text as it is
-        // then. A copy reads its samplers by name, so definitions above their samplers'
-        // declaration (vanilla's `sample_lightmap.glsl` is included above `uniform sampler2D
-        // Sampler2;`) move after it, together and in their order, as long as no call comes first.
-        let first_call = call_starts.iter().copied().min().unwrap_or(usize::MAX);
-        let declared = variants
-            .iter()
-            .flatten()
-            .filter_map(|s| sampler_declaration_end(&text, s))
-            .max();
-        let mut edits: Vec<(usize, Option<(usize, String)>)> =
-            call_starts.into_iter().map(|at| (at, None)).collect();
-        let (mut moved, mut move_to) = (String::new(), None);
-        for g in &same {
-            match (
-                &g.body,
-                declared.filter(|&end| end > g.start && end <= first_call),
-            ) {
-                (Some(_), Some(end)) => {
-                    edits.push((g.start, Some((g.end, String::new()))));
-                    moved.push_str(&copies_of(g));
-                    move_to = Some(end);
-                }
-                _ => edits.push((g.start, Some((g.end, copies_of(g))))),
-            }
-        }
-        if let Some(end) = move_to {
-            edits.push((end, Some((end, format!("\n{moved}")))));
-        }
-        // Pack text is untrusted: edits that overlap, or off the text, leave it as it was.
-        let mut spans: Vec<(usize, usize)> = edits
-            .iter()
-            .filter_map(|(s, e)| e.as_ref().map(|(end, _)| (*s, *end)))
-            .collect();
-        spans.sort_unstable();
-        if spans.windows(2).any(|w| w[1].0 < w[0].1) {
-            break;
-        }
-        edits.sort_by_key(|(start, _)| std::cmp::Reverse(*start));
-        let mut sound = true;
-        for (start, edit) in edits {
-            let (end, with) = match edit {
-                Some(span) => span,
-                None => {
-                    let found = calls(&scanned, &text, &f.name, &[])
-                        .into_iter()
-                        .find(|c| c.0 == start);
-                    let Some((_, end, args)) = found else {
-                        continue;
-                    };
-                    let rest: Vec<&str> = args
-                        .iter()
-                        .enumerate()
-                        .filter(|(n, _)| !f.samplers.iter().any(|(s, _)| s == n))
-                        .map(|(_, a)| a.trim())
-                        .collect();
-                    let copy = format!("{}_hz_{}", f.name, chosen_samplers(f, &args).join("_"));
-                    (end, format!("{copy}({})", rest.join(", ")))
-                }
-            };
-            if start > end || text.get(start..end).is_none() || spent() {
-                sound = false;
-                break;
-            }
-            text.replace_range(start..end, &with);
-        }
-        if !sound {
-            break;
-        }
-    }
-    // One that couldn't be followed: the shader as written, never half rewritten.
-    original.to_owned()
-}
-
-/// Each array declared without a size that an initializer sizes: `T[] name = T[](a, b)` and
-/// `T name[] = T[](a, b)` (or `T[2](...)`) are written with the size.
-fn size_unsized_arrays(text: &str) -> String {
-    let mut text = text.to_owned();
-    let mut closing = closings(&text);
-    // Each array sized reads the text's brackets again: a few hundred are plenty.
-    let mut left = 256;
-    let mut from = 0;
-    while let Some(found) = text[from..].find('=') {
-        let eq = from + found;
-        from = eq + 1;
-        // `==`, `<=`, `>=`, `!=`, `+=` ... are no initializers.
-        let prev = text[..eq].chars().next_back();
-        let next = text[eq + 1..].chars().next();
-        if matches!(
-            prev,
-            Some('=' | '<' | '>' | '!' | '+' | '-' | '*' | '/' | '%' | '&' | '|' | '^')
-        ) || next == Some('=')
-        {
-            continue;
-        }
-        // The constructor: `T [ n? ] (`.
-        let rest = &text[eq + 1..];
-        let ty_start = eq + 1 + (rest.len() - rest.trim_start().len());
-        let ty_len = text[ty_start..]
-            .chars()
-            .take_while(|c| is_ident(*c))
-            .count();
-        if ty_len == 0 {
-            continue;
-        }
-        let after_ty = &text[ty_start + ty_len..];
-        let bracket = ty_start + ty_len + (after_ty.len() - after_ty.trim_start().len());
-        if !text[bracket..].starts_with('[') {
-            continue;
-        }
-        let Some(bracket_end) = closing[bracket] else {
-            continue;
-        };
-        let after_bracket = &text[bracket_end + 1..];
-        let paren = bracket_end + 1 + (after_bracket.len() - after_bracket.trim_start().len());
-        if !text[paren..].starts_with('(') {
-            continue;
-        }
-        let Some(paren_end) = closing[paren] else {
-            continue;
-        };
-        // The declarator: `name []` or `T [] name`, between the statement's start and `=`.
-        // (Looked for on the line, at most 256 bytes back, so a long line stays linear.)
-        let mut back = eq.saturating_sub(256);
-        while !text.is_char_boundary(back) {
-            back += 1;
-        }
-        let statement_start = text[back..eq]
-            .rfind([';', '{', '}', '\n'])
-            .map_or(back, |i| back + i + 1);
-        let declarator = &text[statement_start..eq];
-        let Some(empty) = declarator.rfind('[') else {
-            continue;
-        };
-        let inside = &declarator[empty + 1..];
-        let Some(close) = inside.find(']') else {
-            continue;
-        };
-        if !inside[..close].trim().is_empty() {
-            continue;
-        }
-        let size = split_top(&text[paren + 1..paren_end]).len().to_string();
-        // Sized in the constructor too, where it isn't.
-        if text[bracket + 1..bracket_end].trim().is_empty() {
-            text.replace_range(bracket + 1..bracket_end, &size);
-        }
-        let at = statement_start + empty + 1;
-        text.replace_range(at..at + close, &size);
-        // The declarator is before `=`, so `=` moved by what its size changed.
-        from = eq + 1 + size.len() - close;
-        closing = closings(&text);
-        left -= 1;
-        if left == 0 {
-            break;
-        }
-    }
-    text
-}
-
-#[cfg(test)]
-mod tests;
@@ -1,291 +0,0 @@
-//! The rewrites on GLSL a pack writes, with the text each gives written out by hand.
-
-use super::*;
-
-#[test]
-fn a_sampler_parameter_becomes_a_copy_per_sampler_passed() {
-    let text = "vec4 blur(sampler2D tex, vec2 uv);\n\
-        vec4 blur(sampler2D tex, vec2 uv) { return texture(tex, uv) + texture(tex, uv * 2.0); }\n\
-        void main() { vec4 a = blur(Sampler0, uv); vec4 b = blur( Sampler1 , uv + 1.0); vec4 c = blur(Sampler0, uv); }\n";
-    let out = specialize_sampler_params(text);
-    assert!(!out.contains("sampler2D"), "{out}");
-    assert!(out.contains(
-        "vec4 blur_hz_Sampler0(vec2 uv) { return texture(Sampler0, uv) + texture(Sampler0, uv * 2.0); }"
-    ));
-    assert!(out.contains("vec4 blur_hz_Sampler1(vec2 uv)"));
-    assert!(out.contains("blur_hz_Sampler0(uv)"));
-    assert!(out.contains("blur_hz_Sampler1(uv + 1.0)"));
-    // One copy per sampler, not per call (and its prototype, from the prototype above).
-    assert_eq!(out.matches("vec4 blur_hz_Sampler0(vec2 uv) {").count(), 1);
-    assert_eq!(out.matches("vec4 blur_hz_Sampler0(vec2 uv);").count(), 1);
-}
-
-#[test]
-fn a_sampler_passed_on_through_another_function_is_followed() {
-    let text = "vec4 inner(sampler2D t, vec2 uv) { return texture(t, uv); }\n\
-        vec4 outer(vec2 uv, sampler2D s) { return inner(s, uv); }\n\
-        void main() { vec4 a = outer(uv, Sampler2); }\n";
-    let out = specialize_sampler_params(text);
-    assert!(!out.contains("sampler2D"), "{out}");
-    assert!(out.contains("outer_hz_Sampler2(uv)"), "{out}");
-    assert!(out.contains("inner_hz_Sampler2(uv)"), "{out}");
-}
-
-/// A call in another call's arguments is rewritten before the call around it, which is
-/// then read again: neither edit lands on the other's old text.
-#[test]
-fn a_call_nested_in_another_calls_arguments_is_rewritten_inside_out() {
-    let text = "vec2 tap(sampler2D s, vec2 uv) { return texture(s, uv).xy; }\n\
-        void main() { vec2 a = tap(Sampler0, tap(Sampler0, uv));\n\
-        vec2 b = tap(   Sampler1   ,   tap(  Sampler0  ,     uv      )   ); }\n";
-    let out = specialize_sampler_params(text);
-    assert!(!out.contains("sampler2D") && !out.contains("tap("), "{out}");
-    assert!(
-        out.contains("vec2 a = tap_hz_Sampler0(tap_hz_Sampler0(uv));"),
-        "{out}"
-    );
-    assert!(
-        out.contains("vec2 b = tap_hz_Sampler1(tap_hz_Sampler0(uv)); }"),
-        "{out}"
-    );
-    assert!(out.contains("vec2 tap_hz_Sampler0(vec2 uv) { return texture(Sampler0, uv).xy; }"));
-    assert!(out.contains("vec2 tap_hz_Sampler1(vec2 uv) { return texture(Sampler1, uv).xy; }"));
-}
-
-/// Overloads that differ past their sampler each keep their own body in their copies.
-#[test]
-fn overloads_with_a_sampler_each_keep_their_own_body() {
-    let text = "vec4 tap(sampler2D s, vec2 p) { return texture(s, p); }\n\
-        vec4 tap(sampler2D s, vec3 p) { return texture(s, p.xy / p.z); }\n\
-        void main() { vec4 a = tap(Sampler0, uv); vec4 b = tap(Sampler0, vec3(uv, 2.0)); }\n";
-    let out = specialize_sampler_params(text);
-    assert!(!out.contains("sampler2D"), "{out}");
-    assert!(
-        out.contains("vec4 tap_hz_Sampler0(vec2 p) { return texture(Sampler0, p); }"),
-        "{out}"
-    );
-    assert!(
-        out.contains("vec4 tap_hz_Sampler0(vec3 p) { return texture(Sampler0, p.xy / p.z); }"),
-        "{out}"
-    );
-    assert_eq!(out.matches("vec4 tap_hz_Sampler0(").count(), 2, "{out}");
-    assert!(out.contains("vec4 a = tap_hz_Sampler0(uv);"), "{out}");
-    assert!(
-        out.contains("vec4 b = tap_hz_Sampler0(vec3(uv, 2.0));"),
-        "{out}"
-    );
-}
-
-/// A copy reads its samplers by name, so it goes after a sampler declared below the helper
-/// (vanilla's world `text.vsh` includes `sample_lightmap.glsl` above `Sampler2`).
-#[test]
-fn a_copy_goes_after_its_samplers_declaration() {
-    let text = "vec4 tap(sampler2D s, vec2 uv) { return texture(s, uv); }\n\
-        uniform sampler2D Sampler2;\n\
-        void main() { vec4 c = tap(Sampler2, vec2(0.5)); }\n";
-    let out = specialize_sampler_params(text);
-    let declared = out
-        .find("uniform sampler2D Sampler2;")
-        .expect("declaration kept");
-    let copy = out
-        .find("vec4 tap_hz_Sampler2(vec2 uv)")
-        .expect("copy written");
-    let call = out
-        .find("tap_hz_Sampler2(vec2(0.5))")
-        .expect("call rewritten");
-    assert!(declared < copy && copy < call, "{out}");
-    assert_eq!(out.matches("tap_hz_Sampler2(vec2 uv)").count(), 1, "{out}");
-    assert!(!out.contains("tap(sampler2D"), "{out}");
-}
-
-/// A pack's text is untrusted: a sampler declared inside the helper itself (and text that
-/// isn't ASCII) gives edits that would overlap, so the shader is left as it is for the
-/// translator to refuse: never a panic, never a half-rewritten shader.
-#[test]
-fn a_sampler_declared_inside_the_helper_never_panics() {
-    let text = "vec4 tap(sampler2D s, vec2 uv) { é uniform sampler2D Sampler0; x return texture(s, uv); ééé }\n\
-        void main() { fragColor = tap(Sampler0, vec2(0.0)); }\n";
-    let out = specialize_sampler_params(text);
-    assert_eq!(out, text);
-}
-
-/// Vanilla's `texture_sampling.glsl` shape: one overload calls the other with its own
-/// sampler. That call is rewritten too, and both copies come after the sampler's declaration
-/// in their own order, the called one first.
-#[test]
-fn an_overload_passing_its_sampler_to_another_is_followed() {
-    let text = "vec4 sampleNearest(sampler2D source, vec2 uv, vec2 pixelSize, vec2 du, vec2 dv, vec2 texelSize) { return texture(source, uv + du + dv); }\n\
-        vec4 sampleNearest(sampler2D source, vec2 uv, vec2 pixelSize) { return sampleNearest(source, uv, pixelSize, dFdx(uv), dFdy(uv), pixelSize); }\n\
-        uniform sampler2D Sampler0;\n\
-        void main() { vec4 c = sampleNearest(Sampler0, uv, px); }\n";
-    let out = specialize_sampler_params(text);
-    assert!(
-        !out.contains("sampleNearest(") && !out.contains("sampler2D source"),
-        "{out}"
-    );
-    let declared = out
-        .find("uniform sampler2D Sampler0;")
-        .expect("declaration");
-    let six = out
-        .find("vec4 sampleNearest_hz_Sampler0(vec2 uv, vec2 pixelSize, vec2 du, vec2 dv, vec2 texelSize)")
-        .expect("six-argument copy");
-    let three = out
-        .find("vec4 sampleNearest_hz_Sampler0(vec2 uv, vec2 pixelSize) { return sampleNearest_hz_Sampler0(uv, pixelSize, dFdx(uv), dFdy(uv), pixelSize); }")
-        .expect("three-argument copy calling the six-argument one");
-    let call = out
-        .find("vec4 c = sampleNearest_hz_Sampler0(uv, px);")
-        .expect("call");
-    assert!(declared < six && six < three && three < call, "{out}");
-}
-
-/// A prototype above `main` with the definition below it becomes the copies' prototypes, so
-/// the call still has a declaration above it.
-#[test]
-fn a_prototype_becomes_the_copies_prototypes() {
-    let text = "uniform sampler2D Sampler0;\n\
-        vec4 tap(sampler2D s, vec2 uv);\n\
-        void main() { vec4 c = tap(Sampler0, uv); }\n\
-        vec4 tap(sampler2D s, vec2 uv) { return texture(s, uv); }\n";
-    let out = specialize_sampler_params(text);
-    let prototype = out
-        .find("vec4 tap_hz_Sampler0(vec2 uv);")
-        .expect("prototype copy");
-    let call = out.find("tap_hz_Sampler0(uv); }").expect("call");
-    let definition = out
-        .find("vec4 tap_hz_Sampler0(vec2 uv) { return texture(Sampler0, uv); }")
-        .expect("definition copy");
-    assert!(prototype < call && call < definition, "{out}");
-}
-
-/// Parameters named like the samplers they are passed, swapped, still read their own; and a
-/// parameter `s` leaves the swizzle `c.s` alone.
-#[test]
-fn sampler_parameters_are_replaced_at_once_and_not_as_members() {
-    let text = "uniform sampler2D Sampler0;\nuniform sampler2D Sampler1;\n\
-        vec4 mix2(sampler2D Sampler0, sampler2D Sampler1, vec2 uv) { return texture(Sampler0, uv) - texture(Sampler1, uv); }\n\
-        vec4 swz(sampler2D s, vec2 uv) { vec4 c = texture(s, uv); return vec4(c.s, c.t, 0.0, 1.0); }\n\
-        void main() { vec4 a = mix2(Sampler1, Sampler0, uv) + swz(Sampler0, uv); }\n";
-    let out = specialize_sampler_params(text);
-    assert!(
-        out.contains("{ return texture(Sampler1, uv) - texture(Sampler0, uv); }"),
-        "{out}"
-    );
-    assert!(
-        out.contains("{ vec4 c = texture(Sampler0, uv); return vec4(c.s, c.t, 0.0, 1.0); }"),
-        "{out}"
-    );
-}
-
-#[test]
-fn a_parameter_matched_twice_in_one_identifier_stays_whole() {
-    assert_eq!(replace_ident("c.ss + ss * s", "s", "t"), "c.ss + ss * t");
-    assert_eq!(replace_ident("brightness(s)", "s", "t"), "brightness(t)");
-}
-
-/// `fsh` translated beside a vertex shader that passes its position on.
-fn translate(fsh: &str) -> Result<crate::core_shader::CoreProgram, String> {
-    let vsh = "#version 330\nin vec3 Position;\nout vec2 texCoord0;\n\
-        void main() {\n    gl_Position = vec4(Position, 1.0);\n    texCoord0 = Position.xy;\n}\n";
-    let glue = crate::core_shader::Glue {
-        inputs: &[("Position", "vec3")],
-        prelude: "layout(location = 0) in vec3 hz_position;",
-        setup: "Position = hz_position;",
-        finish: "",
-        vertex_id: "int(gl_VertexIndex)",
-    };
-    crate::core_shader::translate_core(vsh, fsh, &[], &|_| None, &glue)
-}
-
-/// #9386 end to end: naga refuses a helper taking the sampler it reads, as GLSL vanilla's GL
-/// compiler takes it; the pack's shader translates, the helper a copy reading `Sampler0`.
-#[test]
-fn a_helper_taking_its_sampler_translates() {
-    let fsh = "#version 330\nuniform sampler2D Sampler0;\nin vec2 texCoord0;\nout vec4 fragColor;\n\
-        vec4 tap(sampler2D tex, vec2 at, float w) { return texture(tex, at) * w; }\n\
-        void main() {\n    fragColor = tap(Sampler0, texCoord0, 0.5) + tap(Sampler0, texCoord0 + 0.01, 0.5);\n}\n";
-    let program = translate(fsh).unwrap();
-    let names: Vec<_> = program
-        .fragment
-        .functions
-        .iter()
-        .filter_map(|(_, f)| f.name.as_deref())
-        .collect();
-    assert!(names.contains(&"tap_hz_Sampler0"), "{names:?}");
-    assert!(!names.contains(&"tap"), "{names:?}");
-}
-
-/// A sampler parameter with no name used to hand `replace_ident` an empty name to replace,
-/// which it found at the same place forever, growing the text until the game ran out of memory.
-#[test]
-fn a_sampler_parameter_without_a_name_is_left_as_it_was() {
-    let text = "uniform sampler2D Sampler0;\n\
-        vec4 tap(sampler2D ;, vec2 uv) { return texture(Sampler0, uv); }\n\
-        void main() { vec4 c = tap(Sampler0, uv); }\n";
-    assert_eq!(fixups(text), text);
-    assert_eq!(replace_ident("abc", "", "x"), "abc");
-}
-
-/// Each call rewritten reads the whole text again: thousands of them stop at the scan budget,
-/// the shader left as it was (never half rewritten) instead of freezing the load.
-#[test]
-fn thousands_of_calls_are_left_as_they_were() {
-    let shader = format!(
-        "uniform sampler2D S;\nvec4 t(sampler2D s) {{ return texture(s, vec2(0.0)); }}\n\
-         void main() {{ vec4 c; {}}}\n",
-        "c = t(S);".repeat(5000)
-    );
-    assert_eq!(fixups(&shader), shader);
-    // A few of them are rewritten.
-    let few = shader.replace(&"c = t(S);".repeat(5000), &"c = t(S);".repeat(3));
-    assert_eq!(
-        fixups(&few).matches("c = t_hz_S(").count(),
-        3,
-        "{}",
-        fixups(&few)
-    );
-}
-
-#[test]
-fn unsized_arrays_take_their_initializers_size() {
-    let text = "const float[] w = float[](0.25, 0.5, 0.25);\n\
-        const vec2 offsets[] = vec2[](vec2(1.0, 0.0), vec2(0.0, 1.0));\n\
-        float k[] = float[4](1.0, 2.0, 3.0, 4.0);\n\
-        bool same = a == b;\n";
-    let out = size_unsized_arrays(text);
-    assert!(
-        out.contains("const float[3] w = float[3](0.25, 0.5, 0.25);"),
-        "{out}"
-    );
-    assert!(
-        out.contains("const vec2 offsets[2] = vec2[2](vec2(1.0, 0.0), vec2(0.0, 1.0));"),
-        "{out}"
-    );
-    assert!(
-        out.contains("float k[4] = float[4](1.0, 2.0, 3.0, 4.0);"),
-        "{out}"
-    );
-    assert!(out.contains("bool same = a == b;"));
-}
-
-#[test]
-fn a_wide_character_after_a_sized_array_never_panics() {
-    // Ten values make the size two digits, which moves the `=` two bytes right: the scan
-    // went on from where it used to be, inside the `é`.
-    let text = "float w[]\u{e9}= float[](0.,1.,2.,3.,4.,5.,6.,7.,8.,9.);\n";
-    assert_eq!(
-        size_unsized_arrays(text),
-        "float w[10]\u{e9}= float[10](0.,1.,2.,3.,4.,5.,6.,7.,8.,9.);\n"
-    );
-}
-
-/// #9386 end to end: naga refuses an array sized by its initializer only.
-#[test]
-fn an_array_sized_by_its_initializer_translates() {
-    let fsh = "#version 330\nuniform sampler2D Sampler0;\nin vec2 texCoord0;\nout vec4 fragColor;\n\
-        const float[] weights = float[](0.25, 0.5, 0.25);\n\
-        void main() {\n    vec4 sum = vec4(0.0);\n\
-            for (int i = 0; i < 3; i++) {\n        sum += texture(Sampler0, texCoord0 + float(i) * 0.01) * weights[i];\n    }\n\
-            fragColor = sum;\n}\n";
-    let program = translate(fsh);
-    assert!(program.is_ok(), "{:?}", program.err());
-}
@@ -43,11 +43,6 @@ pub fn enter_native_mod(call: NativeModCall) -> NativeModGuard {
    }
 }

-/// The native mod call this thread is currently inside, if any.
-pub fn current_native_mod() -> Option<NativeModCall> {
-    IN_NATIVE_MOD.with(Cell::get)
-}
-
 /// Puts back the call that `enter_native_mod` found.
 #[must_use]
 pub struct NativeModGuard {
@@ -249,7 +244,7 @@ fn arch_label(build: &str, machine: &str) -> String {
 }

 /// `PRETTY_NAME` of /etc/os-release and the kernel, or the system's own version string.
-pub(crate) fn operating_system() -> String {
+fn operating_system() -> String {
    let arch = arch_label(std::env::consts::ARCH, machine_arch());
    let version = if cfg!(target_os = "linux") {
        let name = read("/etc/os-release").and_then(|t| {
@@ -439,33 +434,20 @@ fn deliver(home: &Path, report: Report) -> Option<PathBuf> {
    }
 }

-/// The report for a hung server tick, written by the watchdog thread (`ServerWatchdog`): the
-/// stack is the server thread's, read from the watchdog (`horizon_threads::stack_dump`), as
-/// vanilla's report carries the server thread's stack; without it, the details say why.
-pub fn report_watchdog(
-    home: &Path,
-    side: &'static str,
-    message: String,
-    server_stack: Result<String, horizon_threads::stack_dump::NoStack>,
-) -> Option<PathBuf> {
-    let mut details = system_details(side);
-    let stack = match server_stack {
-        Ok(stack) => stack_lines(&stack, false),
-        Err(why) => {
-            details.push(("Server thread stack".into(), why.to_string()));
-            String::new()
-        }
-    };
+/// The report for a hung server tick, written by the watchdog thread
+/// (`ServerWatchdog`): the stuck thread's stack is not available to Rust, so
+/// the report carries none.
+pub fn report_watchdog(home: &Path, side: &'static str, message: String) -> Option<PathBuf> {
    deliver(
        home,
        Report {
            time: Local::now(),
            description: "Watching Server".into(),
            error: format!("{message} (Watching Server)"),
-            stack,
+            stack: String::new(),
            thread: thread_name(side),
            side,
-            details,
+            details: system_details(side),
            log: crate::logging::recent_lines(),
        },
    )
@@ -1,34 +1,27 @@
-//! Custom sky layers: skyboxes a pack draws over the vanilla sky, in a format vanilla doesn't read
-//! (OptiFine's), which the platform's pack formats fill ([`crate::pack_hooks`]). The layers'
-//! textures are read once with the pack; each frame the game asks for the layers to draw, their
-//! brightness and rotation ([`SkyLayers::draws`]), and `gfx::custom_sky` draws them over the
-//! vanilla sky. A pack without layers keeps the vanilla sky.
+//! OptiFine custom skies (`horizon_optifine::sky`) as the game draws them: a pack's layers with
+//! their decoded textures, read once with the pack, and each frame's choice of layers, their
+//! brightness and rotation ([`CustomSky::draws`]), which `gfx::custom_sky` draws over the
+//! vanilla sky. A pack without `optifine/sky` gives an empty [`CustomSky`] and the sky stays
+//! vanilla.

 use std::path::Path;
-use std::sync::Arc;

-use glam::Mat4;
+use glam::{Mat4, Vec3};
+use horizon_optifine::sky::{Blend, Conditions, Skies, SkyLayer, Transition};

-/// A layer's texture, RGBA8: the skybox's six faces in a 3x2 grid, bottom, top and south in the
-/// top row, west, north and east below (`gfx::custom_sky`'s faces).
+/// A layer's texture, RGBA8.
 pub struct Image {
    pub width: u32,
    pub height: u32,
    pub rgba: Vec<u8>,
 }

-/// How a layer mixes with what is drawn below it.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum Blend {
-    Add,
-    Subtract,
-    Multiply,
-    Dodge,
-    Burn,
-    Screen,
-    Replace,
-    Overlay,
-    Alpha,
+/// The pack's layers, by world, with one texture per layer (`images[i]` for the `i`th layer
+/// over all worlds, in `worlds` order).
+#[derive(Default)]
+pub struct CustomSky {
+    worlds: Vec<(i32, Vec<SkyLayer>)>,
+    pub images: Vec<Image>,
 }

 /// One layer of a frame: which texture, with which blend, how bright and turned how.
@@ -41,44 +34,62 @@ pub struct Draw {
    pub rotation: Mat4,
 }

-/// The weather of a frame: thunder is a storm's rain, so it is only `Thunder`.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum Weather {
-    Clear,
-    Rain,
-    Thunder,
-}
-
-/// What a frame's layers may depend on.
-#[derive(Clone, Copy, Debug)]
-pub struct Conditions<'a> {
-    /// Ticks of the day, counting the days.
-    pub day_time: i64,
-    pub weather: Weather,
-    /// The biome at the camera, namespaced.
-    pub biome: &'a str,
-    /// The camera's block height.
-    pub y: i32,
-}
-
 /// The eased brightness of each layer, kept by the game between frames.
 #[derive(Default)]
 pub struct State {
-    /// The world the layers were last drawn for.
-    pub world: Option<i32>,
-    /// Each layer's eased visibility, 0 to 1.
-    pub eased: Vec<f32>,
+    world: Option<i32>,
+    eased: Vec<Transition>,
 }

-/// A pack's custom sky layers, by world (`0` the Overworld, `1` the End).
-pub trait SkyLayers: Send + Sync {
-    /// Every layer's texture: [`Draw::image`] indexes it.
-    fn images(&self) -> &[Image];
-    /// Whether `world` has layers.
-    fn has(&self, world: i32) -> bool;
-    /// This frame's layers of `world` into `out` (cleared first), in drawing order, eased by
-    /// `seconds` since the last frame. `sun_turns` is the sun's angle over 360° (`0` at noon).
-    fn draws(
+/// Textures past this many texels in all are left out (a skybox is a few megapixels at most).
+const TEXEL_BUDGET: u64 = 64 << 20;
+
+impl CustomSky {
+    /// The custom skies of the overlay at `root`. A layer whose texture does not decode is
+    /// dropped with a warning.
+    pub fn load(root: &Path) -> Self {
+        let skies = Skies::scan(root);
+        let mut out = Self::default();
+        let mut texels = 0u64;
+        for (world, sky) in skies.worlds {
+            let mut layers = Vec::new();
+            for layer in sky.layers {
+                match crate::hud::decode(&root.join(&layer.source)) {
+                    Ok((width, height, rgba))
+                        if texels + u64::from(width) * u64::from(height) <= TEXEL_BUDGET =>
+                    {
+                        texels += u64::from(width) * u64::from(height);
+                        out.images.push(Image {
+                            width,
+                            height,
+                            rgba,
+                        });
+                        layers.push(layer);
+                    }
+                    Ok(_) => log::warn!("{}: past the custom sky's texture budget", layer.source),
+                    Err(e) => log::warn!("{}: {e:#}", layer.source),
+                }
+            }
+            if !layers.is_empty() {
+                out.worlds.push((world, layers));
+            }
+        }
+        out
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.worlds.is_empty()
+    }
+
+    /// Whether `world` has layers (`0` the Overworld, `1` the End).
+    pub fn has(&self, world: i32) -> bool {
+        self.worlds.iter().any(|(w, _)| *w == world)
+    }
+
+    /// This frame's layers of `world` into `out` (cleared first), in drawing order: those whose
+    /// conditions hold, eased over their `transition` by `seconds` since the last frame, at the
+    /// brightness of their fade times. `sun_turns` is the sun's angle over 360° (`0` at noon).
+    pub fn draws(
        &self,
        world: i32,
        conditions: &Conditions,
@@ -86,30 +97,147 @@ pub trait SkyLayers: Send + Sync {
        seconds: f32,
        state: &mut State,
        out: &mut Vec<Draw>,
-    );
-}
-
-/// No layers: the vanilla sky.
-struct NoLayers;
-
-impl SkyLayers for NoLayers {
-    fn images(&self) -> &[Image] {
-        &[]
-    }
-
-    fn has(&self, _: i32) -> bool {
-        false
-    }
-
-    fn draws(&self, _: i32, _: &Conditions, _: f32, _: f32, s: &mut State, out: &mut Vec<Draw>) {
+    ) {
        out.clear();
-        s.world = None;
+        let mut first = 0;
+        let mut found = None;
+        for (w, layers) in &self.worlds {
+            if *w == world {
+                found = Some(layers);
+                break;
+            }
+            first += layers.len();
+        }
+        let Some(layers) = found else {
+            state.world = None;
+            return;
+        };
+        // A new world (or pack) starts each layer where its conditions put it: no fade in.
+        let snap = state.world != Some(world) || state.eased.len() != layers.len();
+        if snap {
+            state.world = Some(world);
+            state.eased.clear();
+            state.eased.resize(layers.len(), Transition::default());
+        }
+        for (i, (layer, eased)) in layers.iter().zip(&mut state.eased).enumerate() {
+            let target = if layer.shows(conditions) { 1.0 } else { 0.0 };
+            let shown = if snap {
+                eased.value = target;
+                target
+            } else {
+                eased.step(target, seconds, layer.transition)
+            };
+            let brightness = shown * layer.brightness(conditions.day_time);
+            if brightness <= 0.0 {
+                continue;
+            }
+            let turns = layer.turns(conditions.day_time, sun_turns);
+            let rotation = if turns == 0.0 {
+                Mat4::IDENTITY
+            } else {
+                Mat4::from_axis_angle(Vec3::from_array(layer.axis), turns * std::f32::consts::TAU)
+            };
+            out.push(Draw {
+                image: (first + i) as u16,
+                blend: layer.blend,
+                brightness,
+                rotation,
+            });
+        }
    }
 }

-/// The custom sky layers of the overlay at `root`, from the installed pack formats.
-pub fn load(root: &Path) -> Arc<dyn SkyLayers> {
-    crate::pack_hooks::formats()
-        .custom_sky(root)
-        .unwrap_or_else(|| Arc::new(NoLayers))
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use horizon_optifine::sky::Now;
+
+    fn pack(files: &[(&str, &str)]) -> (std::path::PathBuf, CustomSky) {
+        let root = std::env::temp_dir().join(format!(
+            "horizon-custom-sky-{}-{}",
+            std::process::id(),
+            files.len()
+        ));
+        let _ = std::fs::remove_dir_all(&root);
+        let dir = root.join("assets/minecraft/optifine/sky/world0");
+        std::fs::create_dir_all(&dir).unwrap();
+        let png = {
+            let mut bytes = Vec::new();
+            let mut encoder = png::Encoder::new(&mut bytes, 6, 4);
+            encoder.set_color(png::ColorType::Rgba);
+            encoder.set_depth(png::BitDepth::Eight);
+            let mut writer = encoder.write_header().unwrap();
+            writer
+                .write_image_data(&[255, 0, 0, 255].repeat(24))
+                .unwrap();
+            writer.finish().unwrap();
+            bytes
+        };
+        for (name, text) in files {
+            std::fs::write(dir.join(format!("{name}.properties")), text).unwrap();
+            std::fs::write(dir.join(format!("{name}.png")), &png).unwrap();
+        }
+        let sky = CustomSky::load(&root);
+        (root, sky)
+    }
+
+    fn noon(biome: &str) -> Conditions<'_> {
+        Conditions {
+            day_time: 6000,
+            weather: Now::Clear,
+            biome,
+            y: 64,
+        }
+    }
+
+    #[test]
+    fn layers_ease_in_at_a_biome_border_but_not_on_arrival() {
+        let (root, sky) = pack(&[
+            ("sky1", "biomes=desert\ntransition=2"),
+            ("sky2", "blend=alpha\nrotate=false"),
+        ]);
+        let _ = std::fs::remove_dir_all(root);
+        assert!(sky.has(0) && !sky.has(1));
+        assert_eq!(sky.images[0].width, 6);
+        let (mut state, mut out) = (State::default(), Vec::new());
+        sky.draws(
+            0,
+            &noon("minecraft:desert"),
+            0.0,
+            0.05,
+            &mut state,
+            &mut out,
+        );
+        assert_eq!(
+            out.iter().map(|d| d.brightness).collect::<Vec<_>>(),
+            [1.0, 1.0]
+        );
+        // Out of the desert: the first layer fades over its two seconds.
+        sky.draws(0, &noon("minecraft:plains"), 0.0, 0.5, &mut state, &mut out);
+        assert_eq!(out[0].brightness, 0.75);
+        assert_eq!(out[1].blend, Blend::Alpha);
+        sky.draws(0, &noon("minecraft:plains"), 0.0, 2.0, &mut state, &mut out);
+        assert_eq!(out.len(), 1, "a dark layer is not drawn");
+        assert_eq!(out[0].image, 1);
+        // Into the End, which has no layers, and back: no fade.
+        sky.draws(1, &noon("minecraft:desert"), 0.0, 0.0, &mut state, &mut out);
+        assert!(out.is_empty());
+        sky.draws(0, &noon("minecraft:desert"), 0.0, 0.0, &mut state, &mut out);
+        assert_eq!(out.len(), 2);
+    }
+
+    #[test]
+    fn a_layer_turns_west_like_the_sun() {
+        let (root, sky) = pack(&[("sky1", "")]);
+        let _ = std::fs::remove_dir_all(root);
+        let (mut state, mut out) = (State::default(), Vec::new());
+        // A quarter turn after noon (sunset): the skybox's zenith has gone down to the west.
+        let c = Conditions {
+            day_time: 12000,
+            ..noon("minecraft:plains")
+        };
+        sky.draws(0, &c, 0.25, 0.0, &mut state, &mut out);
+        let up = out[0].rotation.transform_vector3(Vec3::Y);
+        assert!((up - Vec3::NEG_X).length() < 1e-5, "{up}");
+    }
 }
@@ -1,7 +1,6 @@
 //! Data packs (`<world>/datapacks`: folders and zips with `pack.mcmeta`) and
 //! the parts of them commands use: `.mcfunction` functions (with macros and
 //! line continuation), function tags and predicates.
-mod slot_sources;
 use crate::zip::Zip;
 use horizon_world::{
    nbt::Tag,
@@ -664,8 +663,6 @@ pub struct DataStore {
    pub item_modifiers: BTreeMap<String, serde_json::Value>,
    /// `slot_source` definitions, evaluated against a command's live accessor.
    pub slot_sources: BTreeMap<String, serde_json::Value>,
-    /// Slot-source tags belong to the same loaded snapshot as their definitions.
-    pub slot_source_tags: BTreeMap<String, Vec<(String, bool)>>,
    /// The content tables' raw files from the packs after the built-in one:
    /// `recipe/`, `recipe_filter/`, `loot_table/`, `advancement/`, `dialog/`, `damage_type/`, `data_maps/`, `enchantment/` and `tags/…/` files, by
    /// `<kind-dir>/<ns>:<path>`, each id's files in pack order. The tables
@@ -762,16 +759,6 @@ impl DataStore {
                    && let Ok(v) = serde_json::from_slice(&bytes)
                {
                    s.item_modifiers.insert(id, v);
-                } else if let Some(id) = resource_id(&f, "tags/slot_source", ".json")
-                    && let Some(bytes) = pack.read(&f)
-                    && let Ok(v) = serde_json::from_slice::<serde_json::Value>(&bytes)
-                {
-                    let entries = tag_entries(&v);
-                    let slot = s.slot_source_tags.entry(id).or_default();
-                    if v["replace"].as_bool() == Some(true) {
-                        slot.clear();
-                    }
-                    slot.extend(entries);
                } else if let Some(id) = resource_id(&f, "slot_source", ".json")
                    && let Some(bytes) = pack.read(&f)
                    && let Ok(v) = serde_json::from_slice(&bytes)
@@ -1,86 +0,0 @@
-//! Slot-source holder-set tags share DataStore's pack ordering and snapshot.
-use super::DataStore;
-use std::collections::BTreeSet;
-impl DataStore {
-    /// TagLoader's required-member validation and first-seen membership order.
-    pub fn slot_source_tag(&self, id: &str) -> Result<Vec<String>, String> {
-        fn visit(
-            store: &DataStore,
-            id: &str,
-            active: &mut BTreeSet<String>,
-        ) -> Result<Vec<String>, String> {
-            if !active.insert(id.to_owned()) {
-                return Err(format!("Recursive slot-source tag #{id}"));
-            }
-            let result = (|| {
-                let entries = store
-                    .slot_source_tags
-                    .get(id)
-                    .ok_or_else(|| format!("Unknown slot-source tag #{id}"))?;
-                let mut out = Vec::new();
-                for (entry, required) in entries {
-                    let values = if let Some(tag) = entry.strip_prefix('#') {
-                        visit(store, tag, active)
-                    } else if store.slot_sources.contains_key(entry) {
-                        Ok(vec![entry.clone()])
-                    } else {
-                        Err(format!("Unknown slot source {entry}"))
-                    };
-                    match values {
-                        Ok(values) => {
-                            for value in values {
-                                if !out.contains(&value) {
-                                    out.push(value);
-                                }
-                            }
-                        }
-                        Err(error) if *required => return Err(error),
-                        Err(_) => {}
-                    }
-                }
-                Ok(out)
-            })();
-            active.remove(id);
-            result
-        }
-        visit(self, id, &mut BTreeSet::new())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    #[test]
-    fn holder_set_tags_keep_order_required_members_and_snapshot_authority() {
-        let mut store = DataStore::default();
-        for name in ["t:a", "t:b"] {
-            store.slot_sources.insert(
-                name.into(),
-                serde_json::json!({"type":"slot_range","slots":"container.0"}),
-            );
-        }
-        store.slot_source_tags.insert(
-            "t:child".into(),
-            vec![("t:b".into(), true), ("t:a".into(), true)],
-        );
-        store.slot_source_tags.insert(
-            "t:all".into(),
-            vec![
-                ("t:a".into(), true),
-                ("#t:child".into(), true),
-                ("t:absent".into(), false),
-            ],
-        );
-        assert_eq!(store.slot_source_tag("t:all").unwrap(), ["t:a", "t:b"]);
-        store
-            .slot_source_tags
-            .get_mut("t:all")
-            .unwrap()
-            .push(("t:absent".into(), true));
-        assert!(store.slot_source_tag("t:all").is_err());
-        store
-            .slot_source_tags
-            .insert("t:cycle".into(), vec![("#t:cycle".into(), true)]);
-        assert!(store.slot_source_tag("t:cycle").is_err());
-    }
-}
@@ -1,241 +0,0 @@
-//! Dynamic Resolution: the world's resolution scale follows the GPU's frame time toward a target
-//! frame rate, between the Resolution Scale setting (the floor) and 100%.
-//!
-//! The setting is the lowest scale the player accepts; where the GPU has room for more, the
-//! scale rises toward 100% a step at a time, and falls back toward the floor where frames take
-//! longer than the target allows. A verdict is the median GPU time of a window of frames, which
-//! a few slow frames (a chunk load) don't move, and a step up is taken only when the frame would
-//! still fit if its cost grew with the pixels: most of a frame doesn't, so it errs toward
-//! staying.
-//!
-//! Each change has a price: new render targets, and history that starts over (TAA, and a
-//! shader pack's own: its denoised light, reflections and accumulation). So a shader pack gets
-//! the gentle pace (long windows, big steps, a long rest after each change): walking from a
-//! heavy scene to a light one changes the scale once, not every few frames. Without a pack the
-//! quick pace follows the scene within a second.
-//!
-//! Nothing here draws or reads the GPU: the caller feeds it the frames and applies the scale it
-//! answers.
-
-/// How fast the scale follows the frame.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum Pace {
-    /// A shader pack: its history is expensive to start over.
-    Gentle,
-    /// Horizon's own renderer.
-    Quick,
-}
-
-impl Pace {
-    /// Milliseconds of frames in one verdict.
-    fn window_ms(self) -> f64 {
-        match self {
-            Pace::Gentle => 3_000.0,
-            Pace::Quick => 500.0,
-        }
-    }
-    /// Milliseconds of frames after a change before the next verdict counts, while the new
-    /// targets and the restarted history settle.
-    fn settle_ms(self) -> f64 {
-        match self {
-            Pace::Gentle => 8_000.0,
-            Pace::Quick => 1_000.0,
-        }
-    }
-    /// Percentage points per change.
-    fn step(self) -> u32 {
-        match self {
-            Pace::Gentle => 10,
-            Pace::Quick => 5,
-        }
-    }
-}
-
-/// The frame is too slow when its GPU time passes the target's frame time by this share.
-const DOWN_ABOVE: f32 = 1.05;
-/// A step up is taken when the frame, its cost grown with the pixels, stays under this share.
-const UP_BELOW: f32 = 0.95;
-/// Timed frames a window needs for a verdict (a GPU without timestamps gives none).
-const MIN_TIMED: usize = 8;
-
-/// The scale in use and what it has measured since the last verdict.
-#[derive(Clone, Debug, Default)]
-pub struct DynamicResolution {
-    gpu: Vec<f32>,
-    window_ms: f64,
-    since_change_ms: f64,
-    /// The scale in use, in percent; `None` until the first change (the floor).
-    scale: Option<u32>,
-}
-
-impl DynamicResolution {
-    pub fn new() -> Self {
-        Self::default()
-    }
-
-    /// Back to the floor, with nothing measured (turned off, or the world changed).
-    pub fn reset(&mut self) {
-        *self = Self::new();
-    }
-
-    /// The scale in use, in percent, for a Resolution Scale of `floor`: never below it, never
-    /// above 100% unless the floor itself is (then it is the floor).
-    pub fn scale(&self, floor: u32) -> u32 {
-        self.scale.unwrap_or(floor).clamp(floor, floor.max(100))
-    }
-
-    /// One frame: its GPU time where its timestamps have arrived, and its whole time, in
-    /// milliseconds. Answers the new scale, in percent, when this frame completed a window that
-    /// changed it.
-    pub fn observe(
-        &mut self,
-        gpu_ms: Option<f32>,
-        frame_ms: f32,
-        floor: u32,
-        target_fps: u32,
-        pace: Pace,
-    ) -> Option<u32> {
-        self.window_ms += f64::from(frame_ms);
-        self.since_change_ms += f64::from(frame_ms);
-        if let Some(gpu) = gpu_ms {
-            self.gpu.push(gpu);
-        }
-        // A window lasts its time and holds enough timed frames: a slow scene (or timestamps that
-        // arrive with gaps) keeps gathering past the time rather than starting over with too few,
-        // which would never judge the scenes that most need a lower scale. A GPU that can't be
-        // timed gathers nothing and so leaves the scale alone.
-        if self.window_ms < pace.window_ms() || self.gpu.len() < MIN_TIMED {
-            return None;
-        }
-        self.window_ms = 0.0;
-        let timed = std::mem::take(&mut self.gpu);
-        // At or above 100% there is nothing to vary; a change still settling isn't judged yet.
-        if floor >= 100 || self.since_change_ms < pace.settle_ms() {
-            return None;
-        }
-        let gpu = median(timed);
-        let target = 1000.0 / target_fps.max(1) as f32;
-        let now = self.scale(floor);
-        let next = if gpu > target * DOWN_ABOVE && now > floor {
-            now.saturating_sub(pace.step()).max(floor)
-        } else if now < 100 {
-            let up = (now + pace.step()).min(100);
-            let grown = (up as f32 / now as f32).powi(2);
-            if gpu * grown < target * UP_BELOW {
-                up
-            } else {
-                now
-            }
-        } else {
-            now
-        };
-        if next == now {
-            return None;
-        }
-        self.scale = Some(next);
-        self.since_change_ms = 0.0;
-        Some(next)
-    }
-}
-
-fn median(mut values: Vec<f32>) -> f32 {
-    values.sort_by(f32::total_cmp);
-    values[values.len() / 2]
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    /// `ms` milliseconds of frames, each `gpu` long on the GPU and `frame` long in all; the last
-    /// answer.
-    fn run(
-        d: &mut DynamicResolution,
-        ms: f64,
-        gpu: f32,
-        frame: f32,
-        floor: u32,
-        pace: Pace,
-    ) -> Option<u32> {
-        let mut answer = None;
-        let mut t = 0.0;
-        while t < ms {
-            if let Some(scale) = d.observe(Some(gpu), frame, floor, 60, pace) {
-                answer = Some(scale);
-            }
-            t += f64::from(frame);
-        }
-        answer
-    }
-
-    #[test]
-    fn it_starts_at_the_floor_and_climbs_while_there_is_room() {
-        let mut d = DynamicResolution::new();
-        assert_eq!(d.scale(70), 70);
-        // 8 ms of a 16.7 ms budget: room to grow, one step per window and settle.
-        assert_eq!(run(&mut d, 1_200.0, 8.0, 8.0, 70, Pace::Quick), Some(75));
-        assert_eq!(run(&mut d, 30_000.0, 8.0, 8.0, 70, Pace::Quick), Some(100));
-        assert_eq!(d.scale(70), 100);
-    }
-
-    #[test]
-    fn a_slow_frame_steps_down_but_never_below_the_floor() {
-        let mut d = DynamicResolution::new();
-        run(&mut d, 30_000.0, 8.0, 8.0, 70, Pace::Quick);
-        assert_eq!(d.scale(70), 100);
-        // 25 ms against 16.7: down a step at a time, to the floor and no further.
-        run(&mut d, 60_000.0, 25.0, 25.0, 70, Pace::Quick);
-        assert_eq!(d.scale(70), 70);
-    }
-
-    #[test]
-    fn a_slow_scene_still_steps_down() {
-        let mut d = DynamicResolution::new();
-        run(&mut d, 30_000.0, 8.0, 8.0, 70, Pace::Quick);
-        assert_eq!(d.scale(70), 100);
-        // 10 FPS: five frames in a 500 ms window, fewer than a verdict needs; the window keeps
-        // gathering until it has them.
-        run(&mut d, 60_000.0, 100.0, 100.0, 70, Pace::Quick);
-        assert_eq!(d.scale(70), 70);
-    }
-
-    #[test]
-    fn a_frame_near_the_target_stays_put() {
-        let mut d = DynamicResolution::new();
-        // 15 ms: under the target, but a step up (75 -> 80%) would make it 17 ms.
-        assert_eq!(run(&mut d, 60_000.0, 15.0, 16.0, 75, Pace::Quick), None);
-        assert_eq!(d.scale(75), 75);
-    }
-
-    #[test]
-    fn the_gentle_pace_takes_big_steps_and_long_rests() {
-        let mut d = DynamicResolution::new();
-        // The first window (3 s) can't count yet: a change rests 8 s, and the first counts
-        // from the start.
-        assert_eq!(run(&mut d, 7_000.0, 8.0, 8.0, 70, Pace::Gentle), None);
-        assert_eq!(run(&mut d, 3_000.0, 8.0, 8.0, 70, Pace::Gentle), Some(80));
-        // Then nothing for the 8 s rest.
-        assert_eq!(run(&mut d, 7_000.0, 8.0, 8.0, 70, Pace::Gentle), None);
-        assert_eq!(d.scale(70), 80);
-    }
-
-    #[test]
-    fn nothing_changes_at_or_above_100_or_without_gpu_times() {
-        let mut d = DynamicResolution::new();
-        assert_eq!(run(&mut d, 30_000.0, 30.0, 30.0, 100, Pace::Quick), None);
-        assert_eq!(d.scale(120), 120);
-        let mut d = DynamicResolution::new();
-        for _ in 0..1_000 {
-            assert_eq!(d.observe(None, 8.0, 70, 60, Pace::Quick), None);
-        }
-        assert_eq!(d.scale(70), 70);
-    }
-
-    #[test]
-    fn reset_goes_back_to_the_floor() {
-        let mut d = DynamicResolution::new();
-        run(&mut d, 30_000.0, 8.0, 8.0, 70, Pace::Quick);
-        d.reset();
-        assert_eq!(d.scale(70), 70);
-    }
-}
@@ -36,7 +36,7 @@ struct Globals {
    // w: apply the no-pack HDR gain; HDR_WRITE_LIGHT independently keeps float alpha as coverage.
    hdr_light: vec4<f32>,
    hdr_settings: vec4<f32>,
-    hdr_gains: vec4<f32>,
+    hdr_shares: vec4<f32>,
 }
@group(0) @binding(0) var<uniform> globals: Globals;
@group(0) @binding(1) var atlas: texture_2d<f32>;
@@ -155,8 +155,7 @@ fn entity_vertex(position: vec3<f32>, uv: vec2<f32>,
    var back = c;
    // Normal w: 0 keeps the baked colour, +-127 shades by the normal, and a small positive 1
    // keeps the baked colour but culls back faces (entitySolid models such as the decorated pot).
-    // -126/127 shades like -127 and also culls (entityCutoutCull models such as the bat, and the
-    // entitySolid decorated pot).
+    // -126/127 shades like -127 and also culls (entityCutoutCull models such as the bat).
    out.cull = select(0u, 1u, (normal.w > 0.0 && normal.w < 0.5) || (normal.w < 0.0 && normal.w > -0.996));
    if abs(normal.w) >= 0.5 {
        c = vec4(c.rgb * entity_light(normal.xyz, globals.time.y != 0.0), c.a);
@@ -292,17 +291,12 @@ fn entity_written_color(in: Out, color: vec4<f32>) -> vec4<f32> {
    if HDR_WRITE_LIGHT && globals.hdr_light.w != 0.0 && in.overlay != 11u && in.overlay != 12u {
        var mark = hdr_entity_mark(in);
        if in.overlay == 4u { mark = hdr_scene_alpha(globals.hdr_light.y); }
-        return vec4(hdr_written(color.rgb, mark, globals.hdr_settings, globals.hdr_gains), color.a);
+        return vec4(hdr_written(color.rgb, mark, globals.hdr_settings, globals.hdr_shares), color.a);
    }
-    if FRAME_LINEAR && (in.overlay == 11u || in.overlay == 12u) {
-        // The cracks scale what is under them by twice their colour (CRUMBLING_BLEND). Vanilla's
-        // product is in gamma, so under light it is (2c)^2.2: they give half of that.
-        return vec4(pow(2.0 * max(color.rgb, vec3(0.0)), vec3(2.2)) * 0.5, color.a);
-    }
-    return frame_stored(color);
+    return color;
 }
@fragment fn fs_entity_unmarked(in: Out, @builtin(front_facing) front: bool) -> @location(0) vec4<f32> {
-    return frame_stored(entity_color(in, front));
+    return entity_color(in, front);
 }
 fn entity_color(in: Out, front: bool) -> vec4<f32> {
    var uv = in.uv;
@@ -360,7 +354,7 @@ fn entity_color(in: Out, front: bool) -> vec4<f32> {
 // rendertype_entity_shadow.fsh: the shadow texture times the vertex colour,
 // then fog, with no alpha cutout, so a faint shadow in dim light still draws.
@fragment fn fs_entity_shadow(in: Out) -> @location(0) vec4<f32> {
-    return frame_stored(shadow_color(in));
+    return shadow_color(in);
 }
 fn shadow_color(in: Out) -> vec4<f32> {
    var color = textureSample(atlas, atlas_sampler, in.uv) * in.color;
@@ -451,9 +445,9 @@ fn celestial_color(in: Out) -> vec4<f32> {
@fragment fn fs_celestial(in: Out) -> @location(0) vec4<f32> {
    let color = celestial_color(in);
    if HDR_WRITE_LIGHT && globals.hdr_light.w != 0.0 {
-        return vec4(hdr_written(color.rgb, hdr_entity_mark(in), globals.hdr_settings, globals.hdr_gains), color.a);
+        return vec4(hdr_written(color.rgb, hdr_entity_mark(in), globals.hdr_settings, globals.hdr_shares), color.a);
    }
-    return frame_stored(color);
+    return color;
 }

 // The sky's celestial pass (sun, moon, the End sky): fs_celestial's light,
@@ -472,10 +466,9 @@ fn celestial_color(in: Out) -> vec4<f32> {
    // or it would come out darker than the sky around it.
    let full = y >= globals.hdr_windows[1][clamp(tier, 1u, 4u) - 1u];
    if HDR_WRITE_LIGHT && globals.hdr_light.w != 0.0 {
-        return vec4(hdr_written(added, select(1.0, hdr_mark(tier, y), full), globals.hdr_settings, globals.hdr_gains), color.a);
+        return vec4(hdr_written(added, select(1.0, hdr_mark(tier, y), full), globals.hdr_settings, globals.hdr_shares), color.a);
    }
-    // Premultiplied after the decode: the light the texel adds, at its coverage.
-    if HDR_WRITE_LIGHT { return vec4(frame_stored(color).rgb * color.a, color.a); }
+    if HDR_WRITE_LIGHT { return vec4(added, color.a); }
    if !full { return vec4(added, 0.0); }
    return vec4(added, 1.0 - hdr_mark(tier, y));
 }
@@ -498,7 +491,7 @@ fn energy_swirl_fog(in: Out) -> f32 {
 }
@fragment fn fs_energy_swirl(in: Out) -> @location(0) vec4<f32> {
    let color = energy_swirl_base(in);
-    return frame_stored(vec4(mix(color.rgb, globals.fog_color.rgb, energy_swirl_fog(in)), color.a));
+    return vec4(mix(color.rgb, globals.fog_color.rgb, energy_swirl_fog(in)), color.a);
 }

 // RenderPipelines.WATER_MASK: depth only (the pipeline masks the colour off).
@@ -627,7 +620,7 @@ struct WeatherTime { values: vec4<f32> }
    return out;
 }
@fragment fn fs_weather(in: Out) -> @location(0) vec4<f32> {
-    return frame_stored(weather_color(in));
+    return weather_color(in);
 }
 fn weather_color(in: Out) -> vec4<f32> {
    // Repeat within this sprite, never across the atlas. The atlas uses nearest
@@ -12,8 +12,6 @@ use std::collections::HashMap;
 use std::path::Path;
 use std::sync::{Arc, RwLock};

-mod noise;
-
 pub struct Environment {
    system: System,
    /// What the packs' expressions read; the frame sets it before sampling.
@@ -307,9 +305,6 @@ pub(crate) struct Colormap {
    /// (`temperature`, `downfall`, `biome_id`) blend: Polytone 6.8.6's water by `biome_id`
    /// fades over a biome edge.
    pub(crate) biome_blend: bool,
-    /// Its axes read nothing that changes up a column of one biome (no `o.y`): a section of
-    /// one biome can sample it once per column.
-    pub(crate) column: bool,
    width: u32,
    height: u32,
    rgba: Vec<u8>,
@@ -328,18 +323,6 @@ enum Axis {
 }

 impl Axis {
-    /// Whether the axis reads only what stays the same up a column of one biome.
-    fn column(&self) -> bool {
-        use horizon_polytone::expr::Root;
-        let flat = |root: Root, name: &str| match root {
-            Root::Object => matches!(name, "x" | "z" | "biome" | "temperature" | "downfall"),
-            Root::Random => name == "noise",
-            _ => false,
-        };
-        match self {
-            Self::Expr(program) | Self::BiomeId(_, program) => program.reads_only(&flat),
-        }
-    }
    fn value(&self, host: &mut dyn horizon_polytone::expr::Host) -> Option<f64> {
        match self {
            Self::Expr(program) => Some(program.eval(host).ok()?.num()),
@@ -390,23 +373,6 @@ fn biome_id_mapper(pack_root: &Path, json: &Json) -> HashMap<String, f64> {
 }

 impl Colormap {
-    /// One colour wherever it samples (a `biome_colors` flat colour, RGB).
-    pub(crate) fn flat(rgb: u32) -> Self {
-        let zero = || Axis::Expr(horizon_polytone::expr::Program::compile("0").expect("a number"));
-        let [_, r, g, b] = rgb.to_be_bytes();
-        Self {
-            x: zero(),
-            y: zero(),
-            triangular: false,
-            rounds: true,
-            biome_blend: false,
-            column: true,
-            width: 1,
-            height: 1,
-            rgba: vec![r, g, b, 255],
-        }
-    }
-
    /// `assets/<namespace>/polytone/colormaps/<path>.png` and its optional `.json` (without
    /// one, the axes are the biome's temperature and downfall).
    pub(crate) fn load(pack_root: &Path, id: &str) -> Option<Self> {
@@ -458,11 +424,9 @@ impl Colormap {
            axis("x_axis", "o.temperature")?,
            axis("y_axis", "o.downfall")?,
        );
-        let column = [&x, &y].iter().all(|axis| axis.column());
        Some(Self {
            x,
            y,
-            column,
            biome_blend: json["biome_blend"].as_bool().unwrap_or(by_biome),
            triangular: json["triangular"].as_bool() == Some(true),
            rounds: json["rounds"].as_bool() != Some(false),
@@ -561,31 +525,16 @@ impl<'a> BlockHost<'a> {
    }
 }

-/// The noise `r.noise(x, y)` reads, the same for blocks and particles.
-pub(crate) fn polytone_noise() -> &'static noise::PerlinSimplex {
-    noise::builtin()
+/// The simplex noise `r.noise(x, y)` reads, the same for blocks and particles.
+pub(crate) fn polytone_noise() -> &'static horizon_core::noise::SimplexNoise {
+    static NOISE: std::sync::OnceLock<horizon_core::noise::SimplexNoise> =
+        std::sync::OnceLock::new();
+    NOISE.get_or_init(|| {
+        horizon_core::noise::SimplexNoise::new(&mut horizon_core::random::LegacyRandom::new(0))
+    })
 }

 impl horizon_polytone::expr::Host for BlockHost<'_> {
-    fn field(
-        &mut self,
-        root: horizon_polytone::expr::Root,
-        field: horizon_polytone::expr::Field,
-    ) -> Option<horizon_polytone::expr::Value> {
-        use horizon_polytone::expr::Field as F;
-        if root != horizon_polytone::expr::Root::Object {
-            return None;
-        }
-        Some(horizon_polytone::expr::Value::Num(match field {
-            F::X => f64::from(self.at[0]),
-            F::Y => f64::from(self.at[1]),
-            F::Z => f64::from(self.at[2]),
-            F::Temperature => f64::from(self.biome.temperature),
-            F::Downfall => f64::from(self.biome.downfall),
-            _ => return None,
-        }))
-    }
-
    fn root(&mut self, root: horizon_polytone::expr::Root) -> horizon_polytone::expr::Value {
        use horizon_polytone::expr::Root;
        horizon_polytone::expr::Value::Object(match root {
@@ -613,7 +562,7 @@ impl horizon_polytone::expr::Host for BlockHost<'_> {
            (V::Object(2), "noise") => {
                let mut coords = args.iter().filter(|v| !matches!(v, V::Str(_))).map(V::num);
                let (x, y) = (coords.next().unwrap_or(0.0), coords.next().unwrap_or(0.0));
-                num(polytone_noise().get(x, y))
+                num(f64::from(polytone_noise().get2(x, y)))
            }
            _ => Err(format!("{name} is not available to block colormaps")),
        }
@@ -1,116 +0,0 @@
-//! Polytone's `r.noise(x, y)`: 1.18-1.21's `PerlinSimplexNoise` over simplex noises, which 26.3 no
-//! longer has. Measured on the real mod (Polytone 26.3-6.8.6) with a pack whose grass colormap encodes
-//! the noise: the built-in noise is seed 0 with octaves `{1}`, read with the noise offsets
-//! (`getValue(x, y, true)`), and a `polytone/noises` definition with seed 0 or 1 and octaves `{0}`,
-//! `{1}` or `{0, 1}` matches this construction too.
-
-use horizon_core::noise::SimplexNoise;
-use horizon_core::random::{LegacyRandom, RandomSource};
-
-/// `PerlinSimplexNoise(random, octaves)`: one simplex noise per octave, the highest octave first.
-pub(crate) struct PerlinSimplex {
-    levels: Vec<Option<SimplexNoise>>,
-    input_factor: f64,
-    value_factor: f64,
-}
-
-impl PerlinSimplex {
-    /// The construction of `PerlinSimplexNoise(new LegacyRandomSource(seed), octaves)`: octave 0 takes
-    /// the first noise of `seed`'s random; the positive octaves come from a random seeded by that
-    /// noise's value at its own offsets, the negative ones from `seed`'s random after it.
-    pub(crate) fn new(seed: i64, octaves: &[i32]) -> Self {
-        let mut random = LegacyRandom::new(seed);
-        let lowest = octaves.iter().copied().min().unwrap_or(0);
-        let highest = octaves.iter().copied().max().unwrap_or(0);
-        let count = (highest - lowest + 1) as usize;
-        let first = SimplexNoise::new(&mut random);
-        let top = highest;
-        let wanted = |index: i32| octaves.contains(&(top - index));
-        let mut levels: Vec<Option<SimplexNoise>> = (0..count).map(|_| None).collect();
-        for index in top + 1..count as i32 {
-            if index >= 0 && wanted(index) {
-                levels[index as usize] = Some(SimplexNoise::new(&mut random));
-            } else {
-                random.consume_count(262);
-            }
-        }
-        if highest > 0 {
-            // `(long)(getValue(xo, yo, zo) * 9.223372E18F)`: the noise at its own offsets, which
-            // 26.3's get3 reads at (0, 0, 0). The float constant is 2^63.
-            let value = first.get3_f64(0.0, 0.0, 0.0) * 9.223_372e18_f32 as f64;
-            let mut upper = LegacyRandom::new(value as i64);
-            for index in (0..top).rev() {
-                if (index as usize) < count && wanted(index) {
-                    levels[index as usize] = Some(SimplexNoise::new(&mut upper));
-                } else {
-                    upper.consume_count(262);
-                }
-            }
-        }
-        if (0..count as i32).contains(&top) && octaves.contains(&0) {
-            levels[top as usize] = Some(first);
-        }
-        Self {
-            levels,
-            input_factor: 2f64.powi(highest),
-            value_factor: 1.0 / (2f64.powi(count as i32) - 1.0),
-        }
-    }
-
-    /// `getValue(x, y, true)`: each octave read with its offsets, which 26.3's simplex adds itself.
-    pub(crate) fn get(&self, x: f64, y: f64) -> f64 {
-        let (mut input, mut value, mut sum) = (self.input_factor, self.value_factor, 0.0);
-        for level in &self.levels {
-            if let Some(noise) = level {
-                sum += noise.get2_f64(x * input, y * input) * value;
-            }
-            input /= 2.0;
-            value *= 2.0;
-        }
-        sum
-    }
-}
-
-/// The built-in `r.noise(x, y)`: seed 0, octaves `{1}`.
-pub(crate) fn builtin() -> &'static PerlinSimplex {
-    static NOISE: std::sync::OnceLock<PerlinSimplex> = std::sync::OnceLock::new();
-    NOISE.get_or_init(|| PerlinSimplex::new(0, &[1]))
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    /// `r.noise(x/8, z/8)` read on the real mod (Polytone 26.3-6.8.6): a grass colormap whose pixel
-    /// encodes the value, decoded to about 0.01 (polytone-work/rnoise in the measurement notes).
-    #[test]
-    fn the_builtin_noise_reads_what_the_mod_draws() {
-        for (x, z, mod_value) in [
-            (0, 10, -0.28373),
-            (3, 10, -0.14683),
-            (10, 0, 0.31833),
-            (24, 14, -0.55941),
-            (40, 25, -0.48358),
-            (7, 3, -0.68202),
-        ] {
-            let value = builtin().get(f64::from(x) / 8.0, f64::from(z) / 8.0);
-            assert!(
-                (value - mod_value).abs() < 0.02,
-                "({x}, {z}): {value} against {mod_value}"
-            );
-        }
-    }
-
-    /// The octaves add as `PerlinSimplexNoise`'s do: `{0, 1}` is a third of `{1}` and two thirds of
-    /// `{0}` (measured: 0.067 = 0.33 x -0.284 + 0.67 x 0.247 at (0, 10) / 8).
-    #[test]
-    fn two_octaves_weigh_a_third_and_two_thirds() {
-        let both = PerlinSimplex::new(0, &[0, 1]);
-        let (low, high) = (PerlinSimplex::new(0, &[0]), PerlinSimplex::new(0, &[1]));
-        for (x, y) in [(0.0, 1.25), (2.5, -3.0), (17.1, 4.4)] {
-            let mixed = high.get(x, y) / 3.0 + low.get(x, y) * 2.0 / 3.0;
-            assert!((both.get(x, y) - mixed).abs() < 1e-12);
-        }
-        assert!((both.get(0.0, 1.25) - 0.067).abs() < 0.02);
-    }
-}
@@ -2,7 +2,7 @@
 //! settings, kept in `horizon-extras.txt` next to `options.txt` so that file
 //! stays exactly vanilla's, and the logic behind them. Every extra is off by
 //! default; see `docs/extras.md`. Horizon's own switches outside the Extras page
-//! (No AI, Agent Control) are kept here too.
+//! (No AI, Agent Control, Discord Rich Presence) are kept here too.
 use std::{collections::VecDeque, fs, path::Path};

 pub const FILE: &str = "horizon-extras.txt";
@@ -145,6 +145,8 @@ pub struct Extras {
    /// F3+R and F3+E start/stop a repro recording and write its bundle (off by
    /// default: a recording copies the world).
    pub repro_keys: bool,
+    /// "Playing Horizon" on the player's Discord profile (`discord_presence`; on by default).
+    pub discord_presence: bool,
    /// Another controller can join P1's world (`splitscreen`, off by default).
    pub splitscreen: bool,
    /// Two players in one window: 0 auto (side by side when wider than tall), 1 side by side,
@@ -166,6 +168,24 @@ pub struct Extras {
    /// built-in track and leaving the off ones out (`musicPage`, off by
    /// default: vanilla plays exactly as before).
    pub music_page: bool,
+    /// Cosmetics (`horizon_cosmetics`, off unless enabled), the lines `horizon_cosmetics::prefs`
+    /// shares with the launcher's Wardrobe: Show my cosmetics (the account's, sent to the service;
+    /// on by default), how much of other players' to show (no line until chosen:
+    /// `effective_others`), and whether their trails and auras are hidden (off by default).
+    pub cosmetics_mine: bool,
+    pub cosmetics_others: Option<horizon_cosmetics::prefs::Others>,
+    pub cosmetics_hide_fx: bool,
+    /// My cosmetics in single player too (`cosmeticsSolo`, off by default): the window's own server
+    /// names the player by their offline profile, which the service doesn't know, so their own
+    /// cosmetics and name tag style show only with this on.
+    pub cosmetics_solo: bool,
+    /// Whether the signed-in account owns a cosmetic, as the service said (never saved; the game
+    /// sets it): with no choice made, others' cosmetics show only then.
+    pub cosmetics_owner: bool,
+    /// Horizon's mark before the names of other Horizon players (name tags, player list), and
+    /// whether the service may say this player plays Horizon: both on by default.
+    pub horizon_marks: bool,
+    pub horizon_listed: bool,
    /// 3D skin layers (`threeDSkinLayers`, Options → Skin Customization): each
    /// painted texel of a player's outer layer drawn as a slab
    /// (`horizon_client::mobs::skin_layers`).
@@ -213,6 +233,7 @@ impl Default for Extras {
            no_ai: false,
            agent_control: false,
            repro_keys: false,
+            discord_presence: true,
            splitscreen: false,
            splitscreen_two: 0,
            splitscreen_three: 0,
@@ -220,6 +241,13 @@ impl Default for Extras {
            wheel_cycles_settings: false,
            music_off: Vec::new(),
            music_page: false,
+            cosmetics_mine: true,
+            cosmetics_others: None,
+            cosmetics_hide_fx: false,
+            cosmetics_solo: false,
+            cosmetics_owner: false,
+            horizon_marks: true,
+            horizon_listed: true,
            three_d_skin_layers: false,
            pvp: Default::default(),
        }
@@ -229,6 +257,11 @@ fn bool_text(v: bool) -> &'static str {
    if v { "true" } else { "false" }
 }
 impl Extras {
+    /// How much of other players' cosmetics shows: the player's choice, else all of it for an
+    /// account that owns a cosmetic and none for any other (a vanilla game).
+    pub fn effective_others(&self) -> horizon_cosmetics::prefs::Others {
+        horizon_cosmetics::prefs::Others::effective(self.cosmetics_others, self.cosmetics_owner)
+    }
    pub fn load(dir: &Path) -> Self {
        fs::read_to_string(dir.join(FILE))
            .map(|t| Self::parse(&t))
@@ -305,6 +338,7 @@ impl Extras {
                horizon_core::no_ai::KEY => e.no_ai = flag(e.no_ai),
                "agentControl" => e.agent_control = flag(e.agent_control),
                "reproKeys" => e.repro_keys = flag(e.repro_keys),
+                "discordPresence" => e.discord_presence = flag(e.discord_presence),
                "splitscreen" => e.splitscreen = flag(e.splitscreen),
                "splitscreenTwo" => e.splitscreen_two = value.parse().unwrap_or(0).min(2),
                "splitscreenThree" => e.splitscreen_three = value.parse().unwrap_or(0).min(2),
@@ -323,6 +357,15 @@ impl Extras {
                        .collect()
                }
                "musicPage" => e.music_page = flag(e.music_page),
+                "cosmeticsMine" => e.cosmetics_mine = flag(e.cosmetics_mine),
+                "cosmeticsOthers" => {
+                    e.cosmetics_others =
+                        horizon_cosmetics::prefs::Others::parse(value).or(e.cosmetics_others)
+                }
+                "cosmeticsHideFx" => e.cosmetics_hide_fx = flag(e.cosmetics_hide_fx),
+                "cosmeticsSolo" => e.cosmetics_solo = flag(e.cosmetics_solo),
+                horizon_cosmetics::prefs::MARKS => e.horizon_marks = flag(e.horizon_marks),
+                horizon_cosmetics::prefs::LISTED => e.horizon_listed = flag(e.horizon_listed),
                SKIN_LAYERS_KEY => e.three_d_skin_layers = flag(e.three_d_skin_layers),
                key => {
                    e.pvp.parse_line(key, value);
@@ -333,7 +376,7 @@ impl Extras {
    }
    pub fn serialize(&self) -> String {
        let mut text = format!(
-            "packBrowser:{}\npregen:{}\nfullbright:{}\ndynamicLights:{}\nzoom:{}\nzoomKey:{}\nzoomLevel:{}\nzoomSmooth:{}\nzoomSensitivity:{}\nlodZoomDetail:{}\nfps:{}\nfpsCorner:{}\nfpsLows:{}\nkeystrokes:{}\nkeystrokesCorner:{}\nkeystrokesCps:{}\nmovedToMods:{}\nminimap:{}\nminimapCorner:{}\nminimapSize:{}\nminimapShape:{}\nminimapZoom:{}\nminimapRotate:{}\nautoReconnect:{}\nuiSoundReserve:{}\nownNameTag:{}\nhideBlockParticles:{}\nmouseTweaks:{}\nmouseTweaksWheel:{}\nsort:{}\nsortKey:{}\nchatAnimation:{}\nchatIndicator:{}\n{}:{}\nagentControl:{}\nreproKeys:{}\nsplitscreen:{}\nsplitscreenTwo:{}\nsplitscreenThree:{}\nsplitscreenNames:{}\nwheelCyclesListSettings:{}\nmusicOff:{}\nmusicPage:{}\n{}:{}\n",
+            "packBrowser:{}\npregen:{}\nfullbright:{}\ndynamicLights:{}\nzoom:{}\nzoomKey:{}\nzoomLevel:{}\nzoomSmooth:{}\nzoomSensitivity:{}\nlodZoomDetail:{}\nfps:{}\nfpsCorner:{}\nfpsLows:{}\nkeystrokes:{}\nkeystrokesCorner:{}\nkeystrokesCps:{}\nmovedToMods:{}\nminimap:{}\nminimapCorner:{}\nminimapSize:{}\nminimapShape:{}\nminimapZoom:{}\nminimapRotate:{}\nautoReconnect:{}\nuiSoundReserve:{}\nownNameTag:{}\nhideBlockParticles:{}\nmouseTweaks:{}\nmouseTweaksWheel:{}\nsort:{}\nsortKey:{}\nchatAnimation:{}\nchatIndicator:{}\n{}:{}\nagentControl:{}\nreproKeys:{}\ndiscordPresence:{}\nsplitscreen:{}\nsplitscreenTwo:{}\nsplitscreenThree:{}\nsplitscreenNames:{}\nwheelCyclesListSettings:{}\nmusicOff:{}\nmusicPage:{}\ncosmeticsMine:{}\n{}cosmeticsHideFx:{}\ncosmeticsSolo:{}\n{}:{}\n{}:{}\n{}:{}\n",
            bool_text(self.pack_browser),
            bool_text(self.pregen),
            bool_text(self.fullbright),
@@ -375,6 +418,7 @@ impl Extras {
            bool_text(self.no_ai),
            bool_text(self.agent_control),
            bool_text(self.repro_keys),
+            bool_text(self.discord_presence),
            bool_text(self.splitscreen),
            self.splitscreen_two,
            self.splitscreen_three,
@@ -382,6 +426,16 @@ impl Extras {
            bool_text(self.wheel_cycles_settings),
            self.music_off.join(","),
            bool_text(self.music_page),
+            bool_text(self.cosmetics_mine),
+            // Written once the player chose.
+            self.cosmetics_others
+                .map_or(String::new(), |o| format!("cosmeticsOthers:{}\n", o.name())),
+            bool_text(self.cosmetics_hide_fx),
+            bool_text(self.cosmetics_solo),
+            horizon_cosmetics::prefs::MARKS,
+            bool_text(self.horizon_marks),
+            horizon_cosmetics::prefs::LISTED,
+            bool_text(self.horizon_listed),
            SKIN_LAYERS_KEY,
            bool_text(self.three_d_skin_layers),
        );
@@ -428,16 +482,13 @@ impl Extras {
        true
    }
    /// Written only once something differs from the defaults, so a vanilla
-    /// setup gains no file. The settings stores of this file follow these lines
-    /// (`horizon_hooks::settings`).
+    /// setup gains no file.
    pub fn save(&self, dir: &Path) {
        let path = dir.join(FILE);
-        let mut text = self.serialize();
-        let stores_default = horizon_hooks::settings::engine::append(FILE, &mut text);
-        if *self == Self::default() && stores_default && !path.exists() {
+        if *self == Self::default() && !path.exists() {
            return;
        }
-        let _ = fs::write(path, text);
+        let _ = fs::write(path, self.serialize());
    }
 }

@@ -559,6 +610,8 @@ pub enum Item {
    /// Not on the Extras page: Horizon Settings shows No AI, its AI Agent page Agent Control.
    NoAi,
    AgentControl,
+    /// On the Horizon Settings page.
+    DiscordPresence,
    /// On the AI Agent page, next to Agent Control: the F3 recording shortcuts.
    ReproKeys,
    /// On the Splitscreen settings page.
@@ -567,6 +620,13 @@ pub enum Item {
    /// The Select Resource Packs screen's Add button (Modrinth).
    PackBrowser,
    Pregen,
+    /// Shown only while cosmetics are enabled (`horizon_cosmetics::enabled`).
+    CosmeticsMine,
+    CosmeticsOthers,
+    CosmeticsHideFx,
+    CosmeticsSolo,
+    HorizonMarks,
+    HorizonMe,
    /// On the PvP & HUD page (`pvp::rows`).
    Pvp(crate::pvp::Opt),
 }
@@ -574,10 +634,8 @@ pub enum Item {
 pub fn rows() -> Vec<Result<Item, &'static str>> {
    use Item::*;
    // Fullbright, Dynamic lights and Hide block-break particles change the picture: they
-    // are on the graphics screen's Quality page (`graphics_ui::rows`), not here. The Cosmetics
-    // group comes last, from the cosmetics' own section (`pages::Place::Extras`) while they are
-    // offered.
-    vec![
+    // are on the graphics screen's Quality page (`graphics_ui::rows`), not here.
+    let mut rows = vec![
        Err("horizon.extras.header.third_person"),
        Ok(OwnNameTag),
        Err("horizon.extras.header.inventory"),
@@ -598,7 +656,19 @@ pub fn rows() -> Vec<Result<Item, &'static str>> {
        Err("horizon.extras.header.menus"),
        Ok(WheelCyclesSettings),
        Ok(PackBrowser),
-    ]
+    ];
+    if horizon_cosmetics::enabled() {
+        rows.extend([
+            Err("horizon.extras.header.cosmetics"),
+            Ok(CosmeticsMine),
+            Ok(CosmeticsSolo),
+            Ok(CosmeticsOthers),
+            Ok(CosmeticsHideFx),
+            Ok(HorizonMarks),
+            Ok(HorizonMe),
+        ]);
+    }
+    rows
 }
 impl Item {
    /// The language key of the caption (`horizon.*`, assets/horizon/lang).
@@ -618,12 +688,19 @@ impl Item {
            Item::NoAi => "horizon.extras.no_ai",
            Item::AgentControl => "horizon.extras.agent_control",
            Item::ReproKeys => "horizon.extras.repro_keys",
+            Item::DiscordPresence => "horizon.extras.discord_presence",
            Item::Splitscreen => "horizon.extras.splitscreen",
            Item::ChatAnimation => "horizon.extras.chat_animation",
            Item::ChatIndicator => "horizon.extras.chat_indicator",
            Item::WheelCyclesSettings => "horizon.extras.wheel_cycles_settings",
            Item::PackBrowser => "horizon.extras.pack_browser",
            Item::Pregen => "horizon.extras.pregen",
+            Item::CosmeticsMine => "horizon.extras.cosmetics_mine",
+            Item::CosmeticsOthers => "horizon.extras.cosmetics_others",
+            Item::CosmeticsHideFx => "horizon.extras.cosmetics_hide_fx",
+            Item::CosmeticsSolo => "horizon.extras.cosmetics_solo",
+            Item::HorizonMarks => "horizon.extras.horizon_marks",
+            Item::HorizonMe => "horizon.extras.horizon_me",
            Item::Pvp(o) => o.caption_key(),
        }
    }
@@ -644,12 +721,19 @@ impl Item {
            Item::NoAi => "horizon.extras.no_ai.tooltip",
            Item::AgentControl => "horizon.extras.agent_control.tooltip",
            Item::ReproKeys => "horizon.extras.repro_keys.tooltip",
+            Item::DiscordPresence => "horizon.extras.discord_presence.tooltip",
            Item::Splitscreen => "horizon.extras.splitscreen.tooltip",
            Item::ChatAnimation => "horizon.extras.chat_animation.tooltip",
            Item::ChatIndicator => "horizon.extras.chat_indicator.tooltip",
            Item::WheelCyclesSettings => "horizon.extras.wheel_cycles_list_settings.tooltip",
            Item::PackBrowser => "horizon.extras.pack_browser.tooltip",
            Item::Pregen => "horizon.extras.pregen.tooltip",
+            Item::CosmeticsMine => "horizon.extras.cosmetics_mine.tooltip",
+            Item::CosmeticsOthers => "horizon.extras.cosmetics_others.tooltip",
+            Item::CosmeticsHideFx => "horizon.extras.cosmetics_hide_fx.tooltip",
+            Item::CosmeticsSolo => "horizon.extras.cosmetics_solo.tooltip",
+            Item::HorizonMarks => "horizon.extras.horizon_marks.tooltip",
+            Item::HorizonMe => "horizon.extras.horizon_me.tooltip",
            Item::Pvp(o) => o.description_key(),
        }
    }
@@ -681,10 +765,17 @@ impl Item {
            Item::NoAi => "No AI",
            Item::AgentControl => "Agent Control",
            Item::ReproKeys => "Recording shortcuts",
+            Item::DiscordPresence => "Discord Rich Presence",
            Item::Splitscreen => "Splitscreen",
            Item::WheelCyclesSettings => "Scroll wheel changes settings",
            Item::PackBrowser => "Resource pack browser",
            Item::Pregen => "Chunk pregeneration",
+            Item::CosmeticsMine => "My cosmetics",
+            Item::CosmeticsOthers => "Other players' cosmetics",
+            Item::CosmeticsHideFx => "Hide other players' trails and auras",
+            Item::CosmeticsSolo => "In single player",
+            Item::HorizonMarks => "Horizon logos",
+            Item::HorizonMe => "Show me as Horizon",
            Item::Pvp(o) => o.caption(),
        }
    }
@@ -698,8 +789,10 @@ impl Item {
            ChatIndicator => ChatAnimation,
            Pvp(o) => return o.parent().map(Pvp),
            Fullbright | DynamicLights | OwnNameTag | HideBlockParticles | MouseTweaks | Sort
-            | AutoReconnect | NoAi | AgentControl | ReproKeys | Splitscreen | ChatAnimation
-            | WheelCyclesSettings | MusicPage | PackBrowser | Pregen => {
+            | AutoReconnect | NoAi | AgentControl | ReproKeys | DiscordPresence | Splitscreen
+            | ChatAnimation | WheelCyclesSettings | MusicPage | PackBrowser | CosmeticsMine
+            | CosmeticsOthers | CosmeticsHideFx | CosmeticsSolo | HorizonMarks | HorizonMe
+            | Pregen => {
                return None;
            }
        })
@@ -748,6 +841,9 @@ impl Item {
            Item::NoAi => {
                "Hides and turns off every AI feature: agent control, horizon-ctl and the MCP servers. The launcher's switch too."
            }
+            Item::DiscordPresence => {
+                "Shows Playing Horizon on your Discord profile while Discord runs: menus, single player or multiplayer, the dimension and the time played. Never a world's name or a server's address."
+            }
            Item::Splitscreen => {
                "In a world, another controller can join as a new player: press A when it asks, then pick a profile and where to play."
            }
@@ -757,6 +853,24 @@ impl Item {
            Item::ReproKeys => {
                "F3+R starts or stops a repro recording and F3+E writes its bundle. Off by default: a recording copies the world."
            }
+            Item::CosmeticsMine => {
+                "Hidden: every Horizon player sees you without your cosmetics, you included. The same switch as the launcher's Wardrobe."
+            }
+            Item::CosmeticsOthers => {
+                "What other Horizon players wear: everything, only their name tag styles, or nothing. Hidden unless you own cosmetics, until you choose. Hidden, the game never asks what they wear."
+            }
+            Item::CosmeticsHideFx => {
+                "Other players' trails and auras stay hidden; their other cosmetics still show. Off by default."
+            }
+            Item::CosmeticsSolo => {
+                "Show your cosmetics and your name tag's badge in your single-player worlds too (your name tag with Own name tag). Off: only on servers."
+            }
+            Item::HorizonMarks => {
+                "Show the Horizon logo next to Horizon players: a small logo before the names of other players who use Horizon, above their heads and in the player list. Only Horizon players see it: servers receive nothing."
+            }
+            Item::HorizonMe => {
+                "Show me as a Horizon player: other Horizon players see the logo by your name. On, the service answers anyone who asks about you that you played Horizon in the last 3 hours; off, it never reports you."
+            }
            Item::Pvp(o) => o.description(),
            Item::WheelCyclesSettings => {
                "The scroll wheel over a button in the settings changes its value, as in vanilla. Off, the wheel only scrolls the list."
@@ -783,6 +897,12 @@ impl Item {
            | Item::Splitscreen
            | Item::WheelCyclesSettings
            | Item::PackBrowser => Some(Cost::None),
+            Item::CosmeticsMine
+            | Item::CosmeticsOthers
+            | Item::CosmeticsHideFx
+            | Item::CosmeticsSolo
+            | Item::HorizonMarks
+            | Item::HorizonMe => Some(Cost::Low),
            _ => None,
        }
    }
@@ -804,10 +924,15 @@ impl Item {
            Item::NoAi => e.no_ai,
            Item::AgentControl => e.agent_control,
            Item::ReproKeys => e.repro_keys,
+            Item::DiscordPresence => e.discord_presence,
            Item::Splitscreen => e.splitscreen,
            Item::WheelCyclesSettings => e.wheel_cycles_settings,
            Item::PackBrowser => e.pack_browser,
            Item::Pregen => e.pregen,
+            Item::CosmeticsHideFx => e.cosmetics_hide_fx,
+            Item::CosmeticsSolo => e.cosmetics_solo,
+            Item::HorizonMarks => e.horizon_marks,
+            Item::HorizonMe => e.horizon_listed,
            Item::Pvp(o) => return o.switch(&e.pvp),
            _ => return None,
        })
@@ -817,14 +942,30 @@ impl Item {
        match self {
            Item::SortKey => crate::keybinds::display_name(&e.sort_key).plain(),
            Item::Pvp(o) if o.switch(&e.pvp).is_none() => o.value(&e.pvp).unwrap_or_default(),
+            Item::CosmeticsMine => match e.cosmetics_mine {
+                true => crate::lang::get_or("horizon.extras.cosmetics.shown", "Shown"),
+                false => crate::lang::get_or("horizon.extras.cosmetics.hidden", "Hidden"),
+            },
+            Item::CosmeticsOthers => {
+                use horizon_cosmetics::prefs::Others;
+                match e.effective_others() {
+                    Others::Shown => crate::lang::get_or("horizon.extras.cosmetics.shown", "Shown"),
+                    Others::NameTags => {
+                        crate::lang::get_or("horizon.extras.cosmetics.name_tags", "Name tags only")
+                    }
+                    Others::Hidden => {
+                        crate::lang::get_or("horizon.extras.cosmetics.hidden", "Hidden")
+                    }
+                }
+            }
            other => match other.switch(e) {
                Some(true) => crate::lang::get_or("On", "On"),
                _ => crate::lang::get_or("Off", "Off"),
            },
        }
    }
-    /// A click (`back` for the right button: a PvP & HUD choice steps back; a switch flips
-    /// either way). The sort key binds instead.
+    /// A click (`back` for the right button: it turns the three-way cosmetics button the other
+    /// way; every other item left is a switch, so both flip it). The sort key binds instead.
    pub fn cycle(self, e: &mut Extras, back: bool) {
        match self {
            Item::Fullbright => e.fullbright = !e.fullbright,
@@ -842,10 +983,21 @@ impl Item {
            Item::NoAi => e.no_ai = !e.no_ai,
            Item::AgentControl => e.agent_control = !e.agent_control,
            Item::ReproKeys => e.repro_keys = !e.repro_keys,
+            Item::DiscordPresence => e.discord_presence = !e.discord_presence,
            Item::Splitscreen => e.splitscreen = !e.splitscreen,
            Item::WheelCyclesSettings => e.wheel_cycles_settings = !e.wheel_cycles_settings,
            Item::PackBrowser => e.pack_browser = !e.pack_browser,
            Item::Pregen => e.pregen = !e.pregen,
+            Item::CosmeticsMine => e.cosmetics_mine = !e.cosmetics_mine,
+            Item::CosmeticsOthers => {
+                // From what the button shows; the result is the player's choice from now on.
+                let o = e.effective_others();
+                e.cosmetics_others = Some(if back { o.next().next() } else { o.next() });
+            }
+            Item::CosmeticsHideFx => e.cosmetics_hide_fx = !e.cosmetics_hide_fx,
+            Item::CosmeticsSolo => e.cosmetics_solo = !e.cosmetics_solo,
+            Item::HorizonMarks => e.horizon_marks = !e.horizon_marks,
+            Item::HorizonMe => e.horizon_listed = !e.horizon_listed,
            Item::Pvp(o) => o.cycle(&mut e.pvp, back),
            Item::SortKey => {}
        }
@@ -864,6 +1016,73 @@ impl Item {
 mod tests {
    use super::*;

+    #[test]
+    fn other_players_cosmetics_cycle_three_ways_and_read_the_old_switch() {
+        use horizon_cosmetics::prefs::Others;
+        let mut e = Extras {
+            cosmetics_owner: true,
+            ..Extras::default()
+        };
+        assert_eq!(
+            (e.effective_others(), e.cosmetics_hide_fx, e.cosmetics_mine),
+            (Others::Shown, false, true)
+        );
+        Item::CosmeticsOthers.cycle(&mut e, false);
+        assert_eq!(e.cosmetics_others, Some(Others::NameTags));
+        Item::CosmeticsOthers.cycle(&mut e, false);
+        assert_eq!(e.cosmetics_others, Some(Others::Hidden));
+        // The right button goes back.
+        Item::CosmeticsOthers.cycle(&mut e, true);
+        assert_eq!(e.cosmetics_others, Some(Others::NameTags));
+        // Ownership is the service's, never written.
+        assert_eq!(
+            Extras::parse(&e.serialize()),
+            Extras {
+                cosmetics_owner: false,
+                ..e.clone()
+            }
+        );
+        // The launcher's Wardrobe writes the same lines.
+        assert_eq!(
+            horizon_cosmetics::prefs::Prefs::parse(&e.serialize()).others,
+            Some(Others::NameTags)
+        );
+        // Before this, the line was on or off.
+        assert_eq!(
+            Extras::parse("cosmeticsOthers:false").cosmetics_others,
+            Some(Others::Hidden)
+        );
+    }
+
+    #[test]
+    fn others_cosmetics_are_off_for_a_player_who_owns_none_until_chosen() {
+        use horizon_cosmetics::prefs::Others;
+        let mut e = Extras::default();
+        // Nothing chosen, nothing owned: the button shows Hidden and no line is written.
+        assert_eq!(e.effective_others(), Others::Hidden);
+        assert_eq!(
+            Item::CosmeticsOthers.value(&e),
+            crate::lang::get_or("horizon.extras.cosmetics.hidden", "Hidden")
+        );
+        assert!(!e.serialize().contains("cosmeticsOthers"));
+        // The service says the account owns one: shown, still not a choice.
+        e.cosmetics_owner = true;
+        assert_eq!(e.effective_others(), Others::Shown);
+        assert!(!e.serialize().contains("cosmeticsOthers"));
+        // A non-owner pressing the button goes on from Hidden, and that choice is kept.
+        e.cosmetics_owner = false;
+        Item::CosmeticsOthers.cycle(&mut e, false);
+        assert_eq!(e.cosmetics_others, Some(Others::Shown));
+        let saved = Extras::parse(&e.serialize());
+        assert_eq!(saved.effective_others(), Others::Shown);
+        // An owner who chose Hidden keeps it.
+        let hidden = Extras {
+            cosmetics_owner: true,
+            ..Extras::parse("cosmeticsOthers:hidden\n")
+        };
+        assert_eq!(hidden.effective_others(), Others::Hidden);
+    }
+
    #[test]
    fn a_saved_wheel_setting_from_before_the_default_changed_is_dropped() {
        assert!(!Extras::parse("wheelCyclesSettings:true\n").wheel_cycles_settings);
@@ -882,7 +1101,7 @@ mod tests {
        assert!(!d.mouse_tweaks && !d.sort && !d.own_name_tag && !d.ui_sound_reserve);
        assert!(!d.hide_block_particles && !d.pregen);
        assert!(!d.music_page && d.music_off.is_empty());
-        assert!(!d.wheel_cycles_settings);
+        assert!(d.discord_presence && !d.wheel_cycles_settings);
        assert_eq!(Extras::parse(""), d);
        assert_eq!(Extras::parse(&d.serialize()), d);
        let mut e = d.clone();
@@ -921,6 +1140,7 @@ mod tests {
        e.sort_key = "key.keyboard.r".into();
        e.chat_animation = true;
        e.chat_indicator = false;
+        e.discord_presence = false;
        assert!(!e.splitscreen);
        Item::Splitscreen.cycle(&mut e, false);
        assert_eq!(Item::Splitscreen.switch(&e), Some(true));
@@ -1,6 +1,5 @@
 //! The Horizon Extras page, on the settings shell (`settings_shell`): which rows it has and what
-//! pressing them does. Each one's value and what it does stay in `extras::Item`; the sections crates
-//! add (`horizon_hooks::pages::Place::Extras`) keep theirs.
+//! pressing them does. Each one's value and what it does stay in `extras::Item`.
 use crate::{
    extras::{self, Item},
    lang,
@@ -8,7 +7,6 @@ use crate::{
    settings::Settings,
    settings_shell::{self as shell, Binding, Group, Output, Row, Screen, Sheet, Value},
 };
-use horizon_hooks::pages::{self as added, Act, Label};

 const TITLE: &str = "horizon.pages.extras";
 const ABOUT: &str = "horizon.pages.extras.tooltip";
@@ -33,125 +31,6 @@ pub(crate) enum ExtraRow {
    /// It isn't installed: where to get it. A note, not a button: Options > Mods already has the
    /// one way into the Mods page (`every_setting_and_page_is_reached_from_one_place`).
    ZoomInstall,
-    /// Row `.1` of the section registered page `.0` adds (`Place::Extras`).
-    Added(usize, usize),
-}
-
-#[cfg(test)]
-thread_local! {
-    /// A test's own pages, instead of the game's registered ones: each test runs on its thread.
-    static TEST_PAGES: std::cell::Cell<Option<&'static [&'static dyn added::Page]>> =
-        const { std::cell::Cell::new(None) };
-}
-
-/// The pages crates registered, all places.
-fn pages() -> &'static [&'static dyn added::Page] {
-    #[cfg(test)]
-    if let Some(pages) = TEST_PAGES.get() {
-        return pages;
-    }
-    added::engine::all()
-}
-
-/// The sections of this page, by their index among the registered pages.
-fn sections() -> impl Iterator<Item = (usize, &'static dyn added::Page)> {
-    let pages = pages().iter().copied().enumerate();
-    pages.filter(|(_, page)| page.place() == added::Place::Extras)
-}
-
-fn label_text(label: Label) -> String {
-    match label {
-        Label::Key(key) => lang::get(key),
-        Label::Value(text) => text,
-    }
-}
-
-/// The page's group named `name`, made at the end if it has none.
-fn group_named<'a>(
-    groups: &'a mut Vec<Group<ExtraRow>>,
-    name: &'static str,
-) -> &'a mut Group<ExtraRow> {
-    let at = groups.iter().position(|group| group.name == name);
-    let at = at.unwrap_or_else(|| {
-        groups.push(Group {
-            name,
-            rows: Vec::new(),
-        });
-        groups.len() - 1
-    });
-    &mut groups[at]
-}
-
-/// The sections' rows, in the groups their titles and headings name.
-fn add_sections(groups: &mut Vec<Group<ExtraRow>>) {
-    for (page, section) in sections() {
-        let mut rows = Vec::new();
-        section.rows(&mut rows);
-        let mut name = section.title();
-        for (r, row) in rows.into_iter().enumerate() {
-            let id = ExtraRow::Added(page, r);
-            let row = match row {
-                added::Row::Heading(key) => {
-                    name = key;
-                    continue;
-                }
-                added::Row::Note(text) => Row::new(id, text, Value::Note).live(false),
-                added::Row::Toggle { label, on } => {
-                    Row::new(id, lang::get(label), Value::Switch(on))
-                }
-                added::Row::Cycle { label, value } => {
-                    Row::new(id, lang::get(label), Value::Choice(label_text(value)))
-                }
-                added::Row::Slider { label, value, text } => {
-                    let position = value.clamp(0.0, 1.0);
-                    let text = label_text(text);
-                    let value = Value::Slider {
-                        position,
-                        steps: None,
-                        text,
-                    };
-                    Row::new(id, lang::get(label), value)
-                }
-                added::Row::Button {
-                    label,
-                    active: true,
-                    ..
-                } => Row::new(id, lang::get(label), Value::Press),
-                added::Row::Key { label, key } => {
-                    let key = crate::keybinds::display_name(&key).plain();
-                    Row::new(id, lang::get(label), Value::Read(key))
-                }
-                // A row kind newer than this engine.
-                _ => continue,
-            };
-            let row = match section.tooltip(r) {
-                Some(about) => row.about(label_text(about)),
-                None => row,
-            };
-            group_named(groups, name).rows.push(row);
-        }
-    }
-}
-
-/// Row `r` of registered page `page` was acted on: the options screen saves when it closes.
-fn act(page: usize, r: usize, act: Act) -> Vec<Output> {
-    let Some(section) = pages().get(page) else {
-        return Vec::new();
-    };
-    section.act(r, act);
-    vec![Output::Event(Event::Changed)]
-}
-
-/// Whether row `r` of registered page `page` steps (a switch or a cycle).
-fn steps(page: usize, r: usize) -> bool {
-    let mut rows = Vec::new();
-    if let Some(section) = pages().get(page) {
-        section.rows(&mut rows);
-    }
-    matches!(
-        rows.get(r),
-        Some(added::Row::Toggle { .. } | added::Row::Cycle { .. })
-    )
 }

 fn item_row(item: Item, s: &Settings) -> Row<ExtraRow> {
@@ -206,13 +85,9 @@ impl Screen for ExtrasScreen {
    fn note_lines(&self) -> usize {
        NOTE_LINES
    }
-    /// The rows read the extras, the mods and the sections' rows.
+    /// The rows read the extras, the mods and whether cosmetics are offered.
    fn stamp(&self, s: &Settings) -> u64 {
-        let mut added = Vec::new();
-        for (_, section) in sections() {
-            section.rows(&mut added);
-        }
-        shell::stamp_of(&(&s.extras, &s.mods, added))
+        shell::stamp_of(&(&s.extras, &s.mods, horizon_cosmetics::enabled()))
    }
    fn sheets(&self, s: &Settings) -> Vec<Sheet<(), ExtraRow>> {
        let mut groups = vec![Group {
@@ -232,7 +107,6 @@ impl Screen for ExtrasScreen {
                }
            }
        }
-        add_sections(&mut groups);
        vec![Sheet::new((), lang::get(TITLE), lang::get(ABOUT), groups)]
    }
    fn press(&mut self, s: &mut Settings, row: ExtraRow, back: bool) -> Vec<Output> {
@@ -251,29 +125,16 @@ impl Screen for ExtrasScreen {
                Output::Event(Event::NativeSettings(i)),
            ],
            ExtraRow::ZoomInstall => Vec::new(),
-            ExtraRow::Added(page, r) => {
-                act(page, r, if back { Act::PressBack } else { Act::Press })
-            }
-        }
-    }
-    fn slide(&mut self, _s: &mut Settings, row: ExtraRow, position: f32) {
-        if let ExtraRow::Added(page, r) = row {
-            act(page, r, Act::Slide(position));
        }
    }
    /// With the wheel extra on, the wheel over an item changes it, without a click; the mod's rows
    /// let the list scroll.
    fn wheel_step(&mut self, s: &mut Settings, row: ExtraRow, back: bool) -> Option<Vec<Output>> {
-        match row {
-            ExtraRow::Item(item) => {
-                item.cycle(&mut s.extras, back);
-                Some(vec![Output::Event(Event::Changed)])
-            }
-            ExtraRow::Added(page, r) if steps(page, r) => {
-                Some(act(page, r, if back { Act::PressBack } else { Act::Press }))
-            }
-            _ => None,
-        }
+        let ExtraRow::Item(item) = row else {
+            return None;
+        };
+        item.cycle(&mut s.extras, back);
+        Some(vec![Output::Event(Event::Changed)])
    }
 }

@@ -320,6 +181,22 @@ mod tests {
        assert_ne!(s.extras.mouse_tweaks_wheel, before);
    }

+    #[test]
+    fn the_three_way_cosmetics_row_turns_both_ways() {
+        use horizon_cosmetics::prefs::Others;
+        let mut s = Settings::default();
+        let mut screen = ExtrasScreen;
+        let row = ExtraRow::Item(Item::CosmeticsOthers);
+        // Not chosen, nothing owned: it shows Hidden, and forward wraps to Shown.
+        assert_eq!(s.extras.effective_others(), Others::Hidden);
+        screen.press(&mut s, row, false);
+        assert_eq!(s.extras.cosmetics_others, Some(Others::Shown));
+        screen.press(&mut s, row, true);
+        assert_eq!(s.extras.cosmetics_others, Some(Others::Hidden));
+        screen.press(&mut s, row, true);
+        assert_eq!(s.extras.cosmetics_others, Some(Others::NameTags));
+    }
+
    /// The sort key binds instead of cycling; the wheel leaves it be.
    #[test]
    fn the_key_row_waits_for_a_key() {
@@ -415,146 +292,4 @@ mod tests {
        shell.key(&mut s, K::ArrowDown, None, false, size);
        assert_eq!(shell.focused_row(), Some(first));
    }
-
-    /// A section with a switch in the page's Multiplayer group, then a heading of its own with a
-    /// number that steps either way, a note and a volume.
-    struct Section {
-        on: std::sync::Mutex<bool>,
-        step: std::sync::Mutex<i32>,
-        volume: std::sync::Mutex<f32>,
-    }
-    impl added::Page for Section {
-        fn id(&self) -> &'static str {
-            "test.section"
-        }
-        fn title(&self) -> &'static str {
-            "horizon.extras.header.multiplayer"
-        }
-        fn place(&self) -> added::Place {
-            added::Place::Extras
-        }
-        fn rows(&self, rows: &mut Vec<added::Row>) {
-            rows.push(added::Row::Toggle {
-                label: "test.section.switch",
-                on: *self.on.lock().unwrap(),
-            });
-            rows.push(added::Row::Heading("test.section.heading"));
-            rows.push(added::Row::Cycle {
-                label: "test.section.step",
-                value: Label::Value(self.step.lock().unwrap().to_string()),
-            });
-            rows.push(added::Row::Note("a note".into()));
-            rows.push(added::Row::Slider {
-                label: "test.section.volume",
-                value: *self.volume.lock().unwrap(),
-                text: Label::Value(String::new()),
-            });
-        }
-        fn act(&self, row: usize, act: Act) {
-            match (row, act) {
-                (0, Act::Press | Act::PressBack) => {
-                    let mut on = self.on.lock().unwrap();
-                    *on = !*on;
-                }
-                (2, Act::Press) => *self.step.lock().unwrap() += 1,
-                (2, Act::PressBack) => *self.step.lock().unwrap() -= 1,
-                (4, Act::Slide(v)) => *self.volume.lock().unwrap() = v,
-                _ => {}
-            }
-        }
-    }
-
-    /// A page for Horizon Settings: never on Extras.
-    struct Elsewhere;
-    impl added::Page for Elsewhere {
-        fn id(&self) -> &'static str {
-            "test.elsewhere"
-        }
-        fn title(&self) -> &'static str {
-            "test.elsewhere"
-        }
-        fn place(&self) -> added::Place {
-            added::Place::HorizonSettings
-        }
-        fn rows(&self, rows: &mut Vec<added::Row>) {
-            rows.push(added::Row::button("test.elsewhere.button"));
-        }
-        fn act(&self, _: usize, _: Act) {}
-    }
-
-    fn with_section() -> &'static Section {
-        let section: &'static Section = Box::leak(Box::new(Section {
-            on: false.into(),
-            step: 0.into(),
-            volume: 0.5.into(),
-        }));
-        let pages: &'static [&'static dyn added::Page] = Box::leak(Box::new([
-            &Elsewhere as &dyn added::Page,
-            section as &dyn added::Page,
-        ]));
-        TEST_PAGES.set(Some(pages));
-        section
-    }
-
-    /// The section's first row joins the page's own Multiplayer group, after its rows; its heading
-    /// starts a group after the page's; a page for elsewhere adds nothing.
-    #[test]
-    fn a_section_joins_the_group_its_title_names_and_heads_its_own() {
-        with_section();
-        let s = Settings::default();
-        let sheets = ExtrasScreen.sheets(&s);
-        let groups = &sheets[0].groups;
-        let ids = |name: &str| -> Vec<ExtraRow> {
-            let group = groups.iter().find(|g| g.name == name).unwrap();
-            group.rows.iter().map(|r| r.id).collect()
-        };
-        let multiplayer = ids("horizon.extras.header.multiplayer");
-        assert_eq!(multiplayer.last(), Some(&ExtraRow::Added(1, 0)));
-        assert_eq!(groups.last().unwrap().name, "test.section.heading");
-        let own = [
-            ExtraRow::Added(1, 2),
-            ExtraRow::Added(1, 3),
-            ExtraRow::Added(1, 4),
-        ];
-        assert_eq!(ids("test.section.heading"), own);
-        let all = rows_of(&s);
-        assert!(!all.iter().any(|r| matches!(r.id, ExtraRow::Added(0, _))));
-    }
-
-    /// A click flips the switch, a Shift click steps the number back, the wheel steps it, and the
-    /// note takes no click; the rows show what the section holds after each.
-    #[test]
-    fn a_sections_rows_act_on_it() {
-        let section = with_section();
-        let mut s = Settings::default();
-        let mut shell = Shell::<ExtrasScreen>::default();
-        let switch = ExtraRow::Added(1, 0);
-        let at = shell.point_at(&s, SIZE, switch);
-        assert!(
-            !shell
-                .click(&mut s, at, SIZE, false, false, false)
-                .is_empty()
-        );
-        assert!(*section.on.lock().unwrap());
-        let value = |s: &Settings, id| rows_of(s).into_iter().find(|r| r.id == id).unwrap().value;
-        assert_eq!(value(&s, switch), Value::Switch(true));
-        let step = ExtraRow::Added(1, 2);
-        let mut screen = ExtrasScreen;
-        screen.press(&mut s, step, true);
-        assert_eq!(value(&s, step), Value::Choice("-1".into()));
-        assert!(screen.wheel_step(&mut s, step, false).is_some());
-        assert_eq!(*section.step.lock().unwrap(), 0);
-        assert_eq!(
-            screen.wheel_step(&mut s, ExtraRow::Added(1, 3), false),
-            None
-        );
-        let note = shell.point_at(&s, SIZE, ExtraRow::Added(1, 3));
-        assert!(
-            shell
-                .click(&mut s, note, SIZE, false, false, false)
-                .is_empty()
-        );
-        screen.slide(&mut s, ExtraRow::Added(1, 4), 0.25);
-        assert_eq!(*section.volume.lock().unwrap(), 0.25);
-    }
 }
@@ -231,10 +231,8 @@ pub struct FogInputs<'a> {
    /// `GameRenderer.nightVisionScale` while Night Vision is on without
    /// Darkness, else 0 (`FogRenderer.computeFogColor`'s brightenFactor).
    pub night_vision: f32,
-    /// The packs' `environment` fog settings (Polytone's).
-    pub environment: crate::pack_palette::Environment,
-    /// The packs' fluid modifiers' fog.
-    pub fluid_fog: crate::pack_palette::FluidFogs,
+    /// The packs' Polytone `environment` fog settings.
+    pub environment: horizon_polytone::colors::Environment,
 }

 /// `FogRenderer.setupFog` + `computeFogColor`.
@@ -399,24 +397,6 @@ pub fn setup_fog(tables: &FogTables, state: &FogState, input: &FogInputs) -> Fog
            }
        }
    }
-    // A pack's fluid modifier over its fluid's fog, after everything else (wiki "Custom Colors").
-    let fluid = match input.fog_type {
-        FogType::Lava => input.fluid_fog.lava,
-        FogType::Water if input.blindness.is_none() && input.darkness.is_none() => {
-            input.fluid_fog.water
-        }
-        _ => None,
-    };
-    if let Some(f) = fluid {
-        if let Some(rgb) = f.color {
-            let [r, g, b] = self::rgb(rgb);
-            fog.color = [r, g, b, 1.0];
-        }
-        let end = fog.environmental_end * f.radius;
-        let start = end - (end - fog.environmental_start * f.radius) * f.fade;
-        (fog.environmental_start, fog.environmental_end) = (start, end);
-        (fog.sky_end, fog.cloud_end) = (end, end);
-    }
    let span = (rd / 10.0).clamp(4.0, 64.0);
    fog.render_distance_start = rd - span;
    fog.render_distance_end = rd;
@@ -515,7 +495,6 @@ mod tests {
            full_water_vision: false,
            night_vision: 0.0,
            environment: Default::default(),
-            fluid_fog: Default::default(),
        }
    }
    #[test]
@@ -602,7 +581,7 @@ mod tests {
        let tables = FogTables {
            water_fog_end: vec![1.0],
        };
-        let environment = crate::pack_palette::Environment {
+        let environment = horizon_polytone::colors::Environment {
            powder_snow_fog: Some(0xFF0000),
            blindness_fog_distance: 40.0,
            water_fog_brightening: 0.0,
@@ -632,41 +611,9 @@ mod tests {
        let kept = setup_fog(&tables, &state, &input).color;
        assert_eq!(&kept[..3], &[0.1, 0.2, 0.4]);
    }
-    #[test]
-    fn a_fluid_modifier_scales_and_colours_its_fog_last() {
-        let sky = Sky {
-            fog_start: 10.0,
-            fog_end: 96.0,
-            ..Sky::default()
-        };
-        let tables = FogTables {
-            water_fog_end: vec![1.0],
-        };
-        let mut input = inputs(&sky);
-        input.fog_type = FogType::Lava;
-        input.fire_resistance = true;
-        let vanilla = setup_fog(&tables, &FogState::default(), &input);
-        assert_eq!(
-            (vanilla.environmental_start, vanilla.environmental_end),
-            (0.0, 5.0)
-        );
-        input.fluid_fog.lava = Some(crate::pack_palette::FluidFog {
-            color: Some(0x00FF00),
-            radius: 2.0,
-            fade: 0.5,
-        });
-        let fog = setup_fog(&tables, &FogState::default(), &input);
-        assert_eq!(fog.color, [0.0, 1.0, 0.0, 1.0]);
-        // The end doubles; half the fade from 0 to 10 starts it at 5.
-        assert_eq!(
-            (fog.environmental_start, fog.environmental_end),
-            (5.0, 10.0)
-        );
-        assert_eq!((fog.sky_end, fog.cloud_end), (10.0, 10.0));
-    }
    fn inputs_with<'a>(
        input: &FogInputs<'a>,
-        environment: crate::pack_palette::Environment,
+        environment: horizon_polytone::colors::Environment,
    ) -> FogInputs<'a> {
        FogInputs {
            environment,
@@ -64,7 +64,7 @@ enum Writer {
    },
 }

-pub(crate) struct SpriteAnimator {
+pub(super) struct SpriteAnimator {
    sprites: Vec<Sprite>,
    groups: Vec<Group>,
    writer: Writer,
@@ -86,9 +86,6 @@ struct AnimationModes {
    day_time: i64,
    weather: f32,
    values: std::collections::HashMap<String, f64>,
-    /// The open screen (an identity the game picks) and the ticks it has been open.
-    screen: Option<u64>,
-    screen_time: i64,
 }

 impl AnimationModes {
@@ -119,15 +116,8 @@ impl super::Renderer {
        day_time: i64,
        [rain, thunder]: [f32; 2],
        frame: Option<&crate::environment::Frame>,
-        screen: Option<u64>,
    ) {
        let modes = &mut self.animations.modes;
-        // `screen_time`: a tick more while the same screen stays open, from 0 on a new one.
-        modes.screen_time = match (screen, modes.screen) {
-            (Some(open), Some(was)) if open == was => modes.screen_time + 1,
-            _ => 0,
-        };
-        modes.screen = screen;
        modes.day_time = day_time;
        modes.weather = rain + thunder;
        modes.values.clear();
@@ -143,16 +133,6 @@ impl super::Renderer {
 }

 impl SpriteAnimator {
-    /// What the modes read this frame, for the GUI atlas's sprites (their expressions aren't
-    /// compiled: those run on ticks).
-    pub(crate) fn mode_inputs(&self) -> horizon_assets::animation::ModeInputs<'static> {
-        horizon_assets::animation::ModeInputs {
-            day_time: self.modes.day_time,
-            screen_time: self.modes.screen_time,
-            weather: self.modes.weather,
-            expression: &|_| None,
-        }
-    }
    /// `textures` are the sprite arrays, `split` layers each, `size` pixels
    /// wide; `animations` hold their frames at that size. `compute`: whether
    /// the device says it runs compute shaders writing storage textures.
@@ -381,7 +361,6 @@ impl SpriteAnimator {
        let expression = |source: &str| values.get(source).copied();
        let inputs = horizon_assets::animation::ModeInputs {
            day_time: self.modes.day_time,
-            screen_time: self.modes.screen_time,
            weather: self.modes.weather,
            expression: &expression,
        };
@@ -136,8 +136,6 @@ impl Arena {
        } else {
            wgpu::BufferUsages::VERTEX
        };
-        // BLAS builds read sections' vertices here (`ray_scene`).
-        let usage = usage | super::surface_setup::ray_query::blas_input(device);
        Self::with_usage(device, stride, capacity, usage, PAGE_BYTES)
    }
    /// Sorted translucent indices; `storage` when compute passes read them.
@@ -1,42 +0,0 @@
-//! A bind group's validity depends on the identity of its buffers and the
-//! bound slice, not on the bytes written into those buffers.
-
-pub(super) struct BindingKey<B, const N: usize> {
-    pub first: u64,
-    pub count: u64,
-    pub buffers: [B; N],
-}
-
-impl<B: PartialEq, const N: usize> BindingKey<B, N> {
-    pub fn matches(&self, first: u64, count: u64, buffers: [&B; N]) -> bool {
-        self.first == first
-            && self.count == count
-            && self
-                .buffers
-                .iter()
-                .zip(buffers)
-                .all(|(old, new)| old == new)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn changes_to_any_resource_or_range_invalidate_the_binding() {
-        let key = BindingKey {
-            first: 16,
-            count: 8,
-            buffers: [1u64, 2, 3, 4],
-        };
-        assert!(key.matches(16, 8, [&1, &2, &3, &4]));
-        assert!(!key.matches(0, 8, [&1, &2, &3, &4]));
-        assert!(!key.matches(16, 9, [&1, &2, &3, &4]));
-        for i in 0..4 {
-            let mut resources = [1u64, 2, 3, 4];
-            resources[i] += 100;
-            assert!(!key.matches(16, 8, resources.each_ref()));
-        }
-    }
-}
@@ -1,164 +0,0 @@
-//! What the renderer holds, for status, soak tests and memory reports (`horizon-ctl memory`,
-//! `scene_replay --memory`): resident sections and far tiles, and the bytes of its largest
-//! GPU resources and of its per-section bookkeeping.
-
-use std::collections::HashMap;
-
-use super::{
-    Renderer, SectionGpu, SectionKey, TerrainVertex, arena, flat, lod, texture_bytes, visbuffer,
-};
-
-impl Renderer {
-    /// Sections with GPU buffers, for soak tests watching residency.
-    pub fn resident_sections(&self) -> usize {
-        self.sections.len()
-    }
-    /// Quads of the far terrain tiles with GPU buffers.
-    pub fn lod_quads(&self) -> u64 {
-        self.lods
-            .values()
-            .map(|tile| u64::from(tile.mesh.solid + tile.mesh.translucent))
-            .sum()
-    }
-    /// Tiles and quads of the far terrain tiles with GPU buffers, by level.
-    pub fn lod_levels(&self) -> Vec<[u64; 2]> {
-        let mut levels = Vec::new();
-        for (key, tile) in &self.lods {
-            let level = usize::from(key.level);
-            if levels.len() <= level {
-                levels.resize(level + 1, [0, 0]);
-            }
-            levels[level][0] += 1;
-            levels[level][1] += u64::from(tile.mesh.solid + tile.mesh.translucent);
-        }
-        levels
-    }
-    /// Whether solid quads go to the arena in the compact layout
-    /// (`packed_quads`), and whether far tiles' own records are on
-    /// (`lod::packed::far_packing`).
-    pub fn packed_layout(&self) -> [bool; 2] {
-        [self.packed_quads, crate::lod::packed::far_packing()]
-    }
-    /// Bytes of the arena the resident chunk sections hold, and of the one far
-    /// tiles hold: the same split `gpu_census` reports, for `status`, so the
-    /// compact layouts can be seen working.
-    pub fn vertex_bytes_split(&self) -> [u64; 2] {
-        let stride = std::mem::size_of::<TerrainVertex>() as u64;
-        let used = |s: &SectionGpu| (s.solid_slots + u64::from(s.translucent) * 4) * stride;
-        [
-            self.sections.values().map(used).sum(),
-            self.lods.values().map(|tile| used(&tile.mesh)).sum(),
-        ]
-    }
-    /// Bytes of the section vertex arenas' buffers, and of the vertices
-    /// resident sections hold in them.
-    pub fn section_vertex_bytes(&self) -> [u64; 2] {
-        let stride = std::mem::size_of::<TerrainVertex>() as u64;
-        let vertices: u64 = self
-            .sections
-            .values()
-            .chain(self.lods.values().map(|tile| &*tile.mesh))
-            .map(|s| s.solid_slots + u64::from(s.translucent) * 4)
-            .sum();
-        let translucent = self.translucent_arena.as_ref();
-        let arenas = self.arena.bytes() + translucent.map_or(0, arena::Arena::bytes);
-        [arenas, vertices * stride]
-    }
-    /// Bytes of the renderer's largest GPU resources, by name (`scene_replay --memory`):
-    /// the terrain arenas (their pages, and what resident sections and far tiles use of
-    /// them), the quad indices, the block sprites with their mips, the LabPBR maps, flat
-    /// draws' buffers and the visibility buffer's.
-    pub fn gpu_census(&self) -> Vec<(&'static str, u64)> {
-        let stride = std::mem::size_of::<TerrainVertex>() as u64;
-        let used = |s: &SectionGpu| (s.solid_slots + u64::from(s.translucent) * 4) * stride;
-        let textures = |t: &[wgpu::Texture]| t.iter().map(texture_bytes).sum::<u64>();
-        let translucent = self.translucent_arena.as_ref();
-        vec![
-            ("section_arena_pages", self.arena.bytes()),
-            (
-                "translucent_arena_pages",
-                translucent.map_or(0, arena::Arena::bytes),
-            ),
-            ("sorted_index_pages", self.sorted_indices.bytes()),
-            (
-                "near_section_vertices",
-                self.sections.values().map(used).sum(),
-            ),
-            (
-                "held_section_vertices",
-                self.hold
-                    .sections()
-                    .filter_map(|held| held.gpu.as_ref())
-                    .map(used)
-                    .sum(),
-            ),
-            (
-                "far_tile_vertices",
-                self.lods.values().map(|tile| used(&tile.mesh)).sum(),
-            ),
-            ("quad_indices", self.indices.size()),
-            ("block_sprites", textures(&self.sprite_textures)),
-            (
-                "pbr_maps",
-                self.pbr_maps
-                    .as_ref()
-                    .map_or(0, |maps| maps.iter().flatten().map(texture_bytes).sum()),
-            ),
-            (
-                "flat_draws",
-                self.flat.as_ref().map_or(0, flat::Flat::bytes),
-            ),
-            (
-                "visibility_buffer",
-                self.visbuf.as_ref().map_or(0, visbuffer::Visbuffer::bytes),
-            ),
-        ]
-    }
-    /// Device memory the backend's allocator holds, by the label of what holds
-    /// it, largest first, with its allocated and reserved totals (Vulkan and
-    /// DirectX 12; none on Metal and OpenGL) (`horizon-ctl memory`).
-    pub fn gpu_memory_by_label(&self) -> Option<(u64, u64, Vec<(String, u64)>)> {
-        let report = self.device.generate_allocator_report()?;
-        let mut by_label: HashMap<String, u64> = HashMap::new();
-        for a in report.allocations {
-            *by_label.entry(a.name).or_default() += a.size;
-        }
-        let mut labels: Vec<_> = by_label.into_iter().collect();
-        labels.sort_by(|a, b| b.1.cmp(&a.1).then_with(|| a.0.cmp(&b.0)));
-        Some((
-            report.total_allocated_bytes,
-            report.total_reserved_bytes,
-            labels,
-        ))
-    }
-    /// Heap bytes of the renderer's per-section bookkeeping (`horizon-ctl memory`):
-    /// resident sections, far tiles, block entities and light sources by section.
-    pub fn cpu_census(&self) -> [(&'static str, usize); 4] {
-        use std::mem::size_of;
-        let per_section = |map_len: usize, lists: usize| {
-            map_len * (size_of::<SectionKey>() + size_of::<Vec<([i32; 3], u32)>>() + 1)
-                + lists * size_of::<([i32; 3], u32)>()
-        };
-        let lists = |map: &crate::fast_hash::FxHashMap<SectionKey, Vec<([i32; 3], u32)>>| {
-            per_section(
-                map.capacity(),
-                map.values().map(Vec::capacity).sum::<usize>(),
-            )
-        };
-        let animated: usize = self
-            .sections
-            .values()
-            .map(|s| s.animated_layers.len() * size_of::<u16>())
-            .sum();
-        [
-            ("resident_sections", self.sections.heap_bytes() + animated),
-            (
-                "far_tiles",
-                self.lods.capacity()
-                    * (size_of::<crate::lod::TileKey>() + size_of::<lod::Tile>() + 1),
-            ),
-            ("block_entities", lists(&self.block_entities)),
-            ("light_sources", lists(&self.light_blocks)),
-        ]
-    }
-}
@@ -2,8 +2,8 @@
 //! and `secondaryBlockOutline` under a high contrast one): an outline its fragment shader colours
 //! or animates. Without one the outline draws natively (`vs_line` in terrain.wgsl).

-use crate::core_shader::{CoreProgram, Glue};
 use glam::Mat4;
+use horizon_shaders::{CoreProgram, Glue};

 /// The outline's edges (`pack_lines::layout`: start, end, ARGB colour and width per instance) as
 /// vanilla's lines: four vertices an edge, the start twice and the end twice, the side
@@ -425,7 +425,7 @@ mod tests {
            eprintln!("no GPU: skipping");
            return;
        };
-        let program = crate::core_shader::translate_core(LINES_VSH, RGB_FSH, &[], &include, &GLUE)
+        let program = horizon_shaders::translate_core(LINES_VSH, RGB_FSH, &[], &include, &GLUE)
            .expect("the shaders translate");
        assert_pack_coloured(&draw_edge(&device, &queue, &program));
    }
@@ -441,7 +441,7 @@ mod tests {
            include(id)
                .map(|text| text.replace("vec3 ModelOffset;", "vec3 ModelOffset;\n    vec4 More;"))
        };
-        let program = crate::core_shader::translate_core(LINES_VSH, RGB_FSH, &[], &bigger, &GLUE)
+        let program = horizon_shaders::translate_core(LINES_VSH, RGB_FSH, &[], &bigger, &GLUE)
            .expect("the shaders translate");
        assert!(CoreLines::new(&device, wgpu::TextureFormat::Rgba8Unorm, &program).is_none());
    }
@@ -470,11 +470,11 @@ mod tests {
            let (namespace, path) = id.split_once(':')?;
            std::fs::read_to_string(root.join(format!("assets/{namespace}/{path}"))).ok()
        };
-        let program = crate::core_shader::translate_core(&vertex, RGB_FSH, &[], &include, &GLUE)
+        let program = horizon_shaders::translate_core(&vertex, RGB_FSH, &[], &include, &GLUE)
            .expect("vanilla's vertex shader translates");
        // A pack that replaces only the vertex shader runs vanilla's fragment shader.
        let fragment = include("minecraft:shaders/core/rendertype_lines.fsh").unwrap();
-        let vanilla = crate::core_shader::translate_core(&vertex, &fragment, &[], &include, &GLUE)
+        let vanilla = horizon_shaders::translate_core(&vertex, &fragment, &[], &include, &GLUE)
            .expect("vanilla's fragment shader translates");
        let Some((device, queue)) = device() else {
            eprintln!("no GPU: skipping the draw");
@@ -3,8 +3,8 @@
 //! to the horizon or tints the night sky expects. Without one the sky draws natively (`fs_sky` in
 //! terrain.wgsl, stars.rs).

-use crate::core_shader::{CoreProgram, Glue};
 use glam::Mat4;
+use horizon_shaders::{CoreProgram, Glue};
 use wgpu::util::DeviceExt;

 /// `DefaultVertexFormat.POSITION`: the disc's and the stars' vertices.
@@ -325,7 +325,7 @@ mod tests {
        let fragment = "#version 330\n#include <minecraft:dynamictransforms.glsl>\n\
            layout(location = 0) out vec4 fragColor;\n\
            void main() {\n    fragColor = ColorModulator;\n}\n";
-        let program = crate::core_shader::translate_core(&vertex, fragment, &[], &include, &GLUE)
+        let program = horizon_shaders::translate_core(&vertex, fragment, &[], &include, &GLUE)
            .expect("the sky shaders translate");
        let instance = crate::gfx::test_gpu::instance();
        let Some((device, queue)) =
@@ -1,315 +0,0 @@
-//! A resource pack's `core/text` on world text, as vanilla 26.3's `TEXT_POLYGON_OFFSET` and
-//! `TEXT_SEE_THROUGH` draw text displays, name tags and their backgrounds.
-
-use crate::core_shader::{CoreProgram, Glue};
-use std::sync::Arc;
-
-/// The entity vertices' light bytes are sky then block; vanilla's `UV2` is block then sky.
-pub(crate) const WORLD_GLUE: Glue = Glue {
-    inputs: &[
-        ("Position", "vec3"),
-        ("Color", "vec4"),
-        ("UV0", "vec2"),
-        ("UV2", "ivec2"),
-    ],
-    prelude: "layout(location = 0) in vec3 hz_pos;\n\
-              layout(location = 1) in vec2 hz_uv;\n\
-              layout(location = 3) in vec4 hz_color;\n\
-              layout(location = 4) in uvec4 hz_light;",
-    setup: "Position = hz_pos; Color = hz_color; UV0 = hz_uv; UV2 = ivec2(hz_light.y, hz_light.x);",
-    finish: "",
-    vertex_id: "int(gl_VertexIndex)",
-};
-
-pub(crate) const SEE_THROUGH_GLUE: Glue = Glue {
-    inputs: &[("Position", "vec3"), ("Color", "vec4"), ("UV0", "vec2")],
-    prelude: "layout(location = 0) in vec3 hz_pos;\n\
-              layout(location = 1) in vec2 hz_uv;\n\
-              layout(location = 3) in vec4 hz_color;",
-    setup: "Position = hz_pos; Color = hz_color; UV0 = hz_uv;",
-    finish: "",
-    vertex_id: "int(gl_VertexIndex)",
-};
-
-#[derive(Default)]
-pub struct TextShaders {
-    pub gui: Option<Arc<CoreProgram>>,
-    pub world: Option<Arc<CoreProgram>>,
-    pub see_through: Option<Arc<CoreProgram>>,
-}
-
-#[derive(Clone, Copy)]
-pub(super) struct PackBlocks {
-    pub(super) globals: [u8; 48],
-    pub(super) fog: [f32; 6],
-}
-
-impl super::Renderer {
-    pub fn set_world_text_shaders(&mut self, shaders: &TextShaders) {
-        self.core_text = CoreText::new(
-            &self.device,
-            self.output.frame.format,
-            shaders.world.as_deref(),
-            shaders.see_through.as_deref(),
-            &self.entity_atlas,
-            (&self.lightmap_view, &self.lightmap_sampler),
-        );
-    }
-
-    pub(super) fn pack_blocks(
-        &self,
-        frame: &super::Frame,
-        fog: [f32; 4],
-        ends: [f32; 4],
-    ) -> PackBlocks {
-        let globals = crate::post_chain::Globals {
-            glint_alpha: frame.glint_alpha,
-            ..frame.post_effects.globals
-        };
-        let size = [self.config.width, self.config.height];
-        PackBlocks {
-            globals: globals.bytes(size, frame.post_effects.menu_blur_radius as i32),
-            fog: [fog[0], fog[1], fog[2], fog[3], ends[0], ends[1]],
-        }
-    }
-
-    pub(super) fn write_core_text(
-        &self,
-        pack: &PackBlocks,
-        view: &super::View,
-        pose: glam::Mat4,
-        jitter: glam::Mat4,
-        fog_color: [f32; 4],
-    ) {
-        let Some(core) = &self.core_text else {
-            return;
-        };
-        let data =
-            super::core_lines::uniforms(pack.globals, view, pose, jitter, 1.0, fog_color, pack.fog);
-        self.queue.write_buffer(&core.uniform, 0, &data);
-    }
-
-    pub(super) fn bind_world_text(
-        &self,
-        pass: &mut wgpu::RenderPass<'_>,
-        allowed: bool,
-        see_through: bool,
-    ) {
-        let pack = self
-            .core_text
-            .as_ref()
-            .filter(|_| allowed)
-            .and_then(|core| {
-                let pipeline = if see_through {
-                    core.see_through.as_ref()
-                } else {
-                    core.polygon_offset.as_ref()
-                };
-                Some((pipeline?, &core.group))
-            });
-        match pack {
-            Some((pipeline, group)) => {
-                pass.set_pipeline(pipeline);
-                pass.set_bind_group(0, group, &[]);
-            }
-            None => pass.set_bind_group(0, &self.entity_group, &[]),
-        }
-    }
-}
-
-const BLOCK_OFFSETS: [u64; 4] = [0, 256, 512, 768];
-const BLOCK_SIZES: [u64; 4] = [48, 64, 160, 48];
-
-pub(super) struct CoreText {
-    pub(super) polygon_offset: Option<wgpu::RenderPipeline>,
-    pub(super) see_through: Option<wgpu::RenderPipeline>,
-    pub(super) group: wgpu::BindGroup,
-    uniform: wgpu::Buffer,
-}
-
-impl CoreText {
-    pub(super) fn new(
-        device: &wgpu::Device,
-        format: wgpu::TextureFormat,
-        world: Option<&CoreProgram>,
-        see_through: Option<&CoreProgram>,
-        atlas: &wgpu::TextureView,
-        lightmap: (&wgpu::TextureView, &wgpu::Sampler),
-    ) -> Option<Self> {
-        if world.is_none() && see_through.is_none() {
-            return None;
-        }
-        let validation = device.push_error_scope(wgpu::ErrorFilter::Validation);
-        let internal = device.push_error_scope(wgpu::ErrorFilter::Internal);
-        let buffer = |binding| wgpu::BindGroupLayoutEntry {
-            binding,
-            visibility: wgpu::ShaderStages::VERTEX_FRAGMENT,
-            ty: wgpu::BindingType::Buffer {
-                ty: wgpu::BufferBindingType::Uniform,
-                has_dynamic_offset: false,
-                min_binding_size: wgpu::BufferSize::new(BLOCK_SIZES[binding as usize]),
-            },
-            count: None,
-        };
-        let texture = |binding| wgpu::BindGroupLayoutEntry {
-            binding,
-            visibility: wgpu::ShaderStages::VERTEX_FRAGMENT,
-            ty: wgpu::BindingType::Texture {
-                sample_type: wgpu::TextureSampleType::Float { filterable: true },
-                view_dimension: wgpu::TextureViewDimension::D2,
-                multisampled: false,
-            },
-            count: None,
-        };
-        let sampler = |binding| wgpu::BindGroupLayoutEntry {
-            binding,
-            visibility: wgpu::ShaderStages::VERTEX_FRAGMENT,
-            ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
-            count: None,
-        };
-        let layout = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
-            label: Some("Resource pack world text"),
-            entries: &[
-                buffer(0),
-                buffer(1),
-                buffer(2),
-                buffer(3),
-                texture(4),
-                sampler(5),
-                texture(8),
-                sampler(9),
-            ],
-        });
-        let uniform = device.create_buffer(&wgpu::BufferDescriptor {
-            label: Some("Resource pack world text uniforms"),
-            size: 1024,
-            usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
-            mapped_at_creation: false,
-        });
-        let glyphs = device.create_sampler(&wgpu::SamplerDescriptor {
-            label: Some("Resource pack world text glyphs"),
-            ..Default::default()
-        });
-        let mut resources: Vec<wgpu::BindGroupEntry> = (0..4)
-            .map(|i| wgpu::BindGroupEntry {
-                binding: i as u32,
-                resource: wgpu::BindingResource::Buffer(wgpu::BufferBinding {
-                    buffer: &uniform,
-                    offset: BLOCK_OFFSETS[i],
-                    size: wgpu::BufferSize::new(BLOCK_SIZES[i]),
-                }),
-            })
-            .collect();
-        resources.extend([
-            wgpu::BindGroupEntry {
-                binding: 4,
-                resource: wgpu::BindingResource::TextureView(atlas),
-            },
-            wgpu::BindGroupEntry {
-                binding: 5,
-                resource: wgpu::BindingResource::Sampler(&glyphs),
-            },
-            wgpu::BindGroupEntry {
-                binding: 8,
-                resource: wgpu::BindingResource::TextureView(lightmap.0),
-            },
-            wgpu::BindGroupEntry {
-                binding: 9,
-                resource: wgpu::BindingResource::Sampler(lightmap.1),
-            },
-        ]);
-        let group = device.create_bind_group(&wgpu::BindGroupDescriptor {
-            label: Some("Resource pack world text"),
-            layout: &layout,
-            entries: &resources,
-        });
-        let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
-            label: Some("Resource pack world text"),
-            bind_group_layouts: &[Some(&layout)],
-            ..Default::default()
-        });
-        let attributes = wgpu::vertex_attr_array![0=>Float32x3,1=>Float32x2,2=>Uint32,3=>Unorm8x4,4=>Uint8x4,5=>Snorm8x4,6=>Float32x2];
-        let buffers = [Some(wgpu::VertexBufferLayout {
-            array_stride: std::mem::size_of::<crate::mesher::Vertex>() as u64,
-            step_mode: wgpu::VertexStepMode::Vertex,
-            attributes: &attributes,
-        })];
-        let pipeline = |label, program: &CoreProgram, depth: wgpu::DepthStencilState| {
-            let module = |module: &naga::Module| {
-                device.create_shader_module(wgpu::ShaderModuleDescriptor {
-                    label: Some(label),
-                    source: wgpu::ShaderSource::Naga(std::borrow::Cow::Owned(module.clone())),
-                })
-            };
-            let (vertex, fragment) = (module(&program.vertex), module(&program.fragment));
-            device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
-                label: Some(label),
-                layout: Some(&pipeline_layout),
-                vertex: wgpu::VertexState {
-                    module: &vertex,
-                    entry_point: Some("main"),
-                    compilation_options: Default::default(),
-                    buffers: &buffers,
-                },
-                primitive: wgpu::PrimitiveState {
-                    cull_mode: Some(wgpu::Face::Back),
-                    ..Default::default()
-                },
-                depth_stencil: Some(depth),
-                multisample: Default::default(),
-                fragment: Some(wgpu::FragmentState {
-                    module: &fragment,
-                    entry_point: Some("main"),
-                    compilation_options: Default::default(),
-                    targets: &[Some(wgpu::ColorTargetState {
-                        format,
-                        blend: Some(wgpu::BlendState::ALPHA_BLENDING),
-                        write_mask: wgpu::ColorWrites::ALL,
-                    })],
-                }),
-                multiview_mask: None,
-                cache: None,
-            })
-        };
-        let depth = |write, compare, bias| wgpu::DepthStencilState {
-            format: wgpu::TextureFormat::Depth32Float,
-            depth_write_enabled: Some(write),
-            depth_compare: Some(compare),
-            stencil: Default::default(),
-            bias,
-        };
-        let offset = wgpu::DepthBiasState {
-            constant: 10,
-            slope_scale: 1.0,
-            clamp: 0.0,
-        };
-        let polygon_offset = world.map(|program| {
-            pipeline(
-                "Resource pack polygon offset text",
-                program,
-                depth(true, wgpu::CompareFunction::GreaterEqual, offset),
-            )
-        });
-        let see_through = see_through.map(|program| {
-            pipeline(
-                "Resource pack see-through text",
-                program,
-                depth(false, wgpu::CompareFunction::Always, Default::default()),
-            )
-        });
-        let internal = pollster::block_on(internal.pop());
-        if let Some(e) = internal.or(pollster::block_on(validation.pop())) {
-            log::warn!("the resource pack's world text shader is not used: {e}");
-            return None;
-        }
-        Some(Self {
-            polygon_offset,
-            see_through,
-            group,
-            uniform,
-        })
-    }
-}
-
-#[cfg(test)]
-mod tests;
@@ -1,201 +0,0 @@
-use super::*;
-
-fn device() -> Option<(wgpu::Device, wgpu::Queue)> {
-    let instance = crate::gfx::test_gpu::instance();
-    let adapter = pollster::block_on(instance.request_adapter(&Default::default())).ok()?;
-    pollster::block_on(adapter.request_device(&Default::default())).ok()
-}
-
-#[test]
-fn a_pack_text_shader_reads_the_light_as_vanilla_does() {
-    let Some((device, queue)) = device() else {
-        eprintln!("no GPU: skipping");
-        return;
-    };
-    let vsh = "#version 330\n#extension GL_ARB_separate_shader_objects : require\n\
-        layout(location = 0) in vec3 Position;\nlayout(location = 1) in vec4 Color;\n\
-        layout(location = 2) in vec2 UV0;\nlayout(location = 3) in ivec2 UV2;\n\
-        layout(location = 0) flat out ivec2 light;\n\
-        void main() { gl_Position = vec4(Position, 1.0); light = UV2; }\n";
-    let fsh = "#version 330\n#extension GL_ARB_separate_shader_objects : require\n\
-        layout(location = 0) flat in ivec2 light;\nlayout(location = 0) out vec4 fragColor;\n\
-        void main() { fragColor = vec4(vec2(light) / 255.0, 0.0, 1.0); }\n";
-    let program =
-        crate::core_shader::translate_core(vsh, fsh, &[], &|_| None, &WORLD_GLUE).unwrap();
-    const SIZE: u32 = 64;
-    let texture = |format, usage| {
-        device.create_texture(&wgpu::TextureDescriptor {
-            label: None,
-            size: wgpu::Extent3d {
-                width: SIZE,
-                height: SIZE,
-                depth_or_array_layers: 1,
-            },
-            mip_level_count: 1,
-            sample_count: 1,
-            dimension: wgpu::TextureDimension::D2,
-            format,
-            usage,
-            view_formats: &[],
-        })
-    };
-    let binding = wgpu::TextureUsages::TEXTURE_BINDING;
-    let atlas = texture(wgpu::TextureFormat::Rgba8Unorm, binding).create_view(&Default::default());
-    let sampler = device.create_sampler(&Default::default());
-    let text = CoreText::new(
-        &device,
-        wgpu::TextureFormat::Rgba8Unorm,
-        Some(&program),
-        None,
-        &atlas,
-        (&atlas, &sampler),
-    )
-    .expect("the pack's pipeline");
-    let target = wgpu::TextureUsages::RENDER_ATTACHMENT;
-    let color = texture(
-        wgpu::TextureFormat::Rgba8Unorm,
-        target | wgpu::TextureUsages::COPY_SRC,
-    );
-    let depth = texture(wgpu::TextureFormat::Depth32Float, target);
-    let light = 0x30 | (0xC0 << 8);
-    let corner = |x: f32, y: f32| crate::mesher::Vertex {
-        pos: [x, y, 0.5],
-        uv: [0.0; 2],
-        layer: 0,
-        color: u32::MAX,
-        light,
-        normal: [0; 4],
-        glint_uv: [0.0; 2],
-    };
-    let quad = [
-        corner(-1.0, -1.0),
-        corner(1.0, -1.0),
-        corner(1.0, 1.0),
-        corner(-1.0, -1.0),
-        corner(1.0, 1.0),
-        corner(-1.0, 1.0),
-    ];
-    let vertices = wgpu::util::DeviceExt::create_buffer_init(
-        &device,
-        &wgpu::util::BufferInitDescriptor {
-            label: None,
-            contents: bytemuck::cast_slice(&quad),
-            usage: wgpu::BufferUsages::VERTEX,
-        },
-    );
-    let read = device.create_buffer(&wgpu::BufferDescriptor {
-        label: None,
-        size: u64::from(SIZE * SIZE * 4),
-        usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
-        mapped_at_creation: false,
-    });
-    let mut encoder = device.create_command_encoder(&Default::default());
-    {
-        let color_view = color.create_view(&Default::default());
-        let depth_view = depth.create_view(&Default::default());
-        let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
-            label: None,
-            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
-                view: &color_view,
-                depth_slice: None,
-                resolve_target: None,
-                ops: wgpu::Operations {
-                    load: wgpu::LoadOp::Clear(wgpu::Color::TRANSPARENT),
-                    store: wgpu::StoreOp::Store,
-                },
-            })],
-            depth_stencil_attachment: Some(wgpu::RenderPassDepthStencilAttachment {
-                view: &depth_view,
-                depth_ops: Some(wgpu::Operations {
-                    load: wgpu::LoadOp::Clear(0.0),
-                    store: wgpu::StoreOp::Store,
-                }),
-                stencil_ops: None,
-            }),
-            ..Default::default()
-        });
-        pass.set_pipeline(text.polygon_offset.as_ref().unwrap());
-        pass.set_bind_group(0, &text.group, &[]);
-        pass.set_vertex_buffer(0, vertices.slice(..));
-        pass.draw(0..6, 0..1);
-    }
-    encoder.copy_texture_to_buffer(
-        color.as_image_copy(),
-        wgpu::TexelCopyBufferInfo {
-            buffer: &read,
-            layout: wgpu::TexelCopyBufferLayout {
-                offset: 0,
-                bytes_per_row: Some(SIZE * 4),
-                rows_per_image: Some(SIZE),
-            },
-        },
-        color.size(),
-    );
-    queue.submit([encoder.finish()]);
-    read.slice(..)
-        .map_async(wgpu::MapMode::Read, |r| r.unwrap());
-    device.poll(wgpu::PollType::wait_indefinitely()).unwrap();
-    let pixels = read.slice(..).get_mapped_range().unwrap().to_vec();
-    let middle = ((SIZE / 2 * SIZE + SIZE / 2) * 4) as usize;
-    assert_eq!(
-        &pixels[middle..middle + 4],
-        &[0xC0, 0x30, 0, 0xFF],
-        "UV2 is (block, sky)"
-    );
-}
-
-#[test]
-#[ignore = "requires prepared resources in HORIZON_TEST_RESOURCES or .local/horizon-client/26.3, and a GPU"]
-fn vanillas_text_shader_makes_both_world_text_pipelines() {
-    let root = std::env::var_os("HORIZON_TEST_RESOURCES")
-        .map(std::path::PathBuf::from)
-        .unwrap_or_else(|| {
-            std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
-                .join("../../.local/horizon-client")
-                .join(horizon_core::VANILLA_VERSION)
-        });
-    let read = |path: &str| std::fs::read_to_string(root.join(path)).ok();
-    let vertex = read("assets/minecraft/shaders/core/text.vsh").expect("vanilla's text.vsh");
-    let fragment = read("assets/minecraft/shaders/core/text.fsh").expect("vanilla's text.fsh");
-    let include = |id: &str| {
-        let (namespace, path) = id.split_once(':')?;
-        read(&format!("assets/{namespace}/{path}"))
-    };
-    let translate = |defines: &[&str], glue: &Glue| {
-        crate::core_shader::translate_core(&vertex, &fragment, defines, &include, glue)
-            .expect("vanilla's text shader translates")
-    };
-    let world = translate(&[], &WORLD_GLUE);
-    let see_through = translate(&["IS_SEE_THROUGH"], &SEE_THROUGH_GLUE);
-    let (device, _) = device().expect("a GPU");
-    let texture = || {
-        device
-            .create_texture(&wgpu::TextureDescriptor {
-                label: None,
-                size: wgpu::Extent3d {
-                    width: 4,
-                    height: 4,
-                    depth_or_array_layers: 1,
-                },
-                mip_level_count: 1,
-                sample_count: 1,
-                dimension: wgpu::TextureDimension::D2,
-                format: wgpu::TextureFormat::Rgba8Unorm,
-                usage: wgpu::TextureUsages::TEXTURE_BINDING,
-                view_formats: &[],
-            })
-            .create_view(&Default::default())
-    };
-    let (atlas, lightmap) = (texture(), texture());
-    let sampler = device.create_sampler(&Default::default());
-    let text = CoreText::new(
-        &device,
-        wgpu::TextureFormat::Rgba8Unorm,
-        Some(&world),
-        Some(&see_through),
-        &atlas,
-        (&lightmap, &sampler),
-    )
-    .expect("the pack's world text pipelines");
-    assert!(text.polygon_offset.is_some() && text.see_through.is_some());
-}
@@ -37,9 +37,7 @@
 //! are drawn in a pass of their own between the phases, which reads phase
 //! 1's depth as a texture and makes the same comparison in the shader: the
 //! fragment's depth against the stored one, greater or equal passing. The
-//! same fragments pass, so the same sections are seen. Adreno's Vulkan driver
-//! takes that path too: with the early test it now and then leaves sections
-//! out for a frame.
+//! same fragments pass, so the same sections are seen.
 use std::num::NonZeroU64;
 use std::sync::{
    Arc,
@@ -222,42 +220,17 @@ const RESULTS_USAGE: wgpu::BufferUsages =
 const READBACK_USAGE: wgpu::BufferUsages =
    wgpu::BufferUsages::MAP_READ.union(wgpu::BufferUsages::COPY_DST);

-/// The first `n` values of a packed lookup in WGSL `source` (`fn name`, as cull.wgsl's
-/// `box_triangle_corner`): four bits each, eight a word, its words in the order of its cases.
-#[cfg(test)]
-pub(super) fn packed_lookup(source: &str, name: &str, n: usize) -> Vec<u32> {
-    let body = &source[source.find(&format!("fn {name}(")).expect("the lookup")..];
-    let body = &body[..body.find("return").expect("its return")];
-    let words: Vec<u32> = body
-        .split(|c: char| !c.is_ascii_alphanumeric())
-        .filter_map(|t| t.strip_prefix("0x")?.strip_suffix('u'))
-        .map(|hex| u32::from_str_radix(hex, 16).expect("a hex word"))
-        .collect();
-    (0..n)
-        .map(|v| (words[v / 8] >> (v % 8 * 4)) & 0xf)
-        .collect()
-}
-
-/// Qualcomm's PCI vendor id, which wgpu reports for Adreno GPUs.
-const ADRENO: u32 = 0x5143;
-
 impl Cull {
    /// The device feature culling needs, where the adapter has it.
    pub fn features(adapter: &wgpu::Adapter) -> wgpu::Features {
        adapter.features() & wgpu::Features::SHADER_EARLY_DEPTH_TEST
    }
    /// Where the device can run the test, if it can: Vulkan with early
-    /// depth tests (Adreno's in the shader), or Metal and DirectX 12 with the
-    /// test in the shader, all drawing an indirect multi-draw's entries with
-    /// the instance counts the GPU wrote, with fragment shaders that write
-    /// storage.
+    /// depth tests, or Metal and DirectX 12 with the test in the shader, all
+    /// drawing an indirect multi-draw's entries with the instance counts the
+    /// GPU wrote, with fragment shaders that write storage.
    pub fn supported(adapter: &wgpu::Adapter, device: &wgpu::Device) -> Option<DepthTest> {
-        let info = adapter.get_info();
-        let depth_test = match info.backend {
-            // Adreno's Vulkan driver (the AYANEO Pocket DS's Adreno 740, build 0676.41) now and
-            // then leaves sections out with the early test, the world flashing black or
-            // see-through as a block breaks; the test in the shader, as on Metal, holds.
-            wgpu::Backend::Vulkan if info.vendor == ADRENO => DepthTest::InShader,
+        let depth_test = match adapter.get_info().backend {
            wgpu::Backend::Vulkan | wgpu::Backend::Gl
                if device
                    .features()
@@ -799,20 +772,4 @@ mod tests {
                .unwrap_or_else(|e| panic!("{depth_test:?}: {e:?}"));
        }
    }
-
-    /// The box's 12 triangles, as cull.wgsl and gpu_occlusion.wgsl draw them: two per face,
-    /// counter-clockwise seen from outside, corners by bit (x 1, y 2, z 4).
-    #[test]
-    fn the_packed_box_corners_are_the_box_triangles() {
-        let triangles = [
-            0, 6, 2, 0, 4, 6, 1, 3, 7, 1, 7, 5, 0, 1, 5, 0, 5, 4, 2, 7, 3, 2, 6, 7, 0, 3, 1, 0, 2,
-            3, 4, 5, 7, 4, 7, 6,
-        ];
-        for source in [
-            include_str!("cull.wgsl"),
-            include_str!("gpu_occlusion.wgsl"),
-        ] {
-            assert_eq!(packed_lookup(source, "box_triangle_corner", 36), triangles);
-        }
-    }
 }
@@ -34,21 +34,11 @@ struct Test {
@group(0) @binding(5) var<uniform> params: Params;

 // The corners (bit 0: x, bit 1: y, bit 2: z) of the box's 12 triangles,
-// counter-clockwise seen from outside: 0 6 2, 0 4 6, 1 3 7, 1 7 5, 0 1 5, 0 5 4,
-// 2 7 3, 2 6 7, 0 3 1, 0 2 3, 4 5 7, 4 7 6.
-// Packed four bits each, eight a word, read through a switch: a constant array indexed by the
-// vertex would be a private array, which Adreno's Vulkan compiler (build 0676.41) fails to link.
-fn box_triangle_corner(v: u32) -> u32 {
-    var word: u32;
-    switch v / 8u {
-        case 0u: { word = 0x31640260u; }
-        case 1u: { word = 0x05105717u; }
-        case 2u: { word = 0x76237245u; }
-        case 3u: { word = 0x54320130u; }
-        default: { word = 0x00006747u; }
-    }
-    return (word >> (v % 8u * 4u)) & 0xfu;
-}
+// counter-clockwise seen from outside.
+const CORNERS = array<u32, 36>(
+    0u, 6u, 2u, 0u, 4u, 6u, 1u, 3u, 7u, 1u, 7u, 5u, 0u, 1u, 5u, 0u, 5u, 4u,
+    2u, 7u, 3u, 2u, 6u, 7u, 0u, 3u, 1u, 0u, 2u, 3u, 4u, 5u, 7u, 4u, 7u, 6u,
+);

 struct Box {
    @builtin(position) position: vec4<f32>,
@@ -105,7 +95,7 @@ fn vs_box(@builtin(vertex_index) v: u32, @builtin(instance_index) t: u32) -> Box
        out.position = select(vec4(0.0, 0.0, 0.0, 1.0), vec4(p, 1.0, 1.0), v < 3u);
        return out;
    }
-    out.position = globals.view_proj * vec4(corner(origin, low, high, box_triangle_corner(v)), 1.0);
+    out.position = globals.view_proj * vec4(corner(origin, low, high, CORNERS[v]), 1.0);
    return out;
 }

@@ -1,11 +1,12 @@
-//! Custom sky layers (`crate::custom_sky`) on the GPU: one texture per layer, kept with the renderer (its pack),
+//! OptiFine custom sky layers on the GPU: one texture per layer, kept with the renderer (its pack),
 //! a static skybox mesh of the 3x2 grid's six faces, and one pipeline per blend mode. A frame
 //! uploads one small uniform per drawn layer ([`crate::custom_sky::Draw`]) and draws 36 vertices
 //! each, after the vanilla sky's disc and sunrise and before the sun, moon and stars.
 use glam::Mat4;
+use horizon_optifine::sky::{Blend, Face};
 use wgpu::util::DeviceExt;

-use crate::custom_sky::{Blend, Draw, SkyLayers};
+use crate::custom_sky::{CustomSky as Pack, Draw};

 /// The blend modes in the shader's `mode` order (custom_sky.wgsl).
 const MODES: [Blend; 9] = [
@@ -33,7 +34,7 @@ struct Uniform {
    mode: u32,
    pad: [u32; 2],
    hdr_settings: [f32; 4],
-    hdr_gains: [f32; 4],
+    hdr_shares: [f32; 4],
    hdr_light: [f32; 4],
 }

@@ -84,76 +85,6 @@ fn blend(mode: Blend) -> wgpu::BlendComponent {
    }
 }

-/// A face of the skybox, as the 3x2 grid of its texture holds them: `Bottom`, `Top`, `South` in
-/// the top row, `West`, `North`, `East` below.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-enum Face {
-    Bottom,
-    Top,
-    South,
-    West,
-    North,
-    East,
-}
-
-impl Face {
-    const ALL: [Self; 6] = [
-        Self::Bottom,
-        Self::Top,
-        Self::South,
-        Self::West,
-        Self::North,
-        Self::East,
-    ];
-
-    /// The face's cell of the texture, `[u0, v0, u1, v1]` in 0..1.
-    fn cell(self) -> [f32; 4] {
-        let (col, row) = match self {
-            Self::Bottom => (0, 0),
-            Self::Top => (1, 0),
-            Self::South => (2, 0),
-            Self::West => (0, 1),
-            Self::North => (1, 1),
-            Self::East => (2, 1),
-        };
-        let (u, v) = (col as f32 / 3.0, row as f32 / 2.0);
-        [u, v, u + 1.0 / 3.0, v + 0.5]
-    }
-
-    /// The face's corners (on the unit cube around the camera; x east, y up, z south) in the
-    /// order of its cell's `(u0, v0)`, `(u1, v0)`, `(u1, v1)`, `(u0, v1)`. The side faces are
-    /// seen from inside with up at the top of their cell; the top face has north at the bottom of
-    /// its cell, the bottom face north at the top (the template's `N` marks).
-    fn corners(self) -> [[f32; 3]; 4] {
-        match self {
-            // Seen looking north: west on the left.
-            Self::North => [
-                [-1., 1., -1.],
-                [1., 1., -1.],
-                [1., -1., -1.],
-                [-1., -1., -1.],
-            ],
-            Self::South => [[1., 1., 1.], [-1., 1., 1.], [-1., -1., 1.], [1., -1., 1.]],
-            Self::East => [[1., 1., -1.], [1., 1., 1.], [1., -1., 1.], [1., -1., -1.]],
-            Self::West => [
-                [-1., 1., 1.],
-                [-1., 1., -1.],
-                [-1., -1., -1.],
-                [-1., -1., 1.],
-            ],
-            // Looking up with north toward the cell's bottom edge: east on the right.
-            Self::Top => [[-1., 1., 1.], [1., 1., 1.], [1., 1., -1.], [-1., 1., -1.]],
-            // Looking down with north toward the cell's top edge: east on the right.
-            Self::Bottom => [
-                [-1., -1., -1.],
-                [1., -1., -1.],
-                [1., -1., 1.],
-                [-1., -1., 1.],
-            ],
-        }
-    }
-}
-
 /// The skybox's 36 vertices: two triangles per face, each corner with its cell's UV.
 fn mesh() -> Vec<Vertex> {
    let mut out = Vec::with_capacity(36);
@@ -174,12 +105,7 @@ fn mesh() -> Vec<Vertex> {
 }

 impl CustomSky {
-    /// The layers' pipelines for a frame of `format`, holding linear light where `linear`
-    /// (`linear_blend`).
-    pub(super) fn new(
-        device: &wgpu::Device,
-        (format, linear): (wgpu::TextureFormat, bool),
-    ) -> Self {
+    pub(super) fn new(device: &wgpu::Device, format: wgpu::TextureFormat) -> Self {
        let layout = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
            label: Some("Custom sky bindings"),
            entries: &[
@@ -266,7 +192,10 @@ impl CustomSky {
                            "fs_custom_sky"
                        }),
                        compilation_options: wgpu::PipelineCompilationOptions {
-                            constants: &super::linear_blend::frame_constants(format, linear),
+                            constants: &[(
+                                "HDR_WRITE_LIGHT",
+                                f64::from(u8::from(format == super::LINEAR_FRAME)),
+                            )],
                            ..Default::default()
                        },
                        targets: &[Some(wgpu::ColorTargetState {
@@ -327,15 +256,10 @@ impl CustomSky {
    }

    /// The pack's layer textures, replacing any before.
-    pub(super) fn set_pack(
-        &mut self,
-        device: &wgpu::Device,
-        queue: &wgpu::Queue,
-        pack: &dyn SkyLayers,
-    ) {
+    pub(super) fn set_pack(&mut self, device: &wgpu::Device, queue: &wgpu::Queue, pack: &Pack) {
        let limit = device.limits().max_texture_dimension_2d;
        self.groups = pack
-            .images()
+            .images
            .iter()
            .map(|image| {
                // Too large for this GPU: a 1x1 transparent texel, so the layer draws nothing.
@@ -407,7 +331,7 @@ impl CustomSky {
        self.written_gain = (globals.hdr_light[3] != 0.0).then(|| {
            let mark =
                ((1.0 - 0.24 * globals.hdr_light[1]).clamp(0.0, 1.0) * 255.0).round() / 255.0;
-            if globals.hdr_settings[2] > 0.5 {
+            if globals.hdr_settings[2] > 0.5 && globals.hdr_settings[0] > 1.0 {
                (1.0 + (globals.hdr_settings[1] - 1.0) * (1.0 - mark) / 0.24).powf(1.0 / 2.2)
            } else {
                1.0
@@ -428,7 +352,7 @@ impl CustomSky {
                mode: mode as u32,
                pad: [0; 2],
                hdr_settings: globals.hdr_settings,
-                hdr_gains: globals.hdr_gains,
+                hdr_shares: globals.hdr_shares,
                hdr_light: globals.hdr_light,
            };
            let offset = STRIDE * self.frame.len() as u64;
@@ -489,38 +413,6 @@ impl CustomSky {
 mod tests {
    use super::*;

-    #[test]
-    fn the_grid_holds_each_face_once_and_faces_point_out() {
-        let mut cells: Vec<_> = Face::ALL
-            .iter()
-            .map(|f| f.cell().map(|x| (x * 6.0) as i32))
-            .collect();
-        cells.dedup();
-        assert_eq!(cells.len(), 6);
-        assert_eq!(Face::East.cell(), [2.0 / 3.0, 0.5, 1.0, 1.0]);
-        for face in Face::ALL {
-            let c = face.corners();
-            let sub = |a: [f32; 3], b: [f32; 3]| [a[0] - b[0], a[1] - b[1], a[2] - b[2]];
-            let (a, b) = (sub(c[1], c[0]), sub(c[3], c[0]));
-            let n = [
-                a[1] * b[2] - a[2] * b[1],
-                a[2] * b[0] - a[0] * b[2],
-                a[0] * b[1] - a[1] * b[0],
-            ];
-            let centre: [f32; 3] =
-                std::array::from_fn(|i| c.iter().map(|p| p[i]).sum::<f32>() / 4.0);
-            // Seen from inside, u runs right and v down, so u x v points away from the camera.
-            let dot: f32 = (0..3).map(|i| n[i] * centre[i]).sum();
-            assert!(dot > 0.0, "{face:?} is mirrored");
-        }
-        // The top cell's bottom edge (v1) is north: its corners 2 and 3 have z = -1.
-        assert_eq!(Face::Top.corners()[2][2], -1.0);
-        assert_eq!(Face::Top.corners()[3][2], -1.0);
-        // The bottom cell's top edge (v0) is north.
-        assert_eq!(Face::Bottom.corners()[0][2], -1.0);
-        assert_eq!(Face::Bottom.corners()[1][2], -1.0);
-    }
-
    /// What a blend leaves a sky texel of `dst` with when the shader outputs `src`
    /// (custom_sky.wgsl) for a layer texel `t` at brightness `b`, per channel.
    fn mix(mode: Blend, dst: f32, t: f32, a: f32, b: f32) -> f32 {
@@ -619,7 +511,7 @@ mod tests {
            label: None,
            source: wgpu::ShaderSource::Wgsl(source.into()),
        });
-        let sky = CustomSky::new(&device, (wgpu::TextureFormat::Rgba16Float, false));
+        let sky = CustomSky::new(&device, wgpu::TextureFormat::Rgba16Float);
        let layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
            label: None,
            bind_group_layouts: &[Some(&sky.layout)],
@@ -663,37 +555,19 @@ mod tests {
        let view = target.create_view(&Default::default());
        // Independent scalar expectation: a sky mark of 206/255 gives this gamma gain.
        let hdr_gain = (1.0f32 + 3.0 * (1.0 - 206.0 / 255.0) / 0.24).powf(1.0 / 2.2);
-        // A frame of linear light (`FRAME_LINEAR`, `[frame] blend = "linear"`): the layer stored
-        // decoded, products kept exact.
-        let linear_modes = [
-            Blend::Replace,
-            Blend::Multiply,
-            Blend::Overlay,
-            Blend::Alpha,
-        ]
-        .map(|m| {
-            (
-                MODES.iter().position(|&n| n == m).unwrap(),
-                m,
-                false,
-                false,
-                true,
-            )
-        });
-        for (mode_index, mode, debug, written, linear) in MODES
+        for (mode_index, mode, debug, written) in MODES
            .iter()
            .copied()
            .enumerate()
-            .map(|(i, m)| (i, m, false, true, false))
-            .chain([(5, Blend::Screen, true, true, false)])
+            .map(|(i, m)| (i, m, false, true))
+            .chain([(5, Blend::Screen, true, true)])
            .chain(
                MODES
                    .iter()
                    .copied()
                    .enumerate()
-                    .map(|(i, m)| (i, m, false, false, false)),
+                    .map(|(i, m)| (i, m, false, false)),
            )
-            .chain(linear_modes)
        {
            let gain = if written { hdr_gain } else { 1.0 };
            let uniform = Uniform {
@@ -702,7 +576,7 @@ mod tests {
                mode: mode_index as u32,
                pad: [0; 2],
                hdr_settings: [5.0, 4.0, 1.0, f32::from(u8::from(debug))],
-                hdr_gains: [1.6, 2.4, 2.8, 4.0],
+                hdr_shares: [0.2, 0.5, 0.6, 1.0],
                hdr_light: [0.8, 0.8, 1.0, f32::from(u8::from(written))],
            };
            let buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
@@ -737,10 +611,7 @@ mod tests {
                        module: &shader,
                        entry_point: Some(entry),
                        compilation_options: wgpu::PipelineCompilationOptions {
-                            constants: &[
-                                ("HDR_WRITE_LIGHT", 1.0),
-                                ("FRAME_LINEAR", f64::from(u8::from(linear))),
-                            ],
+                            constants: &[("HDR_WRITE_LIGHT", 1.0)],
                            ..Default::default()
                        },
                        targets: &[Some(wgpu::ColorTargetState {
@@ -847,17 +718,7 @@ mod tests {
                (alpha - coverage).abs() < 0.001,
                "{mode:?}: alpha {alpha}, expected {coverage}"
            );
-            let decode = |v: f32| v.powf(2.2);
-            let expected = if linear {
-                // The sky under it is linear light, 2.0; the layer is gamma.
-                match mode {
-                    Blend::Replace => decode(t),
-                    Blend::Multiply => d * decode(1.0 + (t - 1.0) * k),
-                    Blend::Overlay => d * decode(2.0 * (0.5 + (t - 0.5) * k)),
-                    Blend::Alpha => decode(t) * k + d * (1.0 - k),
-                    _ => unreachable!(),
-                }
-            } else if debug {
+            let expected = if debug {
                let grey = (0.2126f32 * 0.8f32.powf(2.2)
                    + 0.7152 * 0.4f32.powf(2.2)
                    + 0.0722 * 0.2f32.powf(2.2))
@@ -878,11 +739,11 @@ mod tests {
            };
            assert!(
                (got - expected).abs() < 0.004,
-                "{mode:?} debug {debug} linear {linear}: {got} expected {expected}"
+                "{mode:?} debug {debug}: {got} expected {expected}"
            );
        }
        eprintln!(
-            "HDR custom sky GPU ran all nine modes with and without gain, plus debug Screen and four on linear light, checking RGB and coverage"
+            "HDR custom sky GPU ran all nine modes with and without gain, plus debug Screen, checking RGB and coverage"
        );
    }
 }
Author	SHA1	Message	Date
Horizon agentandClaude Opus 5.5	27740e2e8f	geometry.rs: GbuffersInputs only in its tests; lockfiles: the pipeline crate takes naga Co-Authored-By: Claude Opus 5.5 <[email protected]>	2026-11-09 16:46:06 +01:00
Horizon agentandClaude Opus 5.5	a7d211a1fc	Translated programs' types move to horizon-render-pipeline A translated program as the renderer builds pipelines from it (Program, ComputeProgram, Interface, Uniform, Sampler, Image, Target, Error, DRAW_UNIFORMS) and the vertex inputs the renderer offers it (GbuffersInputs, GeometryInputs, AlphaTest, WATER_MASK, WATER_PATCHES) move unchanged from horizon-shaders' translator, which re-exports them. The renderer's library code takes them from the engine crate. Layer plan M6. Co-Authored-By: Claude Opus 5.5 <[email protected]>	2026-11-09 16:42:43 +01:00
Ludovic Marie	7ae28b9d3e	Merge branch 'split/render-pipeline-stages' into split/render-pipeline-textures	2026-11-09 16:35:58 +01:00
Ludovic Marie	0b7d3f8105	Merge branch 'split/render-pipeline-config' into split/render-pipeline-stages	2026-11-09 16:35:02 +01:00
Horizon agentandClaude Opus 5.5	950c368a3c	Custom textures and render stages move to horizon-render-pipeline The textures a pipeline's programs read (CustomTexture, Texture, Texels, TextureSource, Dim, EVERY_STAGE) and the render stages they are told they draw in (RENDER_STAGES, render_stage) move unchanged from horizon-shaders, which still reads them from a pack and re-exports them. The renderer takes them from the engine crate. Layer plan M6. Co-Authored-By: Claude Opus 5.5 <[email protected]>	2026-11-09 16:24:07 +01:00
Horizon agentandClaude Opus 5.5	a6093def90	launcher and registry lockfiles: horizon-shader-api depends on horizon-render-pipeline Co-Authored-By: Claude Opus 5.5 <[email protected]>	2026-11-09 16:21:43 +01:00
Horizon agentandClaude Opus 5.5	80aa1a5b06	Cargo.lock: horizon-shader-api takes bytemuck through the pipeline crate Co-Authored-By: Claude Opus 5.5 <[email protected]>	2026-11-09 16:20:23 +01:00
Ludovic Marie	8da02c530e	Merge branch 'split/render-pipeline-config' into split/render-pipeline-stages	2026-11-09 16:20:23 +01:00
Horizon agentandClaude Opus 5.5	a23f327048	WGSL stage interface moves to horizon-render-pipeline The stages Horizon's own packs fill, their preludes, bindings and entry points (stages.rs), the frame uniform the renderer uploads (inputs.rs) and the API lines (Api) are the renderer's interface, so they move unchanged into the engine's pipeline crate. horizon-shader-api keeps reading, composing and checking packs against them and re-exports them under the same paths (launcher and registry unchanged). The renderer takes them from the engine crate. Layer plan M6. Co-Authored-By: Claude Opus 5.5 <[email protected]>	2026-11-09 15:58:12 +01:00