Merge branch 'master' into p/split

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_ea9f71488b6e448da93d6c2dabf4879c

tests/games/noita-page-leg.sh

@@ -14,8 +14,12 @@
 # run on tier-1, and the number would mean nothing.
 #
 # The frozen inputs, in NOITA_LEG_DIR (default ~/gex-sandbox/scratch/W/gate-noitapage):
-#   base/   a W3 page tree (W's tree C, 2026-10-10: web/public/gex/nt/w3d.tar,
-#           Mesa, node_modules), never written in place, plus
+#   base/   a W3 page tree (W's tree C, 2026-10-10: Mesa, node_modules), never
+#           written in place, with web/public/gex/nt/w3d.tar, the W3 dist: tree
+#           C's, with the PE skeletons, winepe.wasm and wine{,.wasm} rebuilt from
+#           a wine-w3 commit and wine linked against a gex tree's gexgl.c
+#           (base/README.base gives the commits and the recipe; for gexgl alone,
+#           scratch/W/gate-noitapage/w3d-gexgl.sh), plus
 #           web/public/gex/nt/noita.tar: the W3 prefix at /pfx with
 #           port/seedpin's mod_config.xml in its save, xkb data, and the game at
 #           /g with mods/seedpin (NOITA_WORLD_SEED 1767225600), made by

tests/games/noita-page.mjs

@@ -39,6 +39,9 @@ const WORLD = 0x122374c;
 const IMAGE = 0x400000;
 // Minutes from the page's start to the world, at most (tier-1 or a hang).
 const worldBy = Number(process.env.NOITA_WORLD_BY_MIN || 12) * 60000;
+// Whether TREE's compositor hit-tests by input region (545564cb): the
+// click offset above depends on it.
+const inputRegions = readFileSync(`${tree}/web/src/compositor-worker.js`, 'utf8').includes('#takesInput');
 
 // noita.exe's PE signature and file header (24 bytes at e_lfanew: machine,
 // sections, link time stamp...), as mapped at its base.
@@ -141,10 +144,12 @@ for (;;) {
       // area is a GL subsurface there, which the page compositor hands the
       // pointer to with subsurface-local coordinates (it ignores the empty
       // input region Wine gives it), and Wine reads those as relative to the
-      // whole window: so the point is offset by the frame once more. When
-      // the compositor honours input regions, drop the second (3,29).
+      // whole window: so the point is offset by the frame once more. A
+      // compositor that honours input regions (545564cb, `#takesInput`)
+      // gives the window the pointer in its own coordinates: one (3,29).
       const st = steps.shift();
-      const x = w.x + 3 + 3 + st.x, y = w.y + 29 + 29 + st.y;
+      const [fx, fy] = inputRegions ? [3, 29] : [6, 58];
+      const x = w.x + fx + st.x, y = w.y + fy + st.y;
       console.log(`${secs()} s, frame ${n}: ${st.what} at ${x},${y} (window ${w.w}x${w.h}@${w.x},${w.y})`);
       await click(x, y);
       await grab(`step-${3 - steps.length}`);

web/build-demo.sh

@@ -254,13 +254,21 @@ cp "$PUB/rootfs/base.tar.zst" "$STAGE/rootfs/"
 # Mesa (the host's GL, gex_wgpu), fetched only when a GL program starts.
 if [ -f "$PUB/gex/gex-wgpu-replay.wasm" ]; then
     cp "$PUB/gex/gex-wgpu-replay.js" "$PUB/gex/gex-wgpu-replay.wasm" "$STAGE/gex/"
+    # And its cold part, when the build split it (web/mesa-split.py). Plain,
+    # not .zst: a miss before the prefetch has landed loads it with a
+    # synchronous XHR (web/gex-wgpu-split.js), which zfetch.js cannot decode,
+    # and without the file the static server answers index.html -- every GL
+    # client then failed its first cold call and never drew a frame.
+    if [ -f "$PUB/gex/gex-wgpu-replay.deferred.wasm" ]; then
+        wasm-tools strip "$PUB/gex/gex-wgpu-replay.deferred.wasm" -o "$STAGE/gex/gex-wgpu-replay.deferred.wasm"
+    fi
 else
     echo "  no web/public/gex/gex-wgpu-replay.wasm (web/build-all.sh --mp --gl-only): GL items will not draw" >&2
 fi
 [ -d "$PUB/pkgs" ] && cp -r "$PUB/pkgs" "$STAGE/"
 [ -d "$PUB/gex-apt" ] && cp -r "$PUB/gex-apt" "$STAGE/"
 before=0 stripped=0 packed=0
-for w in $(find "$STAGE/gex" -name '*.wasm' -not -path '*/cgen/*'); do
+for w in $(find "$STAGE/gex" -name '*.wasm' -not -path '*/cgen/*' -not -name '*.deferred.wasm'); do
     b=$(size "$w"); before=$((before + b))
     case ${w##*/} in
     seed*.wasm) wasm-tools strip -d '^\.debug' "$w" -o "$w.s" ;;  # keeps gex.* and name