gecko-dev/gfx/wr
Jamie Nicol 90f29c4458 Bug 1720841 - Clamp loop condition variable to static value in cs_blur. r=gw
In the cs_blur fragment shader there is a for loop with a number of
iterations determined by a flat varying. On some old Adreno drivers
this causes severe issues including hangs and crashes. These can be
avoided by clamping the number of iterations to a statically known
value.

Differential Revision: https://phabricator.services.mozilla.com/D120281
2021-07-19 21:17:07 +00:00
..
ci-scripts
example-compositor Bug 1719367 - Hook up default clear color to RenderCompositorLayersSWGL. r=sotaro 2021-07-08 11:46:37 +00:00
examples Bug 1720624 - Remove WrSpaceAndClip type r=nical 2021-07-18 22:32:27 +00:00
glsl-to-cxx Bug 1459526 - Handle full-range video in Webrender. r=gw,lsalzman 2021-06-25 19:16:22 +00:00
peek-poke
swgl Bug 1459526 - Handle full-range video in Webrender. r=gw,lsalzman 2021-06-25 19:16:22 +00:00
tileview
webrender Bug 1720841 - Clamp loop condition variable to static value in cs_blur. r=gw 2021-07-19 21:17:07 +00:00
webrender_api Bug 1720624 - Remove WrSpaceAndClip type r=nical 2021-07-18 22:32:27 +00:00
webrender_build
wr_malloc_size_of
wrench Bug 1720624 - Remove WrSpaceAndClip type r=nical 2021-07-18 22:32:27 +00:00
.gitignore
.taskcluster.yml
Cargo.lock
Cargo.toml
LICENSE
README.md
rustfmt.toml
servo-tidy.toml

WebRender

Version

WebRender is a GPU-based 2D rendering engine written in Rust. Firefox, the research web browser Servo, and other GUI frameworks draw with it. It currently uses the OpenGL API internally.

Note that the canonical home for this code is in gfx/wr folder of the mozilla-central repository at https://hg.mozilla.org/mozilla-central. The Github repository at https://github.com/servo/webrender should be considered a downstream mirror, although it contains additional metadata (such as Github wiki pages) that do not exist in mozilla-central. Pull requests against the Github repository are still being accepted, although once reviewed, they will be landed on mozilla-central first and then mirrored back. If you are familiar with the mozilla-central contribution workflow, filing bugs in Bugzilla and submitting patches there would be preferred.

Update as a Dependency

After updating shaders in WebRender, go to servo and:

  • Go to the servo directory and do ./mach update-cargo -p webrender
  • Create a pull request to servo

Use WebRender with Servo

To use a local copy of WebRender with servo, go to your servo build directory and:

  • Edit Cargo.toml
  • Add at the end of the file:
[patch."https://github.com/servo/webrender"]
"webrender" = { path = "<path>/webrender" }
"webrender_api" = { path = "<path>/webrender_api" }

where <path> is the path to your local copy of WebRender.

  • Build as normal

Documentation

The Wiki has a few pages describing the internals and conventions of WebRender.

Testing

Tests run using OSMesa to get consistent rendering across platforms.

Still there may be differences depending on font libraries on your system, for example.

See this gist for how to make the text tests useful in Fedora, for example.