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History

Nicolas Silva 05cdd4de3a Bug 1647035 - Avoid incorrect font variation initialization. r=gw,lsalzman The bug doesn't affect every user. It at least affects fedora users running freetype 2.10.2 with the system font Cantarell regular. If FT_Get_Var_Design_Coordinates isn't called on the original FT_Face before FT_Set_Var_Design_Coordinates is called, the new font face with variations gets into an invalid state, causing FT_Load_Glyph to fail with the Invalid font error (0x3). FT_Get_Var_Design_Coordinates was not called on the parent/gpu process because it is done on a face built from the same font on the content process. The workaround is to call it and ignore the result. Differential Revision: https://phabricator.services.mozilla.com/D91306		2020-09-25 08:58:56 +00:00
..
ci-scripts	Bug 1661117 - Follow-up to update standalone WR CI for osmesa-src bump. r=kvark	2020-09-16 18:02:45 +00:00
debugger
direct-composition
example-compositor
examples
glsl-to-cxx	Bug 1664282 - Use span buffering for SWGL depth testing. r=jimb	2020-09-22 23:23:10 +00:00
peek-poke
swgl	Bug 1666119 - Clip the last band to the dest bounds. r=lsalzman	2020-09-23 13:09:43 +00:00
tileview
webrender	Bug 1647035 - Avoid incorrect font variation initialization. r=gw,lsalzman	2020-09-25 08:58:56 +00:00
webrender_api
webrender_build	Bug 1658815 - Support all texture target types for the cs_scale shader. r=gw	2020-09-25 05:30:29 +00:00
wr_malloc_size_of
wrench	Bug 1664719 - Pt 4 - Create a new slice if shared clips are incompatible. r=nical	2020-09-23 23:22:01 +00:00
.gitignore
.taskcluster.yml	Bug 1661117 - Follow-up to update standalone WR CI for osmesa-src bump. r=kvark	2020-09-16 18:02:45 +00:00
Cargo.lock
Cargo.toml
LICENSE
README.md
rustfmt.toml
servo-tidy.toml

README.md

WebRender

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.