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android/platform/external/angle/7a37d3acf5
commit
7a37d3acf5329acfe32bb3ecfe49ea23ff2bfd06
[log]
author
Kenneth Russell <kbr@chromium.org>
Sun Jan 05 13:52:03 2020 -0800
committer
Commit Bot <commit-bot@chromium.org>
Thu Jan 09 23:58:27 2020 +0000
tree
f433232342d0bcf03f21e5df13f437bd8cd2e2bf
parent
697b2241a6c77113e27987c1f208512f772b8b0f [diff]
Work around Intel driver bug with CopyTex{Sub}Image2D/DeleteTextures.

Dependencies seem to be incorrectly tracked in some Intel OpenGL
drivers (on macOS specifically), causing crashes in glDeleteTextures
if a GL command buffer is being constructed where those textures are
destinations of CopyTexImage2D/CopyTexSubImage2D. Work around this bug
by flushing before texture deletion if CopyTex{Sub}Image have been
called recently. The tracking is only done on a per-context rather
than a per-device basis, but seems sufficient to work around the
problem as identified.

Tested both with new ANGLE test on affected hardware, and in WebKit's
ANGLE backend for WebGL. Works around the crash reported in
https://bugs.webkit.org/show_bug.cgi?id=205707 .

Bug: angleproject:4267
Change-Id: I2266a5590759f6a3f19080def08710ef4b66d463
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1987932
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
8 files changed
tree: f433232342d0bcf03f21e5df13f437bd8cd2e2bf
  1. android/
  2. build_overrides/
  3. doc/
  4. extensions/
  5. gni/
  6. include/
  7. infra/
  8. samples/
  9. scripts/
  10. src/
  11. third_party/
  12. tools/
  13. util/
  14. .clang-format
  15. .gitattributes
  16. .gitignore
  17. .gn
  18. .style.yapf
  19. .yapfignore
  20. additional_readme_paths.json
  21. AUTHORS
  22. BUILD.gn
  23. codereview.settings
  24. CONTRIBUTORS
  25. DEPS
  26. dotfile_settings.gni
  27. LICENSE
  28. OWNERS
  29. PRESUBMIT.py
  30. README.chromium
  31. README.md
  32. WATCHLISTS
README.md

ANGLE - Almost Native Graphics Layer Engine

The goal of ANGLE is to allow users of multiple operating systems to seamlessly run WebGL and other OpenGL ES content by translating OpenGL ES API calls to one of the hardware-supported APIs available for that platform. ANGLE currently provides translation from OpenGL ES 2.0 and 3.0 to desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Support for translation from OpenGL ES to Vulkan is underway, and future plans include compute shader support (ES 3.1) and MacOS support.

Level of OpenGL ES support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
OpenGL ES 2.0completecompletecompletecompletecompletein progress
OpenGL ES 3.0completecompletecompletein progress
OpenGL ES 3.1in progresscompletecompletein progress
OpenGL ES 3.2plannedplannedplanned

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
Windowscompletecompletecompletecompletecomplete
Linuxcompletecomplete
Mac OS Xcompletein progress
iOSplanned
Chrome OScompleteplanned
Androidcompletecomplete
Fuchsiain progress

ANGLE v1.0.772 was certified compliant by passing the ES 2.0.3 conformance tests in October 2011. ANGLE also provides an implementation of the EGL 1.4 specification.

ANGLE is used as the default WebGL backend for both Google Chrome and Mozilla Firefox on Windows platforms. Chrome uses ANGLE for all graphics rendering on Windows, including the accelerated Canvas2D implementation and the Native Client sandbox environment.

Portions of the ANGLE shader compiler are used as a shader validator and translator by WebGL implementations across multiple platforms. It is used on Mac OS X, Linux, and in mobile variants of the browsers. Having one shader validator helps to ensure that a consistent set of GLSL ES shaders are accepted across browsers and platforms. The shader translator can be used to translate shaders to other shading languages, and to optionally apply shader modifications to work around bugs or quirks in the native graphics drivers. The translator targets Desktop GLSL, Direct3D HLSL, and even ESSL for native GLES2 platforms.

Sources

ANGLE repository is hosted by Chromium project and can be browsed online or cloned with

git clone https://chromium.googlesource.com/angle/angle

Building

View the Dev setup instructions.

Contributing