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android / platform / external / angle / fb94831942234845151c879b596be438bce996a6
commitfb94831942234845151c879b596be438bce996a6[log] [tgz]
authorKenneth Russell <kbr@chromium.org>Tue Jan 31 18:16:41 2023 +0000
committerAngle LUCI CQ <angle-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Jan 31 18:18:30 2023 +0000
tree8d8b7ba96eb380d97356e15c066e7b45794ccfc1
parent6712c48e1ddd1e305674038d382344e20df83804 [diff]
Revert "Metal: rewrite default uniforms and uniform blocks"

This reverts commit b8bfe6f6c04a6cf4fac81f0363ad23a0b92b22f2.

Reason for revert: potential cause of crashes/timeouts in crbug.com/1411755

Original change's description:
> Metal: rewrite default uniforms and uniform blocks
>
> Instead of rewriting uniforms in shaders to match std140 layout,
> re-pack incoming uniform blocks' std140 packed variables to match
> Metal's layout.
>
> This change intorduces a new BlockLayoutEncoder for Metal types
> The block encoder handles packing typically larger GL types (bools)
> into smaller types, and adding support for more compressed matrix types.
>
> Since we no longer need to do shader-time packing and unpacking of data
> from std140 padded structs, complicated shader transformations have been
> removed. This patch greatly reduces register pressure, especially when
> working with shaders with arrays of previously expanded types. (Vec3's)
>
> Bug: angleproject:7137
> Change-Id: Icd1da8c7a383f3354313a58618fc1bf6656726b4
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3733524
> Commit-Queue: Kyle Piddington <kpiddington@apple.com>
> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
> Reviewed-by: Kenneth Russell <kbr@chromium.org>

Bug: angleproject:7137
Bug: chromium:1411755
Change-Id: I1b6a62d7eb542c3e7ef4b84858ab2683abb66f8b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4210448
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
24 files changed
tree: 8d8b7ba96eb380d97356e15c066e7b45794ccfc1
  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. .vpython
  20. .vpython3
  21. .yapfignore
  22. additional_readme_paths.json
  23. Android.mk
  24. AUTHORS
  25. BUILD.gn
  26. codereview.settings
  27. CONTRIBUTORS
  28. DEPS
  29. DIR_METADATA
  30. dotfile_settings.gni
  31. LICENSE
  32. OWNERS
  33. PRESUBMIT.py
  34. README.chromium
  35. README.md
  36. 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, 3.0 and 3.1 to Vulkan, desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Future plans include ES 3.2, translation to Metal and MacOS, Chrome OS, and Fuchsia support.

Level of OpenGL ES support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
OpenGL ES 2.0completecompletecompletecompletecompletecomplete
OpenGL ES 3.0completecompletecompletecompletecomplete
OpenGL ES 3.1incompletecompletecompletecomplete
OpenGL ES 3.2in progressin progressin progress

Additionally, OpenGL ES 1.1 is implemented in the front-end using OpenGL ES 3.0 features. This version of the specification is thus supported on all platforms specified above that support OpenGL ES 3.0 with known issues.

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
Windowscompletecompletecompletecompletecomplete
Linuxcompletecomplete
Mac OS Xcompletecomplete
iOScomplete
Chrome OScompleteplanned
Androidcompletecomplete
GGP (Stadia)complete
Fuchsiacomplete

ANGLE v1.0.772 was certified compliant by passing the OpenGL ES 2.0.3 conformance tests in October 2011.

ANGLE has received the following certifications with the Vulkan backend:

  • OpenGL ES 2.0: ANGLE 2.1.0.d46e2fb1e341 (Nov, 2019)
  • OpenGL ES 3.0: ANGLE 2.1.0.f18ff947360d (Feb, 2020)
  • OpenGL ES 3.1: ANGLE 2.1.0.f5dace0f1e57 (Jul, 2020)

ANGLE also provides an implementation of the EGL 1.5 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, Vulkan 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