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chromium / angle / angle / refs/heads/chromium/4534
commit1b680b772850bc830e20a05db0e5da9cb6069d37[log] [tgz]
authorShahbaz Youssefi <syoussefi@chromium.org>Thu Jun 03 02:04:45 2021
committerAngle LUCI CQ <angle-scoped@luci-project-accounts.iam.gserviceaccount.com>Sat Jun 05 04:36:49 2021
tree6d14205beac1f2cc50f30343829cd5b805933178
parent26a54260780773a8b5dc3998822d2ab2e27653e1 [diff]
Reland "Make SH_CLAMP_INDIRECT_ARRAY_BOUNDS do proper AST transformation"

This is a reland of a474fd7de769ae817db83490d410510cdbed75b2

The integer clamp used in this transformation is not available in es100
shaders, and float clamp is used instead.

Original change's description:
> Make SH_CLAMP_INDIRECT_ARRAY_BOUNDS do proper AST transformation
>
> This translator flag adds a clamp to non-literal indices to arrays.  Two
> strategies were provisioned, using the clamp intrinsic or a hand-written
> function.   The latter is ununsed in angle, chromium, firefox and
> webkit, so this change removes this option and uses the clamp intrinsic
> unconditionally.
>
> The clamp itself was added at output generation time with special flags
> set on the index node.  This is changed such that a proper AST
> transformation is done and no-special handling would be necessary.
>
> Bug: angleproject:4361
> Bug: angleproject:4889
> Change-Id: Ieccfd2c1c347563fb5282e9fa66d39304e62f2ca
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2935041
> Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

Bug: angleproject:4361
Bug: angleproject:4889
Change-Id: I9397ec7e6bdfb706c2a891b33fd3b2b79e883ccc
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2940902
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
28 files changed
tree: 6d14205beac1f2cc50f30343829cd5b805933178
  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 3.0completecompletecompletecompletein progress
OpenGL ES 3.1incompletecompletecompletecomplete
OpenGL ES 3.2in progressin progressin progress

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
Windowscompletecompletecompletecompletecomplete
Linuxcompletecomplete
Mac OS Xcompletein progress
iOSplanned
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 1.4 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, 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