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gerrit-public.fairphone.software / platform / external / angle / 679d118787e7dab0cfddc0d7339700539155990a
commit679d118787e7dab0cfddc0d7339700539155990a[log] [tgz]
authorCarl Woffenden <cwoffenden@gmail.com>Tue Jan 12 18:25:39 2021 +0100
committerCommit Bot <commit-bot@chromium.org>Mon Jan 18 16:58:37 2021 +0000
tree24340e60f9ae341164dc4ba1f332a8be3f1f5b45
parent68ac4e43aa67c4bac9df639d80079648ea86dbe9 [diff]
Fix to build with VS2019

When building with VS2019 (using is_clang=false) multiples of the
following error are given:

    ../../src/common/mathutil.cpp(75): error C4244: '=':
    conversion from 'double' to 'float', possible loss of data

(This is due to pow(), when passed an int for the second param, widens
the first param to a double then returns a double).

Since the code was being changed the opportunity was taken to:

    - add missing unit tests for the two 999E5 conversions
    - optimise out the common pow() functions

The unit tests were written against the original implementation, then
the optimisations added and verified against the original results.

Bug: angleproject:5521, dawn:602
Change-Id: Ic9e5eaedbe3fc7ceeed697898823b76dffcd989a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2624888
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
4 files changed
tree: 24340e60f9ae341164dc4ba1f332a8be3f1f5b45
  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. AUTHORS
  24. BUILD.gn
  25. codereview.settings
  26. CONTRIBUTORS
  27. DEPS
  28. dotfile_settings.gni
  29. LICENSE
  30. OWNERS
  31. PRESUBMIT.py
  32. README.chromium
  33. README.md
  34. 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
Fuchsiain progress

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