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chromium / angle / angle / b783fbc799922b43c0988c8686854da85330e679
commitb783fbc799922b43c0988c8686854da85330e679[log] [tgz]
authorShahbaz Youssefi <syoussefi@chromium.org>Sat May 11 03:16:17 2019
committerCommit Bot <commit-bot@chromium.org>Tue May 14 04:08:49 2019
treef820715ff217ce9bece5dcb11c040f7af7164c5f
parentf7033c55be3f088fa644134f9af92a1fa542ecc7 [diff]
Vulkan: Fix matrix uniforms

A piece of code shared with d3d was used to implement this feature.
However, we store the uniform data transposed and row-major in d3d to
accomodate the fact that matrix indexing in HLSL is the opposite of GLSL
(mat[row][col] in HLSL as opposed to mat[col][row] in GLSL).

There were two functions that copied the source matrix fields either as
column-major or source-major (corresponding to `transpose` false or true
respectively in glUniformMatrix*) into a row-major destination.  These
functions are refactored into one, which copies from any-major source to
any-major destination.  The HLSL backend uses the "to row-major" variant
and the Vulkan backend uses the "to column-major" variant.

Bug: angleproject:3198
Change-Id: I7254da4fbe6916af78c5906abcb82ca01674ab9f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1607541
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
6 files changed
tree: f820715ff217ce9bece5dcb11c040f7af7164c5f
  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. additional_readme_paths.json
  20. AUTHORS
  21. BUILD.gn
  22. codereview.settings
  23. CONTRIBUTORS
  24. DEPS
  25. dotfile_settings.gni
  26. LICENSE
  27. OWNERS
  28. PRESUBMIT.py
  29. README.chromium
  30. README.md
  31. 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 ESVulkan
OpenGL ES 2.0completecompletecompletecompletein progress
OpenGL ES 3.0completecompletein progressnot started
OpenGL ES 3.1not startedin progressin progressnot started

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkan
Windowscompletecompletecompletecompletein progress
Linuxcompletein progress
Mac OS Xin progress
Chrome OScompleteplanned
Androidcompletein 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