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chromium / angle / angle / 3de2703d83bf9f3747e6f80d98e3ab70ea1ba5e8
commit3de2703d83bf9f3747e6f80d98e3ab70ea1ba5e8[log] [tgz]
authorOlli Etuaho <oetuaho@nvidia.com>Thu Nov 30 10:16:47 2017
committerCommit Bot <commit-bot@chromium.org>Mon Dec 04 20:31:47 2017
treef03e6b0725692e0550e008cb08906c9f6c4b1ee6
parentbf0a40bbcd6ef80e77073f641d4d9f9817908eeb [diff]
Fix handling matrix qualifiers on block members

Individual block member row_major/column_major layout qualifiers may
override the qualifiers set on the block. During parsing, this was
already being handled correctly, so that the qualifier is resolved for
each block member and recorded for each TField / InterfaceBlockField.

Now we always write the qualifiers on a per-member granularity to the
output GLSL shaders, so that the native driver gets the correct
per-member qualifiers. This replaces earlier behavior where the matrix
qualifiers were only written per-block.

Also only use qualifiers from individual members in block layout.

Since the block-level qualifier information is no longer used after
parsing, it is no longer kept in the AST. A dummy value is still set
to the InterfaceBlock structs exposed through the ShaderVars
interface, since that has existing usage in Chromium that needs to be
removed before the field can be removed.

Some AMD OpenGL drivers don't seem to handle matrix layout qualifiers
correctly, so most of the added tests need to be skipped for AMD GL.
On NVIDIA and Intel the tests pass.

BUG=angleproject:2271
TEST=angle_unittests, angle_end2end_tests,
     dEQP-GLES31.functional.program_interface_query.uniform.matrix*

Change-Id: I1baa7a633bc2da548743c2190cb72db491b5227a
Reviewed-on: https://chromium-review.googlesource.com/800174
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
14 files changed
tree: f03e6b0725692e0550e008cb08906c9f6c4b1ee6
  1. build_overrides/
  2. doc/
  3. extensions/
  4. gni/
  5. gyp/
  6. include/
  7. infra/
  8. samples/
  9. scripts/
  10. src/
  11. third_party/
  12. util/
  13. .clang-format
  14. .gitattributes
  15. .gitignore
  16. .gn
  17. AUTHORS
  18. BUILD.gn
  19. codereview.settings
  20. CONTRIBUTORS
  21. DEPS
  22. DEPS.chromium
  23. LICENSE
  24. OWNERS
  25. README.chromium
  26. README.md
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
Linuxcompleteplanned
Mac OS Xin progress
Chrome OScompleteplanned
Androidcompleteplanned

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. For generating a Windows Store version of ANGLE view the Windows Store instructions

Contributing