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android / platform / external / angle / 175d918a1fe67d66b4df5aa89c579e9bfd1fc828
commit175d918a1fe67d66b4df5aa89c579e9bfd1fc828[log] [tgz]
authorYuly Novikov <ynovikov@chromium.org>Sun Dec 16 19:53:23 2018 +0000
committerCommit Bot <commit-bot@chromium.org>Sun Dec 16 19:53:36 2018 +0000
tree1edd0656e6625ec10ce8f7bc98738219a24780ff
parentdd815b623e60a1e1550f328104ffcd7caf20fde1 [diff]
Revert "Load correct libGLESv2 on Linux and Mac."

This reverts commit dd815b623e60a1e1550f328104ffcd7caf20fde1.

Reason for revert: Broke https://luci-milo.appspot.com/p/chromium/builders/luci.chromium.ci/win-rel/8006

Original change's description:
> Load correct libGLESv2 on Linux and Mac.
> 
> libEGL was implicitly loading libGLESv2 on startup. This is bad
> because on platforms like Linux and Mac we could sometimes use the
> incorrect rpath. This in turn meant we needed workarounds like using
> "_angle" extensions to our shared objects to get the correct loading
> behaviour.
> 
> Fix this by loading libGLESv2 dynamically in libEGL. We build the
> loader automatically from egl.xml. The loader itself is lazily
> initialized on every EGL entry point call. This is necessary because
> on Linux, etc, there is no equivalent to Windows' DLLMain.
> 
> We also use an EGL.h with different generation options so we have the
> proper function pointer types. A README is included for instructions
> on how to regenerate EGL.h.
> 
> The entry point generation script is refactored into a helper class
> that is used in the loader generator. Also adds the libGLESv2 versions
> of the EGL entry points in the DEF file on Windows. This allows them to
> be imported properly in 32-bit configurations.
> 
> Also fixes up some errors in ANGLE's entry point definitions. Also
> includes a clang-format disable rule for the Khronos headers.
> 
> This CL will help us to run ANGLE tests against native drivers.
> 
> Bug: angleproject:2871
> Change-Id: Id6ecf969308f17b1be4083538428c9c1a1836572
> Reviewed-on: https://chromium-review.googlesource.com/c/1370725
> Commit-Queue: Jamie Madill <jmadill@chromium.org>
> Reviewed-by: Geoff Lang <geofflang@chromium.org>

TBR=ynovikov@chromium.org,geofflang@chromium.org,jmadill@chromium.org

Change-Id: I921b3c45435ab4f05cbc2d1c1172b4185d6257b0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:2871
Reviewed-on: https://chromium-review.googlesource.com/c/1378887
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
45 files changed
tree: 1edd0656e6625ec10ce8f7bc98738219a24780ff
  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. additional_readme_paths.json
  19. AUTHORS
  20. BUILD.gn
  21. codereview.settings
  22. CONTRIBUTORS
  23. DEPS
  24. dotfile_settings.gni
  25. LICENSE
  26. OWNERS
  27. README.chromium
  28. 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
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