[go: up one dir, main page]
Google Git
Sign in
chromium / angle / angle / refs/heads/chromium/3626
commit9d164ca471cfe79b4a13357d941c02a69757df70[log] [tgz]
authorShahbaz Youssefi <syoussefi@chromium.org>Thu Jan 10 17:46:16 2019
committerShahbaz Youssefi <syoussefi@chromium.org>Fri Feb 08 21:32:16 2019
tree203739a9673e517297db980516c15a17c237607a
parenta6992f2f25d7b4054e6138bb20e86ffcfb90f9a2 [diff]
Make BlobCache use independent from ANGLE_program_cache_control

The decision to enable caching or not was based on the size of the cache
as directed by eglProgramCacheResizeANGLE, which is incorrect for
applications that only use the ANDROID_blob_cache extension.

The new behavior is as follows:

- If EGL_CONTEXT_PROGRAM_BINARY_CACHE_ENABLED_ANGLE is specifically
  requested and set to true, but the size of the cache is 0, caching is
  disabled for the context.
- If EGL_CONTEXT_PROGRAM_BINARY_CACHE_ENABLED_ANGLE is specifically
  requested and set to false, caching is disabled for the context.
- Otherwise, caching is left enabled for the context, although the cache
  possibly has a size of zero, which effectively disables it.  During
  application execution, if the blob cache callbacks are set, the
  application cache will be used.

Approved for merge into M72: https://bugs.chromium.org/p/chromium/issues/detail?id=896406#c29

Bug: 896406, angleproject:2516
Change-Id: Ic0cabda03fb6bf53994e86e3ede30afc8021d67e
Reviewed-on: https://chromium-review.googlesource.com/c/1405708
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
(cherry picked from commit 37d2e606c6000985f886a8575526cc3a8cd930b6)
Reviewed-on: https://chromium-review.googlesource.com/c/1459604
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
5 files changed
tree: 203739a9673e517297db980516c15a17c237607a
  1. build_overrides/
  2. doc/
  3. extensions/
  4. gni/
  5. include/
  6. infra/
  7. samples/
  8. scripts/
  9. src/
  10. third_party/
  11. tools/
  12. util/
  13. .clang-format
  14. .gitattributes
  15. .gitignore
  16. .gn
  17. additional_readme_paths.json
  18. AndroidManifest.xml
  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