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chromium / angle / angle / refs/heads/chromium/3061
commitfe48632f2f47f9513c0557c331a8f346ed92c82d[log] [tgz]
authorOlli Etuaho <oetuaho@nvidia.com>Tue Mar 21 09:30:54 2017
committerCommit Bot <commit-bot@chromium.org>Thu Mar 30 10:16:35 2017
tree65a56dd6039c5860b7bdb731f7567b26864225a0
parent76e6565e23d8f01146a31a75b8acf7ff30b638c6 [diff]
Prefer identifying functions by using symbol ids

The shader translator code is now structured in a way that ensures
that all function definition, function prototype and function call
nodes store the integer symbol id for the function. This is guaranteed
regardless of whether the function node is added while parsing or as a
result of an AST transformation. TIntermAggregate nodes, which include
function calls and constructors can now only be created by calling one
of the TIntermAggregate::Create*() functions to ensure they have all
the necessary properties.

This makes it possible to keep track of functions using integer ids
instead of their mangled name strings when generating the call graph
and when using TLValueTrackingTraverser.

This commit includes a few other small cleanups to the CallDAG class
as well.

BUG=angleproject:1490
TEST=angle_unittests, angle_end2end_tests

Change-Id: Idd1013506cbe4c3380e20d90524a9cd09b890259
Reviewed-on: https://chromium-review.googlesource.com/459603
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
16 files changed
tree: 65a56dd6039c5860b7bdb731f7567b26864225a0
  1. doc/
  2. extensions/
  3. gni/
  4. gyp/
  5. include/
  6. infra/
  7. samples/
  8. scripts/
  9. src/
  10. third_party/
  11. util/
  12. .clang-format
  13. .gitattributes
  14. .gitignore
  15. AUTHORS
  16. BUILD.gn
  17. codereview.settings
  18. CONTRIBUTORS
  19. DEPS
  20. DEPS.chromium
  21. LICENSE
  22. README.chromium
  23. 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