Add EGL_WINDOW_BIT to all Ozone configs' EGL_SURFACE_TYPE

Ozone's EGL windows are emulated, so we can always create one,
thus setting EGL_WINDOW_BIT in all configs is safe.

This is now required because in
EGL_WINDOW_BIT becomes a requirement to be able to run tests.

Previously Ozone's configs copied native EGL_SURFACE_TYPE,
which was either 0 or having just EGL_PBUFFER_BIT.

Bug: chromium:1181952, chromium:1034840
Change-Id: Ic2b14b43b3c32b47ea05d9d8da9fba7439f14d19
Reviewed-by: Shahbaz Youssefi <>
Commit-Queue: Yuly Novikov <>
4 files changed
tree: 8033a0e7ffb4f5366528f6fff59fd05ed61f33fe
  1. .clang-format
  2. .gitattributes
  3. .gitignore
  4. .gn
  5. .style.yapf
  6. .vpython
  7. .vpython3
  8. .yapfignore
  12. DEPS
  15. OWNERS
  17. README.chromium
  20. additional_readme_paths.json
  21. android/
  22. build_overrides/
  23. codereview.settings
  24. doc/
  25. dotfile_settings.gni
  26. extensions/
  27. gni/
  28. include/
  29. infra/
  30. samples/
  31. scripts/
  32. src/
  33. third_party/
  34. tools/
  35. util/

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, 3.0 and 3.1 to Vulkan, desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Future plans include ES 3.2, translation to Metal and MacOS, Chrome OS, and Fuchsia support.

Level of OpenGL ES support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
OpenGL ES 2.0completecompletecompletecompletecompletecomplete
OpenGL ES 3.0completecompletecompletecompletein progress
OpenGL ES 3.1incompletecompletecompletecomplete
OpenGL ES 3.2in progressin progressin progress

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
Mac OS Xcompletein progress
Chrome OScompleteplanned
GGP (Stadia)complete

ANGLE v1.0.772 was certified compliant by passing the OpenGL ES 2.0.3 conformance tests in October 2011.

ANGLE has received the following certifications with the Vulkan backend:

  • OpenGL ES 2.0: ANGLE 2.1.0.d46e2fb1e341 (Nov, 2019)
  • OpenGL ES 3.0: ANGLE 2.1.0.f18ff947360d (Feb, 2020)
  • OpenGL ES 3.1: ANGLE 2.1.0.f5dace0f1e57 (Jul, 2020)

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, Vulkan GLSL, Direct3D HLSL, and even ESSL for native GLES2 platforms.


ANGLE repository is hosted by Chromium project and can be browsed online or cloned with

git clone


View the Dev setup instructions.