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chromium / angle / angle / refs/heads/chromium/6087
commit4b59e4c6fa6aa7ebe98b2031971714bfdcb76dd5[log] [tgz]
authorYuxin Hu <yuxinhu@google.com>Wed Oct 18 00:47:20 2023
committerAngle LUCI CQ <angle-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Oct 23 22:14:46 2023
tree3906835ce5f03024a84c2e759713cc3097f8c781
parente4a267e517daab70a0d4549a80a89d31c53f686e [diff]
Add a test to check glReadPixels format and type

In GLES 3.2 spec
https://registry.khronos.org/OpenGL/specs/es/3.2/es_spec_3.2.pdf,
section 16.1.2, it says the following glReadPixels type
and format should work:

The second is an implementation-chosen format from
those defined in table 8.2... The values of format and
type for this format may be determined by calling
GetIntegerv with the symbolic constants
IMPLEMENTATION_COLOR_READ_FORMAT and
IMPLEMENTATION_COLOR_READ_TYPE, respectively.
The implementation-chosen format may vary depending
on the format of the selected read buffer of the
currently bound read framebuffer.

Add a test to check that when reading from the default
framebuffer, using the format and type retrieved from
IMPLEMENTATION_COLOR_READ_FORMAT and
IMPLEMENTATION_COLOR_READ_TYPE works.

Bug: b/306256081
Change-Id: I1e94087aac8c803bcc5db3515ed56291349daf28
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4950844
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Yuxin Hu <yuxinhu@google.com>
Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com>
1 file changed
tree: 3906835ce5f03024a84c2e759713cc3097f8c781
  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. build
  15. buildtools
  16. testing
  17. .clang-format
  18. .gitattributes
  19. .gitignore
  20. .gitmodules
  21. .gn
  22. .style.yapf
  23. .vpython
  24. .vpython3
  25. .yapfignore
  26. additional_readme_paths.json
  27. Android.mk
  28. AUTHORS
  29. BUILD.gn
  30. codereview.settings
  31. CONTRIBUTORS
  32. DEPS
  33. DIR_METADATA
  34. dotfile_settings.gni
  35. LICENSE
  36. OWNERS
  37. PRESUBMIT.py
  38. README.chromium
  39. README.md
  40. WATCHLISTS
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, 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 3.0completecompletecompletecompletecomplete
OpenGL ES 3.1incompletecompletecompletecomplete
OpenGL ES 3.2in progressin progressin progress

Additionally, OpenGL ES 1.1 is implemented in the front-end using OpenGL ES 3.0 features. This version of the specification is thus supported on all platforms specified above that support OpenGL ES 3.0 with known issues.

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
Windowscompletecompletecompletecompletecomplete
Linuxcompletecomplete
Mac OS Xcompletecomplete [1]
iOScomplete [2]
Chrome OScompleteplanned
Androidcompletecomplete
GGP (Stadia)complete
Fuchsiacomplete

[1] Metal is supported on macOS 10.14+

[2] Metal is supported on iOS 12+

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 1.5 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.

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