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dawn/dawn/d07ac57d563ad9c5f74b671e434d19bc0309f5d1
commit
d07ac57d563ad9c5f74b671e434d19bc0309f5d1
[log]
author
Corentin Wallez <cwallez@chromium.org>
Thu May 07 11:05:00 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Thu May 07 11:05:00 2026 -0700
tree
5714c97a279decedcbd299103e7c2c31d41c16ef
parent
c78c5f1b07284f6684369dd62a9089dbbb1de0f0 [diff]
[YUV AHB] W/a Exynos GPUs not handling RGB_IDENTITY correctly.

The Samsung Exynos GPU driver return 0 for Cb and Cr when sampling a
YCbCr texture with VkSamplerConversionYCbCrModel RGB_IDENTITY. Add a
toggle that causes YCBCR_IDENTITY to be used instead, and compensate for
that in ExternalTexture by undoing the transform when computing the
shader's yuvToRgb matrix.

Add a configuration to the OpaqueYCbCrAndroidForExternalTexture tests
that force this toggle on.

Bug: 497675620, 505806584
Change-Id: If1a937b3033faa56a9b62f6cff50d724a17d800e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/307175
Reviewed-by: Brandon Jones <bajones@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
8 files changed
tree: 5714c97a279decedcbd299103e7c2c31d41c16ef
  1. .github/
  2. .vscode/
  3. agents/
  4. build_overrides/
  5. docs/
  6. generator/
  7. include/
  8. infra/
  9. scripts/
  10. src/
  11. test/
  12. third_party/
  13. tools/
  14. webgpu-cts/
  15. build
  16. buildtools
  17. testing
  18. .bazelrc
  19. .clang-format
  20. .clang-format-ignore
  21. .clang-tidy
  22. .git-blame-ignore-revs
  23. .gitattributes
  24. .gitignore
  25. .gitmodules
  26. .gn
  27. .style.yapf
  28. .vpython3
  29. AUTHORS
  30. BUILD.bazel
  31. BUILD.gn
  32. CMakeLists.txt
  33. CMakeSettings.json
  34. CODE_OF_CONDUCT.md
  35. codereview.settings
  36. CONTRIBUTING.md
  37. CPPLINT.cfg
  38. DEPS
  39. DIR_METADATA
  40. go.mod
  41. go.sum
  42. go_presubmit_support.py
  43. LICENSE
  44. OWNERS
  45. PRESUBMIT.py
  46. README.chromium
  47. README.md
  48. unsafe_buffers_paths.txt
  49. WATCHLISTS
  50. WORKSPACE.bazel
README.md

Build Status Matrix Space

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the WebGPU standard. More precisely it implements webgpu.h that is a one-to-one mapping with the WebGPU IDL. Dawn is meant to be integrated as part of a larger system and is the underlying implementation of WebGPU in Chromium.

Dawn provides several WebGPU building blocks:

  • WebGPU C/C++ headers that applications and other building blocks use.
    • The webgpu.h version that Dawn implements.
    • A C++ wrapper for the webgpu.h.
  • A “native” implementation of WebGPU using platforms' GPU APIs: D3D12, Metal, Vulkan and OpenGL. See per API support for more details.
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
  • Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with the webgpu.h docs)

License

BSD 3-Clause License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.