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dawn/dawn/da528f525fa90b223dcbcb16be3250c3ccb14016
commit
da528f525fa90b223dcbcb16be3250c3ccb14016
[log]
author
Le Hoang Quyen <lehoangquyen@chromium.org>
Wed Apr 08 03:55:06 2026 -0700
committer
Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Wed Apr 08 03:55:06 2026 -0700
tree
3ce69d2eb95b44aa86b6617c45e65cfe54afa035
parent
d465c0bb58d5f7f00d581da8a6c6b9c74f77049a [diff]
[dawn] Don't sort adapters by type when no power preference is specified

When powerPreference is Undefined, sorting adapters by type is
unnecessary and can override the order returned by the OS/driver.
Preserving that order lets users control adapter preference through OS
system settings (e.g. Windows Graphics Settings per-app GPU preference),
which is the expected behavior when no explicit preference is requested.

This is achieved by assigning equal adapter type rank to all adapters
when no power preference is given, combined with switching to
stable_sort so that the original OS-provided order is preserved for
adapters with equal rank (whether due to no power preference or to
genuinely equal ranks under a specified preference).

Bug: 499921569
Change-Id: I4a461be914212763299193bbb39ed40a6bd23b81
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/301355
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Quyen Le <lehoangquyen@chromium.org>
1 file changed
tree: 3ce69d2eb95b44aa86b6617c45e65cfe54afa035
  1. .github/
  2. .vscode/
  3. build_overrides/
  4. docs/
  5. generator/
  6. include/
  7. infra/
  8. scripts/
  9. src/
  10. test/
  11. third_party/
  12. tools/
  13. webgpu-cts/
  14. build
  15. buildtools
  16. testing
  17. .bazelrc
  18. .clang-format
  19. .clang-format-ignore
  20. .clang-tidy
  21. .git-blame-ignore-revs
  22. .gitattributes
  23. .gitignore
  24. .gitmodules
  25. .gn
  26. .style.yapf
  27. .vpython3
  28. AUTHORS
  29. BUILD.bazel
  30. BUILD.gn
  31. CMakeLists.txt
  32. CMakeSettings.json
  33. CODE_OF_CONDUCT.md
  34. codereview.settings
  35. CONTRIBUTING.md
  36. CPPLINT.cfg
  37. DEPS
  38. DIR_METADATA
  39. go.mod
  40. go.sum
  41. go_presubmit_support.py
  42. LICENSE
  43. OWNERS
  44. PRESUBMIT.py
  45. README.chromium
  46. README.md
  47. unsafe_buffers_paths.txt
  48. WATCHLISTS
  49. 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.