Google Git
Sign in
dawn/dawn/0fd9b013f3b7e7d9bed2e9313fcfa0f2f3bdfa6e
commit
0fd9b013f3b7e7d9bed2e9313fcfa0f2f3bdfa6e
[log]
author
Lokbondo Kung <lokokung@google.com>
Fri Feb 20 23:51:44 2026 -0800
committer
Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri Feb 20 23:51:44 2026 -0800
tree
e7c6fdbcce0d6805c6ce55f296eec6caf4e121b8
parent
f9a0941385f48a03cbbcb9d339188faee22f3cd5 [diff]
[dawn][platform] Implements PostWorkerJob platform API in Dawn.

- This change adds the PostWorkerJob API as per the design doc in
  the bug with some minor changes. It also implements it for the
  default Platform class.
  Doc: https://docs.google.com/document/d/1o_1SvkpnWq0ysOxU5jJLkWKjBrLG5eUHqmWQSjQiu2s/edit?usp=sharing
  The main divergent change from the doc was to return a unique_ptr
  to the handle instead of just the handle. This makes it more
  consistent with the existing PostWorkerTask API.
- Modernizes the other handling code in the AsyncWorkerThreadPool
  to use std::atomic::wait and MutexCondVarProtected.
- Uses the same worker job handle to handle tasks.
- Add new unittests related specifically to the Dawn implemented
  version of the WorkerTaskPool.

Bug: 412761228
Change-Id: I3be3991dc69533871adf76dae5bc009e9a070b93
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/290376
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
6 files changed
tree: e7c6fdbcce0d6805c6ce55f296eec6caf4e121b8
  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. test_spec_presubmit_support.py
  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.