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dawn/dawn/6b407b1acee0b27a9e75db08810ca7145982c96f
commit
6b407b1acee0b27a9e75db08810ca7145982c96f
[log]
author
Lokbondo Kung <lokokung@google.com>
Fri Sep 26 12:55:30 2025 -0700
committer
Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri Sep 26 12:55:30 2025 -0700
tree
45d3a5a57f00b4ad687c0263420cc4d02f6bef8b
parent
f49880c66ee9724cd8f7d420fcb16d10371c3dfa [diff]
[dawn][native] Fixes TSAN issues with Device::mState.

- Make mState an atomic so that when running without implicit
  synchronization, even though there may be a race, we don't
  trigger TSAN errors.
- When running with implicit synchronization, take the
  DeviceGuard earlier in async Pipeline callbacks. Before, we
  couldn't take the DeviceGuard earlier because it could potentially
  cause us to take the lock more than once as a result of
  re-entrant callbacks, but now that the device lock is recursive
  this is no longer an issue, and taking the lock before checking the
  device state is possible and more correct.

Bug: 445324864
Change-Id: I9bfe84c5a287e03437698bdee080435799e08363
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/263140
Commit-Queue: Loko Kung <lokokung@google.com>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Auto-Submit: Loko Kung <lokokung@google.com>
2 files changed
tree: 45d3a5a57f00b4ad687c0263420cc4d02f6bef8b
  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.