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dawn/dawn/refs/heads/chromium/7680
commit
10fb89e3179bb7443e66911eb3c795c7aaf022e5
[log]
author
Lokbondo Kung <lokokung@google.com>
Mon Mar 30 11:50:53 2026 -0700
committer
Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Mon Mar 30 11:50:53 2026 -0700
tree
c2c7e491b975ba232d5cfccdf222e0d5605b38f2
parent
7c1377424ea94d1b15d6fd3d1bf3356617d1c228 [diff]
[M146] [dawn][native] Updates AsyncTasks to remove need of WaitableEvent.

- Previously, the WaitableEvent and how it was being handled caused a
  UAF as per the bug below. This change simplifies the logic in the
  AsyncTasks to remove the WaitableEvent entirely, and get rid of the
  need of the intermediate WaitableTask struct that we used to pair
  the AsyncTask to it's manager. Since we know that the task's
  manager must be the one that created it, we can track that
  information at construction and use it directly later on.
- This change also updates the AsyncTask to use MutexCondVarProtected
  for synchronization.

Bug: 493900619
Change-Id: I45da53638727ac86d60e9ffd317ad342fced3174
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/299315
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/299955
Auto-Submit: Loko Kung <lokokung@google.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
4 files changed
tree: c2c7e491b975ba232d5cfccdf222e0d5605b38f2
  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.