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dawn / dawn / aa806c5cb792a9826ad5075f80c2ba15e1e8943d
commitaa806c5cb792a9826ad5075f80c2ba15e1e8943d[log] [tgz]
authorLokbondo Kung <lokokung@google.com>Fri Nov 01 03:25:37 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Nov 01 03:25:37 2024 +0000
treeabc0c08e6849806d4ac192d17a90f51544ee21f1
parent0eee090c2b8adca4142c352b6668a9b72435c538 [diff]
[dawn][native] Fixes TSAN race from GetCompilationInfo.

- The race happens when multiple threads Complete the
  CompilationInfoEvent. The call to
  OwnedCompilationMessages::GetCompilationInfo was writing
  to the owned copy of CompilationInfo in both threads. Note
  that in practice, the competing threads would have written
  the same things.
- Adds an atomic bool to gate writing to the internal
  CompilationInfo struct that should only ever be written
  once.
- Updates some of the asserts to use the new bool to be
  explicit.

Bug: 373845830
Change-Id: I3998a276bc210bc5bf5bccfe31c44b4e01de4472
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/211947
Reviewed-by: Shrek Shao <shrekshao@google.com>
Auto-Submit: Loko Kung <lokokung@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
2 files changed
tree: abc0c08e6849806d4ac192d17a90f51544ee21f1
  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-tidy
  20. .git-blame-ignore-revs
  21. .gitattributes
  22. .gitignore
  23. .gitmodules
  24. .gn
  25. AUTHORS
  26. BUILD.bazel
  27. BUILD.gn
  28. CMakeLists.txt
  29. CMakeSettings.json
  30. CODE_OF_CONDUCT.md
  31. codereview.settings
  32. CONTRIBUTING.md
  33. CPPLINT.cfg
  34. DEPS
  35. DIR_METADATA
  36. go.mod
  37. go.sum
  38. go_presubmit_support.py
  39. LICENSE
  40. OWNERS
  41. PRESUBMIT.py
  42. README.chromium
  43. README.md
  44. WATCHLISTS
  45. 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.