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dawn/dawn/12aa2aff129aa80da24ce5ffcbd31d12c942d2b2
commit
12aa2aff129aa80da24ce5ffcbd31d12c942d2b2
[log]
author
Lokbondo Kung <lokokung@google.com>
Thu Oct 22 16:23:19 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Thu Oct 22 16:23:19 2026 -0700
tree
832a20f86d085fa5706a5c043d36dd3f0a378595
parent
a73778252492a4668a1015b3ae2b3f4f07c65b5b [diff] 
[metal] Audit and document device guards for Create* functions.

- As a part of ML analysis for CPU bottlenecks, a detailed report
  identified that lock contention in Metal accounted for ~6.6% of
  CPU time. The major one is the one for CreateBindGroup which we
  unfortunately need to conditionally gate for now since the
  ArgumentBuffer implementation is WIP. Ideally, as we implement
  that, it would be best if we could put in place the synchronizations
  such that we don't need to regress to needing the lock.

Bug: 363031535
Change-Id: I33045d01ae1013f8ab05a2174d40b1475b871734
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/352915
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>
2 files changed
tree: 832a20f86d085fa5706a5c043d36dd3f0a378595
  1. .github/
  2. .vscode/
  3. agents/
  4. build_overrides/
  5. docs/
  6. generator/
  7. include/
  8. infra/
  9. scripts/
  10. src/
  11. test/
  12. third_party/
  13. tools/
  14. webgpu-cts/
  15. build
  16. buildtools
  17. testing
  18. .bazelignore
  19. .bazelrc
  20. .bazelversion
  21. .clang-format
  22. .clang-format-ignore
  23. .clang-tidy
  24. .git-blame-ignore-revs
  25. .gitattributes
  26. .gitignore
  27. .gitmodules
  28. .gn
  29. .style.yapf
  30. AUTHORS
  31. BUILD.bazel
  32. BUILD.gn
  33. CMakeLists.txt
  34. CMakeSettings.json
  35. CODE_OF_CONDUCT.md
  36. codereview.settings
  37. CONTRIBUTING.md
  38. CPPLINT.cfg
  39. DEPS
  40. DIR_METADATA
  41. go.mod
  42. go.sum
  43. go_presubmit_support.py
  44. LICENSE
  45. MODULE.bazel
  46. OWNERS
  47. PRESUBMIT.py
  48. PRESUBMIT_test.py
  49. README.chromium
  50. README.md
  51. unsafe_buffers_paths.txt
  52. vpython.toml
  53. vpython.toml.uv.lock
  54. WATCHLISTS
  55. 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.