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dawn/dawn/a3c10d5138b7ae5377cd8cf2a70efd902e309724
commit
a3c10d5138b7ae5377cd8cf2a70efd902e309724
[log]
author
Etienne Pierre-doray <etiennep@chromium.org>
Wed Aug 12 06:23:30 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Wed Aug 12 06:23:30 2026 -0700
tree
e9793e89723cccd10ef57833e568d35c1a036d23
parent
f9028eb3b676595fcf645aed3f4aae5a911fcff7 [diff]
[tracing] Support perfetto API in dawn

This CL adds support for perfetto API in dawn and uses directly.
- Update DEPS and build config
- Update src/dawn/platform/tracing/TraceEvent.h to use perfetto trace macros directly, and add stubs for !DAWN_USE_PERFETTO
- Update perf_tests to export perfetto trace directly (instead
of manually write a json file) and use trace_processor to record
results.
- Rewrite callsites to fix perfetto macros (remove platform, and use string categories)

Bug: 542534250
Change-Id: If8e88d912e8249d79de7081505a24163cf293a48
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/329295
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Etienne Pierre-doray <etiennep@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
42 files changed
tree: e9793e89723cccd10ef57833e568d35c1a036d23
  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. .vpython3
  31. AUTHORS
  32. BUILD.bazel
  33. BUILD.gn
  34. CMakeLists.txt
  35. CMakeSettings.json
  36. CODE_OF_CONDUCT.md
  37. codereview.settings
  38. CONTRIBUTING.md
  39. CPPLINT.cfg
  40. DEPS
  41. DIR_METADATA
  42. go.mod
  43. go.sum
  44. go_presubmit_support.py
  45. LICENSE
  46. MODULE.bazel
  47. MODULE.bazel.lock
  48. OWNERS
  49. PRESUBMIT.py
  50. PRESUBMIT_test.py
  51. README.chromium
  52. README.md
  53. unsafe_buffers_paths.txt
  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.