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dawn/dawn/d98f29ed6a9d99fdb9be2bc3e37e006da3b56b98
commit
d98f29ed6a9d99fdb9be2bc3e37e006da3b56b98
[log]
author
James Price <jrprice@google.com>
Tue Jun 02 07:14:36 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Tue Jun 02 07:14:36 2026 -0700
tree
4b6fe5dd78eeac3bcda44cd47de15683488be410
parent
2d78607c841706260998dbd5b3c2106db250e764 [diff]
Reland: [gn] Add support for generated sources

Avoids use of absolute path to build directory when invoking the
generation script, since this was causing failures on the bots that
check for deterministic builds.

Also disable CGO in run.py when invoking Go, since this causes
problems when cross-compiling.

Original commit message below.

Add a custom action that invokes the source generator. The build file
generator produces a list of dependencies for this custom command, so
that source generation will automatically re-run whenever any .tmpl
file or .def file is changed.

Like with Bazel, we also pre-generate a list of generated sources
because it needs to know what the outputs of the command are.

Bug: 513255285, 516926043
Change-Id: I98656424052681b2682bdda5eb0a868db2f9b05a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/312375
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: James Price <jrprice@google.com>
18 files changed
tree: 4b6fe5dd78eeac3bcda44cd47de15683488be410
  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. .bazelrc
  19. .bazelversion
  20. .clang-format
  21. .clang-format-ignore
  22. .clang-tidy
  23. .git-blame-ignore-revs
  24. .gitattributes
  25. .gitignore
  26. .gitmodules
  27. .gn
  28. .style.yapf
  29. .vpython3
  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. MODULE.bazel.lock
  47. OWNERS
  48. PRESUBMIT.py
  49. PRESUBMIT_test.py
  50. README.chromium
  51. README.md
  52. unsafe_buffers_paths.txt
  53. WATCHLISTS
  54. 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.