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dawn/dawn/418fcb9a6e9ac3637cbd91c41b944712fc115f3a
commit
418fcb9a6e9ac3637cbd91c41b944712fc115f3a
[log]
author
Natalie Chouinard <chouinard@google.com>
Tue Jul 28 12:08:21 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Tue Jul 28 12:08:21 2026 -0700
tree
d020b9e6090900e983abf1a7bb7e1c256adb3354
parent
2dbc46c5f6d3860841b98080afad98db85b31418 [diff]
[tint] Allow interim duplication in swizzles

In the WGSL swizzle assignment language feature, duplicate components
are permitted in swizzles on the LHS of an assignment provided that the
final collapsed swizzle that will actually be assigned to is free from
duplicates. Fix validation to account for this.

These have also been tested against new CTS:
https://github.com/gpuweb/cts/pull/4688

Bug: 539634915
Change-Id: I3cc547b1f48d37354379f8f08ec4c913745be3d7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/327796
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Natalie Chouinard <chouinard@google.com>
2 files changed
tree: d020b9e6090900e983abf1a7bb7e1c256adb3354
  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.