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dawn/dawn/13f869f82f895d6a49b09d21c85a562a21bf69c6
commit
13f869f82f895d6a49b09d21c85a562a21bf69c6
[log]
author
Steven Perron <stevenperron@google.com>
Wed Jul 08 08:42:09 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Wed Jul 08 08:42:09 2026 -0700
tree
81e265e64381870e8ee37856e95b416183c4b9f0
parent
30da06157245b01df4ae77da7adb75865246f436 [diff]
tint/spirv: Refactor constant rewriting in transpose row major

Split the RewriteConstant function in TransposeRowMajor into two
separate, cleaner functions: TransposeRowMajorMatricesInConstant
(handling the structural traversal of structs/arrays) and
TransposeRowMajorMatrixOrArray (doing the actual transpositions).

This fixes a bug in the handling of arrays demonstrated in the test
LetConstant_ArrayOfStruct. There was an early exit in the array
case if we had not yet seen the row major attribute. However, that
attribute existed in the struct type inside the array, so the
matrix in the struct was not being rewritten.

Bug: 521775317
Change-Id: Idc5f011ead1bfba0f3123d3627527c3393b2bca5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/322295
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Auto-Submit: Steven Perron <stevenperron@google.com>
Commit-Queue: Steven Perron <stevenperron@google.com>
2 files changed
tree: 81e265e64381870e8ee37856e95b416183c4b9f0
  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.