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dawn/dawn/refs/heads/chromium/7680
commit
a94afcc3f32ac522df1383bb80b78680c7b1de70
[log]
author
James Price <jrprice@google.com>
Tue Apr 21 13:16:33 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Tue Apr 21 13:16:33 2026 -0700
tree
107c5e581071ea168bd6f892c210bf1b20946b6a
parent
b583f16da04725582abf2a15e8c5f615c5286ca9 [diff]
[M146] [tint] Fix loop analysis for limit cases

> We handled limit cases for >= and <=, but not for > and <.
>
> This causes us to add infinite loop mitigations for loops that store
> their bounds in a `let` (see the modified E2E tests), since we
> conservatively assume that the let may contain the problematic limit
> value. With some extra work we should be able to make the analysis
> avoid these false positives for common cases, but that will be left to
> a future CL.
>
> Fixed: 502206907
> Change-Id: I30224cdc47125e7603d3dc07daf0619c886f92e4
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/302776
> Reviewed-by: dan sinclair <dsinclair@chromium.org>
> Commit-Queue: James Price <jrprice@google.com>

(cherry picked from commit 4bb845fa408205b58a060f2b474cecfdb3d53fe0)

Bug: 503211611, 502206907
Change-Id: I30fd0f4bc8853f360201d2f2db6a07ae2cac1118
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/304117
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: James Price <jrprice@google.com>
17 files changed
tree: 107c5e581071ea168bd6f892c210bf1b20946b6a
  1. .github/
  2. .vscode/
  3. build_overrides/
  4. docs/
  5. generator/
  6. include/
  7. infra/
  8. scripts/
  9. src/
  10. test/
  11. third_party/
  12. tools/
  13. webgpu-cts/
  14. build
  15. buildtools
  16. testing
  17. .bazelrc
  18. .clang-format
  19. .clang-format-ignore
  20. .clang-tidy
  21. .git-blame-ignore-revs
  22. .gitattributes
  23. .gitignore
  24. .gitmodules
  25. .gn
  26. .style.yapf
  27. .vpython3
  28. AUTHORS
  29. BUILD.bazel
  30. BUILD.gn
  31. CMakeLists.txt
  32. CMakeSettings.json
  33. CODE_OF_CONDUCT.md
  34. codereview.settings
  35. CONTRIBUTING.md
  36. CPPLINT.cfg
  37. DEPS
  38. DIR_METADATA
  39. go.mod
  40. go.sum
  41. go_presubmit_support.py
  42. LICENSE
  43. OWNERS
  44. PRESUBMIT.py
  45. README.chromium
  46. README.md
  47. test_spec_presubmit_support.py
  48. unsafe_buffers_paths.txt
  49. WATCHLISTS
  50. 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.