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dawn/dawn/refs/heads/chromium/7727_111
commit
ff7b4f6c5d964879b5f4356ef6e732adeed2f627
[log]
author
Kai Ninomiya <kainino@chromium.org>
Thu Apr 16 23:09:02 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Thu Apr 16 23:09:02 2026 -0700
tree
3fb8d62df5a5c24fc73267ac9a5ec7079c9984fa
parent
2c681aed02b0add6bcf6724175660c4b35ece843 [diff]
[M147] [dawn][opengl] Fix size of MappedAtCreation mapping

Original change's description:
> [dawn][opengl] Fix size of MappedAtCreation mapping
>
> The updated test catches this with ASan in the case where GLDefer is
> enabled (which it does) but the bug also exists in the non-GLDefer case.
> Just can't catch it with ASan.
>
> There isn't an equivalent issue in the non-MappedAtCreation case because
> the buffer is initialized from the GPU (even if it's mappable, though in
> that case the usage can't have Uniform anyway so the size isn't rounded
> up).
>
> Fixes: 500774812
> Change-Id: Iaf7f4b8ee5b69c4f5a41f39d10d2cce9cfd983e5
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/302195
> Commit-Queue: Kai Ninomiya <kainino@chromium.org>
> Auto-Submit: Kai Ninomiya <kainino@chromium.org>
> Reviewed-by: Quyen Le <lehoangquyen@chromium.org>

(cherry picked from commit 493241c40dc94ca283c5e2b42a03911df870f359)

Bug: 501627927
Change-Id: Iaf7f4b8ee5b69c4f5a41f39d10d2cce9cfd983e5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/303236
Commit-Queue: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Chrome Cherry Picker <chrome-cherry-picker@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
2 files changed
tree: 3fb8d62df5a5c24fc73267ac9a5ec7079c9984fa
  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.