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dawn/dawn.git/854c4ca56e9b301ef1afbd53b3e5f3bb1eb08d8e
commit
854c4ca56e9b301ef1afbd53b3e5f3bb1eb08d8e
[log]
author
Kai Ninomiya <kainino@chromium.org>
Fri Apr 24 17:52:28 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri Apr 24 17:52:28 2026 -0700
tree
37d4adba5d2a48b580353561954b1ed93c981119
parent
9555836b09b1a620306a2c1c8498e02af37e9603 [diff]
[dawn][native] Fix tracking of mAllocatedSize

BufferBase assumed that if mAllocatedSize==0 it was uninitialized. This
isn't true in the WebGPU backend where mAllocatedSize is the same as the
requested size which may be 0.

This makes GetAllocatedSize() work correctly, which will be used
subsequently, in https://dawn-review.googlesource.com/c/dawn/+/302495

Bug: 501491697
Change-Id: Id96cfde8577c6e6575247fc0a2e5e0019174353b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/302595
Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
7 files changed
tree: 37d4adba5d2a48b580353561954b1ed93c981119
  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. .clang-format
  20. .clang-format-ignore
  21. .clang-tidy
  22. .git-blame-ignore-revs
  23. .gitattributes
  24. .gitignore
  25. .gitmodules
  26. .gn
  27. .style.yapf
  28. .vpython3
  29. AUTHORS
  30. BUILD.bazel
  31. BUILD.gn
  32. CMakeLists.txt
  33. CMakeSettings.json
  34. CODE_OF_CONDUCT.md
  35. codereview.settings
  36. CONTRIBUTING.md
  37. CPPLINT.cfg
  38. DEPS
  39. DIR_METADATA
  40. go.mod
  41. go.sum
  42. go_presubmit_support.py
  43. LICENSE
  44. OWNERS
  45. PRESUBMIT.py
  46. README.chromium
  47. README.md
  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.