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dawn/dawn/refs/heads/chromium/7787
commit
493241c40dc94ca283c5e2b42a03911df870f359
[log]
author
Kai Ninomiya <kainino@chromium.org>
Fri Apr 10 23:37:14 2026 -0700
committer
Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri Apr 10 23:37:14 2026 -0700
tree
bb32ce1636ea82d89e7e0f728642ee206a283a16
parent
f8178d47e2351a11830639a549b9ca476c426bf6 [diff]
[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>
2 files changed
tree: bb32ce1636ea82d89e7e0f728642ee206a283a16
  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. unsafe_buffers_paths.txt
  48. WATCHLISTS
  49. 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.