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dawn/dawn/ca338db0c2d10ae744a5da3e97b4cf2385013d76
commit
ca338db0c2d10ae744a5da3e97b4cf2385013d76
[log]
author
Steven Perron <stevenperron@google.com>
Tue Oct 13 12:15:38 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Tue Oct 13 12:15:38 2026 -0700
tree
ef71c5b784c0a1ea65ef51fb5b8cddba6149e596
parent
2e0c4085589c748f7b43b1d3ed1c3e0c34a359f8 [diff]
[dawn][node] Do not create a JS promise for kUnusedPromise

dawn.node needs to be updated because kUnusedPromise is used when
something goes wrong, like a JS exception. The existing code tries to
create a promise that is immediately rejected. However, that is not
valid under the Node-API:

> In many cases when a Node-API function is called and an exception is
> already pending, the function will return immediately with a
> napi_status of napi_pending_exception.

So we fix dawn.node, and fix our Node-API implementation to match that
behaviour.

This fixes the following CTS tests under Node.js:
- webgpu:api,validation,compute_pipeline:overrides,value,type_error:isAsync=true;*
- webgpu:api,validation,render_pipeline,overrides:value,type_error,*:isAsync=true;*
- webgpu:api,validation,capability_checks,features,*:isAsync=true;*

Bug: 571890980
Change-Id: Ic5451a32626936a66e729aff9074bfbba4371936
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/350576
Auto-Submit: Steven Perron <stevenperron@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Steven Perron <stevenperron@google.com>
3 files changed
tree: ef71c5b784c0a1ea65ef51fb5b8cddba6149e596
  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. .bazelignore
  19. .bazelrc
  20. .bazelversion
  21. .clang-format
  22. .clang-format-ignore
  23. .clang-tidy
  24. .git-blame-ignore-revs
  25. .gitattributes
  26. .gitignore
  27. .gitmodules
  28. .gn
  29. .style.yapf
  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. OWNERS
  47. PRESUBMIT.py
  48. PRESUBMIT_test.py
  49. README.chromium
  50. README.md
  51. unsafe_buffers_paths.txt
  52. vpython.toml
  53. vpython.toml.uv.lock
  54. WATCHLISTS
  55. 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.