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dawn / dawn / 32017614bc6b35dfe9cb3da3e11feecaf289ecf7
commit32017614bc6b35dfe9cb3da3e11feecaf289ecf7[log] [tgz]
authorKai Ninomiya <kainino@chromium.org>Tue Oct 14 16:39:06 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Oct 14 16:39:06 2025 -0700
tree02dee99826946fc68f2575716da0b62226a0d04e
parentab72c5e39be10c3c298af19e92544621a5a24b46 [diff]
[emscripten] Build Emdawnwebgpu tests on GN

This should test Emdawnwebgpu build/link on CQ.
To build the bindings and tests locally, build 'emdawnwebgpu'.

- Add GN rules for tests (skipping InitOnlySample which is just for
  manually testing code size).
- Make top-level BUILD.gn rules build these tests when dawn_wasm (not
  is_wasm) is true, so they build whenever Emscripten is available.
  Using is_wasm at the top level would only work if the the default
  toolchain were Emscripten, but that isn't allowed.
- Don't bother to run the few generation targets without Emscripten,
  that was only so they would run on CQ before we had Emscripten
  toolchain support.
- Fix warnings that the GN build catches.
- Unrelated autoformat in //BUILD.gn (dxc:dxc -> dxc).

Verified the tests run locally in debug and release builds.

Verified that the link test builds on CQ by dry running with a missing
symbol in the JS file:
https://dawn-review.googlesource.com/c/dawn/+/266016/3?checksPatchset=3&tab=checks
https://ci.chromium.org/ui/p/dawn/builders/try/dawn-cq-mac-x64-rel/331/overview

Bug: 450959456, 417823381
Change-Id: I902a3620b702cd0f07e862393f0ee949c191b78b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/266016
Reviewed-by: Loko Kung <lokokung@google.com>
Auto-Submit: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
7 files changed
tree: 02dee99826946fc68f2575716da0b62226a0d04e
  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.