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commit591e8cd0c6adb2849d3501499c0658552d6215ad[log] [tgz]
authorPeter McNeeley <petermcneeley@google.com>Tue Jun 17 19:14:43 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Jun 17 19:14:43 2025 -0700
tree22be24f2d1ee553cea0c20f3d82781f64c5ab115
parent2793f8642f7bb0f1209f33e7a35a5996286de11c [diff]
[tint] Basic scalarization support (max min clamp)

Various platforms seem to have issues with vectorized max,min, and
clamp builtins. For adreno this likely is due to a poor front end
implementation of handling nans.

For Intel (gen9) it is less clear where the implementation goes wrong
but what is clear is that scalarization resolves the issue.

Removed spirv only scalarization as it is duplicate. End2End test
still remains and passes.

Bug: 422144514, 407109052
Change-Id: Ie16617136be6e5993d5cf9c813eac2aa6b5492af
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/246095
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Peter McNeeley <petermcneeley@google.com>
23 files changed
tree: 22be24f2d1ee553cea0c20f3d82781f64c5ab115
  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. WATCHLISTS
  48. 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.