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dawn / dawn / 3f5a9376dea63b041f604afef820651213272a9d
commit3f5a9376dea63b041f604afef820651213272a9d[log] [tgz]
authorCorentin Wallez <cwallez@chromium.org>Fri Jun 20 01:49:00 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Jun 20 01:49:00 2025 -0700
tree6d733f4dcaed485f35a57e191e3c8336e03033ed
parent6a294b931ac942984bdeb350d608c93c0fef8cae [diff]
[tint][spirv-writer] Add a KeepBindingArrayAsPointer transform.

KeepBindingArrayAsPointer is a transform that ensures that binding_arrays
are never stored by value but only used via a pointer to them. This is
used to produce SPIR-V that's more similar to what drivers typically
ingest where OpTypeArray<OpTypeImage> is always kept as a pointer.

Note that it doesn't handle function parameters so DirectVariableAccess
(DVA) for handles must have run prior to this transform.

This mismatch between Tint IR and SPIR-V at the time of writing is
because Tint IR disallows handle address space pointers as function
arguments, while "idiomatic" SPIR-V that drivers are used to use pointers
to pass handle types as function arguments.

Bug: 393558555
Change-Id: I2a37899b938dd773a6d991d6ebf58f30a3a6a5ca
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/247054
Reviewed-by: James Price <jrprice@google.com>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
7 files changed
tree: 6d733f4dcaed485f35a57e191e3c8336e03033ed
  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.