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dawn / dawn / 2060fe6297cd7d23c0000a6b31ae17e827c530d1
commit2060fe6297cd7d23c0000a6b31ae17e827c530d1[log] [tgz]
authorCorentin Wallez <cwallez@chromium.org>Fri Oct 03 07:49:16 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Oct 03 07:49:16 2025 -0700
treec0d6a437c73417c464860c205256ebe454cb84ae
parentd285209bfe339e429307623f005ef5573a27d7ff [diff]
[dawn][d3d12] Use the binding's BindingIndex for the HLSL register

Instead of the BindingNumber. While both are bounded values in most
cases:

 - BindingIndex is < max possible bindings in BGL
 - BindingNumber < maxBindingsPerBindGroup (1000)

We also create fake BindingNumber during BGL creation for additional
bindings that are added for external textures or dynamic binding arrays.
These can be any values and one allocation scheme was to start from
uint32_t max, which caused D3D12 to complain about the register number
being too big. Using BindingIndex fixes this.

Reenable support for ExternalTexture in the static bindings part of
dynamic binding arrays since that's now possible to support on D3D12.

Bug: 435317394, 42240282
Change-Id: I20258c05a6862e841261089719d644a8aec8b1cf
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/264474
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
3 files changed
tree: c0d6a437c73417c464860c205256ebe454cb84ae
  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.