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dawn / dawn / 310d213777c86beedce8d37cb1f52123510d28f4
commit310d213777c86beedce8d37cb1f52123510d28f4[log] [tgz]
authorLe Hoang Quyen <lehoangquyen@chromium.org>Wed Apr 09 08:29:47 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Apr 09 08:29:47 2025 -0700
treee324b4028e358083bd9ab022b51acf1e219c06f3
parent8fc823fd5013aa765fbf829b877d26548521421a [diff]
D3D11: assign separate native binding index for each stage.

Previously we used the same D3D binding index counter for all stages
even if some resources are not used in some stages.

For example. a BindGroup with 3 buffers:
- buffer A, visibility=Fragment
- buffer B, visibility=Vertex
- buffer C, visibility=Fragment

They would be assigned to:
- buffer A: PS slot 0.
  - VS slot 0 is skipped.
- buffer B: VS slot 1.
  - PS slot 1 is skipped.
- buffer C: PS slot 2.
  - VS slot 2 is skipped.

It resulted in:
- VS slot 0 and 2 would be wasted and wouldn't be used by any resource.
- PS slot 1 would be wasted.

This CL changes the binding indices' assignment logic such that each
stage has its own counter. Thus, the above buffers would be assigned to:
- buffer A: PS slot 0.
- buffer B: VS slot 0.
- buffer C: PS slot 1.

This will also make the resources' stage specific indices continuous.
It makes it possible to bind all resources in one D3D call if we want
to in future.

Bug: 42240704
Change-Id: Ib70c5f32ccbbdff03212bc2b7d3cc1b76154fc9c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/234974
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Quyen Le <lehoangquyen@chromium.org>
5 files changed
tree: e324b4028e358083bd9ab022b51acf1e219c06f3
  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-tidy
  20. .git-blame-ignore-revs
  21. .gitattributes
  22. .gitignore
  23. .gitmodules
  24. .gn
  25. AUTHORS
  26. BUILD.bazel
  27. BUILD.gn
  28. CMakeLists.txt
  29. CMakeSettings.json
  30. CODE_OF_CONDUCT.md
  31. codereview.settings
  32. CONTRIBUTING.md
  33. CPPLINT.cfg
  34. DEPS
  35. DIR_METADATA
  36. go.mod
  37. go.sum
  38. go_presubmit_support.py
  39. LICENSE
  40. OWNERS
  41. PRESUBMIT.py
  42. README.chromium
  43. README.md
  44. WATCHLISTS
  45. 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.