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dawn / dawn / 511eb80847afe6bded34ec491a38d5d78ba2d604
commit511eb80847afe6bded34ec491a38d5d78ba2d604[log] [tgz]
authorJiawei Shao <jiawei.shao@intel.com>Thu Aug 29 00:57:50 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Aug 29 00:57:50 2024 +0000
treee2296d848f64a0506f0523c7e942b2fa37abbfca
parent737d5d8e967be13c9e9f6a3201ce841eb9529082 [diff]
Tint: Support `clip_distances` on HLSL

This patch implements the translation of built-in value `clip_distances`
on HLSL. We should take different ways to do the translation according
to the array length of `clip_distances`:
- Array length is 1:
  float clipDistance : SV_ClipDistance0
- Array length is 2 to 4:
  floatN clipDistance : SV_ClipDistance0
- Array length is 5:
  float4 clipDistance : SV_ClipDistance0
  float clipDistance1 : SV_ClipDistance1
- Array length is 6 to 8:
  float4 clipDistance : SV_ClipDistance0
  floatN clipDistance1 : SV_ClipDistance1

To correctly translate in HLSL backend we have to use
`core::BuiltinValue::kClipDistances` as `SV_ClipDistance0` and the
internal attribute `HLSLClipDistance1` as `SV_ClipDistance1`.

Bug: chromium:358408571
Change-Id: I5d0843cc846190c60a028e48fb8e13ae9a88a5bb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/203775
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
43 files changed
tree: e2296d848f64a0506f0523c7e942b2fa37abbfca
  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. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. AUTHORS
  25. BUILD.bazel
  26. BUILD.gn
  27. CMakeLists.txt
  28. CMakeSettings.json
  29. CODE_OF_CONDUCT.md
  30. codereview.settings
  31. CONTRIBUTING.md
  32. CPPLINT.cfg
  33. DEPS
  34. DIR_METADATA
  35. go.mod
  36. go.sum
  37. go_presubmit_support.py
  38. LICENSE
  39. OWNERS
  40. PRESUBMIT.py
  41. README.chromium
  42. README.md
  43. 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.