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dawn / dawn / 5a6b701b2dbf73868275fb13bdc6073b7b8642d5
commit5a6b701b2dbf73868275fb13bdc6073b7b8642d5[log] [tgz]
authorStephen White <senorblanco@chromium.org>Mon Feb 12 16:26:47 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Feb 12 16:26:47 2024 +0000
tree0c6d33091b55095b077324ff7c0fbc5b5867c91a
parent1b00745fc9e02ba00ff169c73d8b4bd2340ae6e5 [diff]
Add ClampFragDepth transform to GLSL writer.

Also, make the ClampFragDepth transform play well with
existing push constants in the AST. This required implementing a ClampFragDepth::Config containing byte offsets for the min_depth and max_depth push constants, so they can be specified by Dawn.

These are std::optional, and leaving them null indicates not to
run the transform. Run the transform if any shaders being compiled
into a pipeline by Dawn write to frag_depth. In practice, this means to
force-run the transform in the vertex shader if the fragment shader is
writing to frag_depth. This keeps the PushConstants struct identical
at link time.

Bug: dawn:2185
Change-Id: Ieb9e282f94b8c74374f11b90324dacf2325183f0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/172640
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
21 files changed
tree: 0c6d33091b55095b077324ff7c0fbc5b5867c91a
  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.