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dawn / dawn / a6300bfdf53dc1bfb461ffc94595881fefa13ea2
commita6300bfdf53dc1bfb461ffc94595881fefa13ea2[log] [tgz]
authordan sinclair <dsinclair@chromium.org>Fri Sep 27 23:48:30 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Sep 27 23:48:30 2024 +0000
tree03edd04ace18fb142c732f3ac62f53f615db7942
parentf3f67f73e31128319ed623a4d5d834ecaeb99bf4 [diff]
[glsl] Convert `select` to `mix` instead of ternary.

The current GLSL IR and AST backends translate the `select` builtin to a
ternary condition. This isn't correct as in WGSL both branches need to
be evaluated all of the time while in GLSL only the selected branch of
a ternary is evaluated.

This Cl converts the `select` calls to a `mix` call. In the case of a
WGSL select with vector values and a scalar boolean condition the scalar
boolean is splatted into a vector of correct size.

Bug: 367066331
Change-Id: Ibe2bd5a3aabd29a108831e3ed4469eb40c490278
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/208194
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: James Price <jrprice@google.com>
570 files changed
tree: 03edd04ace18fb142c732f3ac62f53f615db7942
  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.