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dawn / dawn / 1efec9a26cab5ca7e408f017f44f0c947d198985
commit1efec9a26cab5ca7e408f017f44f0c947d198985[log] [tgz]
authorJames Price <jrprice@google.com>Thu May 29 19:01:18 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu May 29 19:01:18 2025 -0700
tree983a2a0a4917b786e1b03d7997a86afde77f861d
parente3d56ea2b34574947cdc543f411d46c3c5ef6126 [diff]
[spirv] Rewrite MergeReturn

This change is intended to simplify the transform and make it easier
to work with, without changing any functionality.

It separates the process into two main passes:

  1. Replace all `return` instructions with `exit` instructions. Set
     the flag to signal that we are returning and record the control
     instruction that we will exit to.

  2. Conditionalize the merge blocks that we now exit to from the
     first pass. This may discover additional merge blocks that also
     need to be conditionalized as we walk back up the control flow
     stack.

The minor changes in some of the E2E tests are just a result of
iterating over instructions in a different order.

Bug: 420345727
Change-Id: I476ca8a086a99afbfd29b26f2cb01630526f5a8e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/244474
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: James Price <jrprice@google.com>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
7 files changed
tree: 983a2a0a4917b786e1b03d7997a86afde77f861d
  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. WATCHLISTS
  48. 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.