Google Git
Sign in
dawn / dawn / e7dbf31cf9efca6bfdee8d7c928f08f45f8779ca
commite7dbf31cf9efca6bfdee8d7c928f08f45f8779ca[log] [tgz]
authorJames Price <jrprice@google.com>Tue Dec 03 23:13:09 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Dec 03 23:13:09 2024 +0000
tree156eb2a2f0d4e500619193dac35453e2871c2c0d
parent197289e9cb5ebbc06d1ac7a36ad7c0a49b9c3b8b [diff]
[tint] Emit `unreachable` as `return` for non-void functions

The `PreventInfiniteLoops` transforms changes the control flow such
that some `unreachable` instructions become statically reachable. This
may upset some downstream compilers that want to ensure that non-void
functions always return.

There are various places that unreachable instructions show up, so
just always emit them as `return` statements in the textual backends
instead of only handling this in the infinite loop transform.

Fixed: 381541325
Change-Id: I92b5063361b179f0618e0f5130a29dfae98ea735
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/217894
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: James Price <jrprice@google.com>
30 files changed
tree: 156eb2a2f0d4e500619193dac35453e2871c2c0d
  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.