[DawnLPM] Fix non-deterministic dependency cycle

This CL removes the hacky copies that were required to work around
`get_target_outputs` from a `proto_library` which caused [1].

The dependency cycle could pop up because a cached obj file could reference a protobuf header which could reference that cached obj file:

dawn_lpm_proto.lib ->
dawn_lpm_autogen.pb.obj -> gen/third_party/dawn/src/dawn/fuzzers/lpmfuzz/dawn_custom_lpm.pb.h -> obj/third_party/dawn/src/dawn/fuzzers/dawn_lpm_proto.lib

[1] https://bugs.chromium.org/p/chromium/issues/detail?id=1455317#c11

Bug: chromium:1455317
Change-Id: Icc092f3d1ba8c53d53f4a3eeb57f8ee733130040
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/152500
Commit-Queue: Brendon Tiszka <tiszka@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
1 file changed
tree: a4447c92a1a4f31e630ce487358f821851b03e10
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. generator/
  5. include/
  6. infra/
  7. scripts/
  8. src/
  9. test/
  10. third_party/
  11. tools/
  12. webgpu-cts/
  13. .bazelrc
  14. .clang-format
  15. .clang-tidy
  16. .gitattributes
  17. .gitignore
  18. .gitmodules
  19. .gn
  21. BUILD.bazel
  22. BUILD.gn
  23. CMakeLists.txt
  24. CMakeSettings.json
  26. codereview.settings
  28. CPPLINT.cfg
  29. dawn.json
  30. dawn_wire.json
  31. DEPS
  33. Doxyfile
  34. go.mod
  35. go.sum
  36. go_presubmit_support.py
  38. OWNERS
  39. PRESUBMIT.py
  40. README.chromium
  41. README.md
  42. WORKSPACE.bazel

Dawn's logo: a sun rising behind a stylized mountain inspired by the WebGPU logo. The text Dawn is written below it.

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the work-in-progress 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)




Apache 2.0 Public License, please see LICENSE.


This is not an officially supported Google product.