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dawn / dawn / a76b32ec053451a479ba6989ba1d020a302580a4
commita76b32ec053451a479ba6989ba1d020a302580a4[log] [tgz]
authorBrandon Jones <bajones@chromium.org>Tue Apr 22 12:18:21 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Apr 22 12:18:21 2025 -0700
tree277b0b1774d86222c06760d24a038e632ee8e139
parent7a7ee683f7ca4ab595f9282042451cbbc5138ad0 [diff]
Add VulkanAddWorkToEmptyResolvePass Toggle

This toggle is enabled by default on Qualcomm GPUs and adds a small
amount of work (a timestamp write) to render passes which contain no
draw commands. This works around a driver bug where the resolve targets
of the empty pass don't get resolved.

This case is covered by the CTS with
https://gpuweb.github.io/cts/standalone/?runnow=1&q=webgpu:api,operation,render_pass,resolve:render_pass_resolve:*
which was observed to fail on a Pixel 4 but with this fix now passes.

Bug: 411656647
Change-Id: If89e57df5289e18cf7314a9025d2ac985792ba8f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/238334
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Brandon Jones <bajones@chromium.org>
Reviewed-by: Loko Kung <lokokung@google.com>
6 files changed
tree: 277b0b1774d86222c06760d24a038e632ee8e139
  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. .vpython3
  26. AUTHORS
  27. BUILD.bazel
  28. BUILD.gn
  29. CMakeLists.txt
  30. CMakeSettings.json
  31. CODE_OF_CONDUCT.md
  32. codereview.settings
  33. CONTRIBUTING.md
  34. CPPLINT.cfg
  35. DEPS
  36. DIR_METADATA
  37. go.mod
  38. go.sum
  39. go_presubmit_support.py
  40. LICENSE
  41. OWNERS
  42. PRESUBMIT.py
  43. README.chromium
  44. README.md
  45. WATCHLISTS
  46. 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.