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dawn / dawn / 82eadb32af6827abc1bda78e5f9ebcce5979bfea
commit82eadb32af6827abc1bda78e5f9ebcce5979bfea[log] [tgz]
authorLokbondo Kung <lokokung@google.com>Thu May 01 16:46:15 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu May 01 16:46:15 2025 -0700
treec2e1f292d1ecf5478cb67d2896c5d7daa8ed07af
parentefbfce34b440b2de0208e59f30cd918622c33fc0 [diff]
[dawn][native] Adds task tracking in ExecutionQueueBase.

- Implements the necessary tools in ExecutionQueueBase as described
  in the [design doc](https://docs.google.com/document/d/1o_1SvkpnWq0ysOxU5jJLkWKjBrLG5eUHqmWQSjQiu2s/edit?usp=sharing).
- Uses WeakRefs for Queue based events to avoid ref-cycle of
  QueueBase            -[implements]->
    ExecutionQueueBase -[owns]->
      Task             -[refs]->
        TrackedEvent   -[refs]->
	  QueueBase
- Much of the task tracking is based on the CallbackTaskManager
  which we can hopefully remove once more refactoring is done.
- Introduces a mechanism for the backend to proactively
  update the completed serial while also tracking queue event
  futures. This way, when the backend notifies that a particular
  serial is passed, we can flush all future callbacks up to that
  serial.
- Ensure that once the instance is dropped, all non-spontaneous
  event callbacks are called.
- Disables some Spontaneous tests since they won't work anymore
  now that we are in the middle of implementing the infra to
  enable AllowSpontaneous.

Bug: 412761228
Change-Id: I1650ab2ef1fa60837553d7bd3a5f6e0b4e7ad3b7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/239115
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>
8 files changed
tree: c2e1f292d1ecf5478cb67d2896c5d7daa8ed07af
  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.