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dawn / dawn / 9311a1b75e518c00381390049453c4b42994b955
commit9311a1b75e518c00381390049453c4b42994b955[log] [tgz]
authorAustin Eng <enga@chromium.org>Thu Nov 30 18:48:32 2023 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Nov 30 18:48:32 2023 +0000
treec267c9f1991a0e2aae939e47a0caa88d06845e66
parenta598e5ffe1b7806d2d4df4373085687b54bcb42a [diff]
Implement SharedTextureMemory DmaBuf, SharedFence SyncFD+OpaqueFD

Zircon shared fences are also implemented, blindly.

It is only valid to enable at most one fence feature which sets
the fence type for the entire device. This functionality is built
on top of the existing VkSemaphore implementation but now the
semaphore handle type may be configured at runtime based on the
enabled fence feature. If no fence features are enabled, then it
defaults to using the same semaphore type that it previously was
hard-coded to.

Some Linux only support XRGB and XBGR dma buf formats. These
formats are tested to verify that between Dawn devices, the alpha
channel contents are preserved. This works because the channel
exists and can be read/written by Vulkan - it's just that display
system will ignore alpha for compositing/presentation.

Bug: dawn:1745
Change-Id: I2671611c8a7ee48d99df0b003b88fddac90d3b6e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/144861
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
35 files changed
tree: c267c9f1991a0e2aae939e47a0caa88d06845e66
  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. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. AUTHORS
  25. BUILD.bazel
  26. BUILD.gn
  27. CMakeLists.txt
  28. CMakeSettings.json
  29. CODE_OF_CONDUCT.md
  30. codereview.settings
  31. CONTRIBUTING.md
  32. CPPLINT.cfg
  33. dawn.json
  34. dawn_wire.json
  35. DEPS
  36. DIR_METADATA
  37. Doxyfile
  38. go.mod
  39. go.sum
  40. go_presubmit_support.py
  41. LICENSE
  42. OWNERS
  43. PRESUBMIT.py
  44. README.chromium
  45. README.md
  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.