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dawn / dawn / 9bbe2114a1f103fe1dde36b23db2238c485fd57e
commit9bbe2114a1f103fe1dde36b23db2238c485fd57e[log] [tgz]
authorLe Hoang Quyen <lehoangquyen@chromium.org>Wed Jul 03 02:02:44 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jul 03 02:02:44 2024 +0000
tree44d2422bc5e7f7f434cebae04e78236a302bb26b
parenteebff27ab8e2e2ab6b9924aea540c22055a67e74 [diff]
Native: Add buffer's internal CopySrc usage

Standard WebGPU spec doesn't allow readback buffer (MapRead) to have
CopySrc usage. However some workarounds such as T2B using compute shader
might need to create a temporary buffer acting as compute shader's
output. Because T2B might copy with bytesPerRow or rowsPerImage >
copy size, some padding bytes in the destination buffer must be
preserved. In order to do that we need to copy the readback buffer's old
content to the temporary buffer. An internal CopySrc usage will be
needed in this case.

Bug: 348654098
Change-Id: Ie745c941d296b4d8f0fc7d5d47277b0e5f4f833c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/195399
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Quyen Le <lehoangquyen@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
6 files changed
tree: 44d2422bc5e7f7f434cebae04e78236a302bb26b
  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. DEPS
  34. DIR_METADATA
  35. go.mod
  36. go.sum
  37. go_presubmit_support.py
  38. LICENSE
  39. OWNERS
  40. PRESUBMIT.py
  41. README.chromium
  42. README.md
  43. 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.