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dawn / dawn / 167628d1a9e8aa43d16900279a77f68d1711aee2
commit167628d1a9e8aa43d16900279a77f68d1711aee2[log] [tgz]
authorBrandon Jones <bajones@chromium.org>Mon Aug 04 15:45:21 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Aug 04 15:45:21 2025 -0700
tree89fcfe72b11bf30a158301381dbe29bb0c290ab0
parentd1e3c7773833b28db0417b99db3eafd2efa93e3c [diff]
Use TextureView IDs to query VkFramebuffer cache

Previously the framebuffer cache was using WeakPtrs to TextureViews to
generate the hash, but this turned out to be fairly expensive as we
needed to promote the WeakPtr to a Ref for each attachment every time
we did a cache lookup. Unfortunately this made the framebuffer cache
almost as expensive as simply re-creating the framebuffers.

By switching to use a Device-unique ID for texture views during the
cache lookup we avoid all of that overhead.

Bug: 416088623
Change-Id: I8db50bbbb9f97d10bcbd148a5561fbd7b02b60ca
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/255615
Reviewed-by: Loko Kung <lokokung@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Brandon Jones <bajones@chromium.org>
6 files changed
tree: 89fcfe72b11bf30a158301381dbe29bb0c290ab0
  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.