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dawn / dawn / 7b5df898b667de4e7e25dd5a0876e4bf4516a443
commit7b5df898b667de4e7e25dd5a0876e4bf4516a443[log] [tgz]
authorZhaoming Jiang <zhaoming.jiang@microsoft.com>Sat Apr 19 00:42:58 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Sat Apr 19 00:42:58 2025 -0700
tree3ca77199f2adaa927ac5a041fe93a189578e4175
parente2c7a2a0b8ba71134362bc75c3989c6c006b5fb4 [diff]
Reland "Dawn: Use no Tint Program at all in shader compilation cache checking"

This reverts commit 22ee238376b8b5be900c802598e6e2514547ad37.

Reason for revert:

The right-shifting rhs not less than bits of lhs issue that cause the
roll into Skia is fixed in this CL.

Bug: 402772740, 402772408
Original change's description:
> Revert "Dawn: Use no Tint Program at all in shader compilation cache checking"
>
> This reverts commit 7fcdc9036915542a08d5b213bb717fea33a125ef.
>
> Reason for revert: This broke the roll into Skia due to UB caused by a right-shift of 64 in the Rotl function:
> https://logs.chromium.org/logs/skia/705dbe4282a5c611/+/steps/dm/0/stdout
>
> Bug: 402772740, 402772408
> Original change's description:
> > Dawn: Use no Tint Program at all in shader compilation cache checking
> >
> > This CL remove Tint Program from all backends' shader compilation cache
> > key and replace it with SHA3-512 hash of shader module. With this CL,
> > Tint Program might not be need until actual cache miss in backend shader
> > compilation or front end WGSL parsing cache miss.
> >
> > Bug: 402772740, 402772408
> > Change-Id: I76ec38c03b15cd3dc4ba8c294dafb3ce9cc61dce
> > Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/232375
> > Reviewed-by: Corentin Wallez <cwallez@chromium.org>
> > Commit-Queue: Zhaoming Jiang <zhaoming.jiang@microsoft.com>
> > Auto-Submit: Zhaoming Jiang <zhaoming.jiang@microsoft.com>
>
> TBR=cwallez@chromium.org,geofflang@chromium.org,dawn-scoped@luci-project-accounts.iam.gserviceaccount.com,zhaoming.jiang@microsoft.com
>
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: 402772740, 402772408
> Change-Id: I39f25c1a45b02eb42d10374a67a94e53dfb09300
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/237734
> Reviewed-by: James Price <jrprice@google.com>
> Reviewed-by: dan sinclair <dsinclair@chromium.org>
> Commit-Queue: James Price <jrprice@google.com>

Bug: 402772740, 402772408
Change-Id: Ia98ced1fdbbcd7822b656886d9ea660bb2899c1c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/237894
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Auto-Submit: Zhaoming Jiang <zhaoming.jiang@microsoft.com>
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@microsoft.com>
14 files changed
tree: 3ca77199f2adaa927ac5a041fe93a189578e4175
  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.