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dawn/dawn/HEAD
commit
5326a2acd1a0bc04637e3618b2095894ba97f3bd
[log]
author
Corentin Wallez <cwallez@chromium.org>
Wed May 06 10:39:40 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Wed May 06 10:39:40 2026 -0700
tree
ba8d6efaadc0fcabb7b40f21ea040345409a82b3
parent
fc854e1582ea3b493a4629156950d8dfb9244215 [diff]
[dawn][native] Quantize timestamp even on 1ns timestamp hardware

The timestamp conversion compute shader is also used for quantization so
run it if either quantization or conversion is needed.

This adds a new capability query on backend devices to let the WebGPU
backend tell the frontend that quantization is not needed since it's
already taken care of by the inner device.

Bug: 502434484
Change-Id: I070f5ed1427395a66e48d2a5d4fc360feedd0f0b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/305815
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
9 files changed
tree: ba8d6efaadc0fcabb7b40f21ea040345409a82b3
  1. .github/
  2. .vscode/
  3. agents/
  4. build_overrides/
  5. docs/
  6. generator/
  7. include/
  8. infra/
  9. scripts/
  10. src/
  11. test/
  12. third_party/
  13. tools/
  14. webgpu-cts/
  15. build
  16. buildtools
  17. testing
  18. .bazelrc
  19. .clang-format
  20. .clang-format-ignore
  21. .clang-tidy
  22. .git-blame-ignore-revs
  23. .gitattributes
  24. .gitignore
  25. .gitmodules
  26. .gn
  27. .style.yapf
  28. .vpython3
  29. AUTHORS
  30. BUILD.bazel
  31. BUILD.gn
  32. CMakeLists.txt
  33. CMakeSettings.json
  34. CODE_OF_CONDUCT.md
  35. codereview.settings
  36. CONTRIBUTING.md
  37. CPPLINT.cfg
  38. DEPS
  39. DIR_METADATA
  40. go.mod
  41. go.sum
  42. go_presubmit_support.py
  43. LICENSE
  44. OWNERS
  45. PRESUBMIT.py
  46. README.chromium
  47. README.md
  48. unsafe_buffers_paths.txt
  49. WATCHLISTS
  50. 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.