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dawn/dawn/7ab028c1354171bbd4d41cefa1afee7676d69abe
commit
7ab028c1354171bbd4d41cefa1afee7676d69abe
[log]
author
Natalie Chouinard <chouinard@google.com>
Fri May 08 09:40:06 2026 -0700
committer
dawn-scoped@luci-project-accounts.iam.gserviceaccount.com <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri May 08 09:40:06 2026 -0700
tree
d52e125aa6c9219b1a8a3a87ad1b5dfc254a84ef
parent
887efdf0f98e329869c080f1faba2a812873399a [diff]
[tint][spirv] Support f16 Framebuffer Fetch

This change enables Framebuffer Fetch on Vulkan to be enabled alongside
f16 support. Vulkan does not allow OpTypeImage to have an f16 sampled
type, so f32 is used instead and the OpImageRead is decorated with
RelaxedPrecision.

As a follow up, RelaxedPrecision decorations should also be applied to
the chain of lets/swizzle instructions that lead up to the convert back
to f16 (crbug.com/510801348).

Bug: 493892934
Change-Id: I614c87f7f33b6e3399ce6681ea8163256a0ab5d4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/307255
Commit-Queue: Natalie Chouinard <chouinard@google.com>
Reviewed-by: James Price <jrprice@google.com>
14 files changed
tree: d52e125aa6c9219b1a8a3a87ad1b5dfc254a84ef
  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.