Revert "Check FP16 support on vulkan backend"

This reverts commit bdc05c3d5fef780382c3fd5e5ebcb14bd929819a.

Reason for revert: Likely culprit for

Bug: chromium:1087896

Original change's description:
> Check FP16 support on vulkan backend
> This patch check FP16 support on vulkan backend, and introduces
> the shader_float16 extension.
> BUG=dawn:426
> TEST=dawn_end2end_tests
> Change-Id: Ie09568a416ce9eb2c11afeede3e7da520550d5fb
> Reviewed-on:
> Commit-Queue: Xinghua Cao <>
> Reviewed-by: Corentin Wallez <>
> Reviewed-by: Jiawei Shao <>
> Reviewed-by: Kai Ninomiya <>
> Reviewed-by: Austin Eng <>,,,,,,,,

Bug: dawn:426
Change-Id: I8a42cf01ab32b3504bc7c1a335307db761424bdd
Commit-Queue: Corentin Wallez <>
Reviewed-by: Corentin Wallez <>
11 files changed
tree: 86e90acf3566886c84a072a5ca7fba28399db097
  1. .clang-format
  2. .gitattributes
  3. .gitignore
  4. .gn
  7. CMakeLists.txt
  9. DEPS
  11. OWNERS
  13. README.chromium
  15. build_overrides/
  16. codereview.settings
  17. dawn.json
  18. dawn_wire.json
  19. docs/
  20. examples/
  21. generator/
  22. infra/
  23. scripts/
  24. src/
  25. third_party/
  26. tools/

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the work-in-progress 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 on Windows 10
    • Metal on macOS and iOS
    • Vulkan on Windows, Linux, ChromeOS, Android and Fuchsia
    • OpenGL as best effort where available
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with webgpu.h docs)




Apache 2.0 Public License, please see LICENSE.


This is not an officially supported Google product.