Run dawn_end2end_tests on all available system adapters

By default, the tests will run on all available adapters, so this
adds an --exclusive-device-type-preference flag which takes a list
of comma-delimited device type preferences (discrete,integrated,cpu).
Tests will run only on the first available device type.
This is useful because in Chromium's test infrastructure, the same
test arguments are passed to one machine on which we want to use the
discrete GPU, as well as one machine where we want to use the
integrated GPU.

Bug: dawn:396
Change-Id: Id936fff3356eef3c6d12dfd1407b0e1f0f020dc1
Commit-Queue: Austin Eng <>
Reviewed-by: Stephen White <>
6 files changed
tree: 0cf3bcc4c95b26c074fd58e7fc2751d3094b321d
  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.