Implement internal storage for buffer usage and buffer binding type

In the timestamp internal pipeline, the ResolveQuery buffer cannnot be
binded as Storage buffer in binding group layout due to it has not
Storage usage.
Add InternalStorageBuffer for buffer usage and
InternalStorageBufferBinding for buffer binding type, make the
QueryResolve buffer implicitly get InternalStorageBuffer and only
compatible with InternalStorageBufferBinding in BGL, not Storage buffer
binding type.

Bug: dawn:797
Change-Id: I286339e703e26d3786c706ded03f850ca17355fb
Reviewed-by: Jiawei Shao <>
Commit-Queue: Hao Li <>
21 files changed
tree: 7be1effe11e778e4d4328b65f80f1b6880fdd373
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. examples/
  5. generator/
  6. infra/
  7. scripts/
  8. src/
  9. third_party/
  10. tools/
  11. .clang-format
  12. .gitattributes
  13. .gitignore
  14. .gn
  17. CMakeLists.txt
  18. codereview.settings
  19. dawn.json
  20. dawn_wire.json
  21. DEPS
  24. OWNERS
  26. README.chromium

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 the webgpu.h docs)




Apache 2.0 Public License, please see LICENSE.


This is not an officially supported Google product.