Implement texture subresource on Vulkan

This change implemented texture subresource on Vulkan. It added a new
function to handle barriers for texture subresource for bind groups.
It also simplified barriers which are set for texture clear and copy.

Before this patch, all barriers are done upon all mip levels and all
array layers. With this patch, barriers are done upon particular mip
level(s) and array layer(s).

We may need more texture subresource end2end tests for copy and clear
opterations. I will visit that later.

Bug: dawn:157

Change-Id: Ie2247c6315326494f2d3736334e84b2867a16c17
Commit-Queue: Yunchao He <>
Reviewed-by: Austin Eng <>
5 files changed
tree: 315944ad634092f324891997643d041a202f1e64
  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.