Support multiple array layers in one texture-to-texture copy command

This patch adds the supports of copying multiple array layers of a
2D array texture in one texture-to-texture call. Note that in D3D12
and Metal it is implemented by copying each array layer in a for-loop.

Note that we need extra validations when the source and destination
texture are the same one in a texture-to-texture copy. This CL does
not include these validations and we will add them in another one.

BUG=dawn:18
TEST=dawn_unittests, dawn_end2end_tests

Change-Id: I1239543e5692e140474b3c1de0b3579be449e283
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/22140
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
7 files changed
tree: d37a6d1f544d0b150a15f28f58aef3d50a66c89e
  1. build_overrides/
  2. docs/
  3. examples/
  4. generator/
  5. infra/
  6. scripts/
  7. src/
  8. third_party/
  9. tools/
  10. .clang-format
  11. .gitattributes
  12. .gitignore
  13. .gn
  14. AUTHORS
  15. BUILD.gn
  16. CMakeLists.txt
  17. codereview.settings
  18. CONTRIBUTING.md
  19. dawn.json
  20. dawn_wire.json
  21. DEPS
  22. LICENSE
  23. OWNERS
  24. PRESUBMIT.py
  25. README.chromium
  26. README.md
README.md

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)

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.