dawn_wire: Make all objects owned by the client

This removes the logic where the Client owns the Device and the
Device owns all other objects. Ownership should be tracked in
dawn_native either with refcounting or validation to disallow
operations after an object's parent has been destroyed.

This simplifies the wire client code in that the client only
tracks allocated handles and does not manage parent/child lifetimes.
This is an important simplification so we can support multiple WebGPU
instances, adapters, and devices on a single wire.

Bug: dawn:384
Change-Id: I8ecc7c368130b8917202150c467b5f0e7d4b753e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/37000
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
11 files changed
tree: 7b90e14a6727f2d656c00ebb766e5aa958661d0a
  1. .clang-format
  2. .gitattributes
  3. .gitignore
  4. .gn
  5. AUTHORS
  6. BUILD.gn
  7. CMakeLists.txt
  8. CONTRIBUTING.md
  9. DEPS
  10. LICENSE
  11. OWNERS
  12. PRESUBMIT.py
  13. README.chromium
  14. README.md
  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/
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 the webgpu.h docs)

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.