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dawn / dawn / 18f63b4e16c7fa2e77cbc5d7641a1a2264e9aa34
commit18f63b4e16c7fa2e77cbc5d7641a1a2264e9aa34[log] [tgz]
authorDawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>Wed Jul 21 15:41:29 2021 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jul 21 15:41:29 2021 +0000
tree804f46d298756a335c9084ccf6681fa81c40f535
parentf50c22b9985e5162ece8afe326fb14c8c6b161b6 [diff]
Metal: Handle failure to allocate an MTLCommandBuffer

This requires restructuring the logic around MTLCommandBuffer allocation
so that GetPendingCommandContext is guaranteed to never fail. Logic in
the Metal backend is now similar to the Vulkan backend: the
MTLCommandBuffer is prepared at device initialization time, or after a
submission, such that it is always valid.

A new mUsed boolean is added to CommandRecordingContext to say whether
any commands have been recording. Previously mCommandBuffer was used for
that purpose, but it is now always non-null.

Bug: dawn:801

Change-Id: I5dc6747d1e6d538054010cc50533a03a49af921a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/58720
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
7 files changed
tree: 804f46d298756a335c9084ccf6681fa81c40f535
  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
  15. AUTHORS
  16. BUILD.gn
  17. CMakeLists.txt
  18. codereview.settings
  19. dawn.json
  20. dawn_wire.json
  21. DEPS
  22. DIR_METADATA
  23. LICENSE
  24. OWNERS
  25. PRESUBMIT.py
  26. README.chromium
  27. 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 the webgpu.h docs)

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.