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dawn / dawn / 84481bbb35d2b8de9439087e0b5abb89ed1bab42
commit84481bbb35d2b8de9439087e0b5abb89ed1bab42[log] [tgz]
authorHao Li <hao.x.li@intel.com>Mon Jun 07 03:17:10 2021 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Jun 07 03:17:10 2021 +0000
tree22dd6a5db368c08ce38517443749a4f5c5c63af4
parentadc5cddde035ce89d8f525d606ec10d3ccf1b1da [diff]
Query API: Re-enable Timestamp Query on Metal

Add timestamp query back in Metal supported extensions, and calculate
the timestamp period based on CPU timestamps and GPU timestamps sampled
on device.

There is a crash issue (dawn:545) on macOS 10.15 on AMD devices, but
cannot be reproduced on macOS 11.0+, we can just disable it on AMD with
macOS 10.15 in the following CL.

Bug: dawn:434
Change-Id: Icb4823e7c3115776e64c6a41fd0aea0f6536ccdf
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/51720
Commit-Queue: Hao Li <hao.x.li@intel.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
4 files changed
tree: 22dd6a5db368c08ce38517443749a4f5c5c63af4
  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.