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dawn / dawn / refs/heads/chromium/4512
commit880a3d6311971046304506bd18dc2e936447cb15[log] [tgz]
authorHao Li <hao.x.li@intel.com>Tue May 18 01:13:08 2021 +0000
committerCommit Bot service account <commit-bot@chromium.org>Tue May 18 01:13:08 2021 +0000
treed4f700c5921cece383299a8b111d8884654a165b
parent21ce5d2965485853c2f87e386fd356689486b7c2 [diff]
Fix query index of availability in timestamp shader

Currently we use offset to calculate the index of the queries in
timestamp compute shader, which is incorrect. The offset is the buffer
offset where we start to write the query results, and has nothing to
do with query index. In the query availability detection, the query
index should be based on the parameter firstQuery.

Add new test for resolving a timestamp query twice to the same
destination buffer with potentially overlapping ranges.

Bug: dawn:434
Change-Id: I2b5c5b192cf5d987ac48187e8240a25937957f51
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/50760
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Hao Li <hao.x.li@intel.com>
5 files changed
tree: d4f700c5921cece383299a8b111d8884654a165b
  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.