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If there is an empty row at the beginning of a copy region due to
alignment adjustment, this copy region split by 2D texture splitter
will be definitely incorrect for 3D textures because every depth
slice (except the first slice) will wrongly skip one row. We need
to recompute this copy region via modifying this copy region and
adding a couple more copy regions for the empty first row issue.
The idea of recomputation is:
- modify this copy region and don't copy the last row in order to
make its bufferSize.height not exceed rowsPerImage,
- use one more copy region to handle the last row of each depth
slice except the last depth slice,
- use another copy region to handle the last row of the last depth
slice.
Bug: dawn:547
Change-Id: Ib2f6019963ed29d62a9f13d7316b5f04801db8c9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/52341
Commit-Queue: Yunchao He <yunchao.he@intel.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
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.hversion that Dawn implements. - A C++ wrapper for the
webgpu.h.
- The
- 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:
- Dawn's bug tracker if you find issues with Dawn.
- Dawn's mailing list for other discussions related to Dawn.
- Dawn's source code
- Dawn's Matrix chatroom for live discussion around contributing or using Dawn.
- WebGPU's Matrix chatroom
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.