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1f25ea94bb
This patch tries to use the data directly in deserialized buffer when the data is "data-only" and doesn't affect the control flow instead of allocating and copying into a temporary buffer. Due to the protection of TOCTOU attacks, currently we only set "wire_is_data_only" on the parameter "data" in Queue.WriteBuffer() and Queue.WriteTexture(). With this patch, the performance of dawn_perf_tests BufferUploadPerf.Run/*_WriteBuffer_BufferSize_* with "-w" will be greatly improved (~20%) when the upload buffer size is greater than 1MB. BUG=chromium:1266727 Change-Id: I7a9d54c9b505975235ee37aa72ee97f082ad3aa3 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/72063 Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
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:
- Dawn overview
- Building Dawn
- Contributing to Dawn
- Testing Dawn
- Debugging Dawn
- Dawn's infrastructure
- Dawn errors
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.