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e53bfc561c
Chromium has switched to using a fixed key (0) for quite some time. Using a fixed key enables future work needed for concurrent access of external textures both inside Dawn (e.g. importing a video frame twice) or across Dawn and GL. We want to try scoping the Acquire/Release calls to command list submission, but with a non-fixed key concurrent access for the same resource becomes ambiguous. Bug: chromium:1241533 Change-Id: Ia8ff473b8c9c731c411a3fd59d69213f2d903e61 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/75642 Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org> Reviewed-by: Loko Kung <lokokung@google.com> Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Austin Eng <enga@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:
- 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.