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2d0007ca8f
Change backend connection in Instance.cpp to store a bitset of backends that have been connected. This lets us only connect to a single backend if AdapterDiscoveryOptions are passed explicitly, and track which connections have/have not been made. Later, we can connect to the rest of the backends if more are requested. This is part of some improvements to the existing code so we can selectively discover adapters and control discovery of the high-performance, low-power, and fallback WebGPU adapters. Bug: chromium:1266550 Change-Id: Iceb0d3f71751f5aac6218996ace3cf89deda8a29 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/69521 Commit-Queue: Austin Eng <enga@chromium.org> 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:
- 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.