Use an id count to clamp ID in subgroupShuffle. When doing a subgroupSuffle, use a subgroup count instead of the subgroup size builtin. This gives a tighter bound on the actual number of subgroups being invoked. Bug: 435246627 Change-Id: Ifb3bb1cef635c32c65ff2595e3ac2e82f7429dc4 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/333515 Reviewed-by: James Price <jrprice@google.com> Commit-Queue: dan sinclair <dsinclair@chromium.org>

tree: 93f05a866ea433c9db553c17afd1e9e248a329b3

README.md

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the 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, Metal, Vulkan and OpenGL. See per API support for more details.
A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

Helpful links:

Dawn bug tracker if you find issues with Dawn. Create a new issue here.
Tint bug tracker if you find issues with Tint. Create a new issue here.
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)

License

BSD 3-Clause License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.