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The Mesa Gallium llvmpipe driver is a software rasterizer that uses LLVM to do runtime code generation. It seems to put incorrect value for maxFragmentCombinedOutputResources, like we see on desktop GPUs. Some relative values are as below. vkLimits.maxFragmentCombinedOutputResources: 8 kMaxColorAttachments: 8 baseLimits.v1.maxStorageTexturesPerShaderStage: 4 baseLimits.v1.maxStorageBuffersPerShaderStage: 8 This CL will skip the check of this limit on llvmpipe, like we did for desktop GPUs. BUG=dawn:1311 Change-Id: I1698f6e26dd62b56f3819980fa2dcc986c9c5ba3 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/81941 Reviewed-by: Jiawei Shao <jiawei.shao@intel.com> Reviewed-by: Hao Li <hao.x.li@intel.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.