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This CL fix an issue related to tiering the maxBufferSize and maxStorageBufferBindingSize limits. In detail, this CL: 1. Fix the maxStorageBufferBindingSize tiers to [128MB, 1GB, 2GB-4, 4GB-4] instead of the original last two 2GB-1 and 4GB-1, holding the guarantee that maxStorageBufferBindingSize is a multiple of 4 bytes. 2. Add a maxBufferSize tier 4GB, ensuring the guarantee that maxStorageBufferBindingSize must be no larger than maxBufferSize in case of it tiered to 4GB-4. Previously the largest maxBufferSize tier is 2GB, making this guarantee broken after tiering. 3. Move the adapter limits normalization logics in adapter initializing to Limits.cpp to allow unittest. Related unittests implemented. 4. Normalize tiered limits to ensure that tiered maxStorageBufferBindingSize and maxUniformBufferBindingSize are no larger than tiered maxBufferSize. Related unittests implemented. Issue: dawn:1780 Change-Id: I4821f196fa89c7f18ebbf8e5e45df1c3268db895 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/130120 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: 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, 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.
- Tint bug tracker if you find issues with Tint.
- 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
- Tint mirror for standalone usage.
Documentation table of content
Developer documentation:
- Dawn overview
- Building
- Contributing
- Code of Conduct
- Testing Dawn
- Debugging Dawn
- Dawn's infrastructure
- Dawn errors
- Tint experimental extensions
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.