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2f9a98870e
The resolver now wraps sem::Expression objects with a sem::Load object anywhere that the load rule is invoked. sem::Expression provides an `UnwrapLoad()` method that returns the inner expression (or passthrough, if no load is present), which is analaguous to Type::UnwrapRef(). The logic for alias analysis in `RegisterLoadIfNeeded` has been folded into the new `Resolver::Load` method. Fixed up many transforms and tests. The only difference in output is for a single SPIR-V backend test, where some IDs have changed due to slight re-ordering of when expressions are generated. There may be further clean-ups possible (e.g. removing unnecessary calls to `UnwrapRef`, and simplifying places in the SPIR-V writer or transforms that deal with memory accesses), but these can be addressed in future patches. Fixed: tint:1654 Change-Id: I69adecfe9251faae46546b64d0cdc29eea26cd4e Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99706 Commit-Queue: James Price <jrprice@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: Antonio Maiorano <amaiorano@google.com> Reviewed-by: Ben Clayton <bclayton@google.com>
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.