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This patch make MSL writer support emitting f16 types, f16 literals, f16 constructor and convertor. Unittests are also implemented. The MSL writer will emit f16 literal as `1.23h`, and map f16 types as follow: WGSL type -> MSL type f16 -> half vec2<f16> -> half2 vec3<f16> -> half3 vec4<f16> -> half4 mat2x2<f16> -> half2x2 mat2x3<f16> -> half2x3 mat2x4<f16> -> half2x4 mat3x2<f16> -> half3x2 mat3x3<f16> -> half3x3 mat3x4<f16> -> half3x4 mat4x2<f16> -> half4x2 mat4x3<f16> -> half4x3 mat4x4<f16> -> half4x4 Bug: tint:1473, tint:1502 Change-Id: Id91821e1a32d48c80bad9a0753faa5247835b0f7 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/95686 Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.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 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
- Tint is a compiler for the WebGPU Shader Language (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.