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a5988a3058
This patch make HLSL writer support emitting f16 types, f16 literals, f16 constructor and convertor. Unittests are also implemented. The HLSL writer will emit f16 literal as `float16_t(1.23h)`, making the type explicit, and map f16 types as follow. The generated code require DXC with SM6.0 or higher, and `-enable-16bit-types`. WGSL type -> HLSL type f16 -> float16_t vec2<f16> -> vector<float16_t, 2> vec3<f16> -> vector<float16_t, 3> vec4<f16> -> vector<float16_t, 4> mat2x2<f16> -> matrix<float16_t, 2, 2> mat2x3<f16> -> matrix<float16_t, 2, 3> mat2x4<f16> -> matrix<float16_t, 2, 4> mat3x2<f16> -> matrix<float16_t, 3, 2> mat3x3<f16> -> matrix<float16_t, 3, 3> mat3x4<f16> -> matrix<float16_t, 3, 4> mat4x2<f16> -> matrix<float16_t, 4, 2> mat4x3<f16> -> matrix<float16_t, 4, 3> mat4x4<f16> -> matrix<float16_t, 4, 4> Bug: tint:1473, tint:1502 Change-Id: Iaf564f3ce29ace2984cef19d7df5a7dfb0fab2ef Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/95685 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.