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This CL modifies the way adapter creating devices, adds `shader-f16` feature, and deprecates the `dawn-shader-float16` feature which is no longer used. Details: 1. Parse the toggles chained with device descriptor in `adapter::CreateDeviceInternal`, which are then used to validate features requirement within `CreateDeviceInternal` and passed to device constructor as initializer. 2. When creating device, validate features requirement in `CreateDeviceInternal` with toggles known, make sure to fail the device creation if a required feature is not supported by adapter or is guarded by certain toggles which were not enabled/disabled. Feature ShaderF16 and ChromiumExperimentalDp4a are validated in this way. Unittest is added to check creating devices with toggles-guarded features required. 3. Add `shader-f16` feature, which allow `using f16;` in WGSL code. End-to-end tests are added to test a trival f16 WGSL shader could be used if and only if the device has `shader-f16` feature. 4. Deprecate the `dawn-shader-float16` feature, which will be completely removed after cleaning up Blink code. Bug: dawn:1510 Change-Id: I6cb2dcbe1ee584fdd6131c62df1ee850b881dbd2 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100802 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com> Reviewed-by: Austin Eng <enga@chromium.org> Reviewed-by: Corentin Wallez <cwallez@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.