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In Vulkan the swapchain can stop working if the window resizes and doesn't match the size of the swapchain images anymore. WebGPU applications might not handle resizes instantly, so if the swapchain becomes incompatible we give them a temporary texture that we'll then blit inside the real swapchain texture. This also handles the case where the application requires more usages than what the swapchain can support. In addition, temporary checks are added that fail swapchain creation if the VkSurface doesn't support BGRA8Unorm which is the only allowed format for WebGPU swapchains at the moment. SwapChainTests should now work on Vulkan and are enabled. Bug: dawn:269 Change-Id: I812c0653125ed86d3a0f8f67347e961c7b207a98 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/30700 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Stephen White <senorblanco@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 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
Helpful links:
- Dawn's bug tracker if you find issues with Dawn.
- 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
Documentation table of content
Developer documentation:
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.