Probably works the same as any other container that needs such acceleration (plex, CUDA) just pass the device over and the CAPs. There are guides online. Whether or not the windows in a container will use it idk.

Windows is virtualised here.

Yeah and you can pass a virtualized GPU to a VM

What is the state of virtio gpu drivers? I was under the impression that you only get opengl acceleration unless you pass over a whole GPU.

It should work just fine with Intel GPUs at least

Works on wine via vulcan/opencl