suggestion: Support for AMD GPU for windows

[Suplexxer]

First off, Automatic1111 is fantastic, featurewise and develops really well. Good job and keep it up!

I'd wish i'd be able to take part in tho. With a AMD GPU and windows setup its not doable to my knowledge (i know about rocm)
I want to suggest adding support with AMDs RDNA2 /vulcan api as i've seen others implement funktioning webui solutions that work very well, speed wise.
With a RX6950xt i get roughly 4.5 it/sec which is definitely acceptable.

With a ONNX conversion using ML driver i get about 1-1.1 it/sek which is livable, still about x10-20 faster than CPU only.

I know we are like a dozen people that have amd GPUs but i diden't know about stable diffusion untill after i went with AMD. hope you guys can give us AMD gang a treat.

[victorca25]

The AMD gang really should be asking AMD for better AI support instead 😄