Support SDXL Turbo

[walking-octopus]

I'm not aware what changes in the architecture were made, but Stability did release a new model promising significant speed-ups in sampling time..

https://stability.ai/news/stability-ai-sdxl-turbo
https://huggingface.co/stabilityai/sdxl-turbo
https://stability.ai/research/adversarial-diffusion-distillation

[Jonathhhan]

@walking-octopus SD-Turbo already works very well: https://huggingface.co/stabilityai/sd-turbo/tree/main
Just tried it with CFG 1 and one sample step.
Img2Img works very well, too (had the best results with around 5 sample steps and CFG 1).
#112

[h3ndrik]

@Jonathhhan i think this request is for SDXL-Turbo, not SD-Turbo.

But there is already a pull request in the making: #117

[Jonathhhan]

@h3ndrik true and I know (maybe my comment was a little off-topic).

To quote from the link I posted:

SDXL-Turbo is currently not supported. The supported version at the moment is SD-Turbo. You can directly download safetensors from https://huggingface.co/stabilityai/sd-turbo and use it. I'm currently in the process of attempting to add support for SDXL. Once SDXL is supported, SDXL-Turbo will also be supported.

[leejet]

@walking-octopus SDXL Turbo is now supported.