ComfyUI-sonar

Extremely WIP and untested implementation of Sonar sampling. Currently it may not be even close to working properly.

Only supports Euler and Euler Ancestral sampling.

Description

See https://github.com/Kahsolt/stable-diffusion-webui-sonar for a more in-depth explanation.

The direction parameter should (unless I screwed it up) work like setting sign to positive or negative: 1.0 is positive, -1.0 is negative. You can also potentially play with fractional values.

Like the original documentation says, you normally would not want to set momentum to a value below 0.85. The default values are considered reasonable, doing stuff like using a negative direction may not produce good results.

Credits

Original implementation: https://github.com/Kahsolt/stable-diffusion-webui-sonar

My version basically just rips off this implementation for Diffusers: https://github.com/alexblattner/modified-euler-samplers-for-sonar-diffusers/