Could you please explain what's line 1199 of pipeline_controlnet_sd_xl_img2img.py used for? #5
Description
The equation is "sample = pred_original_sample * (fac) + latents * (1 - fac)", If it's to sample z_{t-1}, it should be "z{t-1} = pred_original_sample * (fac) + epsilon_t * (1 - fac)" according to the ddim paper. Could you please explain why you did in this way?