| import torch |
| import comfy.utils |
|
|
| class PatchModelAddDownscale: |
| upscale_methods = ["bicubic", "nearest-exact", "bilinear", "area", "bislerp"] |
| @classmethod |
| def INPUT_TYPES(s): |
| return {"required": { "model": ("MODEL",), |
| "block_number": ("INT", {"default": 3, "min": 1, "max": 32, "step": 1}), |
| "downscale_factor": ("FLOAT", {"default": 2.0, "min": 0.1, "max": 9.0, "step": 0.001}), |
| "start_percent": ("FLOAT", {"default": 0.0, "min": 0.0, "max": 1.0, "step": 0.001}), |
| "end_percent": ("FLOAT", {"default": 0.35, "min": 0.0, "max": 1.0, "step": 0.001}), |
| "downscale_after_skip": ("BOOLEAN", {"default": True}), |
| "downscale_method": (s.upscale_methods,), |
| "upscale_method": (s.upscale_methods,), |
| }} |
| RETURN_TYPES = ("MODEL",) |
| FUNCTION = "patch" |
|
|
| CATEGORY = "model_patches/unet" |
|
|
| def patch(self, model, block_number, downscale_factor, start_percent, end_percent, downscale_after_skip, downscale_method, upscale_method): |
| model_sampling = model.get_model_object("model_sampling") |
| sigma_start = model_sampling.percent_to_sigma(start_percent) |
| sigma_end = model_sampling.percent_to_sigma(end_percent) |
|
|
| def input_block_patch(h, transformer_options): |
| if transformer_options["block"][1] == block_number: |
| sigma = transformer_options["sigmas"][0].item() |
| if sigma <= sigma_start and sigma >= sigma_end: |
| h = comfy.utils.common_upscale(h, round(h.shape[-1] * (1.0 / downscale_factor)), round(h.shape[-2] * (1.0 / downscale_factor)), downscale_method, "disabled") |
| return h |
|
|
| def output_block_patch(h, hsp, transformer_options): |
| if h.shape[2] != hsp.shape[2]: |
| h = comfy.utils.common_upscale(h, hsp.shape[-1], hsp.shape[-2], upscale_method, "disabled") |
| return h, hsp |
|
|
| m = model.clone() |
| if downscale_after_skip: |
| m.set_model_input_block_patch_after_skip(input_block_patch) |
| else: |
| m.set_model_input_block_patch(input_block_patch) |
| m.set_model_output_block_patch(output_block_patch) |
| return (m, ) |
|
|
| NODE_CLASS_MAPPINGS = { |
| "PatchModelAddDownscale": PatchModelAddDownscale, |
| } |
|
|
| NODE_DISPLAY_NAME_MAPPINGS = { |
| |
| "PatchModelAddDownscale": "PatchModelAddDownscale (Kohya Deep Shrink)", |
| } |
|
|
