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import torch |
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import contextlib |
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import math |
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from comfy import model_management |
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from .ldm.util import instantiate_from_config |
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from .ldm.models.autoencoder import AutoencoderKL |
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import yaml |
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import comfy.utils |
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from . import clip_vision |
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from . import gligen |
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from . import diffusers_convert |
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from . import model_base |
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from . import model_detection |
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from . import sd1_clip |
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from . import sd2_clip |
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from . import sdxl_clip |
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import comfy.model_patcher |
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import comfy.lora |
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import comfy.t2i_adapter.adapter |
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import comfy.supported_models_base |
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def load_model_weights(model, sd): |
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m, u = model.load_state_dict(sd, strict=False) |
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m = set(m) |
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unexpected_keys = set(u) |
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k = list(sd.keys()) |
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for x in k: |
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if x not in unexpected_keys: |
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w = sd.pop(x) |
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del w |
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if len(m) > 0: |
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print("missing", m) |
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return model |
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def load_clip_weights(model, sd): |
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k = list(sd.keys()) |
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for x in k: |
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if x.startswith("cond_stage_model.transformer.") and not x.startswith("cond_stage_model.transformer.text_model."): |
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y = x.replace("cond_stage_model.transformer.", "cond_stage_model.transformer.text_model.") |
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sd[y] = sd.pop(x) |
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if 'cond_stage_model.transformer.text_model.embeddings.position_ids' in sd: |
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ids = sd['cond_stage_model.transformer.text_model.embeddings.position_ids'] |
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if ids.dtype == torch.float32: |
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sd['cond_stage_model.transformer.text_model.embeddings.position_ids'] = ids.round() |
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sd = comfy.utils.transformers_convert(sd, "cond_stage_model.model.", "cond_stage_model.transformer.text_model.", 24) |
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return load_model_weights(model, sd) |
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def load_lora_for_models(model, clip, lora, strength_model, strength_clip): |
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key_map = comfy.lora.model_lora_keys_unet(model.model) |
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key_map = comfy.lora.model_lora_keys_clip(clip.cond_stage_model, key_map) |
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loaded = comfy.lora.load_lora(lora, key_map) |
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new_modelpatcher = model.clone() |
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k = new_modelpatcher.add_patches(loaded, strength_model) |
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new_clip = clip.clone() |
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k1 = new_clip.add_patches(loaded, strength_clip) |
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k = set(k) |
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k1 = set(k1) |
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for x in loaded: |
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if (x not in k) and (x not in k1): |
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print("NOT LOADED", x) |
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return (new_modelpatcher, new_clip) |
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class CLIP: |
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def __init__(self, target=None, embedding_directory=None, no_init=False): |
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if no_init: |
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return |
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params = target.params.copy() |
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clip = target.clip |
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tokenizer = target.tokenizer |
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load_device = model_management.text_encoder_device() |
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offload_device = model_management.text_encoder_offload_device() |
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params['device'] = offload_device |
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if model_management.should_use_fp16(load_device, prioritize_performance=False): |
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params['dtype'] = torch.float16 |
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else: |
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params['dtype'] = torch.float32 |
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self.cond_stage_model = clip(**(params)) |
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self.tokenizer = tokenizer(embedding_directory=embedding_directory) |
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self.patcher = comfy.model_patcher.ModelPatcher(self.cond_stage_model, load_device=load_device, offload_device=offload_device) |
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self.layer_idx = None |
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def clone(self): |
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n = CLIP(no_init=True) |
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n.patcher = self.patcher.clone() |
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n.cond_stage_model = self.cond_stage_model |
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n.tokenizer = self.tokenizer |
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n.layer_idx = self.layer_idx |
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return n |
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def add_patches(self, patches, strength_patch=1.0, strength_model=1.0): |
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return self.patcher.add_patches(patches, strength_patch, strength_model) |
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def clip_layer(self, layer_idx): |
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self.layer_idx = layer_idx |
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def tokenize(self, text, return_word_ids=False): |
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return self.tokenizer.tokenize_with_weights(text, return_word_ids) |
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def encode_from_tokens(self, tokens, return_pooled=False): |
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if self.layer_idx is not None: |
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self.cond_stage_model.clip_layer(self.layer_idx) |
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else: |
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self.cond_stage_model.reset_clip_layer() |
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self.load_model() |
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cond, pooled = self.cond_stage_model.encode_token_weights(tokens) |
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if return_pooled: |
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return cond, pooled |
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return cond |
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def encode(self, text): |
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tokens = self.tokenize(text) |
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return self.encode_from_tokens(tokens) |
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def load_sd(self, sd): |
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return self.cond_stage_model.load_sd(sd) |
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def get_sd(self): |
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return self.cond_stage_model.state_dict() |
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def load_model(self): |
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model_management.load_model_gpu(self.patcher) |
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return self.patcher |
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def get_key_patches(self): |
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return self.patcher.get_key_patches() |
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class VAE: |
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def __init__(self, ckpt_path=None, device=None, config=None): |
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if config is None: |
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ddconfig = {'double_z': True, 'z_channels': 4, 'resolution': 256, 'in_channels': 3, 'out_ch': 3, 'ch': 128, 'ch_mult': [1, 2, 4, 4], 'num_res_blocks': 2, 'attn_resolutions': [], 'dropout': 0.0} |
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self.first_stage_model = AutoencoderKL(ddconfig, {'target': 'torch.nn.Identity'}, 4, monitor="val/rec_loss") |
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else: |
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self.first_stage_model = AutoencoderKL(**(config['params'])) |
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self.first_stage_model = self.first_stage_model.eval() |
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if ckpt_path is not None: |
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sd = comfy.utils.load_torch_file(ckpt_path) |
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if 'decoder.up_blocks.0.resnets.0.norm1.weight' in sd.keys(): |
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sd = diffusers_convert.convert_vae_state_dict(sd) |
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self.first_stage_model.load_state_dict(sd, strict=False) |
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if device is None: |
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device = model_management.vae_device() |
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self.device = device |
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self.offload_device = model_management.vae_offload_device() |
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self.vae_dtype = model_management.vae_dtype() |
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self.first_stage_model.to(self.vae_dtype) |
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def decode_tiled_(self, samples, tile_x=64, tile_y=64, overlap = 16): |
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steps = samples.shape[0] * comfy.utils.get_tiled_scale_steps(samples.shape[3], samples.shape[2], tile_x, tile_y, overlap) |
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steps += samples.shape[0] * comfy.utils.get_tiled_scale_steps(samples.shape[3], samples.shape[2], tile_x // 2, tile_y * 2, overlap) |
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steps += samples.shape[0] * comfy.utils.get_tiled_scale_steps(samples.shape[3], samples.shape[2], tile_x * 2, tile_y // 2, overlap) |
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pbar = comfy.utils.ProgressBar(steps) |
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decode_fn = lambda a: (self.first_stage_model.decode(a.to(self.vae_dtype).to(self.device)) + 1.0).float() |
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output = torch.clamp(( |
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(comfy.utils.tiled_scale(samples, decode_fn, tile_x // 2, tile_y * 2, overlap, upscale_amount = 8, pbar = pbar) + |
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comfy.utils.tiled_scale(samples, decode_fn, tile_x * 2, tile_y // 2, overlap, upscale_amount = 8, pbar = pbar) + |
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comfy.utils.tiled_scale(samples, decode_fn, tile_x, tile_y, overlap, upscale_amount = 8, pbar = pbar)) |
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/ 3.0) / 2.0, min=0.0, max=1.0) |
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return output |
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def encode_tiled_(self, pixel_samples, tile_x=512, tile_y=512, overlap = 64): |
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steps = pixel_samples.shape[0] * comfy.utils.get_tiled_scale_steps(pixel_samples.shape[3], pixel_samples.shape[2], tile_x, tile_y, overlap) |
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steps += pixel_samples.shape[0] * comfy.utils.get_tiled_scale_steps(pixel_samples.shape[3], pixel_samples.shape[2], tile_x // 2, tile_y * 2, overlap) |
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steps += pixel_samples.shape[0] * comfy.utils.get_tiled_scale_steps(pixel_samples.shape[3], pixel_samples.shape[2], tile_x * 2, tile_y // 2, overlap) |
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pbar = comfy.utils.ProgressBar(steps) |
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encode_fn = lambda a: self.first_stage_model.encode(2. * a.to(self.vae_dtype).to(self.device) - 1.).sample().float() |
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samples = comfy.utils.tiled_scale(pixel_samples, encode_fn, tile_x, tile_y, overlap, upscale_amount = (1/8), out_channels=4, pbar=pbar) |
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samples += comfy.utils.tiled_scale(pixel_samples, encode_fn, tile_x * 2, tile_y // 2, overlap, upscale_amount = (1/8), out_channels=4, pbar=pbar) |
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samples += comfy.utils.tiled_scale(pixel_samples, encode_fn, tile_x // 2, tile_y * 2, overlap, upscale_amount = (1/8), out_channels=4, pbar=pbar) |
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samples /= 3.0 |
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return samples |
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def decode(self, samples_in): |
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self.first_stage_model = self.first_stage_model.to(self.device) |
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try: |
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memory_used = (2562 * samples_in.shape[2] * samples_in.shape[3] * 64) * 1.7 |
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model_management.free_memory(memory_used, self.device) |
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free_memory = model_management.get_free_memory(self.device) |
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batch_number = int(free_memory / memory_used) |
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batch_number = max(1, batch_number) |
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pixel_samples = torch.empty((samples_in.shape[0], 3, round(samples_in.shape[2] * 8), round(samples_in.shape[3] * 8)), device="cpu") |
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for x in range(0, samples_in.shape[0], batch_number): |
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samples = samples_in[x:x+batch_number].to(self.vae_dtype).to(self.device) |
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pixel_samples[x:x+batch_number] = torch.clamp((self.first_stage_model.decode(samples) + 1.0) / 2.0, min=0.0, max=1.0).cpu().float() |
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except model_management.OOM_EXCEPTION as e: |
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print("Warning: Ran out of memory when regular VAE decoding, retrying with tiled VAE decoding.") |
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pixel_samples = self.decode_tiled_(samples_in) |
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self.first_stage_model = self.first_stage_model.to(self.offload_device) |
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pixel_samples = pixel_samples.cpu().movedim(1,-1) |
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return pixel_samples |
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def decode_tiled(self, samples, tile_x=64, tile_y=64, overlap = 16): |
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self.first_stage_model = self.first_stage_model.to(self.device) |
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output = self.decode_tiled_(samples, tile_x, tile_y, overlap) |
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self.first_stage_model = self.first_stage_model.to(self.offload_device) |
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return output.movedim(1,-1) |
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def encode(self, pixel_samples): |
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self.first_stage_model = self.first_stage_model.to(self.device) |
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pixel_samples = pixel_samples.movedim(-1,1) |
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try: |
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memory_used = (2078 * pixel_samples.shape[2] * pixel_samples.shape[3]) * 1.7 |
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model_management.free_memory(memory_used, self.device) |
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free_memory = model_management.get_free_memory(self.device) |
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batch_number = int(free_memory / memory_used) |
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batch_number = max(1, batch_number) |
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samples = torch.empty((pixel_samples.shape[0], 4, round(pixel_samples.shape[2] // 8), round(pixel_samples.shape[3] // 8)), device="cpu") |
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for x in range(0, pixel_samples.shape[0], batch_number): |
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pixels_in = (2. * pixel_samples[x:x+batch_number] - 1.).to(self.vae_dtype).to(self.device) |
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samples[x:x+batch_number] = self.first_stage_model.encode(pixels_in).sample().cpu().float() |
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except model_management.OOM_EXCEPTION as e: |
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print("Warning: Ran out of memory when regular VAE encoding, retrying with tiled VAE encoding.") |
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samples = self.encode_tiled_(pixel_samples) |
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self.first_stage_model = self.first_stage_model.to(self.offload_device) |
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return samples |
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def encode_tiled(self, pixel_samples, tile_x=512, tile_y=512, overlap = 64): |
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self.first_stage_model = self.first_stage_model.to(self.device) |
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pixel_samples = pixel_samples.movedim(-1,1) |
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samples = self.encode_tiled_(pixel_samples, tile_x=tile_x, tile_y=tile_y, overlap=overlap) |
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self.first_stage_model = self.first_stage_model.to(self.offload_device) |
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return samples |
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def get_sd(self): |
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return self.first_stage_model.state_dict() |
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class StyleModel: |
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def __init__(self, model, device="cpu"): |
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self.model = model |
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def get_cond(self, input): |
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return self.model(input.last_hidden_state) |
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def load_style_model(ckpt_path): |
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model_data = comfy.utils.load_torch_file(ckpt_path, safe_load=True) |
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keys = model_data.keys() |
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if "style_embedding" in keys: |
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model = comfy.t2i_adapter.adapter.StyleAdapter(width=1024, context_dim=768, num_head=8, n_layes=3, num_token=8) |
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else: |
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raise Exception("invalid style model {}".format(ckpt_path)) |
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model.load_state_dict(model_data) |
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return StyleModel(model) |
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def load_clip(ckpt_paths, embedding_directory=None): |
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clip_data = [] |
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for p in ckpt_paths: |
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clip_data.append(comfy.utils.load_torch_file(p, safe_load=True)) |
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class EmptyClass: |
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pass |
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for i in range(len(clip_data)): |
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if "transformer.resblocks.0.ln_1.weight" in clip_data[i]: |
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clip_data[i] = comfy.utils.transformers_convert(clip_data[i], "", "text_model.", 32) |
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clip_target = EmptyClass() |
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clip_target.params = {} |
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if len(clip_data) == 1: |
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if "text_model.encoder.layers.30.mlp.fc1.weight" in clip_data[0]: |
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clip_target.clip = sdxl_clip.SDXLRefinerClipModel |
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clip_target.tokenizer = sdxl_clip.SDXLTokenizer |
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elif "text_model.encoder.layers.22.mlp.fc1.weight" in clip_data[0]: |
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clip_target.clip = sd2_clip.SD2ClipModel |
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clip_target.tokenizer = sd2_clip.SD2Tokenizer |
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else: |
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clip_target.clip = sd1_clip.SD1ClipModel |
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clip_target.tokenizer = sd1_clip.SD1Tokenizer |
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else: |
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clip_target.clip = sdxl_clip.SDXLClipModel |
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clip_target.tokenizer = sdxl_clip.SDXLTokenizer |
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clip = CLIP(clip_target, embedding_directory=embedding_directory) |
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for c in clip_data: |
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m, u = clip.load_sd(c) |
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if len(m) > 0: |
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print("clip missing:", m) |
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if len(u) > 0: |
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print("clip unexpected:", u) |
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return clip |
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def load_gligen(ckpt_path): |
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data = comfy.utils.load_torch_file(ckpt_path, safe_load=True) |
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model = gligen.load_gligen(data) |
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if model_management.should_use_fp16(): |
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model = model.half() |
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return comfy.model_patcher.ModelPatcher(model, load_device=model_management.get_torch_device(), offload_device=model_management.unet_offload_device()) |
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def load_checkpoint(config_path=None, ckpt_path=None, output_vae=True, output_clip=True, embedding_directory=None, state_dict=None, config=None): |
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if config is None: |
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with open(config_path, 'r') as stream: |
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config = yaml.safe_load(stream) |
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model_config_params = config['model']['params'] |
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clip_config = model_config_params['cond_stage_config'] |
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scale_factor = model_config_params['scale_factor'] |
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vae_config = model_config_params['first_stage_config'] |
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fp16 = False |
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if "unet_config" in model_config_params: |
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if "params" in model_config_params["unet_config"]: |
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unet_config = model_config_params["unet_config"]["params"] |
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if "use_fp16" in unet_config: |
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fp16 = unet_config["use_fp16"] |
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noise_aug_config = None |
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if "noise_aug_config" in model_config_params: |
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noise_aug_config = model_config_params["noise_aug_config"] |
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model_type = model_base.ModelType.EPS |
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if "parameterization" in model_config_params: |
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if model_config_params["parameterization"] == "v": |
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model_type = model_base.ModelType.V_PREDICTION |
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clip = None |
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vae = None |
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class WeightsLoader(torch.nn.Module): |
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pass |
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if state_dict is None: |
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state_dict = comfy.utils.load_torch_file(ckpt_path) |
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class EmptyClass: |
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pass |
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model_config = comfy.supported_models_base.BASE({}) |
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from . import latent_formats |
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model_config.latent_format = latent_formats.SD15(scale_factor=scale_factor) |
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model_config.unet_config = unet_config |
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if config['model']["target"].endswith("ImageEmbeddingConditionedLatentDiffusion"): |
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model = model_base.SD21UNCLIP(model_config, noise_aug_config["params"], model_type=model_type) |
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else: |
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model = model_base.BaseModel(model_config, model_type=model_type) |
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if config['model']["target"].endswith("LatentInpaintDiffusion"): |
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model.set_inpaint() |
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if fp16: |
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model = model.half() |
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offload_device = model_management.unet_offload_device() |
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model = model.to(offload_device) |
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model.load_model_weights(state_dict, "model.diffusion_model.") |
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if output_vae: |
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w = WeightsLoader() |
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vae = VAE(config=vae_config) |
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w.first_stage_model = vae.first_stage_model |
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load_model_weights(w, state_dict) |
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if output_clip: |
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w = WeightsLoader() |
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clip_target = EmptyClass() |
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clip_target.params = clip_config.get("params", {}) |
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if clip_config["target"].endswith("FrozenOpenCLIPEmbedder"): |
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clip_target.clip = sd2_clip.SD2ClipModel |
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clip_target.tokenizer = sd2_clip.SD2Tokenizer |
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elif clip_config["target"].endswith("FrozenCLIPEmbedder"): |
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clip_target.clip = sd1_clip.SD1ClipModel |
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clip_target.tokenizer = sd1_clip.SD1Tokenizer |
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clip = CLIP(clip_target, embedding_directory=embedding_directory) |
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w.cond_stage_model = clip.cond_stage_model |
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load_clip_weights(w, state_dict) |
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return (comfy.model_patcher.ModelPatcher(model, load_device=model_management.get_torch_device(), offload_device=offload_device), clip, vae) |
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def load_checkpoint_guess_config(ckpt_path, output_vae=True, output_clip=True, output_clipvision=False, embedding_directory=None): |
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sd = comfy.utils.load_torch_file(ckpt_path) |
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sd_keys = sd.keys() |
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clip = None |
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clipvision = None |
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vae = None |
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model = None |
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clip_target = None |
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parameters = comfy.utils.calculate_parameters(sd, "model.diffusion_model.") |
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fp16 = model_management.should_use_fp16(model_params=parameters) |
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class WeightsLoader(torch.nn.Module): |
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pass |
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model_config = model_detection.model_config_from_unet(sd, "model.diffusion_model.", fp16) |
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if model_config is None: |
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raise RuntimeError("ERROR: Could not detect model type of: {}".format(ckpt_path)) |
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if model_config.clip_vision_prefix is not None: |
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if output_clipvision: |
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clipvision = clip_vision.load_clipvision_from_sd(sd, model_config.clip_vision_prefix, True) |
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dtype = torch.float32 |
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if fp16: |
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dtype = torch.float16 |
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inital_load_device = model_management.unet_inital_load_device(parameters, dtype) |
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offload_device = model_management.unet_offload_device() |
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model = model_config.get_model(sd, "model.diffusion_model.", device=inital_load_device) |
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model.load_model_weights(sd, "model.diffusion_model.") |
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if output_vae: |
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vae = VAE() |
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w = WeightsLoader() |
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w.first_stage_model = vae.first_stage_model |
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load_model_weights(w, sd) |
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if output_clip: |
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w = WeightsLoader() |
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clip_target = model_config.clip_target() |
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clip = CLIP(clip_target, embedding_directory=embedding_directory) |
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w.cond_stage_model = clip.cond_stage_model |
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sd = model_config.process_clip_state_dict(sd) |
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load_model_weights(w, sd) |
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|
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left_over = sd.keys() |
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if len(left_over) > 0: |
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print("left over keys:", left_over) |
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|
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model_patcher = comfy.model_patcher.ModelPatcher(model, load_device=model_management.get_torch_device(), offload_device=model_management.unet_offload_device(), current_device=inital_load_device) |
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if inital_load_device != torch.device("cpu"): |
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print("loaded straight to GPU") |
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model_management.load_model_gpu(model_patcher) |
|
|
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return (model_patcher, clip, vae, clipvision) |
|
|
|
|
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def load_unet(unet_path): |
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sd = comfy.utils.load_torch_file(unet_path) |
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parameters = comfy.utils.calculate_parameters(sd) |
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fp16 = model_management.should_use_fp16(model_params=parameters) |
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if "input_blocks.0.0.weight" in sd: |
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model_config = model_detection.model_config_from_unet(sd, "", fp16) |
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if model_config is None: |
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raise RuntimeError("ERROR: Could not detect model type of: {}".format(unet_path)) |
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new_sd = sd |
|
|
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else: |
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model_config = model_detection.model_config_from_diffusers_unet(sd, fp16) |
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if model_config is None: |
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print("ERROR UNSUPPORTED UNET", unet_path) |
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return None |
|
|
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diffusers_keys = comfy.utils.unet_to_diffusers(model_config.unet_config) |
|
|
|
new_sd = {} |
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for k in diffusers_keys: |
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if k in sd: |
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new_sd[diffusers_keys[k]] = sd.pop(k) |
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else: |
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print(diffusers_keys[k], k) |
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offload_device = model_management.unet_offload_device() |
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model = model_config.get_model(new_sd, "") |
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model = model.to(offload_device) |
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model.load_model_weights(new_sd, "") |
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return comfy.model_patcher.ModelPatcher(model, load_device=model_management.get_torch_device(), offload_device=offload_device) |
|
|
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def save_checkpoint(output_path, model, clip, vae, metadata=None): |
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model_management.load_models_gpu([model, clip.load_model()]) |
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sd = model.model.state_dict_for_saving(clip.get_sd(), vae.get_sd()) |
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comfy.utils.save_torch_file(sd, output_path, metadata=metadata) |
|
|
