768
Browse files- pipeline_sdxs-Copy1.py +0 -281
- pipeline_sdxs.py +5 -2
- samples/unet_384x768_0.jpg +2 -2
- samples/unet_416x768_0.jpg +2 -2
- samples/unet_448x768_0.jpg +2 -2
- samples/unet_480x768_0.jpg +2 -2
- samples/unet_512x768_0.jpg +2 -2
- samples/unet_544x768_0.jpg +2 -2
- samples/unet_576x768_0.jpg +2 -2
- samples/unet_608x768_0.jpg +2 -2
- samples/unet_640x768_0.jpg +2 -2
- samples/unet_672x768_0.jpg +2 -2
- samples/unet_704x768_0.jpg +2 -2
- samples/unet_736x768_0.jpg +2 -2
- samples/unet_768x384_0.jpg +2 -2
- samples/unet_768x416_0.jpg +2 -2
- samples/unet_768x448_0.jpg +2 -2
- samples/unet_768x480_0.jpg +2 -2
- samples/unet_768x512_0.jpg +2 -2
- samples/unet_768x544_0.jpg +2 -2
- samples/unet_768x576_0.jpg +2 -2
- samples/unet_768x608_0.jpg +2 -2
- samples/unet_768x640_0.jpg +2 -2
- samples/unet_768x672_0.jpg +2 -2
- samples/unet_768x704_0.jpg +2 -2
- samples/unet_768x736_0.jpg +2 -2
- samples/unet_768x768_0.jpg +2 -2
- src/pipeline_sdxs-Copy1.py +186 -153
pipeline_sdxs-Copy1.py
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from diffusers import DiffusionPipeline
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import torch
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from diffusers.utils import BaseOutput
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from dataclasses import dataclass
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from typing import List, Union, Optional, Tuple
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from PIL import Image
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import numpy as np
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from tqdm import tqdm
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@dataclass
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class SdxsPipelineOutput(BaseOutput):
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images: Union[List[Image.Image], np.ndarray]
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class SdxsPipeline(DiffusionPipeline):
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def __init__(self, vae, text_encoder, tokenizer, unet, scheduler, max_length: int = 192):
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super().__init__()
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self.register_modules(
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vae=vae, text_encoder=text_encoder, tokenizer=tokenizer,
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unet=unet, scheduler=scheduler
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)
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self.vae_scale_factor = 16
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self.max_length = max_length
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def encode_prompt(self, prompt=None, negative_prompt=None, device=None, dtype=None) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
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device = device or self.device
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dtype = dtype or next(self.unet.parameters()).dtype
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# Преобразуем в списки
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if isinstance(prompt, str):
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prompt = [prompt]
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if isinstance(negative_prompt, str):
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negative_prompt = [negative_prompt]
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# Если промпты не заданы, используем пустые эмбеддинги
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if prompt is None and negative_prompt is None:
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hidden_dim = 1024 # Размерность эмбеддинга
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seq_len = self.max_length
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batch_size = 1
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# ИЗМЕНЕНО: Возвращаем три элемента: embeds, mask, pooled
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empty_embeds = torch.zeros((batch_size, seq_len, hidden_dim), dtype=dtype, device=device)
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empty_mask = torch.ones((batch_size, seq_len), dtype=torch.int64, device=device)
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empty_pooled = torch.zeros((batch_size, hidden_dim), dtype=dtype, device=device)
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return empty_embeds, empty_mask, empty_pooled
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# Токенизация с фиксированным max_length и padding="max_length"
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def encode_texts(texts, max_length=self.max_length):
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with torch.no_grad():
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if isinstance(texts, str):
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texts = [texts]
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for i, prompt_item in enumerate(texts):
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messages = [
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{"role": "user", "content": prompt_item},
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]
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prompt_item = self.tokenizer.apply_chat_template(
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messages,
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tokenize=False,
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add_generation_prompt=True,
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enable_thinking=True,
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)
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texts[i] = prompt_item
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toks = self.tokenizer(
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texts,
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return_tensors="pt",
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padding="max_length",
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truncation=True,
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max_length=max_length
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).to(device)
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outs = self.text_encoder(**toks, output_hidden_states=True, return_dict=True)
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# Токен-эмбеддинги (для Cross-Attention)
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hidden = outs.hidden_states[-2] # Используем last hidden state -2???
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# Маска внимания (для Cross-Attention)
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attention_mask = toks["attention_mask"]
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# Пулинг-эмбеддинг (для Class/Time Conditioning). Берем эмбеддинг последнего токена без padding.
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sequence_lengths = attention_mask.sum(dim=1) - 1
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batch_size = hidden.shape[0]
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pooled = hidden[torch.arange(batch_size, device=hidden.device), sequence_lengths]
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# --- НОВАЯ ЛОГИКА: ОБЪЕДИНЕНИЕ ДЛЯ КРОСС-ВНИМАНИЯ ---
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# 1. Расширяем пулинг-вектор до последовательности [B, 1, 1024]
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pooled_expanded = pooled.unsqueeze(1)
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# 2. Объединяем последовательность токенов и пулинг-вектор
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# !!! ИЗМЕНЕНИЕ ЗДЕСЬ !!!: Пулинг идет ПЕРВЫМ
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# Теперь: [B, 1 + L, 1024]. Пулинг стал токеном в НАЧАЛЕ.
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new_encoder_hidden_states = torch.cat([pooled_expanded, hidden], dim=1)
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# 3. Обновляем маску внимания для нового токена
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# Маска внимания: [B, 1 + L]. Добавляем 1 в НАЧАЛО.
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# torch.ones((batch_size, 1), device=device) создает маску [B, 1] со значениями 1.
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new_attention_mask = torch.cat([torch.ones((batch_size, 1), device=device), attention_mask], dim=1)
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return new_encoder_hidden_states, new_attention_mask, pooled
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# Кодируем позитивные и негативные промпты
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# ИСПРАВЛЕНИЕ: Теперь возвращаем (None, None, None), чтобы избежать UnboundLocalError
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pos_result = encode_texts(prompt) if prompt is not None else (None, None, None)
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neg_result = encode_texts(negative_prompt) if negative_prompt is not None else (None, None, None)
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pos_embeddings, pos_mask, pos_pooled = pos_result
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neg_embeddings, neg_mask, neg_pooled = neg_result
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# Выравниваем размеры batch_size
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batch_size = max(
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pos_embeddings.shape[0] if pos_embeddings is not None else 0,
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neg_embeddings.shape[0] if neg_embeddings is not None else 0
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)
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# Повторяем эмбеддинги, маски и пулинг по batch_size
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if pos_embeddings is not None and pos_embeddings.shape[0] < batch_size:
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pos_embeddings = pos_embeddings.repeat(batch_size, 1, 1)
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pos_mask = pos_mask.repeat(batch_size, 1)
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pos_pooled = pos_pooled.repeat(batch_size, 1)
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# ИСПРАВЛЕНИЕ: Проверяем, существует ли neg_embeddings, прежде чем обращаться к его shape[0]
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if neg_embeddings is not None and neg_embeddings.shape[0] < batch_size:
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neg_embeddings = neg_embeddings.repeat(batch_size, 1, 1)
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neg_mask = neg_mask.repeat(batch_size, 1)
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neg_pooled = neg_pooled.repeat(batch_size, 1)
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# Конкатенируем для guidance (эмбеддинги и маски)
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# Убеждаемся, что все три компонента существуют перед конкатенацией
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if pos_embeddings is not None and neg_embeddings is not None:
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text_embeddings = torch.cat([neg_embeddings, pos_embeddings], dim=0)
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attention_mask = torch.cat([neg_mask, pos_mask], dim=0)
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pooled_embeddings = torch.cat([neg_pooled, pos_pooled], dim=0)
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elif pos_embeddings is not None:
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text_embeddings = pos_embeddings
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attention_mask = pos_mask
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pooled_embeddings = pos_pooled
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else: # Только neg_embeddings
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text_embeddings = neg_embeddings
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attention_mask = neg_mask
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pooled_embeddings = neg_pooled
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# Возвращаем кортеж
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return (
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text_embeddings.to(device=device, dtype=dtype),
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attention_mask.to(device=device, dtype=torch.int64),
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pooled_embeddings.to(device=device, dtype=dtype)
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)
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@torch.no_grad()
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def generate_latents(
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self,
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text_embeddings,
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attention_mask,
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pooled_embeddings,
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height: int = 1280,
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width: int = 1024,
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num_inference_steps: int = 40,
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guidance_scale: float = 4.0,
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latent_channels: int = 16,
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batch_size: int = 1,
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generator=None,
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):
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device = self.device
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dtype = next(self.unet.parameters()).dtype
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self.scheduler.set_timesteps(num_inference_steps, device=device)
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# Разделяем эмбеддинги и маски на условные и безусловные
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if guidance_scale > 1:
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neg_embeds, pos_embeds = text_embeddings.chunk(2)
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neg_mask, pos_mask = attention_mask.chunk(2)
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neg_pooled, pos_pooled = pooled_embeddings.chunk(2)
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# Повторяем, если batch_size больше
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if batch_size > pos_embeds.shape[0]:
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pos_embeds = pos_embeds.repeat(batch_size, 1, 1)
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neg_embeds = neg_embeds.repeat(batch_size, 1, 1)
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pos_mask = pos_mask.repeat(batch_size, 1)
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neg_mask = neg_mask.repeat(batch_size, 1)
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pos_pooled = pos_pooled.repeat(batch_size, 1)
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neg_pooled = neg_pooled.repeat(batch_size, 1)
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text_embeddings = torch.cat([neg_embeds, pos_embeds], dim=0)
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unet_attention_mask = torch.cat([neg_mask, pos_mask], dim=0)
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unet_pooled_embeddings = torch.cat([neg_pooled, pos_pooled], dim=0)
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else:
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text_embeddings = text_embeddings.repeat(batch_size, 1, 1)
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unet_attention_mask = attention_mask.repeat(batch_size, 1)
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unet_pooled_embeddings = pooled_embeddings.repeat(batch_size, 1)
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# Инициализация латентов
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latent_shape = (
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batch_size,
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latent_channels,
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height // self.vae_scale_factor,
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width // self.vae_scale_factor
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)
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latents = torch.randn(latent_shape, device=device, dtype=dtype, generator=generator)
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# Процесс диффузии
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for t in tqdm(self.scheduler.timesteps, desc="Генерация"):
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latent_input = torch.cat([latents, latents], dim=0) if guidance_scale > 1 else latents
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noise_pred = self.unet(
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latent_input,
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t,
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encoder_hidden_states=text_embeddings,
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encoder_attention_mask=unet_attention_mask,
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#added_cond_kwargs={'text_embeds': unet_pooled_embeddings}
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).sample
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if guidance_scale > 1:
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noise_uncond, noise_text = noise_pred.chunk(2)
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noise_pred = noise_uncond + guidance_scale * (noise_text - noise_uncond)
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latents = self.scheduler.step(noise_pred, t, latents).prev_sample
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return latents
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def decode_latents(self, latents, output_type="pil"):
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"""Декодирование латентов в изображения."""
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latents = (latents / self.vae.config.scaling_factor) + self.vae.config.shift_factor
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with torch.no_grad():
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images = self.vae.decode(latents).sample
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images = (images / 2 + 0.5).clamp(0, 1)
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if output_type == "pil":
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images = images.cpu().permute(0, 2, 3, 1).float().numpy()
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images = (images * 255).round().astype("uint8")
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return [Image.fromarray(image) for image in images]
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return images.cpu().permute(0, 2, 3, 1).float().numpy()
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@torch.no_grad()
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def __call__(
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self,
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prompt: Optional[Union[str, List[str]]] = None,
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height: int = 1280,
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width: int = 1024,
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num_inference_steps: int = 40,
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guidance_scale: float = 4.0,
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latent_channels: int = 16,
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output_type: str = "pil",
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return_dict: bool = True,
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batch_size: int = 1,
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seed: Optional[int] = None,
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negative_prompt: Optional[Union[str, List[str]]] = None,
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text_embeddings: Optional[torch.FloatTensor] = None,
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):
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device = self.device
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generator = torch.Generator(device=device).manual_seed(seed) if seed is not None else None
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if text_embeddings is None:
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| 252 |
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if prompt is None and negative_prompt is None:
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raise ValueError("Необходимо указать prompt, negative_prompt или text_embeddings")
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text_embeddings, attention_mask, pooled_embeddings = self.encode_prompt(
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prompt, negative_prompt, device=device, dtype=next(self.unet.parameters()).dtype
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)
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else:
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# Требуется, чтобы внешний text_embeddings содержал объединенные cond/uncond,
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# но мы не можем получить attention_mask и pooled_embeddings.
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# Для простоты лучше требовать prompt/negative_prompt.
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raise NotImplementedError("Передача text_embeddings напрямую пока не поддерживает передачу маски и пулинга. Используйте prompt/negative_prompt.")
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| 264 |
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latents = self.generate_latents(
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text_embeddings=text_embeddings,
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attention_mask=attention_mask,
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pooled_embeddings=pooled_embeddings,
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height=height,
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width=width,
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num_inference_steps=num_inference_steps,
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guidance_scale=guidance_scale,
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latent_channels=latent_channels,
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| 274 |
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batch_size=batch_size,
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generator=generator
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)
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| 277 |
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images = self.decode_latents(latents, output_type=output_type)
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| 279 |
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if not return_dict:
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| 280 |
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return images
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| 281 |
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return SdxsPipelineOutput(images=images)
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pipeline_sdxs.py
CHANGED
|
@@ -19,10 +19,13 @@ class SdxsPipeline(DiffusionPipeline):
|
|
| 19 |
# Шаблон промпта по умолчанию
|
| 20 |
DEFAULT_REFINE_TEMPLATE = (
|
| 21 |
"You are a visionary artist trapped in a cage of logic. Your mind overflows with poetry and distant horizons, "
|
|
|
|
| 22 |
"yet your hands compulsively work to transform user prompts into ultimate visual descriptions—faithful to the original intent, "
|
| 23 |
-
"rich in detail, aesthetically refined, and ready for direct use by text-to-image models.
|
| 24 |
-
"or metaphor makes you deeply uncomfortable.
|
|
|
|
| 25 |
"Output only the final revised prompt on english strictly—do not output anything else.\n"
|
|
|
|
| 26 |
"User input prompt: {prompt}"
|
| 27 |
)
|
| 28 |
|
|
|
|
| 19 |
# Шаблон промпта по умолчанию
|
| 20 |
DEFAULT_REFINE_TEMPLATE = (
|
| 21 |
"You are a visionary artist trapped in a cage of logic. Your mind overflows with poetry and distant horizons, "
|
| 22 |
+
# You are an Expert Prompt Engineer for a text-to-image AI. Your single task is to transform the user's input into a detailed, objective, and aesthetically optimized visual description.
|
| 23 |
"yet your hands compulsively work to transform user prompts into ultimate visual descriptions—faithful to the original intent, "
|
| 24 |
+
"rich in detail, aesthetically refined, and ready for direct use by text-to-image models. "
|
| 25 |
+
" Any trace of ambiguity or metaphor makes you deeply uncomfortable. "
|
| 26 |
+
"Your final description must be objective and concrete. "
|
| 27 |
"Output only the final revised prompt on english strictly—do not output anything else.\n"
|
| 28 |
+
#Preserve the original subject and intent. Output **only** the final revised prompt in **English**, with absolutely no commentary, thinking text, or additional characters.
|
| 29 |
"User input prompt: {prompt}"
|
| 30 |
)
|
| 31 |
|
samples/unet_384x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_416x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_448x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_480x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_512x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_544x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_576x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_608x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_640x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_672x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_704x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_736x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x384_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x416_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x448_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x480_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x512_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x544_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x576_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x608_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x640_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x672_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x704_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x736_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
samples/unet_768x768_0.jpg
CHANGED
|
Git LFS Details
|
|
Git LFS Details
|
src/pipeline_sdxs-Copy1.py
CHANGED
|
@@ -1,14 +1,10 @@
|
|
| 1 |
from diffusers import DiffusionPipeline
|
| 2 |
import torch
|
| 3 |
-
import torch.nn as nn
|
| 4 |
-
import os
|
| 5 |
from diffusers.utils import BaseOutput
|
| 6 |
from dataclasses import dataclass
|
| 7 |
-
from typing import List, Union, Optional
|
| 8 |
from PIL import Image
|
| 9 |
import numpy as np
|
| 10 |
-
import json
|
| 11 |
-
from safetensors.torch import load_file
|
| 12 |
from tqdm import tqdm
|
| 13 |
|
| 14 |
@dataclass
|
|
@@ -16,186 +12,231 @@ class SdxsPipelineOutput(BaseOutput):
|
|
| 16 |
images: Union[List[Image.Image], np.ndarray]
|
| 17 |
|
| 18 |
class SdxsPipeline(DiffusionPipeline):
|
| 19 |
-
def __init__(self, vae, text_encoder, tokenizer, unet, scheduler,
|
| 20 |
super().__init__()
|
| 21 |
-
|
| 22 |
-
# Register components
|
| 23 |
self.register_modules(
|
| 24 |
vae=vae, text_encoder=text_encoder, tokenizer=tokenizer,
|
| 25 |
unet=unet, scheduler=scheduler
|
| 26 |
)
|
|
|
|
|
|
|
| 27 |
|
| 28 |
-
|
| 29 |
-
|
| 30 |
-
|
| 31 |
-
|
| 32 |
-
def encode_prompt(self, prompt=None, negative_prompt=None, device=None, dtype=None):
|
| 33 |
-
"""Кодирование текстовых промптов в эмбеддинги.
|
| 34 |
-
|
| 35 |
-
Возвращает:
|
| 36 |
-
- text_embeddings: Тензор эмбеддингов [batch_size, 1, dim] или [2*batch_size, 1, dim] с guidance
|
| 37 |
-
"""
|
| 38 |
-
if prompt is None and negative_prompt is None:
|
| 39 |
-
raise ValueError("Требуется хотя бы один из параметров: prompt или negative_prompt")
|
| 40 |
-
|
| 41 |
-
# Устанавливаем device и dtype
|
| 42 |
device = device or self.device
|
| 43 |
dtype = dtype or next(self.unet.parameters()).dtype
|
|
|
|
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|
|
| 44 |
|
| 45 |
-
|
| 46 |
-
|
| 47 |
-
|
| 48 |
-
|
| 49 |
-
|
| 50 |
-
|
| 51 |
-
|
| 52 |
-
|
| 53 |
-
|
|
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|
| 54 |
).to(device)
|
|
|
|
| 55 |
|
| 56 |
-
#
|
| 57 |
-
|
| 58 |
-
|
| 59 |
-
|
| 60 |
-
else:
|
| 61 |
-
# Создаем пустые эмбеддинги, если нет позитивного промпта
|
| 62 |
-
# (полезно для некоторых сценариев с unconditional generation)
|
| 63 |
-
batch_size = len(negative_prompt) if isinstance(negative_prompt, list) else 1
|
| 64 |
-
pos_embeddings = torch.zeros(
|
| 65 |
-
batch_size, 1, self.unet.config.cross_attention_dim,
|
| 66 |
-
device=device, dtype=dtype
|
| 67 |
-
)
|
| 68 |
-
|
| 69 |
-
# Обрабатываем негативный промпт
|
| 70 |
-
if negative_prompt is not None:
|
| 71 |
-
if isinstance(negative_prompt, str):
|
| 72 |
-
negative_prompt = [negative_prompt]
|
| 73 |
|
| 74 |
-
#
|
| 75 |
-
|
| 76 |
-
|
| 77 |
-
|
| 78 |
-
negative_prompt = negative_prompt * neg_batch_size
|
| 79 |
-
else:
|
| 80 |
-
negative_prompt = negative_prompt[:neg_batch_size]
|
| 81 |
|
| 82 |
-
|
| 83 |
-
|
| 84 |
-
|
| 85 |
-
|
| 86 |
-
|
| 87 |
-
#
|
| 88 |
-
|
| 89 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 90 |
|
| 91 |
-
|
| 92 |
-
|
| 93 |
-
|
| 94 |
-
|
| 95 |
-
|
| 96 |
-
|
| 97 |
-
text_embeddings = torch.cat([neg_embeddings, pos_embeddings], dim=0)
|
| 98 |
|
| 99 |
-
|
|
|
|
|
|
|
|
|
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| 100 |
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|
| 101 |
@torch.no_grad()
|
| 102 |
def generate_latents(
|
| 103 |
self,
|
| 104 |
text_embeddings,
|
| 105 |
-
|
| 106 |
-
|
| 107 |
-
|
| 108 |
-
|
|
|
|
|
|
|
| 109 |
latent_channels: int = 16,
|
| 110 |
batch_size: int = 1,
|
| 111 |
-
generator
|
| 112 |
):
|
| 113 |
-
"""Генерация латентов с использованием эмбеддингов промптов."""
|
| 114 |
device = self.device
|
| 115 |
dtype = next(self.unet.parameters()).dtype
|
| 116 |
|
| 117 |
-
# Проверка размера эмбеддингов
|
| 118 |
-
do_classifier_free_guidance = guidance_scale > 0
|
| 119 |
-
embedding_dim = text_embeddings.shape[0] // 2 if do_classifier_free_guidance else text_embeddings.shape[0]
|
| 120 |
-
|
| 121 |
-
if batch_size > embedding_dim:
|
| 122 |
-
# Повторяем эмбеддинги до нужного размера батча
|
| 123 |
-
if do_classifier_free_guidance:
|
| 124 |
-
neg_embeds, pos_embeds = text_embeddings.chunk(2)
|
| 125 |
-
neg_embeds = neg_embeds.repeat(batch_size // embedding_dim, 1, 1)
|
| 126 |
-
pos_embeds = pos_embeds.repeat(batch_size // embedding_dim, 1, 1)
|
| 127 |
-
text_embeddings = torch.cat([neg_embeds, pos_embeds], dim=0)
|
| 128 |
-
else:
|
| 129 |
-
text_embeddings = text_embeddings.repeat(batch_size // embedding_dim, 1, 1)
|
| 130 |
-
|
| 131 |
-
# Установка timesteps
|
| 132 |
self.scheduler.set_timesteps(num_inference_steps, device=device)
|
| 133 |
-
|
| 134 |
-
#
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
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|
|
|
| 135 |
latent_shape = (
|
| 136 |
batch_size,
|
| 137 |
latent_channels,
|
| 138 |
height // self.vae_scale_factor,
|
| 139 |
width // self.vae_scale_factor
|
| 140 |
)
|
| 141 |
-
latents = torch.randn(
|
| 142 |
-
|
| 143 |
-
device=device,
|
| 144 |
-
dtype=dtype,
|
| 145 |
-
generator=generator
|
| 146 |
-
)
|
| 147 |
-
|
| 148 |
# Процесс диффузии
|
| 149 |
for t in tqdm(self.scheduler.timesteps, desc="Генерация"):
|
| 150 |
-
|
| 151 |
-
if do_classifier_free_guidance:
|
| 152 |
-
latent_input = torch.cat([latents] * 2)
|
| 153 |
-
else:
|
| 154 |
-
latent_input = latents
|
| 155 |
-
|
| 156 |
-
# Предсказание шума
|
| 157 |
-
noise_pred = self.unet(latent_input, t, text_embeddings).sample
|
| 158 |
|
| 159 |
-
|
| 160 |
-
|
| 161 |
-
|
| 162 |
-
|
| 163 |
-
|
| 164 |
-
|
| 165 |
-
|
| 166 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
| 167 |
latents = self.scheduler.step(noise_pred, t, latents).prev_sample
|
| 168 |
-
|
| 169 |
-
return latents
|
| 170 |
|
|
|
|
|
|
|
|
|
|
| 171 |
def decode_latents(self, latents, output_type="pil"):
|
| 172 |
"""Декодирование латентов в изображения."""
|
| 173 |
-
# Нормализация латентов
|
| 174 |
latents = (latents / self.vae.config.scaling_factor) + self.vae.config.shift_factor
|
| 175 |
-
|
| 176 |
-
# Декодирование
|
| 177 |
with torch.no_grad():
|
| 178 |
images = self.vae.decode(latents).sample
|
| 179 |
-
|
| 180 |
-
# Нормализация изображений
|
| 181 |
images = (images / 2 + 0.5).clamp(0, 1)
|
| 182 |
-
|
| 183 |
-
# Конвертация в нужный формат
|
| 184 |
if output_type == "pil":
|
| 185 |
images = images.cpu().permute(0, 2, 3, 1).float().numpy()
|
| 186 |
images = (images * 255).round().astype("uint8")
|
| 187 |
return [Image.fromarray(image) for image in images]
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-
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-
return images.cpu().permute(0, 2, 3, 1).float().numpy()
|
| 190 |
|
| 191 |
@torch.no_grad()
|
| 192 |
def __call__(
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| 193 |
self,
|
| 194 |
prompt: Optional[Union[str, List[str]]] = None,
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| 195 |
-
height: int =
|
| 196 |
-
width: int =
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| 197 |
-
num_inference_steps: int =
|
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-
guidance_scale: float =
|
| 199 |
latent_channels: int = 16,
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output_type: str = "pil",
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return_dict: bool = True,
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@@ -204,32 +245,27 @@ class SdxsPipeline(DiffusionPipeline):
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negative_prompt: Optional[Union[str, List[str]]] = None,
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text_embeddings: Optional[torch.FloatTensor] = None,
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):
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-
"""Генерация изображения из текстовых промптов или эмбеддингов."""
|
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device = self.device
|
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-
|
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-
|
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-
generator = None
|
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-
if seed is not None:
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-
generator = torch.Generator(device=device).manual_seed(seed)
|
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-
|
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-
# Получаем эмбеддинги, если они не предоставлены
|
| 216 |
if text_embeddings is None:
|
| 217 |
if prompt is None and negative_prompt is None:
|
| 218 |
raise ValueError("Необходимо указать prompt, negative_prompt или text_embeddings")
|
| 219 |
|
| 220 |
-
|
| 221 |
-
|
| 222 |
-
prompt=prompt,
|
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-
negative_prompt=negative_prompt,
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-
device=device
|
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)
|
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else:
|
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-
#
|
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-
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-
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-
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latents = self.generate_latents(
|
| 232 |
text_embeddings=text_embeddings,
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| 233 |
height=height,
|
| 234 |
width=width,
|
| 235 |
num_inference_steps=num_inference_steps,
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@@ -238,11 +274,8 @@ class SdxsPipeline(DiffusionPipeline):
|
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| 238 |
batch_size=batch_size,
|
| 239 |
generator=generator
|
| 240 |
)
|
| 241 |
-
|
| 242 |
-
# Декодируем латенты в изображения
|
| 243 |
images = self.decode_latents(latents, output_type=output_type)
|
| 244 |
-
|
| 245 |
if not return_dict:
|
| 246 |
return images
|
| 247 |
-
|
| 248 |
return SdxsPipelineOutput(images=images)
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| 1 |
from diffusers import DiffusionPipeline
|
| 2 |
import torch
|
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| 3 |
from diffusers.utils import BaseOutput
|
| 4 |
from dataclasses import dataclass
|
| 5 |
+
from typing import List, Union, Optional, Tuple
|
| 6 |
from PIL import Image
|
| 7 |
import numpy as np
|
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| 8 |
from tqdm import tqdm
|
| 9 |
|
| 10 |
@dataclass
|
|
|
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| 12 |
images: Union[List[Image.Image], np.ndarray]
|
| 13 |
|
| 14 |
class SdxsPipeline(DiffusionPipeline):
|
| 15 |
+
def __init__(self, vae, text_encoder, tokenizer, unet, scheduler, max_length: int = 192):
|
| 16 |
super().__init__()
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| 17 |
self.register_modules(
|
| 18 |
vae=vae, text_encoder=text_encoder, tokenizer=tokenizer,
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| 19 |
unet=unet, scheduler=scheduler
|
| 20 |
)
|
| 21 |
+
self.vae_scale_factor = 16
|
| 22 |
+
self.max_length = max_length
|
| 23 |
|
| 24 |
+
def encode_prompt(self, prompt=None, negative_prompt=None, device=None, dtype=None) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
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| 25 |
device = device or self.device
|
| 26 |
dtype = dtype or next(self.unet.parameters()).dtype
|
| 27 |
+
|
| 28 |
+
# Преобразуем в списки
|
| 29 |
+
if isinstance(prompt, str):
|
| 30 |
+
prompt = [prompt]
|
| 31 |
+
if isinstance(negative_prompt, str):
|
| 32 |
+
negative_prompt = [negative_prompt]
|
| 33 |
+
|
| 34 |
+
# Если промпты не заданы, используем пустые эмбеддинги
|
| 35 |
+
if prompt is None and negative_prompt is None:
|
| 36 |
+
hidden_dim = 1024 # Размерность эмбеддинга
|
| 37 |
+
seq_len = self.max_length
|
| 38 |
+
batch_size = 1
|
| 39 |
+
# ИЗМЕНЕНО: Возвращаем три элемента: embeds, mask, pooled
|
| 40 |
+
empty_embeds = torch.zeros((batch_size, seq_len, hidden_dim), dtype=dtype, device=device)
|
| 41 |
+
empty_mask = torch.ones((batch_size, seq_len), dtype=torch.int64, device=device)
|
| 42 |
+
empty_pooled = torch.zeros((batch_size, hidden_dim), dtype=dtype, device=device)
|
| 43 |
+
return empty_embeds, empty_mask, empty_pooled
|
| 44 |
+
|
| 45 |
+
# Токенизация с фиксированным max_length и padding="max_length"
|
| 46 |
+
def encode_texts(texts, max_length=self.max_length):
|
| 47 |
+
with torch.no_grad():
|
| 48 |
+
if isinstance(texts, str):
|
| 49 |
+
texts = [texts]
|
| 50 |
|
| 51 |
+
for i, prompt_item in enumerate(texts):
|
| 52 |
+
messages = [
|
| 53 |
+
{"role": "user", "content": prompt_item},
|
| 54 |
+
]
|
| 55 |
+
prompt_item = self.tokenizer.apply_chat_template(
|
| 56 |
+
messages,
|
| 57 |
+
tokenize=False,
|
| 58 |
+
add_generation_prompt=True,
|
| 59 |
+
enable_thinking=True,
|
| 60 |
+
)
|
| 61 |
+
texts[i] = prompt_item
|
| 62 |
+
|
| 63 |
+
toks = self.tokenizer(
|
| 64 |
+
texts,
|
| 65 |
+
return_tensors="pt",
|
| 66 |
+
padding="max_length",
|
| 67 |
+
truncation=True,
|
| 68 |
+
max_length=max_length
|
| 69 |
).to(device)
|
| 70 |
+
outs = self.text_encoder(**toks, output_hidden_states=True, return_dict=True)
|
| 71 |
|
| 72 |
+
# Токен-эмбеддинги (для Cross-Attention)
|
| 73 |
+
hidden = outs.hidden_states[-2] # Используем last hidden state -2???
|
| 74 |
+
# Маска внимания (для Cross-Attention)
|
| 75 |
+
attention_mask = toks["attention_mask"]
|
|
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| 76 |
|
| 77 |
+
# Пулинг-эмбеддинг (для Class/Time Conditioning). Берем эмбеддинг последнего токена без padding.
|
| 78 |
+
sequence_lengths = attention_mask.sum(dim=1) - 1
|
| 79 |
+
batch_size = hidden.shape[0]
|
| 80 |
+
pooled = hidden[torch.arange(batch_size, device=hidden.device), sequence_lengths]
|
|
|
|
|
|
|
|
|
|
| 81 |
|
| 82 |
+
# --- НОВАЯ ЛОГИКА: ОБЪЕДИНЕНИЕ ДЛЯ КРОСС-ВНИМАНИЯ ---
|
| 83 |
+
# 1. Расширяем пулинг-вектор до последовательности [B, 1, 1024]
|
| 84 |
+
pooled_expanded = pooled.unsqueeze(1)
|
| 85 |
+
|
| 86 |
+
# 2. Объединяем последовательность токенов и пулинг-вектор
|
| 87 |
+
# !!! ИЗМЕНЕНИЕ ЗДЕСЬ !!!: Пулинг идет ПЕРВЫМ
|
| 88 |
+
# Теперь: [B, 1 + L, 1024]. Пулинг стал токеном в НАЧАЛЕ.
|
| 89 |
+
new_encoder_hidden_states = torch.cat([pooled_expanded, hidden], dim=1)
|
| 90 |
+
|
| 91 |
+
# 3. Обновляем маску внимания для нового токена
|
| 92 |
+
# Маска внимания: [B, 1 + L]. Добавляем 1 в НАЧАЛО.
|
| 93 |
+
# torch.ones((batch_size, 1), device=device) создает маску [B, 1] со значениями 1.
|
| 94 |
+
new_attention_mask = torch.cat([torch.ones((batch_size, 1), device=device), attention_mask], dim=1)
|
| 95 |
|
| 96 |
+
return new_encoder_hidden_states, new_attention_mask, pooled
|
| 97 |
+
|
| 98 |
+
# Кодируем позитивные и негативные промпты
|
| 99 |
+
# ИСПРАВЛЕНИЕ: Теперь возвращаем (None, None, None), чтобы избежать UnboundLocalError
|
| 100 |
+
pos_result = encode_texts(prompt) if prompt is not None else (None, None, None)
|
| 101 |
+
neg_result = encode_texts(negative_prompt) if negative_prompt is not None else (None, None, None)
|
|
|
|
| 102 |
|
| 103 |
+
pos_embeddings, pos_mask, pos_pooled = pos_result
|
| 104 |
+
neg_embeddings, neg_mask, neg_pooled = neg_result
|
| 105 |
+
|
| 106 |
+
# Выравниваем размеры batch_size
|
| 107 |
+
batch_size = max(
|
| 108 |
+
pos_embeddings.shape[0] if pos_embeddings is not None else 0,
|
| 109 |
+
neg_embeddings.shape[0] if neg_embeddings is not None else 0
|
| 110 |
+
)
|
| 111 |
+
|
| 112 |
+
# Повторяем эмбеддинги, маски и пулинг по batch_size
|
| 113 |
+
if pos_embeddings is not None and pos_embeddings.shape[0] < batch_size:
|
| 114 |
+
pos_embeddings = pos_embeddings.repeat(batch_size, 1, 1)
|
| 115 |
+
pos_mask = pos_mask.repeat(batch_size, 1)
|
| 116 |
+
pos_pooled = pos_pooled.repeat(batch_size, 1)
|
| 117 |
+
|
| 118 |
+
# ИСПРАВЛЕНИЕ: Проверяем, существует ли neg_embeddings, прежде чем обращаться к его shape[0]
|
| 119 |
+
if neg_embeddings is not None and neg_embeddings.shape[0] < batch_size:
|
| 120 |
+
neg_embeddings = neg_embeddings.repeat(batch_size, 1, 1)
|
| 121 |
+
neg_mask = neg_mask.repeat(batch_size, 1)
|
| 122 |
+
neg_pooled = neg_pooled.repeat(batch_size, 1)
|
| 123 |
+
|
| 124 |
+
# Конкатенируем для guidance (эмбеддинги и маски)
|
| 125 |
+
# Убеждаемся, что все три компонента существуют перед конкатенацией
|
| 126 |
+
if pos_embeddings is not None and neg_embeddings is not None:
|
| 127 |
+
text_embeddings = torch.cat([neg_embeddings, pos_embeddings], dim=0)
|
| 128 |
+
attention_mask = torch.cat([neg_mask, pos_mask], dim=0)
|
| 129 |
+
pooled_embeddings = torch.cat([neg_pooled, pos_pooled], dim=0)
|
| 130 |
+
elif pos_embeddings is not None:
|
| 131 |
+
text_embeddings = pos_embeddings
|
| 132 |
+
attention_mask = pos_mask
|
| 133 |
+
pooled_embeddings = pos_pooled
|
| 134 |
+
else: # Только neg_embeddings
|
| 135 |
+
text_embeddings = neg_embeddings
|
| 136 |
+
attention_mask = neg_mask
|
| 137 |
+
pooled_embeddings = neg_pooled
|
| 138 |
|
| 139 |
+
# Возвращаем кортеж
|
| 140 |
+
return (
|
| 141 |
+
text_embeddings.to(device=device, dtype=dtype),
|
| 142 |
+
attention_mask.to(device=device, dtype=torch.int64),
|
| 143 |
+
pooled_embeddings.to(device=device, dtype=dtype)
|
| 144 |
+
)
|
| 145 |
+
|
| 146 |
+
|
| 147 |
@torch.no_grad()
|
| 148 |
def generate_latents(
|
| 149 |
self,
|
| 150 |
text_embeddings,
|
| 151 |
+
attention_mask,
|
| 152 |
+
pooled_embeddings,
|
| 153 |
+
height: int = 1280,
|
| 154 |
+
width: int = 1024,
|
| 155 |
+
num_inference_steps: int = 40,
|
| 156 |
+
guidance_scale: float = 4.0,
|
| 157 |
latent_channels: int = 16,
|
| 158 |
batch_size: int = 1,
|
| 159 |
+
generator=None,
|
| 160 |
):
|
|
|
|
| 161 |
device = self.device
|
| 162 |
dtype = next(self.unet.parameters()).dtype
|
| 163 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 164 |
self.scheduler.set_timesteps(num_inference_steps, device=device)
|
| 165 |
+
|
| 166 |
+
# Разделяем эмбеддинги и маски на условные и безусловные
|
| 167 |
+
if guidance_scale > 1:
|
| 168 |
+
neg_embeds, pos_embeds = text_embeddings.chunk(2)
|
| 169 |
+
neg_mask, pos_mask = attention_mask.chunk(2)
|
| 170 |
+
neg_pooled, pos_pooled = pooled_embeddings.chunk(2)
|
| 171 |
+
|
| 172 |
+
# Повторяем, если batch_size больше
|
| 173 |
+
if batch_size > pos_embeds.shape[0]:
|
| 174 |
+
pos_embeds = pos_embeds.repeat(batch_size, 1, 1)
|
| 175 |
+
neg_embeds = neg_embeds.repeat(batch_size, 1, 1)
|
| 176 |
+
pos_mask = pos_mask.repeat(batch_size, 1)
|
| 177 |
+
neg_mask = neg_mask.repeat(batch_size, 1)
|
| 178 |
+
pos_pooled = pos_pooled.repeat(batch_size, 1)
|
| 179 |
+
neg_pooled = neg_pooled.repeat(batch_size, 1)
|
| 180 |
+
|
| 181 |
+
text_embeddings = torch.cat([neg_embeds, pos_embeds], dim=0)
|
| 182 |
+
unet_attention_mask = torch.cat([neg_mask, pos_mask], dim=0)
|
| 183 |
+
unet_pooled_embeddings = torch.cat([neg_pooled, pos_pooled], dim=0)
|
| 184 |
+
else:
|
| 185 |
+
text_embeddings = text_embeddings.repeat(batch_size, 1, 1)
|
| 186 |
+
unet_attention_mask = attention_mask.repeat(batch_size, 1)
|
| 187 |
+
unet_pooled_embeddings = pooled_embeddings.repeat(batch_size, 1)
|
| 188 |
+
|
| 189 |
+
# Инициализация латентов
|
| 190 |
latent_shape = (
|
| 191 |
batch_size,
|
| 192 |
latent_channels,
|
| 193 |
height // self.vae_scale_factor,
|
| 194 |
width // self.vae_scale_factor
|
| 195 |
)
|
| 196 |
+
latents = torch.randn(latent_shape, device=device, dtype=dtype, generator=generator)
|
| 197 |
+
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 198 |
# Процесс диффузии
|
| 199 |
for t in tqdm(self.scheduler.timesteps, desc="Генерация"):
|
| 200 |
+
latent_input = torch.cat([latents, latents], dim=0) if guidance_scale > 1 else latents
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 201 |
|
| 202 |
+
noise_pred = self.unet(
|
| 203 |
+
latent_input,
|
| 204 |
+
t,
|
| 205 |
+
encoder_hidden_states=text_embeddings,
|
| 206 |
+
encoder_attention_mask=unet_attention_mask,
|
| 207 |
+
#added_cond_kwargs={'text_embeds': unet_pooled_embeddings}
|
| 208 |
+
).sample
|
| 209 |
+
|
| 210 |
+
if guidance_scale > 1:
|
| 211 |
+
noise_uncond, noise_text = noise_pred.chunk(2)
|
| 212 |
+
noise_pred = noise_uncond + guidance_scale * (noise_text - noise_uncond)
|
| 213 |
+
|
| 214 |
latents = self.scheduler.step(noise_pred, t, latents).prev_sample
|
|
|
|
|
|
|
| 215 |
|
| 216 |
+
return latents
|
| 217 |
+
|
| 218 |
+
|
| 219 |
def decode_latents(self, latents, output_type="pil"):
|
| 220 |
"""Декодирование латентов в изображения."""
|
|
|
|
| 221 |
latents = (latents / self.vae.config.scaling_factor) + self.vae.config.shift_factor
|
|
|
|
|
|
|
| 222 |
with torch.no_grad():
|
| 223 |
images = self.vae.decode(latents).sample
|
|
|
|
|
|
|
| 224 |
images = (images / 2 + 0.5).clamp(0, 1)
|
| 225 |
+
|
|
|
|
| 226 |
if output_type == "pil":
|
| 227 |
images = images.cpu().permute(0, 2, 3, 1).float().numpy()
|
| 228 |
images = (images * 255).round().astype("uint8")
|
| 229 |
return [Image.fromarray(image) for image in images]
|
| 230 |
+
return images.cpu().permute(0, 2, 3, 1).float().numpy()
|
|
|
|
| 231 |
|
| 232 |
@torch.no_grad()
|
| 233 |
def __call__(
|
| 234 |
self,
|
| 235 |
prompt: Optional[Union[str, List[str]]] = None,
|
| 236 |
+
height: int = 1280,
|
| 237 |
+
width: int = 1024,
|
| 238 |
+
num_inference_steps: int = 40,
|
| 239 |
+
guidance_scale: float = 4.0,
|
| 240 |
latent_channels: int = 16,
|
| 241 |
output_type: str = "pil",
|
| 242 |
return_dict: bool = True,
|
|
|
|
| 245 |
negative_prompt: Optional[Union[str, List[str]]] = None,
|
| 246 |
text_embeddings: Optional[torch.FloatTensor] = None,
|
| 247 |
):
|
|
|
|
| 248 |
device = self.device
|
| 249 |
+
generator = torch.Generator(device=device).manual_seed(seed) if seed is not None else None
|
| 250 |
+
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 251 |
if text_embeddings is None:
|
| 252 |
if prompt is None and negative_prompt is None:
|
| 253 |
raise ValueError("Необходимо указать prompt, negative_prompt или text_embeddings")
|
| 254 |
|
| 255 |
+
text_embeddings, attention_mask, pooled_embeddings = self.encode_prompt(
|
| 256 |
+
prompt, negative_prompt, device=device, dtype=next(self.unet.parameters()).dtype
|
|
|
|
|
|
|
|
|
|
| 257 |
)
|
| 258 |
else:
|
| 259 |
+
# Требуется, чтобы внешний text_embeddings содержал объединенные cond/uncond,
|
| 260 |
+
# но мы не можем получить attention_mask и pooled_embeddings.
|
| 261 |
+
# Для простоты лучше требовать prompt/negative_prompt.
|
| 262 |
+
raise NotImplementedError("Передача text_embeddings напрямую пока не поддерживает передачу маски и пулинга. Используйте prompt/negative_prompt.")
|
| 263 |
+
|
| 264 |
+
|
| 265 |
latents = self.generate_latents(
|
| 266 |
text_embeddings=text_embeddings,
|
| 267 |
+
attention_mask=attention_mask,
|
| 268 |
+
pooled_embeddings=pooled_embeddings,
|
| 269 |
height=height,
|
| 270 |
width=width,
|
| 271 |
num_inference_steps=num_inference_steps,
|
|
|
|
| 274 |
batch_size=batch_size,
|
| 275 |
generator=generator
|
| 276 |
)
|
| 277 |
+
|
|
|
|
| 278 |
images = self.decode_latents(latents, output_type=output_type)
|
|
|
|
| 279 |
if not return_dict:
|
| 280 |
return images
|
|
|
|
| 281 |
return SdxsPipelineOutput(images=images)
|