import torch from torch.nn.functional import silu import modules.textual_inversion.textual_inversion from modules import devices, sd_hijack_optimizations, shared, sd_hijack_checkpoint from modules.hypernetworks import hypernetwork from modules.shared import cmd_opts from modules import sd_hijack_clip, sd_hijack_open_clip, sd_hijack_unet, sd_hijack_xlmr, xlmr import ldm.modules.attention import ldm.modules.diffusionmodules.model import ldm.modules.diffusionmodules.openaimodel import ldm.models.diffusion.ddim import ldm.models.diffusion.plms import ldm.modules.encoders.modules attention_CrossAttention_forward = ldm.modules.attention.CrossAttention.forward diffusionmodules_model_nonlinearity = ldm.modules.diffusionmodules.model.nonlinearity diffusionmodules_model_AttnBlock_forward = ldm.modules.diffusionmodules.model.AttnBlock.forward # new memory efficient cross attention blocks do not support hypernets and we already # have memory efficient cross attention anyway, so this disables SD2.0's memory efficient cross attention ldm.modules.attention.MemoryEfficientCrossAttention = ldm.modules.attention.CrossAttention ldm.modules.attention.BasicTransformerBlock.ATTENTION_MODES["softmax-xformers"] = ldm.modules.attention.CrossAttention # silence new console spam from SD2 ldm.modules.attention.print = lambda *args: None ldm.modules.diffusionmodules.model.print = lambda *args: None def apply_optimizations(): undo_optimizations() ldm.modules.diffusionmodules.model.nonlinearity = silu ldm.modules.diffusionmodules.openaimodel.th = sd_hijack_unet.th optimization_method = None if cmd_opts.force_enable_xformers or (cmd_opts.xformers and shared.xformers_available and torch.version.cuda and (6, 0) <= torch.cuda.get_device_capability(shared.device) <= (9, 0)): print("Applying xformers cross attention optimization.") ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.xformers_attention_forward ldm.modules.diffusionmodules.model.AttnBlock.forward = sd_hijack_optimizations.xformers_attnblock_forward optimization_method = 'xformers' elif cmd_opts.opt_sub_quad_attention: print("Applying sub-quadratic cross attention optimization.") ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.sub_quad_attention_forward ldm.modules.diffusionmodules.model.AttnBlock.forward = sd_hijack_optimizations.sub_quad_attnblock_forward optimization_method = 'sub-quadratic' elif cmd_opts.opt_split_attention_v1: print("Applying v1 cross attention optimization.") ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward_v1 optimization_method = 'V1' elif not cmd_opts.disable_opt_split_attention and (cmd_opts.opt_split_attention_invokeai or not cmd_opts.opt_split_attention and not torch.cuda.is_available()): print("Applying cross attention optimization (InvokeAI).") ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward_invokeAI optimization_method = 'InvokeAI' elif not cmd_opts.disable_opt_split_attention and (cmd_opts.opt_split_attention or torch.cuda.is_available()): print("Applying cross attention optimization (Doggettx).") ldm.modules.attention.CrossAttention.forward = sd_hijack_optimizations.split_cross_attention_forward ldm.modules.diffusionmodules.model.AttnBlock.forward = sd_hijack_optimizations.cross_attention_attnblock_forward optimization_method = 'Doggettx' return optimization_method def undo_optimizations(): ldm.modules.attention.CrossAttention.forward = hypernetwork.attention_CrossAttention_forward ldm.modules.diffusionmodules.model.nonlinearity = diffusionmodules_model_nonlinearity ldm.modules.diffusionmodules.model.AttnBlock.forward = diffusionmodules_model_AttnBlock_forward def fix_checkpoint(): """checkpoints are now added and removed in embedding/hypernet code, since torch doesn't want checkpoints to be added when not training (there's a warning)""" pass class StableDiffusionModelHijack: fixes = None comments = [] layers = None circular_enabled = False clip = None optimization_method = None embedding_db = modules.textual_inversion.textual_inversion.EmbeddingDatabase() def __init__(self): self.embedding_db.add_embedding_dir(cmd_opts.embeddings_dir) def hijack(self, m): if type(m.cond_stage_model) == xlmr.BertSeriesModelWithTransformation: model_embeddings = m.cond_stage_model.roberta.embeddings model_embeddings.token_embedding = EmbeddingsWithFixes(model_embeddings.word_embeddings, self) m.cond_stage_model = sd_hijack_xlmr.FrozenXLMREmbedderWithCustomWords(m.cond_stage_model, self) elif type(m.cond_stage_model) == ldm.modules.encoders.modules.FrozenCLIPEmbedder: model_embeddings = m.cond_stage_model.transformer.text_model.embeddings model_embeddings.token_embedding = EmbeddingsWithFixes(model_embeddings.token_embedding, self) m.cond_stage_model = sd_hijack_clip.FrozenCLIPEmbedderWithCustomWords(m.cond_stage_model, self) elif type(m.cond_stage_model) == ldm.modules.encoders.modules.FrozenOpenCLIPEmbedder: m.cond_stage_model.model.token_embedding = EmbeddingsWithFixes(m.cond_stage_model.model.token_embedding, self) m.cond_stage_model = sd_hijack_open_clip.FrozenOpenCLIPEmbedderWithCustomWords(m.cond_stage_model, self) self.optimization_method = apply_optimizations() self.clip = m.cond_stage_model def flatten(el): flattened = [flatten(children) for children in el.children()] res = [el] for c in flattened: res += c return res self.layers = flatten(m) def undo_hijack(self, m): if type(m.cond_stage_model) == xlmr.BertSeriesModelWithTransformation: m.cond_stage_model = m.cond_stage_model.wrapped elif type(m.cond_stage_model) == sd_hijack_clip.FrozenCLIPEmbedderWithCustomWords: m.cond_stage_model = m.cond_stage_model.wrapped model_embeddings = m.cond_stage_model.transformer.text_model.embeddings if type(model_embeddings.token_embedding) == EmbeddingsWithFixes: model_embeddings.token_embedding = model_embeddings.token_embedding.wrapped elif type(m.cond_stage_model) == sd_hijack_open_clip.FrozenOpenCLIPEmbedderWithCustomWords: m.cond_stage_model.wrapped.model.token_embedding = m.cond_stage_model.wrapped.model.token_embedding.wrapped m.cond_stage_model = m.cond_stage_model.wrapped undo_optimizations() self.apply_circular(False) self.layers = None self.clip = None def apply_circular(self, enable): if self.circular_enabled == enable: return self.circular_enabled = enable for layer in [layer for layer in self.layers if type(layer) == torch.nn.Conv2d]: layer.padding_mode = 'circular' if enable else 'zeros' def clear_comments(self): self.comments = [] def get_prompt_lengths(self, text): _, token_count = self.clip.process_texts([text]) return token_count, self.clip.get_target_prompt_token_count(token_count) class EmbeddingsWithFixes(torch.nn.Module): def __init__(self, wrapped, embeddings): super().__init__() self.wrapped = wrapped self.embeddings = embeddings def forward(self, input_ids): batch_fixes = self.embeddings.fixes self.embeddings.fixes = None inputs_embeds = self.wrapped(input_ids) if batch_fixes is None or len(batch_fixes) == 0 or max([len(x) for x in batch_fixes]) == 0: return inputs_embeds vecs = [] for fixes, tensor in zip(batch_fixes, inputs_embeds): for offset, embedding in fixes: emb = devices.cond_cast_unet(embedding.vec) emb_len = min(tensor.shape[0] - offset - 1, emb.shape[0]) tensor = torch.cat([tensor[0:offset + 1], emb[0:emb_len], tensor[offset + 1 + emb_len:]]) vecs.append(tensor) return torch.stack(vecs) def add_circular_option_to_conv_2d(): conv2d_constructor = torch.nn.Conv2d.__init__ def conv2d_constructor_circular(self, *args, **kwargs): return conv2d_constructor(self, *args, padding_mode='circular', **kwargs) torch.nn.Conv2d.__init__ = conv2d_constructor_circular model_hijack = StableDiffusionModelHijack() def register_buffer(self, name, attr): """ Fix register buffer bug for Mac OS. """ if type(attr) == torch.Tensor: if attr.device != devices.device: attr = attr.to(device=devices.device, dtype=(torch.float32 if devices.device.type == 'mps' else None)) setattr(self, name, attr) ldm.models.diffusion.ddim.DDIMSampler.register_buffer = register_buffer ldm.models.diffusion.plms.PLMSSampler.register_buffer = register_buffer