diff --git a/CHANGELOG.md b/CHANGELOG.md index e92c46516..9029dcfeb 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,6 +1,6 @@ # Change Log for SD.Next -## Update for 2023-12-08 +## Update for 2023-12-09 *Note*: based on `diffusers==0.25.0.dev0` @@ -11,6 +11,11 @@ - **HDR controls** are now batch-aware for enhancement of multiple images or video frames - [Playground v1](https://huggingface.co/playgroundai/playground-v1), [Playground v2 256](https://huggingface.co/playgroundai/playground-v2-256px-base), [Playground v2 512](https://huggingface.co/playgroundai/playground-v2-512px-base), [Playground v2 1024](https://huggingface.co/playgroundai/playground-v2-1024px-aesthetic) model support - simply select from *networks -> reference* and use as usual + - [DemoFusion](https://github.com/PRIS-CV/DemoFusion) run your SDXL generations at any resolution! + - in **Text** tab select *script* -> *demofusion* + - *note*: GPU VRAM limits do not automatically go away so be careful when using it with large resolutions + in the future, expect more optimizations, especially related to offloading/slicing/tiling, + but at the moment this is pretty much experimental-only - [ModelScope T2V](https://huggingface.co/damo-vilab/text-to-video-ms-1.7b) model support - simply select from *networks -> reference* and use from *txt2img* tab - **Schedulers** @@ -18,7 +23,7 @@ - add rescale betas with zero SNR option (applicable to Euler and DDIM, allows for higher dynamic range) - **General** - **Process** create videos from batch or folder processing - supports GIF, PNG and MP4 with full interpolation, scene change detection, etc. + supports *GIF*, *PNG* and *MP4* with full interpolation, scene change detection, etc. - **LoRA** - add support for block weights, thanks @AI-Casanova example `` @@ -26,7 +31,7 @@ - add support for `lora_fuse_diffusers` if using alternative method use if you have multiple complex loras that may be causing performance degradation as it fuses lora with model during load instead of interpreting lora on-the-fly - - **CivitAI downloader** allow usage of access tokens for gated or private models + - **CivitAI downloader** allow usage of access tokens for download of gated or private models - **Extra networks** new *settting -> extra networks -> build info on first access* indexes all networks on first access instead of server startup - **Ipex** improvements, thanks @disty0 diff --git a/extensions-builtin/Lora/networks.py b/extensions-builtin/Lora/networks.py index e6e69d36b..cc0c34bc3 100644 --- a/extensions-builtin/Lora/networks.py +++ b/extensions-builtin/Lora/networks.py @@ -78,7 +78,7 @@ def load_diffusers(name, network_on_disk, lora_scale=1.0): t0 = time.time() cached = lora_cache.get(name, None) # if debug: - shared.log.debug(f'LoRA load: name={name} file={network_on_disk.filename} type=diffusers {"cached" if cached else ""} fuse={shared.opts.lora_fuse_diffusers}') + shared.log.debug(f'LoRA load: name="{name}" file="{network_on_disk.filename}" type=diffusers {"cached" if cached else ""} fuse={shared.opts.lora_fuse_diffusers}') if cached is not None: return cached if shared.backend != shared.Backend.DIFFUSERS: @@ -98,7 +98,7 @@ def load_network(name, network_on_disk): t0 = time.time() cached = lora_cache.get(name, None) if debug: - shared.log.debug(f'LoRA load: name={name} file={network_on_disk.filename} {"cached" if cached else ""}') + shared.log.debug(f'LoRA load: name="{name}" file="{network_on_disk.filename}" {"cached" if cached else ""}') if cached is not None: return cached net = network.Network(name, network_on_disk) diff --git a/modules/processing.py b/modules/processing.py index d0cbb7a26..cf3673482 100644 --- a/modules/processing.py +++ b/modules/processing.py @@ -757,6 +757,8 @@ def validate_sample(tensor): sample = 255.0 * np.moveaxis(tensor.cpu().numpy(), 0, 2) else: sample = 255.0 * tensor + if isinstance(tensor, torch.Tensor): + sample = sample.detach().cpu().numpy() with warnings.catch_warnings(record=True) as w: cast = sample.astype(np.uint8) if len(w) > 0: diff --git a/modules/prompt_parser_diffusers.py b/modules/prompt_parser_diffusers.py index 938be2447..f69b7e71e 100644 --- a/modules/prompt_parser_diffusers.py +++ b/modules/prompt_parser_diffusers.py @@ -60,7 +60,7 @@ class DiffusersTextualInversionManager(BaseTextualInversionManager): def encode_prompts(pipe, prompts: list, negative_prompts: list, clip_skip: typing.Optional[int] = None): - if 'StableDiffusion' not in pipe.__class__.__name__: + if 'StableDiffusion' not in pipe.__class__.__name__ and 'DemoFusion': shared.log.warning(f"Prompt parser not supported: {pipe.__class__.__name__}") return None, None, None, None else: diff --git a/scripts/animatediff.py b/scripts/animatediff.py index 00100b3b8..650f43d6b 100644 --- a/scripts/animatediff.py +++ b/scripts/animatediff.py @@ -94,7 +94,8 @@ def set_adapter(adapter_name: str = 'None'): new_pipe.is_sd2 = False new_pipe.is_sd1 = True shared.sd_model = new_pipe - shared.sd_model.to(shared.device) + if not ((shared.opts.diffusers_model_cpu_offload or shared.cmd_opts.medvram) or (shared.opts.diffusers_seq_cpu_offload or shared.cmd_opts.lowvram)): + shared.sd_model.to(shared.device) sd_models.set_diffuser_options(shared.sd_model, vae=None, op='model') shared.log.debug(f'AnimateDiff create pipeline: adapter="{loaded_adapter}"') except Exception as e: diff --git a/scripts/demofusion.py b/scripts/demofusion.py new file mode 100644 index 000000000..0d655b413 --- /dev/null +++ b/scripts/demofusion.py @@ -0,0 +1,1283 @@ +import random +import inspect +from typing import Any, Callable, Dict, List, Optional, Tuple, Union +import torch +import torch.nn.functional as F +import gradio as gr +from transformers import CLIPTextModel, CLIPTextModelWithProjection, CLIPTokenizer +from diffusers.image_processor import VaeImageProcessor +from diffusers.loaders import FromSingleFileMixin, LoraLoaderMixin, TextualInversionLoaderMixin +from diffusers.models import AutoencoderKL, UNet2DConditionModel +from diffusers.models.attention_processor import AttnProcessor2_0, LoRAAttnProcessor2_0, LoRAXFormersAttnProcessor, XFormersAttnProcessor +from diffusers.models.lora import adjust_lora_scale_text_encoder +from diffusers.schedulers import KarrasDiffusionSchedulers +from diffusers.utils import is_accelerate_available, is_accelerate_version +from diffusers.utils.torch_utils import randn_tensor +from diffusers.pipelines.pipeline_utils import DiffusionPipeline, ImagePipelineOutput +from modules import scripts, processing, shared, sd_models + + +### Class definition +""" +Credits: https://github.com/PRIS-CV/DemoFusion +Source: https://github.com/PRIS-CV/DemoFusion/blob/main/pipeline_demofusion_sdxl.py +""" + + +def gaussian_kernel(kernel_size=3, sigma=1.0, channels=3): + x_coord = torch.arange(kernel_size) + gaussian_1d = torch.exp(-(x_coord - (kernel_size - 1) / 2) ** 2 / (2 * sigma ** 2)) + gaussian_1d = gaussian_1d / gaussian_1d.sum() + gaussian_2d = gaussian_1d[:, None] * gaussian_1d[None, :] + kernel = gaussian_2d[None, None, :, :].repeat(channels, 1, 1, 1) + return kernel + + +def gaussian_filter(latents, kernel_size=3, sigma=1.0): + channels = latents.shape[1] + kernel = gaussian_kernel(kernel_size, sigma, channels).to(latents.device, latents.dtype) + blurred_latents = F.conv2d(latents, kernel, padding=kernel_size//2, groups=channels) + return blurred_latents + + +# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.rescale_noise_cfg +def rescale_noise_cfg(noise_cfg, noise_pred_text, guidance_rescale=0.0): + """ + Rescale `noise_cfg` according to `guidance_rescale`. Based on findings of [Common Diffusion Noise Schedules and + Sample Steps are Flawed](https://arxiv.org/pdf/2305.08891.pdf). See Section 3.4 + """ + std_text = noise_pred_text.std(dim=list(range(1, noise_pred_text.ndim)), keepdim=True) + std_cfg = noise_cfg.std(dim=list(range(1, noise_cfg.ndim)), keepdim=True) + # rescale the results from guidance (fixes overexposure) + noise_pred_rescaled = noise_cfg * (std_text / std_cfg) + # mix with the original results from guidance by factor guidance_rescale to avoid "plain looking" images + noise_cfg = guidance_rescale * noise_pred_rescaled + (1 - guidance_rescale) * noise_cfg + return noise_cfg + + +class DemoFusionSDXLPipeline(DiffusionPipeline, FromSingleFileMixin, LoraLoaderMixin, TextualInversionLoaderMixin): + model_cpu_offload_seq = "text_encoder->text_encoder_2->unet->vae" + + def __init__( + self, + vae: AutoencoderKL, + text_encoder: CLIPTextModel, + text_encoder_2: CLIPTextModelWithProjection, + tokenizer: CLIPTokenizer, + tokenizer_2: CLIPTokenizer, + unet: UNet2DConditionModel, + scheduler: KarrasDiffusionSchedulers, + force_zeros_for_empty_prompt: bool = True, + ): + super().__init__() + + self.register_modules( + vae=vae, + text_encoder=text_encoder, + text_encoder_2=text_encoder_2, + tokenizer=tokenizer, + tokenizer_2=tokenizer_2, + unet=unet, + scheduler=scheduler, + ) + self.register_to_config(force_zeros_for_empty_prompt=force_zeros_for_empty_prompt) + self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1) + self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor) + self.default_sample_size = self.unet.config.sample_size + self.watermark = None + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_slicing + def enable_vae_slicing(self): + self.vae.enable_slicing() + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_slicing + def disable_vae_slicing(self): + self.vae.disable_slicing() + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_tiling + def enable_vae_tiling(self): + self.vae.enable_tiling() + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_tiling + def disable_vae_tiling(self): + self.vae.disable_tiling() + + def encode_prompt( + self, + prompt: str, + prompt_2: Optional[str] = None, + device: Optional[torch.device] = None, + num_images_per_prompt: int = 1, + do_classifier_free_guidance: bool = True, + negative_prompt: Optional[str] = None, + negative_prompt_2: Optional[str] = None, + prompt_embeds: Optional[torch.FloatTensor] = None, + negative_prompt_embeds: Optional[torch.FloatTensor] = None, + pooled_prompt_embeds: Optional[torch.FloatTensor] = None, + negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None, + lora_scale: Optional[float] = None, + ): + device = device or self._execution_device + + # set lora scale so that monkey patched LoRA + # function of text encoder can correctly access it + if lora_scale is not None and isinstance(self, LoraLoaderMixin): + self._lora_scale = lora_scale # pylint: disable=attribute-defined-outside-init + # dynamically adjust the LoRA scale + adjust_lora_scale_text_encoder(self.text_encoder, lora_scale) + adjust_lora_scale_text_encoder(self.text_encoder_2, lora_scale) + + if prompt is not None and isinstance(prompt, str): + batch_size = 1 + elif prompt is not None and isinstance(prompt, list): + batch_size = len(prompt) + else: + batch_size = prompt_embeds.shape[0] + + # Define tokenizers and text encoders + tokenizers = [self.tokenizer, self.tokenizer_2] if self.tokenizer is not None else [self.tokenizer_2] + text_encoders = ( + [self.text_encoder, self.text_encoder_2] if self.text_encoder is not None else [self.text_encoder_2] + ) + + if prompt_embeds is None: + prompt_2 = prompt_2 or prompt + # textual inversion: procecss multi-vector tokens if necessary + prompt_embeds_list = [] + prompts = [prompt, prompt_2] + for prompt, tokenizer, text_encoder in zip(prompts, tokenizers, text_encoders): + if isinstance(self, TextualInversionLoaderMixin): + prompt = self.maybe_convert_prompt(prompt, tokenizer) + + text_inputs = tokenizer( + prompt, + padding="max_length", + max_length=tokenizer.model_max_length, + truncation=True, + return_tensors="pt", + ) + + text_input_ids = text_inputs.input_ids + untruncated_ids = tokenizer(prompt, padding="longest", return_tensors="pt").input_ids + + if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal( + text_input_ids, untruncated_ids + ): + removed_text = tokenizer.batch_decode(untruncated_ids[:, tokenizer.model_max_length - 1 : -1]) + shared.log.warning(f"The following part of your input was truncated because CLIP can only handle sequences up to {tokenizer.model_max_length} tokens: {removed_text}") + + prompt_embeds = text_encoder( + text_input_ids.to(device), + output_hidden_states=True, + ) + + # We are only ALWAYS interested in the pooled output of the final text encoder + pooled_prompt_embeds = prompt_embeds[0] + prompt_embeds = prompt_embeds.hidden_states[-2] + + prompt_embeds_list.append(prompt_embeds) + + prompt_embeds = torch.concat(prompt_embeds_list, dim=-1) + + # get unconditional embeddings for classifier free guidance + zero_out_negative_prompt = negative_prompt is None and self.config.force_zeros_for_empty_prompt # pylint: disable=no-member + if do_classifier_free_guidance and negative_prompt_embeds is None and zero_out_negative_prompt: + negative_prompt_embeds = torch.zeros_like(prompt_embeds) + negative_pooled_prompt_embeds = torch.zeros_like(pooled_prompt_embeds) + elif do_classifier_free_guidance and negative_prompt_embeds is None: + negative_prompt = negative_prompt or "" + negative_prompt_2 = negative_prompt_2 or negative_prompt + + uncond_tokens: List[str] + if prompt is not None and type(prompt) is not type(negative_prompt): + raise TypeError( + f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !=" + f" {type(prompt)}." + ) + elif isinstance(negative_prompt, str): + uncond_tokens = [negative_prompt, negative_prompt_2] + elif batch_size != len(negative_prompt): + raise ValueError( + f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:" + f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches" + " the batch size of `prompt`." + ) + else: + uncond_tokens = [negative_prompt, negative_prompt_2] + + negative_prompt_embeds_list = [] + for negative_prompt, tokenizer, text_encoder in zip(uncond_tokens, tokenizers, text_encoders): + if isinstance(self, TextualInversionLoaderMixin): + negative_prompt = self.maybe_convert_prompt(negative_prompt, tokenizer) + + max_length = prompt_embeds.shape[1] + uncond_input = tokenizer( + negative_prompt, + padding="max_length", + max_length=max_length, + truncation=True, + return_tensors="pt", + ) + + negative_prompt_embeds = text_encoder( + uncond_input.input_ids.to(device), + output_hidden_states=True, + ) + # We are only ALWAYS interested in the pooled output of the final text encoder + negative_pooled_prompt_embeds = negative_prompt_embeds[0] + negative_prompt_embeds = negative_prompt_embeds.hidden_states[-2] + negative_prompt_embeds_list.append(negative_prompt_embeds) + negative_prompt_embeds = torch.concat(negative_prompt_embeds_list, dim=-1) + + prompt_embeds = prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device) + bs_embed, seq_len, _ = prompt_embeds.shape + # duplicate text embeddings for each generation per prompt, using mps friendly method + prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1) + prompt_embeds = prompt_embeds.view(bs_embed * num_images_per_prompt, seq_len, -1) + + if do_classifier_free_guidance: + # duplicate unconditional embeddings for each generation per prompt, using mps friendly method + seq_len = negative_prompt_embeds.shape[1] + negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device) + negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt, 1) + negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len, -1) + + pooled_prompt_embeds = pooled_prompt_embeds.repeat(1, num_images_per_prompt).view( + bs_embed * num_images_per_prompt, -1 + ) + if do_classifier_free_guidance: + negative_pooled_prompt_embeds = negative_pooled_prompt_embeds.repeat(1, num_images_per_prompt).view( + bs_embed * num_images_per_prompt, -1 + ) + + return prompt_embeds, negative_prompt_embeds, pooled_prompt_embeds, negative_pooled_prompt_embeds + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_extra_step_kwargs + def prepare_extra_step_kwargs(self, generator, eta): + # prepare extra kwargs for the scheduler step, since not all schedulers have the same signature + # eta (η) is only used with the DDIMScheduler, it will be ignored for other schedulers. + # eta corresponds to η in DDIM paper: https://arxiv.org/abs/2010.02502 + # and should be between [0, 1] + + accepts_eta = "eta" in set(inspect.signature(self.scheduler.step).parameters.keys()) + extra_step_kwargs = {} + if accepts_eta: + extra_step_kwargs["eta"] = eta + + # check if the scheduler accepts generator + accepts_generator = "generator" in set(inspect.signature(self.scheduler.step).parameters.keys()) + if accepts_generator: + extra_step_kwargs["generator"] = generator + return extra_step_kwargs + + def check_inputs( + self, + prompt, + prompt_2, + height, + width, + callback_steps, + negative_prompt=None, + negative_prompt_2=None, + prompt_embeds=None, + negative_prompt_embeds=None, + pooled_prompt_embeds=None, + negative_pooled_prompt_embeds=None, + num_images_per_prompt=None, + ): + if height % 8 != 0 or width % 8 != 0: + raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.") + + if (callback_steps is None) or ( + callback_steps is not None and (not isinstance(callback_steps, int) or callback_steps <= 0) + ): + raise ValueError( + f"`callback_steps` has to be a positive integer but is {callback_steps} of type" + f" {type(callback_steps)}." + ) + + if prompt is not None and prompt_embeds is not None: + raise ValueError( + f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to" + " only forward one of the two." + ) + elif prompt_2 is not None and prompt_embeds is not None: + raise ValueError( + f"Cannot forward both `prompt_2`: {prompt_2} and `prompt_embeds`: {prompt_embeds}. Please make sure to" + " only forward one of the two." + ) + elif prompt is None and prompt_embeds is None: + raise ValueError( + "Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined." + ) + elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)): + raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}") + elif prompt_2 is not None and (not isinstance(prompt_2, str) and not isinstance(prompt_2, list)): + raise ValueError(f"`prompt_2` has to be of type `str` or `list` but is {type(prompt_2)}") + + if negative_prompt is not None and negative_prompt_embeds is not None: + raise ValueError( + f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:" + f" {negative_prompt_embeds}. Please make sure to only forward one of the two." + ) + elif negative_prompt_2 is not None and negative_prompt_embeds is not None: + raise ValueError( + f"Cannot forward both `negative_prompt_2`: {negative_prompt_2} and `negative_prompt_embeds`:" + f" {negative_prompt_embeds}. Please make sure to only forward one of the two." + ) + + if prompt_embeds is not None and negative_prompt_embeds is not None: + if prompt_embeds.shape != negative_prompt_embeds.shape: + raise ValueError( + "`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but" + f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`" + f" {negative_prompt_embeds.shape}." + ) + + if prompt_embeds is not None and pooled_prompt_embeds is None: + raise ValueError( + "If `prompt_embeds` are provided, `pooled_prompt_embeds` also have to be passed. Make sure to generate `pooled_prompt_embeds` from the same text encoder that was used to generate `prompt_embeds`." + ) + + if negative_prompt_embeds is not None and negative_pooled_prompt_embeds is None: + raise ValueError( + "If `negative_prompt_embeds` are provided, `negative_pooled_prompt_embeds` also have to be passed. Make sure to generate `negative_pooled_prompt_embeds` from the same text encoder that was used to generate `negative_prompt_embeds`." + ) + + # DemoFusion specific checks + if max(height, width) % 1024 != 0: + shared.log.error('DemoFusion: resolution={width}x{height} long side must be divisible by 1024') + return None + + if num_images_per_prompt != 1: + shared.log.warning('DemoFusion: number of images per prompt is not support and will be ignored') + num_images_per_prompt = 1 + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_latents + def prepare_latents(self, batch_size, num_channels_latents, height, width, dtype, device, generator, latents=None): + shape = (batch_size, num_channels_latents, height // self.vae_scale_factor, width // self.vae_scale_factor) + if isinstance(generator, list) and len(generator) != batch_size: + raise ValueError( + f"You have passed a list of generators of length {len(generator)}, but requested an effective batch" + f" size of {batch_size}. Make sure the batch size matches the length of the generators." + ) + + if latents is None: + latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype) + else: + latents = latents.to(device) + + # scale the initial noise by the standard deviation required by the scheduler + latents = latents * self.scheduler.init_noise_sigma + return latents + + def _get_add_time_ids(self, original_size, crops_coords_top_left, target_size, dtype): + add_time_ids = list(original_size + crops_coords_top_left + target_size) + + passed_add_embed_dim = ( + self.unet.config.addition_time_embed_dim * len(add_time_ids) + self.text_encoder_2.config.projection_dim + ) + expected_add_embed_dim = self.unet.add_embedding.linear_1.in_features + + if expected_add_embed_dim != passed_add_embed_dim: + raise ValueError( + f"Model expects an added time embedding vector of length {expected_add_embed_dim}, but a vector of {passed_add_embed_dim} was created. The model has an incorrect config. Please check `unet.config.time_embedding_type` and `text_encoder_2.config.projection_dim`." + ) + + add_time_ids = torch.tensor([add_time_ids], dtype=dtype) + return add_time_ids + + def get_views(self, height, width, window_size=128, stride=64, random_jitter=False): + # Here, we define the mappings F_i (see Eq. 7 in the MultiDiffusion paper https://arxiv.org/abs/2302.08113) + # if panorama's height/width < window_size, num_blocks of height/width should return 1 + height //= self.vae_scale_factor + width //= self.vae_scale_factor + num_blocks_height = int((height - window_size) / stride - 1e-6) + 2 if height > window_size else 1 + num_blocks_width = int((width - window_size) / stride - 1e-6) + 2 if width > window_size else 1 + total_num_blocks = int(num_blocks_height * num_blocks_width) + views = [] + for i in range(total_num_blocks): + h_start = int((i // num_blocks_width) * stride) + h_end = h_start + window_size + w_start = int((i % num_blocks_width) * stride) + w_end = w_start + window_size + + if h_end > height: + h_start = int(h_start + height - h_end) + h_end = int(height) + if w_end > width: + w_start = int(w_start + width - w_end) + w_end = int(width) + if h_start < 0: + h_end = int(h_end - h_start) + h_start = 0 + if w_start < 0: + w_end = int(w_end - w_start) + w_start = 0 + + if random_jitter: + jitter_range = (window_size - stride) // 4 + w_jitter = 0 + h_jitter = 0 + if (w_start != 0) and (w_end != width): + w_jitter = random.randint(-jitter_range, jitter_range) + elif (w_start == 0) and (w_end != width): + w_jitter = random.randint(-jitter_range, 0) + elif (w_start != 0) and (w_end == width): + w_jitter = random.randint(0, jitter_range) + if (h_start != 0) and (h_end != height): + h_jitter = random.randint(-jitter_range, jitter_range) + elif (h_start == 0) and (h_end != height): + h_jitter = random.randint(-jitter_range, 0) + elif (h_start != 0) and (h_end == height): + h_jitter = random.randint(0, jitter_range) + h_start += (h_jitter + jitter_range) + h_end += (h_jitter + jitter_range) + w_start += (w_jitter + jitter_range) + w_end += (w_jitter + jitter_range) + + views.append((h_start, h_end, w_start, w_end)) + return views + + def tiled_decode(self, latents, current_height, current_width): + core_size = self.unet.config.sample_size // 4 + core_stride = core_size + pad_size = self.unet.config.sample_size // 4 * 3 + decoder_view_batch_size = 1 + + if self.lowvram: + core_stride = core_size // 2 + pad_size = core_size + + views = self.get_views(current_height, current_width, stride=core_stride, window_size=core_size) + views_batch = [views[i : i + decoder_view_batch_size] for i in range(0, len(views), decoder_view_batch_size)] + latents_ = F.pad(latents, (pad_size, pad_size, pad_size, pad_size), 'constant', 0) + image = torch.zeros(latents.size(0), 3, current_height, current_width).to(latents.device) + count = torch.zeros_like(image).to(latents.device) + # get the latents corresponding to the current view coordinates + with self.progress_bar(total=len(views_batch)) as progress_bar: + for j, batch_view in enumerate(views_batch): + len(batch_view) + latents_for_view = torch.cat( + [ + latents_[:, :, h_start:h_end+pad_size*2, w_start:w_end+pad_size*2] + for h_start, h_end, w_start, w_end in batch_view + ] + ).to(self.vae.device) + image_patch = self.vae.decode(latents_for_view / self.vae.config.scaling_factor, return_dict=False)[0] + h_start, h_end, w_start, w_end = views[j] + h_start, h_end, w_start, w_end = h_start * self.vae_scale_factor, h_end * self.vae_scale_factor, w_start * self.vae_scale_factor, w_end * self.vae_scale_factor + p_h_start, p_h_end, p_w_start, p_w_end = pad_size * self.vae_scale_factor, image_patch.size(2) - pad_size * self.vae_scale_factor, pad_size * self.vae_scale_factor, image_patch.size(3) - pad_size * self.vae_scale_factor + image[:, :, h_start:h_end, w_start:w_end] += image_patch[:, :, p_h_start:p_h_end, p_w_start:p_w_end].to(latents.device) + count[:, :, h_start:h_end, w_start:w_end] += 1 + progress_bar.update() + image = image / count + + return image + + # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion_upscale.StableDiffusionUpscalePipeline.upcast_vae + def upcast_vae(self): + dtype = self.vae.dtype + self.vae.to(dtype=torch.float32) + use_torch_2_0_or_xformers = isinstance( + self.vae.decoder.mid_block.attentions[0].processor, + ( + AttnProcessor2_0, + XFormersAttnProcessor, + LoRAXFormersAttnProcessor, + LoRAAttnProcessor2_0, + ), + ) + # if xformers or torch_2_0 is used attention block does not need + # to be in float32 which can save lots of memory + if use_torch_2_0_or_xformers: + self.vae.post_quant_conv.to(dtype) + self.vae.decoder.conv_in.to(dtype) + self.vae.decoder.mid_block.to(dtype) + + @torch.no_grad() + def __call__( + self, + prompt: Union[str, List[str]] = None, + prompt_2: Optional[Union[str, List[str]]] = None, + height: Optional[int] = None, + width: Optional[int] = None, + num_inference_steps: int = 50, + denoising_end: Optional[float] = None, + guidance_scale: float = 5.0, + negative_prompt: Optional[Union[str, List[str]]] = None, + negative_prompt_2: Optional[Union[str, List[str]]] = None, + num_images_per_prompt: Optional[int] = 1, + eta: float = 0.0, + generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None, + latents: Optional[torch.FloatTensor] = None, + prompt_embeds: Optional[torch.FloatTensor] = None, + negative_prompt_embeds: Optional[torch.FloatTensor] = None, + pooled_prompt_embeds: Optional[torch.FloatTensor] = None, + negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None, + output_type: Optional[str] = "pil", + return_dict: bool = False, + callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None, + callback_steps: int = 1, + cross_attention_kwargs: Optional[Dict[str, Any]] = None, + guidance_rescale: float = 0.0, + original_size: Optional[Tuple[int, int]] = None, + crops_coords_top_left: Tuple[int, int] = (0, 0), + target_size: Optional[Tuple[int, int]] = None, + negative_original_size: Optional[Tuple[int, int]] = None, + negative_crops_coords_top_left: Tuple[int, int] = (0, 0), + negative_target_size: Optional[Tuple[int, int]] = None, + ################### DemoFusion specific parameters #################### + view_batch_size: int = 16, + multi_decoder: bool = True, + stride: Optional[int] = 64, + cosine_scale_1: Optional[float] = 3., + cosine_scale_2: Optional[float] = 1., + cosine_scale_3: Optional[float] = 1., + sigma: Optional[float] = 1.0, + lowvram: bool = False, + ): + r""" + Function invoked when calling the pipeline for generation. + + Args: + prompt (`str` or `List[str]`, *optional*): + The prompt or prompts to guide the image generation. If not defined, one has to pass `prompt_embeds`. + instead. + prompt_2 (`str` or `List[str]`, *optional*): + The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is + used in both text-encoders + height (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor): + The height in pixels of the generated image. This is set to 1024 by default for the best results. + Anything below 512 pixels won't work well for + [stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0) + and checkpoints that are not specifically fine-tuned on low resolutions. + width (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor): + The width in pixels of the generated image. This is set to 1024 by default for the best results. + Anything below 512 pixels won't work well for + [stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0) + and checkpoints that are not specifically fine-tuned on low resolutions. + num_inference_steps (`int`, *optional*, defaults to 50): + The number of denoising steps. More denoising steps usually lead to a higher quality image at the + expense of slower inference. + denoising_end (`float`, *optional*): + When specified, determines the fraction (between 0.0 and 1.0) of the total denoising process to be + completed before it is intentionally prematurely terminated. As a result, the returned sample will + still retain a substantial amount of noise as determined by the discrete timesteps selected by the + scheduler. The denoising_end parameter should ideally be utilized when this pipeline forms a part of a + "Mixture of Denoisers" multi-pipeline setup, as elaborated in [**Refining the Image + Output**](https://huggingface.co/docs/diffusers/api/pipelines/stable_diffusion/stable_diffusion_xl#refining-the-image-output) + guidance_scale (`float`, *optional*, defaults to 5.0): + Guidance scale as defined in [Classifier-Free Diffusion Guidance](https://arxiv.org/abs/2207.12598). + `guidance_scale` is defined as `w` of equation 2. of [Imagen + Paper](https://arxiv.org/pdf/2205.11487.pdf). Guidance scale is enabled by setting `guidance_scale > + 1`. Higher guidance scale encourages to generate images that are closely linked to the text `prompt`, + usually at the expense of lower image quality. + negative_prompt (`str` or `List[str]`, *optional*): + The prompt or prompts not to guide the image generation. If not defined, one has to pass + `negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is + less than `1`). + negative_prompt_2 (`str` or `List[str]`, *optional*): + The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and + `text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders + num_images_per_prompt (`int`, *optional*, defaults to 1): + The number of images to generate per prompt. + eta (`float`, *optional*, defaults to 0.0): + Corresponds to parameter eta (η) in the DDIM paper: https://arxiv.org/abs/2010.02502. Only applies to + [`schedulers.DDIMScheduler`], will be ignored for others. + generator (`torch.Generator` or `List[torch.Generator]`, *optional*): + One or a list of [torch generator(s)](https://pytorch.org/docs/stable/generated/torch.Generator.html) + to make generation deterministic. + latents (`torch.FloatTensor`, *optional*): + Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image + generation. Can be used to tweak the same generation with different prompts. If not provided, a latents + tensor will ge generated by sampling using the supplied random `generator`. + prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not + provided, text embeddings will be generated from `prompt` input argument. + negative_prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt + weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input + argument. + pooled_prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. + If not provided, pooled text embeddings will be generated from `prompt` input argument. + negative_pooled_prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt + weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt` + input argument. + output_type (`str`, *optional*, defaults to `"pil"`): + The output format of the generate image. Choose between + [PIL](https://pillow.readthedocs.io/en/stable/): `PIL.Image.Image` or `np.array`. + return_dict (`bool`, *optional*, defaults to `True`): + Whether or not to return a [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] instead + of a plain tuple. + callback (`Callable`, *optional*): + A function that will be called every `callback_steps` steps during inference. The function will be + called with the following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`. + callback_steps (`int`, *optional*, defaults to 1): + The frequency at which the `callback` function will be called. If not specified, the callback will be + called at every step. + cross_attention_kwargs (`dict`, *optional*): + A kwargs dictionary that if specified is passed along to the `AttentionProcessor` as defined under + `self.processor` in + [diffusers.models.attention_processor](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py). + guidance_rescale (`float`, *optional*, defaults to 0.7): + Guidance rescale factor proposed by [Common Diffusion Noise Schedules and Sample Steps are + Flawed](https://arxiv.org/pdf/2305.08891.pdf) `guidance_scale` is defined as `φ` in equation 16. of + [Common Diffusion Noise Schedules and Sample Steps are Flawed](https://arxiv.org/pdf/2305.08891.pdf). + Guidance rescale factor should fix overexposure when using zero terminal SNR. + original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + If `original_size` is not the same as `target_size` the image will appear to be down- or upsampled. + `original_size` defaults to `(width, height)` if not specified. Part of SDXL's micro-conditioning as + explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). + crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)): + `crops_coords_top_left` can be used to generate an image that appears to be "cropped" from the position + `crops_coords_top_left` downwards. Favorable, well-centered images are usually achieved by setting + `crops_coords_top_left` to (0, 0). Part of SDXL's micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). + target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + For most cases, `target_size` should be set to the desired height and width of the generated image. If + not specified it will default to `(width, height)`. Part of SDXL's micro-conditioning as explained in + section 2.2 of [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). + negative_original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + To negatively condition the generation process based on a specific image resolution. Part of SDXL's + micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more + information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208. + negative_crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)): + To negatively condition the generation process based on a specific crop coordinates. Part of SDXL's + micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more + information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208. + negative_target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + To negatively condition the generation process based on a target image resolution. It should be as same + as the `target_size` for most cases. Part of SDXL's micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more + information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208. + ################### DemoFusion specific parameters #################### + view_batch_size (`int`, defaults to 16): + The batch size for multiple denoising paths. Typically, a larger batch size can result in higher + efficiency but comes with increased GPU memory requirements. + multi_decoder (`bool`, defaults to True): + Determine whether to use a tiled decoder. Generally, when the resolution exceeds 3072x3072, + a tiled decoder becomes necessary. + stride (`int`, defaults to 64): + The stride of moving local patches. A smaller stride is better for alleviating seam issues, + but it also introduces additional computational overhead and inference time. + cosine_scale_1 (`float`, defaults to 3): + Control the strength of skip-residual. For specific impacts, please refer to Appendix C + in the DemoFusion paper. + cosine_scale_2 (`float`, defaults to 1): + Control the strength of dilated sampling. For specific impacts, please refer to Appendix C + in the DemoFusion paper. + cosine_scale_3 (`float`, defaults to 1): + Control the strength of the gaussion filter. For specific impacts, please refer to Appendix C + in the DemoFusion paper. + sigma (`float`, defaults to 1): + The standard value of the gaussian filter. + show_image (`bool`, defaults to False): + Determine whether to show intermediate results during generation. + lowvram (`bool`, defaults to False): + Try to fit in 8 Gb of VRAM, with xformers installed. + + Examples: + + Returns: + a `list` with the generated images at each phase. + """ + + # 0. Default height and width to unet + height = height or self.default_sample_size * self.vae_scale_factor + width = width or self.default_sample_size * self.vae_scale_factor + + x1_size = self.default_sample_size * self.vae_scale_factor + + height_scale = height / x1_size + width_scale = width / x1_size + scale_num = int(max(height_scale, width_scale)) + aspect_ratio = min(height_scale, width_scale) / max(height_scale, width_scale) + + original_size = original_size or (height, width) + target_size = target_size or (height, width) + + # 1. Check inputs. Raise error if not correct + self.check_inputs( + prompt, + prompt_2, + height, + width, + callback_steps, + negative_prompt, + negative_prompt_2, + prompt_embeds, + negative_prompt_embeds, + pooled_prompt_embeds, + negative_pooled_prompt_embeds, + num_images_per_prompt, + ) + + # 2. Define call parameters + if prompt is not None and isinstance(prompt, str): + batch_size = 1 + elif prompt is not None and isinstance(prompt, list): + batch_size = len(prompt) + else: + batch_size = prompt_embeds.shape[0] + + device = self._execution_device + self.lowvram = lowvram # pylint: disable=attribute-defined-outside-init + if self.lowvram: + self.vae.cpu() + self.unet.cpu() + self.text_encoder.to(device) + self.text_encoder_2.to(device) + + # here `guidance_scale` is defined analog to the guidance weight `w` of equation (2) + # of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1` + # corresponds to doing no classifier free guidance. + do_classifier_free_guidance = guidance_scale > 1.0 + + # 3. Encode input prompt + text_encoder_lora_scale = ( + cross_attention_kwargs.get("scale", None) if cross_attention_kwargs is not None else None + ) + ( + prompt_embeds, + negative_prompt_embeds, + pooled_prompt_embeds, + negative_pooled_prompt_embeds, + ) = self.encode_prompt( + prompt=prompt, + prompt_2=prompt_2, + device=device, + num_images_per_prompt=num_images_per_prompt, + do_classifier_free_guidance=do_classifier_free_guidance, + negative_prompt=negative_prompt, + negative_prompt_2=negative_prompt_2, + prompt_embeds=prompt_embeds, + negative_prompt_embeds=negative_prompt_embeds, + pooled_prompt_embeds=pooled_prompt_embeds, + negative_pooled_prompt_embeds=negative_pooled_prompt_embeds, + lora_scale=text_encoder_lora_scale, + ) + + # 4. Prepare timesteps + self.scheduler.set_timesteps(num_inference_steps, device=device) + + timesteps = self.scheduler.timesteps + + # 5. Prepare latent variables + num_channels_latents = self.unet.config.in_channels + latents = self.prepare_latents( + batch_size * num_images_per_prompt, + num_channels_latents, + height // scale_num, + width // scale_num, + prompt_embeds.dtype, + device, + generator, + latents, + ) + + # 6. Prepare extra step kwargs. TODO: Logic should ideally just be moved out of the pipeline + extra_step_kwargs = self.prepare_extra_step_kwargs(generator, eta) + + # 7. Prepare added time ids & embeddings + add_text_embeds = pooled_prompt_embeds + add_time_ids = self._get_add_time_ids( + original_size, crops_coords_top_left, target_size, dtype=prompt_embeds.dtype + ) + if negative_original_size is not None and negative_target_size is not None: + negative_add_time_ids = self._get_add_time_ids( + negative_original_size, + negative_crops_coords_top_left, + negative_target_size, + dtype=prompt_embeds.dtype, + ) + else: + negative_add_time_ids = add_time_ids + + if do_classifier_free_guidance: + prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds], dim=0) + add_text_embeds = torch.cat([negative_pooled_prompt_embeds, add_text_embeds], dim=0) + add_time_ids = torch.cat([negative_add_time_ids, add_time_ids], dim=0) + del negative_prompt_embeds, negative_pooled_prompt_embeds, negative_add_time_ids + + prompt_embeds = prompt_embeds.to(device) + add_text_embeds = add_text_embeds.to(device) + add_time_ids = add_time_ids.to(device).repeat(batch_size * num_images_per_prompt, 1) + + # 8. Denoising loop + num_warmup_steps = max(len(timesteps) - num_inference_steps * self.scheduler.order, 0) + + # 7.1 Apply denoising_end + if denoising_end is not None and isinstance(denoising_end, float) and denoising_end > 0 and denoising_end < 1: + discrete_timestep_cutoff = int( + round( + self.scheduler.config.num_train_timesteps + - (denoising_end * self.scheduler.config.num_train_timesteps) + ) + ) + num_inference_steps = len(list(filter(lambda ts: ts >= discrete_timestep_cutoff, timesteps))) + timesteps = timesteps[:num_inference_steps] + + output_images = [] + + ############################################################### Phase 1 ################################################################# + + if self.lowvram: + self.text_encoder.cpu() + self.text_encoder_2.cpu() + + shared.log.debug('DemoFusion: phase=1 denoising') + with self.progress_bar(total=num_inference_steps) as progress_bar: + for i, t in enumerate(timesteps): + + if self.lowvram: + self.vae.cpu() + self.unet.to(device) + + latents_for_view = latents + + # expand the latents if we are doing classifier free guidance + latent_model_input = ( + latents.repeat_interleave(2, dim=0) + if do_classifier_free_guidance + else latents + ) + latent_model_input = self.scheduler.scale_model_input(latent_model_input, t) + + # predict the noise residual + added_cond_kwargs = {"text_embeds": add_text_embeds, "time_ids": add_time_ids} + noise_pred = self.unet( + latent_model_input, + t, + encoder_hidden_states=prompt_embeds, + cross_attention_kwargs=cross_attention_kwargs, + added_cond_kwargs=added_cond_kwargs, + return_dict=False, + )[0] + + # perform guidance + if do_classifier_free_guidance: + noise_pred_uncond, noise_pred_text = noise_pred[::2], noise_pred[1::2] + noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond) + + if do_classifier_free_guidance and guidance_rescale > 0.0: + # Based on 3.4. in https://arxiv.org/pdf/2305.08891.pdf + noise_pred = rescale_noise_cfg(noise_pred, noise_pred_text, guidance_rescale=guidance_rescale) + + # compute the previous noisy sample x_t -> x_t-1 + latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs, return_dict=False)[0] + + # call the callback, if provided + if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0): + progress_bar.update() + if callback is not None and i % callback_steps == 0: + step_idx = i // getattr(self.scheduler, "order", 1) + callback(step_idx, t, latents) + + anchor_mean = latents.mean() + anchor_std = latents.std() + del latents_for_view, latent_model_input, noise_pred, noise_pred_text, noise_pred_uncond + if self.lowvram: + latents = latents.cpu() + torch.cuda.empty_cache() + if output_type != "latent": + # make sure the VAE is in float32 mode, as it overflows in float16 + needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast + + if self.lowvram: + needs_upcasting = False # use madebyollin/sdxl-vae-fp16-fix in lowvram mode! + self.unet.cpu() + self.vae.to(device) + + if needs_upcasting: + self.upcast_vae() + latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype) + shared.log.debug('DemoFusion: phase=1 decoding') + if self.lowvram and multi_decoder: + current_width_height = self.unet.config.sample_size * self.vae_scale_factor + image = self.tiled_decode(latents, current_width_height, current_width_height) + else: + image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0] + # cast back to fp16 if needed + if needs_upcasting: + self.vae.to(dtype=torch.float16) + image = self.image_processor.postprocess(image, output_type=output_type) + output_images.append(image[0]) + else: + output_images.append(latents) + + ####################################################### Phase 2+ ##################################################### + for current_scale_num in range(2, scale_num + 1): + if self.lowvram: + latents = latents.to(device) + self.unet.to(device) + torch.cuda.empty_cache() + shared.log.debug(f'DemoFusion: phase={current_scale_num} denoising') + current_height = self.unet.config.sample_size * self.vae_scale_factor * current_scale_num + current_width = self.unet.config.sample_size * self.vae_scale_factor * current_scale_num + if height > width: + current_width = int(current_width * aspect_ratio) + else: + current_height = int(current_height * aspect_ratio) + + latents = F.interpolate(latents.to(device), size=(int(current_height / self.vae_scale_factor), int(current_width / self.vae_scale_factor)), mode='bicubic') + + noise_latents = [] + noise = torch.randn_like(latents) + for timestep in timesteps: + noise_latent = self.scheduler.add_noise(latents, noise, timestep.unsqueeze(0)) + noise_latents.append(noise_latent) + latents = noise_latents[0] + + with self.progress_bar(total=num_inference_steps) as progress_bar: + for i, t in enumerate(timesteps): + count = torch.zeros_like(latents) + value = torch.zeros_like(latents) + cosine_factor = 0.5 * (1 + torch.cos(torch.pi * (self.scheduler.config.num_train_timesteps - t) / self.scheduler.config.num_train_timesteps)).cpu() + + c1 = cosine_factor ** cosine_scale_1 + latents = latents * (1 - c1) + noise_latents[i] * c1 + + ############################################# MultiDiffusion ############################################# + + views = self.get_views(current_height, current_width, stride=stride, window_size=self.unet.config.sample_size, random_jitter=True) + views_batch = [views[i : i + view_batch_size] for i in range(0, len(views), view_batch_size)] + + jitter_range = (self.unet.config.sample_size - stride) // 4 + latents_ = F.pad(latents, (jitter_range, jitter_range, jitter_range, jitter_range), 'constant', 0) + + count_local = torch.zeros_like(latents_) + value_local = torch.zeros_like(latents_) + + for _j, batch_view in enumerate(views_batch): + vb_size = len(batch_view) + + # get the latents corresponding to the current view coordinates + latents_for_view = torch.cat( + [ + latents_[:, :, h_start:h_end, w_start:w_end] + for h_start, h_end, w_start, w_end in batch_view + ] + ) + + # expand the latents if we are doing classifier free guidance + latent_model_input = latents_for_view + latent_model_input = ( + latent_model_input.repeat_interleave(2, dim=0) + if do_classifier_free_guidance + else latent_model_input + ) + latent_model_input = self.scheduler.scale_model_input(latent_model_input, t) + + prompt_embeds_input = torch.cat([prompt_embeds] * vb_size) + add_text_embeds_input = torch.cat([add_text_embeds] * vb_size) + add_time_ids_input = [] + for h_start, _h_end, w_start, _w_end in batch_view: + add_time_ids_ = add_time_ids.clone() + add_time_ids_[:, 2] = h_start * self.vae_scale_factor + add_time_ids_[:, 3] = w_start * self.vae_scale_factor + add_time_ids_input.append(add_time_ids_) + add_time_ids_input = torch.cat(add_time_ids_input) + + # predict the noise residual + added_cond_kwargs = {"text_embeds": add_text_embeds_input, "time_ids": add_time_ids_input} + noise_pred = self.unet( + latent_model_input, + t, + encoder_hidden_states=prompt_embeds_input, + cross_attention_kwargs=cross_attention_kwargs, + added_cond_kwargs=added_cond_kwargs, + return_dict=False, + )[0] + + if do_classifier_free_guidance: + noise_pred_uncond, noise_pred_text = noise_pred[::2], noise_pred[1::2] + noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond) + + if do_classifier_free_guidance and guidance_rescale > 0.0: + # Based on 3.4. in https://arxiv.org/pdf/2305.08891.pdf + noise_pred = rescale_noise_cfg(noise_pred, noise_pred_text, guidance_rescale=guidance_rescale) + + # compute the previous noisy sample x_t -> x_t-1 + self.scheduler._init_step_index(t) + latents_denoised_batch = self.scheduler.step( + noise_pred, t, latents_for_view, **extra_step_kwargs, return_dict=False)[0] + + # extract value from batch + for latents_view_denoised, (h_start, h_end, w_start, w_end) in zip( + latents_denoised_batch.chunk(vb_size), batch_view + ): + value_local[:, :, h_start:h_end, w_start:w_end] += latents_view_denoised + count_local[:, :, h_start:h_end, w_start:w_end] += 1 + + value_local = value_local[: ,:, jitter_range: jitter_range + current_height // self.vae_scale_factor, jitter_range: jitter_range + current_width // self.vae_scale_factor] + count_local = count_local[: ,:, jitter_range: jitter_range + current_height // self.vae_scale_factor, jitter_range: jitter_range + current_width // self.vae_scale_factor] + + c2 = cosine_factor ** cosine_scale_2 + + value += value_local / count_local * (1 - c2) + count += torch.ones_like(value_local) * (1 - c2) + + ############################################# Dilated Sampling ############################################# + + views = [[h, w] for h in range(current_scale_num) for w in range(current_scale_num)] + views_batch = [views[i : i + view_batch_size] for i in range(0, len(views), view_batch_size)] + + h_pad = (current_scale_num - (latents.size(2) % current_scale_num)) % current_scale_num + w_pad = (current_scale_num - (latents.size(3) % current_scale_num)) % current_scale_num + latents_ = F.pad(latents, (w_pad, 0, h_pad, 0), 'constant', 0) + + count_global = torch.zeros_like(latents_) + value_global = torch.zeros_like(latents_) + + c3 = 0.99 * cosine_factor ** cosine_scale_3 + 1e-2 + std_, mean_ = latents_.std(), latents_.mean() + latents_gaussian = gaussian_filter(latents_, kernel_size=(2*current_scale_num-1), sigma=sigma*c3) + latents_gaussian = (latents_gaussian - latents_gaussian.mean()) / latents_gaussian.std() * std_ + mean_ + + for _j, batch_view in enumerate(views_batch): + latents_for_view = torch.cat( + [ + latents_[:, :, h::current_scale_num, w::current_scale_num] + for h, w in batch_view + ] + ) + latents_for_view_gaussian = torch.cat( + [ + latents_gaussian[:, :, h::current_scale_num, w::current_scale_num] + for h, w in batch_view + ] + ) + + vb_size = latents_for_view.size(0) + + # expand the latents if we are doing classifier free guidance + latent_model_input = latents_for_view_gaussian + latent_model_input = ( + latent_model_input.repeat_interleave(2, dim=0) + if do_classifier_free_guidance + else latent_model_input + ) + latent_model_input = self.scheduler.scale_model_input(latent_model_input, t) + + prompt_embeds_input = torch.cat([prompt_embeds] * vb_size) + add_text_embeds_input = torch.cat([add_text_embeds] * vb_size) + add_time_ids_input = torch.cat([add_time_ids] * vb_size) + + # predict the noise residual + added_cond_kwargs = {"text_embeds": add_text_embeds_input, "time_ids": add_time_ids_input} + noise_pred = self.unet( + latent_model_input, + t, + encoder_hidden_states=prompt_embeds_input, + cross_attention_kwargs=cross_attention_kwargs, + added_cond_kwargs=added_cond_kwargs, + return_dict=False, + )[0] + + if do_classifier_free_guidance: + noise_pred_uncond, noise_pred_text = noise_pred[::2], noise_pred[1::2] + noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond) + + if do_classifier_free_guidance and guidance_rescale > 0.0: + # Based on 3.4. in https://arxiv.org/pdf/2305.08891.pdf + noise_pred = rescale_noise_cfg(noise_pred, noise_pred_text, guidance_rescale=guidance_rescale) + + # compute the previous noisy sample x_t -> x_t-1 + self.scheduler._init_step_index(t) + latents_denoised_batch = self.scheduler.step( + noise_pred, t, latents_for_view, **extra_step_kwargs, return_dict=False)[0] + + # extract value from batch + for latents_view_denoised, (h, w) in zip( + latents_denoised_batch.chunk(vb_size), batch_view + ): + value_global[:, :, h::current_scale_num, w::current_scale_num] += latents_view_denoised + count_global[:, :, h::current_scale_num, w::current_scale_num] += 1 + + c2 = cosine_factor ** cosine_scale_2 + + value_global = value_global[: ,:, h_pad:, w_pad:] + + value += value_global * c2 + count += torch.ones_like(value_global) * c2 + + ########################################################### + + latents = torch.where(count > 0, value / count, value) + + # call the callback, if provided + if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0): + progress_bar.update() + if callback is not None and i % callback_steps == 0: + step_idx = i // getattr(self.scheduler, "order", 1) + callback(step_idx, t, latents) + + ######################################################################################################################################### + + latents = (latents - latents.mean()) / latents.std() * anchor_std + anchor_mean + if self.lowvram: + latents = latents.cpu() + torch.cuda.empty_cache() + if output_type != "latent": + # make sure the VAE is in float32 mode, as it overflows in float16 + needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast + + if self.lowvram: + needs_upcasting = False # use madebyollin/sdxl-vae-fp16-fix in lowvram mode! + self.unet.cpu() + self.vae.to(device) + + if needs_upcasting: + self.upcast_vae() + latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype) + + shared.log.debug(f'DemoFusion: phase={current_scale_num} decoding') + if multi_decoder: + image = self.tiled_decode(latents, current_height, current_width) + else: + image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0] + + # cast back to fp16 if needed + if needs_upcasting: + self.vae.to(dtype=torch.float16) + image = self.image_processor.postprocess(image, output_type=output_type) + output_images.append(image[0]) + else: + image = latents + output_images.append(image) + + # Offload all models + self.maybe_free_model_hooks() + output = ImagePipelineOutput(images=output_images) + return output + + # Overrride to properly handle the loading and unloading of the additional text encoder. + def load_lora_weights(self, pretrained_model_name_or_path_or_dict: Union[str, Dict[str, torch.Tensor]], **kwargs): # pylint: disable=arguments-differ + # We could have accessed the unet config from `lora_state_dict()` too. We pass + # it here explicitly to be able to tell that it's coming from an SDXL + # pipeline. + + # Remove any existing hooks. + if is_accelerate_available() and is_accelerate_version(">=", "0.17.0.dev0"): + from accelerate.hooks import AlignDevicesHook, CpuOffload, remove_hook_from_module + else: + raise ImportError("Offloading requires `accelerate v0.17.0` or higher.") + + is_model_cpu_offload = False + is_sequential_cpu_offload = False + recursive = False + for _, component in self.components.items(): + if isinstance(component, torch.nn.Module): + if hasattr(component, "_hf_hook"): + is_model_cpu_offload = isinstance(component._hf_hook, CpuOffload) # pylint: disable=protected-access + is_sequential_cpu_offload = isinstance(component._hf_hook, AlignDevicesHook) # pylint: disable=protected-access + shared.log.info("Accelerate hooks detected. Since you have called `load_lora_weights()`, the previous hooks will be first removed. Then the LoRA parameters will be loaded and the hooks will be applied again.") + recursive = is_sequential_cpu_offload + remove_hook_from_module(component, recurse=recursive) + state_dict, network_alphas = self.lora_state_dict( + pretrained_model_name_or_path_or_dict, + unet_config=self.unet.config, + **kwargs, + ) + self.load_lora_into_unet(state_dict, network_alphas=network_alphas, unet=self.unet) + + text_encoder_state_dict = {k: v for k, v in state_dict.items() if "text_encoder." in k} + if len(text_encoder_state_dict) > 0: + self.load_lora_into_text_encoder( + text_encoder_state_dict, + network_alphas=network_alphas, + text_encoder=self.text_encoder, + prefix="text_encoder", + lora_scale=self.lora_scale, + ) + + text_encoder_2_state_dict = {k: v for k, v in state_dict.items() if "text_encoder_2." in k} + if len(text_encoder_2_state_dict) > 0: + self.load_lora_into_text_encoder( + text_encoder_2_state_dict, + network_alphas=network_alphas, + text_encoder=self.text_encoder_2, + prefix="text_encoder_2", + lora_scale=self.lora_scale, + ) + + # Offload back. + if is_model_cpu_offload: + self.enable_model_cpu_offload() + elif is_sequential_cpu_offload: + self.enable_sequential_cpu_offload() + + def _remove_text_encoder_monkey_patch(self): + self._remove_text_encoder_monkey_patch_classmethod(self.text_encoder) + self._remove_text_encoder_monkey_patch_classmethod(self.text_encoder_2) + + +### Script definition + +class Script(scripts.Script): + def title(self): + return 'DemoFusion' + + def show(self, is_img2img): + return not is_img2img if shared.backend == shared.Backend.DIFFUSERS else False + + # return signature is array of gradio components + def ui(self, _is_img2img): + with gr.Row(): + cosine_scale_1 = gr.Slider(minimum=0, maximum=5, step=0.1, value=3, label="Cosine scale 1") + cosine_scale_2 = gr.Slider(minimum=0, maximum=5, step=0.1, value=1, label="Cosine scale 2") + cosine_scale_3 = gr.Slider(minimum=0, maximum=5, step=0.1, value=1, label="Cosine scale 3") + with gr.Row(): + view_batch_size = gr.Slider(minimum=4, maximum=32, step=4, value=8, label="Denoising batch size") + sigma = gr.Slider(minimum=0.1, maximum=1, step=0.1, value=0.8, label="Sigma") + stride = gr.Slider(minimum=8, maximum=96, step=8, value=64, label="Stride") + with gr.Row(): + multi_decoder = gr.Checkbox(label="Multi decoder", value=True) + return [cosine_scale_1, cosine_scale_2, cosine_scale_3, sigma, view_batch_size, stride, multi_decoder] + + def run(self, p: processing.StableDiffusionProcessing, cosine_scale_1, cosine_scale_2, cosine_scale_3, sigma, view_batch_size, stride, multi_decoder): # pylint: disable=arguments-differ + c = shared.sd_model.__class__.__name__ if shared.sd_model is not None else '' + if c != 'StableDiffusionXLPipeline': + shared.log.warning(f'DemoFusion: pipeline={c} required=StableDiffusionXLPipeline') + return None + p.task_args['cosine_scale_1'] = cosine_scale_1 + p.task_args['cosine_scale_2'] = cosine_scale_2 + p.task_args['cosine_scale_3'] = cosine_scale_3 + p.task_args['sigma'] = sigma + p.task_args['view_batch_size'] = view_batch_size + p.task_args['stride'] = stride + p.task_args['multi_decoder'] = multi_decoder + p.task_args['output_type'] = 'np' + p.task_args['low_vram'] = True + shared.log.debug(f'DemoFusion: {p.task_args}') + old_pipe = shared.sd_model + new_pipe = DemoFusionSDXLPipeline( + vae = shared.sd_model.vae, + text_encoder=shared.sd_model.text_encoder, + text_encoder_2=shared.sd_model.text_encoder_2, + tokenizer=shared.sd_model.tokenizer, + tokenizer_2=shared.sd_model.tokenizer_2, + unet=shared.sd_model.unet, + scheduler=shared.sd_model.scheduler, + force_zeros_for_empty_prompt=shared.opts.diffusers_force_zeros, + ) + new_pipe.sd_checkpoint_info = shared.sd_model.sd_checkpoint_info # pylint: disable=attribute-defined-outside-init + new_pipe.sd_model_hash = shared.sd_model.sd_model_hash # pylint: disable=attribute-defined-outside-init + new_pipe.sd_model_checkpoint = shared.sd_model.sd_checkpoint_info.filename # pylint: disable=attribute-defined-outside-init + new_pipe.is_sdxl = True # pylint: disable=attribute-defined-outside-init + new_pipe.is_sd2 = False # pylint: disable=attribute-defined-outside-init + new_pipe.is_sd1 = False # pylint: disable=attribute-defined-outside-init + shared.sd_model = new_pipe + if not ((shared.opts.diffusers_model_cpu_offload or shared.cmd_opts.medvram) or (shared.opts.diffusers_seq_cpu_offload or shared.cmd_opts.lowvram)): + shared.sd_model.to(shared.device) + sd_models.set_diffuser_options(shared.sd_model, vae=None, op='model') + shared.log.debug(f'DemoFusion create: pipeline={shared.sd_model.__class__.__name__}') + processed = processing.process_images(p) + shared.sd_model = old_pipe + return processed