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| import spaces | |
| from diffusers import ( | |
| StableDiffusionXLPipeline, | |
| EulerDiscreteScheduler, | |
| UNet2DConditionModel, | |
| AutoencoderTiny, | |
| ) | |
| import torch | |
| import os | |
| from huggingface_hub import hf_hub_download | |
| from PIL import Image | |
| import gradio as gr | |
| import time | |
| from safetensors.torch import load_file | |
| import time | |
| import tempfile | |
| from pathlib import Path | |
| # Constants | |
| BASE = "stabilityai/stable-diffusion-xl-base-1.0" | |
| REPO = "ByteDance/SDXL-Lightning" | |
| # 1-step | |
| CHECKPOINT = "sdxl_lightning_2step_unet.safetensors" | |
| taesd_model = "madebyollin/taesdxl" | |
| # { | |
| # "1-Step": ["sdxl_lightning_1step_unet_x0.safetensors", 1], | |
| # "2-Step": ["sdxl_lightning_2step_unet.safetensors", 2], | |
| # "4-Step": ["sdxl_lightning_4step_unet.safetensors", 4], | |
| # "8-Step": ["sdxl_lightning_8step_unet.safetensors", 8], | |
| # } | |
| SFAST_COMPILE = os.environ.get("SFAST_COMPILE", "0") == "1" | |
| SAFETY_CHECKER = os.environ.get("SAFETY_CHECKER", "0") == "1" | |
| USE_TAESD = os.environ.get("USE_TAESD", "0") == "1" | |
| # check if MPS is available OSX only M1/M2/M3 chips | |
| device = torch.device("cuda" if torch.cuda.is_available() else "cpu") | |
| torch_device = device | |
| torch_dtype = torch.float16 | |
| print(f"SAFETY_CHECKER: {SAFETY_CHECKER}") | |
| print(f"SFAST_COMPILE: {SFAST_COMPILE}") | |
| print(f"USE_TAESD: {USE_TAESD}") | |
| print(f"device: {device}") | |
| unet = UNet2DConditionModel.from_config(BASE, subfolder="unet") | |
| # .to( "cuda", torch.float16) | |
| # unet.load_state_dict(load_file(hf_hub_download(REPO, CHECKPOINT), device="cuda")) | |
| unet.load_state_dict(load_file(hf_hub_download(REPO, CHECKPOINT))) | |
| pipe = StableDiffusionXLPipeline.from_pretrained( | |
| BASE, unet=unet, torch_dtype=torch.float16, variant="fp16", safety_checker=False | |
| ) | |
| # .to("cuda") | |
| unet = unet.to(dtype=torch.float16) | |
| if USE_TAESD: | |
| pipe.vae = AutoencoderTiny.from_pretrained( | |
| taesd_model, torch_dtype=torch_dtype, use_safetensors=True | |
| ).to(device) | |
| # Ensure sampler uses "trailing" timesteps. | |
| pipe.scheduler = EulerDiscreteScheduler.from_config( | |
| pipe.scheduler.config, timestep_spacing="trailing" | |
| ) | |
| pipe.set_progress_bar_config(disable=True) | |
| if SAFETY_CHECKER: | |
| from safety_checker import StableDiffusionSafetyChecker | |
| from transformers import CLIPFeatureExtractor | |
| safety_checker = StableDiffusionSafetyChecker.from_pretrained( | |
| "CompVis/stable-diffusion-safety-checker" | |
| ).to(device) | |
| feature_extractor = CLIPFeatureExtractor.from_pretrained( | |
| "openai/clip-vit-base-patch32" | |
| ) | |
| def check_nsfw_images( | |
| images: list[Image.Image], | |
| ) -> tuple[list[Image.Image], list[bool]]: | |
| safety_checker_input = feature_extractor(images, return_tensors="pt").to(device) | |
| has_nsfw_concepts = safety_checker( | |
| images=[images], | |
| clip_input=safety_checker_input.pixel_values.to(torch_device), | |
| ) | |
| return images, has_nsfw_concepts | |
| if SFAST_COMPILE: | |
| from sfast.compilers.diffusion_pipeline_compiler import compile, CompilationConfig | |
| # sfast compilation | |
| config = CompilationConfig.Default() | |
| try: | |
| import xformers | |
| config.enable_xformers = True | |
| except ImportError: | |
| print("xformers not installed, skip") | |
| try: | |
| import triton | |
| config.enable_triton = True | |
| except ImportError: | |
| print("Triton not installed, skip") | |
| # CUDA Graph is suggested for small batch sizes and small resolutions to reduce CPU overhead. | |
| # But it can increase the amount of GPU memory used. | |
| # For StableVideoDiffusionPipeline it is not needed. | |
| config.enable_cuda_graph = True | |
| pipe = compile(pipe, config) | |
| def predict(prompt, seed=1231231): | |
| generator = torch.manual_seed(seed) | |
| last_time = time.time() | |
| results = pipe( | |
| prompt=prompt, | |
| generator=generator, | |
| num_inference_steps=2, | |
| guidance_scale=0.0, | |
| # width=768, | |
| # height=768, | |
| output_type="pil", | |
| ) | |
| print(f"Pipe took {time.time() - last_time} seconds") | |
| if SAFETY_CHECKER: | |
| images, has_nsfw_concepts = check_nsfw_images(results.images) | |
| if any(has_nsfw_concepts): | |
| gr.Warning("NSFW content detected.") | |
| return Image.new("RGB", (512, 512)) | |
| image = results.images[0] | |
| with tempfile.NamedTemporaryFile(suffix=".jpg", delete=False) as tmpfile: | |
| image.save(tmpfile, "JPEG", quality=80, optimize=True, progressive=True) | |
| return Path(tmpfile.name) | |
| css = """ | |
| #container{ | |
| margin: 0 auto; | |
| max-width: 40rem; | |
| } | |
| #intro{ | |
| max-width: 100%; | |
| margin: 0 auto; | |
| } | |
| """ | |
| with gr.Blocks(css=css) as demo: | |
| with gr.Column(elem_id="container"): | |
| gr.Markdown( | |
| """ | |
| # SDXL-Lightning- Text To Image 2-Steps | |
| **Model**: https://huggingface.co/ByteDance/SDXL-Lightning | |
| """, | |
| elem_id="intro", | |
| ) | |
| with gr.Row(): | |
| with gr.Row(): | |
| prompt = gr.Textbox( | |
| placeholder="Insert your prompt here:", scale=5, container=False | |
| ) | |
| generate_bt = gr.Button("Generate", scale=1) | |
| image = gr.Image(type="filepath") | |
| with gr.Accordion("Advanced options", open=False): | |
| seed = gr.Slider( | |
| randomize=True, minimum=0, maximum=12013012031030, label="Seed", step=1 | |
| ) | |
| with gr.Accordion("Run with diffusers"): | |
| gr.Markdown( | |
| """## Running SDXL-Lightning with `diffusers` | |
| ```py | |
| import torch | |
| from diffusers import StableDiffusionXLPipeline, UNet2DConditionModel, EulerDiscreteScheduler | |
| from huggingface_hub import hf_hub_download | |
| from safetensors.torch import load_file | |
| base = "stabilityai/stable-diffusion-xl-base-1.0" | |
| repo = "ByteDance/SDXL-Lightning" | |
| ckpt = "sdxl_lightning_2step_unet.safetensors" # Use the correct ckpt for your step setting! | |
| # Load model. | |
| unet = UNet2DConditionModel.from_config(base, subfolder="unet").to("cuda", torch.float16) | |
| unet.load_state_dict(load_file(hf_hub_download(repo, ckpt), device="cuda")) | |
| pipe = StableDiffusionXLPipeline.from_pretrained(base, unet=unet, torch_dtype=torch.float16, variant="fp16").to("cuda") | |
| # Ensure sampler uses "trailing" timesteps. | |
| pipe.scheduler = EulerDiscreteScheduler.from_config(pipe.scheduler.config, timestep_spacing="trailing") | |
| # Ensure using the same inference steps as the loaded model and CFG set to 0. | |
| pipe("A girl smiling", num_inference_steps=2, guidance_scale=0).images[0].save("output.png") | |
| ``` | |
| """ | |
| ) | |
| inputs = [prompt, seed] | |
| outputs = [image] | |
| generate_bt.click( | |
| fn=predict, inputs=inputs, outputs=outputs, show_progress=False | |
| ) | |
| prompt.input(fn=predict, inputs=inputs, outputs=outputs, show_progress=False) | |
| seed.change(fn=predict, inputs=inputs, outputs=outputs, show_progress=False) | |
| demo.queue() | |
| demo.launch() | |