al image generation RePaint inpainting Score SDE VE unconditional image generation Self-Attention Guidance text2image Semantic Guidance text2image Shap-E text-to-3D, image-to-3D Spectrogram Diffusion  Stable Diffusion text2image, image2image, depth2image, inpainting, image variation, latent upscaler, super-resolution Stable Diffusion Model Editing model editing Stable Diffusion XL text2image, image2image, inpainting Stable Diffusion XL Turbo te