Unpaint is a C++ implementation of Stable Diffusion for Windows and Xbox, offering a self-contained, Python-free AI image generation tool. It targets developers and power users seeking to integrate image synthesis into applications or run it directly on Windows/Xbox, benefiting from a simplified deployment and smaller footprint compared to Python-based alternatives.

How It Works

The application leverages a C++ Stable Diffusion library that utilizes DirectML for hardware acceleration, supporting NVIDIA and AMD GPUs. This approach avoids Python dependencies, allowing for a single-process execution with a compact (~30MB) distribution size, excluding model weights. It supports text-to-image, image-to-image, inpainting, and ControlNet pipelines.

Quick Start & Requirements

• Install from Microsoft Store or download .msix and .crt files from releases.
• Requires Windows 10/11 and a DirectML-capable GPU (NVIDIA, AMD recommended).
• Model weights (~2.5GB per model) must be downloaded separately.
• Building from source requires Visual Studio 2022 with specific C++ workloads.

Highlighted Details

• Fully C++ implementation, no Python dependencies.
• Supports txt2img, img2img, inpainting, and ControlNet.
• Optimized for DirectML, with ongoing improvements for ONNX pipelines.
• Available on Microsoft Store and as a standalone installer.

Maintenance & Community

• Project actively maintained, with recent updates for Xbox demonstration.
• Community support and issue reporting encouraged via GitHub issues.

Licensing & Compatibility

• License details not explicitly stated in the provided README.
• Compatibility for commercial use or closed-source linking is not specified.

Limitations & Caveats

ONNX-based pipelines may not yet match the optimization levels of PyTorch with CUDA. Installation of test builds requires installing a self-signed certificate or resigning the package.