A usage method summerized from Github.

1. The Promax model on huggingface is required to use the Inpaint function.

https://huggingface.co/xinsir/controlnet-union-sdxl-1.0/blob/main/diffusion_pytorch_model_promax.safetensors

2. The images generated by Inpaint preprocessing are RGBA and need to be converted to RGB through other nodes.

3. If a broadcast error (output with shape [1, 1280] doesn't match the broadcast shape [2, 1280]) occurs, ComfyUI needs to be restarted.

2 and 3 may be bugs, and they will be able to be used normally after being corrected in the future.