SUPIR Model Loader (Legacy) Node Documentation

Overview

The SUPIR Model Loader (Legacy) node is part of the ComfyUI-SUPIR extension. It is designed to be utilized in ComfyUI workflows to load SUPIR models for advanced image upscaling and restoration tasks. This node is part of a suite of nodes that wraps the capabilities of the SUPIR system into a more user-friendly format for the ComfyUI interface. The node utilizes pre-trained SUPIR models to enhance image quality with efficient memory usage and broader hardware support.

Functionality

What This Node Does

The SUPIR Model Loader (Legacy) node is responsible for loading the SUPIR models into the ComfyUI environment. It allows users to select and initialize these models which are essential for performing image restoration and upscaling. This node serves as a bridge, enabling users to leverage the advanced upscaling techniques of SUPIR within their workflows.

Special Features

• Legacy Support: This node is labeled as "legacy," meaning it is maintained for backward compatibility with older workflows. However, newer versions of model loader nodes are available that provide enhanced functionalities.
• Model Format Support: The node supports pruned models in the safetensors format, which are optimized for efficient performance.
• Efficient Resource Usage: The node facilitates loading models with reduced memory consumption, making it suitable for use on a variety of hardware configurations.

Inputs

While specific inputs for the SUPIR Model Loader (Legacy) node can vary based on the ComfyUI setup, the typical input expected by this node includes:

• Model Path: The location of the SUPIR model files. These are generally stored in the ComfyUI/models/checkpoints directory. Users must specify the path to the desired model they wish to load.
• SDXL Model: The node also requires a Stable Diffusion XL (SDXL) model, which should be located in the same directory as the SUPIR models.

Outputs

The node does not generate direct visual outputs. Instead, its primary function is to initialize the required models for the other nodes within the SUPIR workflow. As such, the main output is an internally loaded model that can be used by subsequent nodes like the SUPIR Sampler or SUPIR Upscale (Legacy).

Usage in ComfyUI Workflows

The SUPIR Model Loader (Legacy) node is typically used at the beginning of a SUPIR-based image processing workflow. Its role is to prepare and load the necessary models so that other nodes can perform image restoration and upscaling.

1. Integration with Other Nodes: After loading a model with this node, users can connect it to nodes such as SUPIR Sampler, SUPIR Upscale (Legacy), and others for processing the images.
2. Legacy Workflow Compatibility: If you are using an existing setup or workflow, especially those created before the newer model loader nodes were introduced, this node ensures your processes continue to function without modification.

Considerations

• Model Compatibility: Ensure that the models loaded by this node are compatible with your other nodes and use cases. Newer versions of the model loader nodes may offer more features or improved efficiency.
• Resource Requirements: Due to the high resource demand of SUPIR models, ensure that your system meets the memory and processing capabilities required for your specific usage scenario.
• Non-Commercial Use: Be aware that the SUPIR models are intended for non-commercial use only. Usage for commercial purposes requires permission from the authors.

In summary, the SUPIR Model Loader (Legacy) node is crucial for initiating SUPIR processes within ComfyUI, enabling users to harness advanced image enhancement technologies effectively. If transitioning to new workflows, consider reviewing the updated model loader nodes for enhanced capabilities and features.