NGFilters: Procedural Filters (Preset Window)

What is NGFilters?

NGFilters (Node Graph Filters) is a preset window for storing procedural post-processing filters. Unlike materials, which create new textures from scratch, filters take existing layer or object data, modify it, and return it back.

How it works

Filters are ideal for mass correction. For example, you can create a filter that makes colors more contrasting, adds blur, or inverts channels.
The main feature of a filter graph is that it actively uses nodes from the Layer category (e.g., inLayerColor or inLayerFloat) to read the current state, modify it using mathematical or color correction nodes (the Color category), and pass it to outAlbedoColor or another output.

Usage Examples

Typical tasks for NGFilters:

• Color Correction: Adjusting brightness, contrast, hue (HSV) for the entire layer.
• Sharpen / Blur: Mathematical manipulations with pixels.
• Stylization effects: Posterization or converting the image to a halftone raster.

Creating your own NGFilter

1. Open the Node Editor.
2. Add an input node from the previous layer (e.g., inLayerColor).
3. Add modification nodes (e.g., BrightnessContrast or the mathematical node Multiply).
4. Connect the modified result to an output node (e.g., outAlbedoColor).
5. Save as a preset in the Filters category. The preset will be saved in UserPrefs\NodeGraphs\NGFilters and will become available in the window.