Custom EDGE DETECT - Substance Designer Tool

This is my implementation of Edge Detect in Pixel Processor, Substance Designer. It utilizes quantisation as filtering.

- Real edge detection based on Threshold
- Works on Gradient and high-frequency detailed images
- Fast, up to 20x on higher resolutions
- Edge width down to 1 pixel
- 2 modes of detection
- Constant edge width, it's not image aspect ratio dependent