Awesome

DitherFx

Dev by NullTale<br>

▒░ Dither post effect for Unity Urp, controlled via volume profile </br> ▒░ Works as render feature or a pass for selective post processing VolFx

Features

• custom palettes and patterns
• pattern distribution ​and animation options
• noise mode

can be used to process greenscreen video to pixelart sprites at runtime using palette with alpha channel and VolFx

Part of Artwork Project

• Vhs
• OldMovie
• GradientMap
• Outline
• Flow
• Pixelation
• Ascii
• [Dither]
• ...

Usage

Install via Unity PackageManager

https://github.com/NullTale/DitherFx.git

Works as render feature, some parameters </br> and default volume settings can be configured in the asset.</br>

Tech

The effect works by calculating a deviation for each pixel of the original image from the nearest color,</br> if it is large enough it replaces it with the second closest color from the palette doing it according to the ScreenSpace pattern or random noise. </br>

Dither Power, palette, pattern type and its animation can be customized in VolumeSettings or in RenderFeature settings.</br> All calculations are performed in the fragment shader through hased Lut tables.</br>

To measure a colors of an original image three lut table are used

• palette color - color replacement from the palette
• deviation color - second closest color from the palette
• and measure - distance to the clossets color, used evaluate dithering power

Tables are generated at Runtime when an unknown palette is used for the first time and shared beetween all features.</br>