Duotone

Duotone is a simple image stylization effect for Unity URP.

It provides the following two features:

• Duotone posterization - It reconstructs an input image with two colors (duotone). It also provides two extra peak colors (dark/highlight) and dithering options.
• Contour lines - It draws contour lines on object edges. To use this mode, you must use the Duotone Surface shader to embed normal/depth information into the color buffer.

System requirements

• Unity 2022.3 LTS or later

How to install

Follow those instructions to set up the scoped registry. Then, you can install the Duotone package via Package Manager.

How to set up

First, you must add the Duotone Feature to the URP Renderer Features list. Please check the manual page if you haven't used renderer features with URP.

Unlike the other renderer features, the Duotone Feature doesn't provide any property. You can control the effect using the Duotone Controller component.

You should add this controller component to cameras to activate the effect.