This material node is converting a shader to a monochrome color output with dithering.
Colors, resolution, ratio of the image and number of steps are customizable. It is also possible to select a pattern used for the dithering. There is 6 different patterns you can select. It is possible to add your own pattern as a 8x8 greyscale texture in the dithering node.
It is recommanded to sync the resolution and the ratio with the one of the project.