Dither Unity textures to save memory

Thu, 05 Jan 2017 00:00:00 +0700

The project code is here: https://github.com/minhhh/unity-texture-dither

In many cases, we want to dither textures so that we can use more compact texture import format to save memory. This project aims to provide a workflow for dithering imported texture automatically, based on settings that can be swapped easily. Note that this has nothing to do with using dithering to achieve some artistic goal or the real time dithering effect to solve color banding problem.

The algorithms are explained in a blog post by Tanner Helland and the reference implementations are taken from https://github.com/mcraiha/Dithering-Unity3d with some slight modification.

Usage

To dither images, put them in a folder whose name ended with Dither. Then click on the folder and Reimport.

The dither setting, i.e. algorithm and output color space is defined in ScriptableObjects DitheringAlgorithmSetting. You can find them in the Assets folder. To change dither setting, select Settings > TextureDitherSetting and change the field Dither Algorithm Setting accordingly.

Supported algorithms are:

Atkinson
Burkes
FloydSteinberg
JarvisJudiceNinke
Sierra
SierraLite
SierraTwoRow
Stucki
No Dithering (for testing purpose)

Supported color spaces are:

RGBA4444
Websafe
TrueColor (for testing purpose)

Dither on Huy Minh Ha

Dither Unity textures to save memory

Usage