Shader & 貝爾矩陣

Reference:http://forum.gamer.com.tw/C.php?bsn=11177&snA=3061&last=1#down

Wiki

Reference:https://en.wikipedia.org/wiki/Ordered_dithering

Reference:https://en.wikipedia.org/wiki/Dither

Complete Description

Reference:http://bisqwit.iki.fi/story/howto/dither/jy/

Asset store :

Simple:  https://www.assetstore.unity3d.com/en/#!/content/6774

Middle:  https://www.assetstore.unity3d.com/en/#!/content/47180

Professional:   https://www.assetstore.unity3d.com/en/#!/content/20329