[TOC]
http://candycat1992.github.io/2016/11/28/blend-terrain-textures/
http://candycat1992.github.io/2016/11/29/texture-repetition/
1.拿噪声纹理得到随机tile的随机方向 和 随机平移
2.模糊交界处
Repeate
texturenorepeate1
texturenorepeate2
https://github.com/kb824999404/Unity_Shader/blob/master/Shader/Test/Water/SimpleWater.shader