需要的效果

最终实现的效果大概如下:

4个贴图上去

这里随便放一个切分的图。

Shader代码如下

直接上代码:

// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)

// Unlit shader. Simplest possible textured shader.
// - no lighting
// - no lightmap support
// - no per-material color

Shader "Unlit/TextureMy" {
   
Properties {
   
    _MainTex ("Base (RGB)", 2D) = "white" {
   }
    _MainTex0 ("Base0 (RGB)", 2D) = "white" {
   }
    _MainTex1 ("Base1 (RGB)", 2D) = "white" {
   }
    _MainTex2 ("Base2 (RGB)", 2D) = "white" {
   }
    _MainTex3 ("Base3 (RGB)", 2D) = "white" {
   }
}