双面渲染

Shader "Custom/DoubleShader" {
Properties {
_Color ("Main Color", Color) = (1,1,1,1)//Tint Color
_MainTex ("Base (RGB)", 2D) = "white" {}
_MainTex_2 ("Base (RGB)", 2D) = "white" {}
}

SubShader {
Tags { "RenderType"="Opaque" }
LOD 100

Pass {  
    Cull Front  
    Lighting Off  
    SetTexture [_MainTex] { combine texture }   
    SetTexture [_MainTex]  
    {  
        ConstantColor [_Color]  
        Combine Previous * Constant  
    }  
}  

Pass  
{  
    Cull Back  
    Lighting Off  
    SetTexture [_MainTex_2] { combine texture }   
    SetTexture [_MainTex_2]  
    {  
        ConstantColor [_Color]  
        Combine Previous * Constant  
    }  
}  

}
}