可以做一些特殊的效果！如物体外观的逐渐变化效果！
Shader "VrorangeShaders/MixTexture" {

Properties {

  _Color ("Main Color", Color) = (1,1,1,1)

  _Texture0 ("Texture0 (RGB)", 2D) = "white" {}

  _Texture1 ("Texture1 (RGB)", 2D) = "white" {}

  _MixValue ("MixValue (Range)",Range(0,1)) = 0.5 

}

SubShader {

  Cull Back

  ZWrite On

  ZTest LEqual

  Tags {"Queue"="Geometry+0" "IgnoreProjector"="False" "RenderType"="Opaque" }

CGPROGRAM

#pragma su**ce surf Lambert

float4 _Color;

sampler2D _Texture0;

sampler2D _Texture1;

float _MixValue;

struct Input {

float2 uv_Texture0;

float2 uv_Texture1;

};

void surf (Input IN, inout Su**ceOutput o){

half4 c0=tex2D (_Texture0, IN.uv_Texture0);

half4 c1=tex2D (_Texture1, IN.uv_Texture1);

c0=c0*_MixValue;

c1=c1*(1-_MixValue);

o.Albedo=(c0+c1)*_Color;

}

ENDCG

} 

FallBack "Diffuse"

}