Unity3D Shader UV 滚动之ScrollingMulti

Shader "Custom/ScrollingMulti" 
{
Properties 
{
_Color ("Main Color", Color) = (1,1,1,1)
_ScrollU1 ("Scroll U1", Float) = 1
_ScrollV1 ("Scroll V1", Float) = 1
_ScrollU2 ("Scroll U2", Float) = 1
_ScrollV2 ("Scroll V2", Float) = 1
_Boost ("Boost", Float) = 1
_Tex1 ("Base (RGB) Trans (A) 1", 2D) = "white" {}
_Tex2 ("Base (RGB) Trans (A) 2", 2D) = "white" {}
}


SubShader 
{
Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
LOD 200


CGPROGRAM
#pragma surface surf Lambert alpha


sampler2D _Tex1;
sampler2D _Tex2;
fixed4 _Color;
float _ScrollU1;
float _ScrollV1;
float _ScrollU2;
float _ScrollV2;
float _Boost;


struct Input {
float2 uv_Tex1;
float4 color : COLOR;
};


void surf (Input IN, inout SurfaceOutput o) 
{
fixed4 c1 = tex2D(_Tex1, IN.uv_Tex1 + (_Time * float2(_ScrollU1, _ScrollV1)));
fixed4 c2 = tex2D(_Tex2, IN.uv_Tex1 + (_Time * float2(_ScrollU2, _ScrollV2)));
fixed4 c = c1 * c2 * _Color * IN.color * _Boost;
o.Emission = c.rgb;
o.Alpha = c.a;
}
ENDCG
}


}