Unity3D Shader：夜视

Unity3D Shader：夜视

shader代码：Shader "Unlit/Test"
{
Properties
{
_MainTex ("Texture", 2D) = "white" {}
}
SubShader
{
Tags { "RenderType"="Transparent" "Queue"="AlphaTest" "IgnoreProjector"="True" }
LOD 100Cull Off
ZWrite OffPass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma target 3.0
#pragma multi_compile _ Use_Vigent#include "inc"struct appdata
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};struct v2f
{
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};sampler2D _MainTex;
sampler2D _CameraTex;
float4 _MainTex_ST;
float4 _NVColor;
float4 _TargetColor;
float _BaseLight;
float _Light;v2f vert (appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = TRANSFORM_TEX(v.uv, _MainTex);
return o;
}fixed4 frag (v2f i) : SV_Target
{
fixed4 col = tex2D(_MainTex, i.uv);
fixed4 dif=tex2D(_Camera