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Shader "Custom/Fog"{Properties{_Color("Color", Color) = (1,1,1,1)_MainTex("Texture", 2D) = "white" {}_FogColor("Fog Color", Color) = (0.3, 0.4, 0.7, 1.0)_FogStart("Fog Start", float) = 0_FogEnd("Fog End", float) = 0}SubShader{Tags{ "RenderType" = "Opaque" }CGPROGRAM#pragma surface surf Lambert finalcolor:mycolor vertex:myvertstruct Input{float2 uv_MainTex;half fog;};fixed4 _Color;fixed4 _FogColor;half _FogStart;half _FogEnd;sampler2D _MainTex;void myvert(inout appdata_full v, out Input data){UNITY_INITIALIZE_OUTPUT(Input,data);float4 pos = mul(unity_ObjectToWorld, v.vertex).xyzw;data.fog = saturate((_FogStart - pos.y) / (_FogStart - _FogEnd));}void mycolor(Input IN, SurfaceOutput o, inout fixed4 color){fixed3 fogColor = _FogColor.rgb;fixed3 tintColor = _Color.rgb;#ifdef UNITY_PASS_FORWARDADDfogColor = 0;#endifcolor.rgb = lerp(color.rgb * tintColor, fogColor, IN.fog);}void surf(Input IN, inout SurfaceOutput o){o.Albedo = tex2D(_MainTex, IN.uv_MainTex).rgb;}ENDCG}Fallback "Diffuse"}