Extend Online Maps to create a horizon (Page 3 of 3)

Shader "Infinity Code/Online Maps/Horizon Fade Shader"
{
    Properties
    {
        _Color("Main Color", Color) = (1,1,1,1)
        _MainTex("Base (RGB) Trans (A)", 2D) = "white" {}
        _OverlayBackTex("Overlay Back Texture", 2D) = "black" {}
        _OverlayBackAlpha("Overlay Back Alpha", Range(0, 1)) = 1
        _TrafficTex("Traffic Texture", 2D) = "black" {}
        _OverlayFrontTex("Overlay Front Texture", 2D) = "black" {}
        _OverlayFrontAlpha("Overlay Front Alpha", Range(0, 1)) = 1
    }

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

        CGPROGRAM
#pragma surface surf Lambert alpha

        sampler2D _MainTex;

        struct Input
        {
            float2 uv_MainTex;
            float3 worldPos;
        };

        void surf(Input IN, inout SurfaceOutput o)
        {
            float tilesetSizeX = 1024;
            float tilesetSizeY = 1024;
            float startFadeDist = 2600;
            float fadeRange = 1024;

            float3 center = float3(tilesetSizeX / -2, 0, tilesetSizeY / 2);

            float3 wp = mul(unity_WorldToObject, float4(IN.worldPos, 1)).xyz;
            float3 dist = center - float3(wp.x, 0, wp.z);
            float len = length(dist);
            float scale = (len - startFadeDist) / fadeRange;

            o.Alpha = saturate(1 - scale);

            fixed4 c = tex2D(_MainTex, IN.uv_MainTex);
            o.Albedo = c.rgb;
        }
        ENDCG
    }

    Fallback "Transparent/Cutout/Diffuse"
}