duck

Shader "Custom Damage/Specular Splat Damage Overlay" {
    Properties {

        _MainTex ("Main Texture (RGB)", 2D) = "white" {}
        _DamageReveal ("Damage Reveal (RGB)", 2D) = "white" {}
        _DamageMask ("Damage Mask", 2D) = "white" {}
        _Color ("Main Color", Color) = (1,1,1,1)
        _SpecColor ("Specular Color", Color) = (0.5, 0.5, 0.5, 1)
        _Shininess ("Shininess", Range (0.01, 1)) = 0.078125

    }
    SubShader {
        Tags { "RenderType"="Opaque" }
        LOD 300

        CGPROGRAM
        #pragma surface surf BlinnPhong

        sampler2D _MainTex;
        sampler2D _DamageReveal;
        sampler2D _DamageMask;
        float4 _Color;
        float _Shininess;

        struct Input {
            float2 uv_MainTex;
            float2 uv_DamageReveal;
            float2 uv_DamageMask;
        };

        void surf (Input IN, inout SurfaceOutput o) {

            half4 main = tex2D (_MainTex, IN.uv_MainTex);
            half4 damageReveal = tex2D (_DamageReveal, IN.uv_DamageReveal);
            half4 damageMask = tex2D (_DamageMask, IN.uv_DamageMask);

            half4 u = lerp(main,damageReveal,(1-damageMask.g));
            o.Albedo = u.rgb * _Color.rgb * damageMask.r;
            o.Gloss = u.a;
            o.Alpha = u.a * _Color.a;
            o.Specular = _Shininess;


        }
        ENDCG
    }
    FallBack "Diffuse"
}