Custom Attenuation shader

// Shader created with Shader Forge v1.25
// Shader Forge (c) Neat Corporation / Joachim Holmer - http://www.acegikmo.com/shaderforge/
// Note: Manually altering this data may prevent you from opening it in Shader Forge
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Shader "Shader Forge/CustomAtten" {
    Properties {
        _Diffuse ("Diffuse", 2D) = "white" {}
        _Color ("Color", Color) = (0.5,0.5,0.5,1)
        _Gloss ("Gloss", Range(0, 1)) = 0.5
        _SpecColor ("Spec Color", Color) = (1,1,1,1)
        _AttenRamp ("AttenRamp", 2D) = "white" {}
    }
    SubShader {
        Tags {
            "RenderType"="Opaque"
        }
        Pass {
            Name "FORWARD"
            Tags {
                "LightMode"="ForwardBase"
            }


            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define UNITY_PASS_FORWARDBASE
            #include "UnityCG.cginc"
            #include "AutoLight.cginc"
            #include "Lighting.cginc"
            #pragma multi_compile_fwdbase_fullshadows
            #pragma multi_compile_fog
            #pragma exclude_renderers d3d11_9x xbox360 xboxone ps3 ps4 psp2
            #pragma target 3.0
            uniform sampler2D _Diffuse; uniform float4 _Diffuse_ST;
            uniform float4 _Color;
            uniform float _Gloss;
            uniform sampler2D _AttenRamp; uniform float4 _AttenRamp_ST;
            struct VertexInput {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float2 texcoord0 : TEXCOORD0;
            };
            struct VertexOutput {
                float4 pos : SV_POSITION;
                float2 uv0 : TEXCOORD0;
                float4 posWorld : TEXCOORD1;
                float3 normalDir : TEXCOORD2;
                LIGHTING_COORDS(3,4)
                UNITY_FOG_COORDS(5)
            };
            VertexOutput vert (VertexInput v) {
                VertexOutput o = (VertexOutput)0;
                o.uv0 = v.texcoord0;
                o.normalDir = UnityObjectToWorldNormal(v.normal);
                o.posWorld = mul(_Object2World, v.vertex);
                float3 lightColor = _LightColor0.rgb;
                o.pos = mul(UNITY_MATRIX_MVP, v.vertex );
                UNITY_TRANSFER_FOG(o,o.pos);
                TRANSFER_VERTEX_TO_FRAGMENT(o)
                return o;
            }
            float4 frag(VertexOutput i) : COLOR {
                i.normalDir = normalize(i.normalDir);
                float3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
                float3 normalDirection = i.normalDir;
                float3 lightDirection = normalize(_WorldSpaceLightPos0.xyz);
                float3 lightColor = _LightColor0.rgb;
                float3 halfDirection = normalize(viewDirection+lightDirection);
////// Lighting:
                float attenuation = LIGHT_ATTENUATION(i);
////// Emissive:
                float4 _Diffuse_var = tex2D(_Diffuse,TRANSFORM_TEX(i.uv0, _Diffuse));
                float3 node_544 = (_Diffuse_var.rgb*_Color.rgb); // Diffuse Color
                float3 emissive = (node_544*UNITY_LIGHTMODEL_AMBIENT.rgb);
                float node_7782 = max(0,dot(lightDirection,normalDirection)); // Lambert

                //Custom Attenuation
                float2 node_51 = float2(attenuation,0.0);
                float4 _AttenRamp_var = tex2D(_AttenRamp,TRANSFORM_TEX(node_51, _AttenRamp));

                float3 finalColor = emissive + (((node_544*node_7782)+(node_7782*pow(max(0,dot(normalDirection,halfDirection)),exp2(lerp(1,11,_Gloss)))*_SpecColor.rgb))*_LightColor0.rgb*_AttenRamp_var.r);
                fixed4 finalRGBA = fixed4(finalColor,1);
                UNITY_APPLY_FOG(i.fogCoord, finalRGBA);
                return finalRGBA;
            }
            ENDCG
        }
        Pass {
            Name "FORWARD_DELTA"
            Tags {
                "LightMode"="ForwardAdd"
            }
            Blend One One


            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define UNITY_PASS_FORWARDADD
            #include "UnityCG.cginc"
            #include "AutoLight.cginc"
            #include "Lighting.cginc"
            #pragma multi_compile_fwdadd_fullshadows
            #pragma multi_compile_fog
            #pragma exclude_renderers d3d11_9x xbox360 xboxone ps3 ps4 psp2
            #pragma target 3.0
            uniform sampler2D _Diffuse; uniform float4 _Diffuse_ST;
            uniform float4 _Color;
            uniform float _Gloss;
            uniform sampler2D _AttenRamp; uniform float4 _AttenRamp_ST;
            struct VertexInput {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float2 texcoord0 : TEXCOORD0;
            };
            struct VertexOutput {
                float4 pos : SV_POSITION;
                float2 uv0 : TEXCOORD0;
                float4 posWorld : TEXCOORD1;
                float3 normalDir : TEXCOORD2;
                LIGHTING_COORDS(3,4)
                UNITY_FOG_COORDS(5)
            };
            VertexOutput vert (VertexInput v) {
                VertexOutput o = (VertexOutput)0;
                o.uv0 = v.texcoord0;
                o.normalDir = UnityObjectToWorldNormal(v.normal);
                o.posWorld = mul(_Object2World, v.vertex);
                float3 lightColor = _LightColor0.rgb;
                o.pos = mul(UNITY_MATRIX_MVP, v.vertex );
                UNITY_TRANSFER_FOG(o,o.pos);
                TRANSFER_VERTEX_TO_FRAGMENT(o)
                return o;
            }
            float4 frag(VertexOutput i) : COLOR {
                i.normalDir = normalize(i.normalDir);
                float3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
                float3 normalDirection = i.normalDir;
                float3 lightDirection = normalize(lerp(_WorldSpaceLightPos0.xyz, _WorldSpaceLightPos0.xyz - i.posWorld.xyz,_WorldSpaceLightPos0.w));
                float3 lightColor = _LightColor0.rgb;
                float3 halfDirection = normalize(viewDirection+lightDirection);
////// Lighting:
                float attenuation = LIGHT_ATTENUATION(i);
                float4 _Diffuse_var = tex2D(_Diffuse,TRANSFORM_TEX(i.uv0, _Diffuse));
                float3 node_544 = (_Diffuse_var.rgb*_Color.rgb); // Diffuse Color
                float node_7782 = max(0,dot(lightDirection,normalDirection)); // Lambert

                //Custom Attenuation
                float2 node_51 = float2(attenuation,0.0);
                float4 _AttenRamp_var = tex2D(_AttenRamp,TRANSFORM_TEX(node_51, _AttenRamp));

                float3 finalColor = (((node_544*node_7782)+(node_7782*pow(max(0,dot(normalDirection,halfDirection)),exp2(lerp(1,11,_Gloss)))*_SpecColor.rgb))*_LightColor0.rgb*_AttenRamp_var.r);
                fixed4 finalRGBA = fixed4(finalColor * 1,0);
                UNITY_APPLY_FOG(i.fogCoord, finalRGBA);
                return finalRGBA;
            }
            ENDCG
        }
    }
    FallBack "Diffuse"
    CustomEditor "ShaderForgeMaterialInspector"
}