Demo 60 - Fur shader

Shader "Custom/FurShader"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _FurTex ("Fur pattern", 2D) = "white" {}
        _Diffuse ("Diffuse value", Range(0, 1)) = 1

        _FurLength ("Fur length", Range(0.0, 1)) = 0.5
        _CutOff ("Alpha cutoff", Range(0, 1)) = 0.5
        _Blur ("Blur", Range(0, 1)) = 0.5
        _Thickness ("Thickness", Range(0, 0.5)) = 0
    }

    CGINCLUDE

        fixed _Diffuse;

        inline fixed4 LambertDiffuse(float3 worldNormal)
        {
            float3 lightDir = normalize(_WorldSpaceLightPos0.xyz);
            float NdotL = max(0, dot(worldNormal, lightDir));
            return NdotL * _Diffuse;
        }

    ENDCG

    SubShader
    {
        Tags { "RenderType"="Transparent" "IgnoreProjector"="True" "Queue"="Transparent"}
        ZWrite Off
        Blend SrcAlpha OneMinusSrcAlpha
        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma target 3.0

            #include "UnityCG.cginc"

            struct v2f
            {
                float4 pos : SV_POSITION;
                float2 uv : TEXCOORD0;
                fixed4 dif : COLOR;
            };

            sampler2D _MainTex;
            float4 _MainTex_ST;

            v2f vert (appdata_base v)
            {
                v2f o;
                o.pos = UnityObjectToClipPos(v.vertex);
                o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
                o.dif = LambertDiffuse(v.normal);
                return o;
            }

            fixed4 frag (v2f i) : SV_Target
            {
                fixed4 col = tex2D(_MainTex, i.uv);
                col.rgb *= i.dif;
                return col;
            }
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.05
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.10
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.15
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.20
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.25
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.30
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.35
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.40
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.45
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.50
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.55
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.60
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.65
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.70
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.75
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.80
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.85
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.90
            #include "FurHelper.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define FURSTEP 0.95
            #include "FurHelper.cginc"
            ENDCG
        }
    }
}