Outlined Diffuse 3

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Regular Diffuse rendering with a toon-style outline. Compatible with Unity 3.x

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Shader "Outlined/Diffuse" {
	Properties {
		_Color ("Main Color", Color) = (.5,.5,.5,1)
		_OutlineColor ("Outline Color", Color) = (0,0,0,1)
		_Outline ("Outline width", Range (.002, 0.03)) = .005
		_MainTex ("Base (RGB)", 2D) = "white" { }
	}
	
CGINCLUDE
#include "UnityCG.cginc"

struct appdata {
	float4 vertex : POSITION;
	float3 normal : NORMAL;
};

struct v2f {
	float4 pos : POSITION;
	float4 color : COLOR;
};

uniform float _Outline;
uniform float4 _OutlineColor;

v2f vert(appdata v) {
	// just make a copy of incoming vertex data but scaled according to normal direction
	v2f o;
	o.pos = mul(UNITY_MATRIX_MVP, v.vertex);

	float3 norm   = mul ((float3x3)UNITY_MATRIX_IT_MV, v.normal);
	float2 offset = TransformViewToProjection(norm.xy);

	o.pos.xy += offset * o.pos.z * _Outline;
	o.color = _OutlineColor;
	return o;
}
ENDCG

	SubShader {
		//Tags {"Queue" = "Geometry+100" }
CGPROGRAM
#pragma surface surf Lambert

sampler2D _MainTex;
fixed4 _Color;

struct Input {
	float2 uv_MainTex;
};

void surf (Input IN, inout SurfaceOutput o) {
	fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
	o.Albedo = c.rgb;
	o.Alpha = c.a;
}
ENDCG

		// note that a vertex shader is specified here but its using the one above
		Pass {
			Name "OUTLINE"
			Tags { "LightMode" = "Always" }
			Cull Front
			ZWrite On
			ColorMask RGB
			Blend SrcAlpha OneMinusSrcAlpha
			//Offset 50,50

			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			half4 frag(v2f i) :COLOR { return i.color; }
			ENDCG
		}
	}
	
	SubShader {
CGPROGRAM
#pragma surface surf Lambert

sampler2D _MainTex;
fixed4 _Color;

struct Input {
	float2 uv_MainTex;
};

void surf (Input IN, inout SurfaceOutput o) {
	fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
	o.Albedo = c.rgb;
	o.Alpha = c.a;
}
ENDCG

		Pass {
			Name "OUTLINE"
			Tags { "LightMode" = "Always" }
			Cull Front
			ZWrite On
			ColorMask RGB
			Blend SrcAlpha OneMinusSrcAlpha

			CGPROGRAM
			#pragma vertex vert
			#pragma exclude_renderers gles xbox360 ps3
			ENDCG
			SetTexture [_MainTex] { combine primary }
		}
	}
	
	Fallback "Diffuse"
}
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