CustomOutline-CameraIndependent.shader

// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "Outlined/Custom Camera Independent" {
	Properties {
		_Color ("Main Color", Color) = (.5,.5,.5,1)
		_OutlineColor ("Outline Color", Color) = (0,0,0,1)
		_Outline2 ("Outline width", Range (0, 1)) = .1
		_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 _Outline2;
uniform float4 _OutlineColor;
 
v2f vert(appdata v) {
	// just make a copy of incoming vertex data but scaled according to normal direction
	v2f o;

	//Camera position in world
	float3 targetPos = _WorldSpaceCameraPos;

	//Object position in world
	float3 objectPos = mul (unity_ObjectToWorld, v.vertex).xyz;

	//Vertex offset from center of the object
	float3 offset = v.vertex.xyz;

	//Distance from the object to the camera
	float dist = distance(objectPos, targetPos + offset);

	//Forward vector of the camera
	float3 viewDir = UNITY_MATRIX_IT_MV[2].xyz;

	//Vector between vertex and offseted camera pos
	float3 distVec = objectPos - (targetPos + offset);

	//Angle between two vectors
	float angle = distVec - distVec;
	//float angle = atan2(normalize(cross(distVec,viewDir)), dot(distVec,viewDir));

	//Real distance (to the plane 90 degrees to camera forward and object)
	float finalDist = dist * cos(degrees(angle));

	//v.vertex *= ( 2 );
	v.vertex *= finalDist * _Outline2;

	//v.vertex *= -1;

	o.pos = UnityObjectToClipPos(v.vertex);

	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"
}