Outline shader.

Author: przemyslawzaworski

outline.shader

@@ -0,0 +1,68 @@
+Shader "Outline" 
+{
+	Properties 
+	{
+		_Color ("Mesh color", Color) = (0,0,1,1)
+		[Toggle] _enable("Outline enable", Float) = 1
+		_outline_thickness ("Outline thickness", Float ) = 0.05
+		_outline_color ("Outline color", Color) = (0,0,0,1)
+	}
+	SubShader 
+	{
+		Tags {"RenderType"="Opaque"}
+		Pass 
+		{
+			Name "Outline"
+			Cull Front   
+			CGPROGRAM
+			#pragma vertex vertex_shader
+			#pragma fragment pixel_shader
+			#pragma target 3.0
+			
+			float _outline_thickness,_enable;
+			float4 _outline_color;
+            				
+			float4 vertex_shader (float4 vertex:POSITION,float3 normal:NORMAL):SV_POSITION
+			{
+				return UnityObjectToClipPos(float4(vertex.xyz+normal*_outline_thickness,1));
+			}
+            
+			float4 pixel_shader(float4 vertex:SV_POSITION):COLOR 
+			{
+				if (_enable==1)
+				{
+					return float4(_outline_color.rgb,0);
+				}
+				else
+				{
+					discard;
+					return 0;
+				}						
+			}          
+			ENDCG
+		}
+        
+		Pass 
+		{
+			Name "FORWARD"
+			Tags {"LightMode"="ForwardBase"}
+			CGPROGRAM
+			#pragma vertex vertex_shader
+			#pragma fragment pixel_shader
+			#pragma target 3.0
+				
+			float4 _Color;
+												
+			float4 vertex_shader (float4 vertex:POSITION):SV_POSITION
+			{
+				return UnityObjectToClipPos(vertex);
+			}
+				
+			float4 pixel_shader(float4 vertex:SV_POSITION):COLOR 
+			{
+				return _Color;
+			}
+			ENDCG
+		}
+	}
+}