mattatz · January 8, 2015 03:28 · Jan 8, 2015
diff --git a/StencilSample.shader b/StencilSample.shader
@@ -0,0 +1,118 @@
+Shader "Mattatz/StencilSample" {
+
+	Properties {
+
+		_Outline ("Outline Length", Range(0.0, 1.0)) = 0.2
+
+		_Color ("Color", Color) = (0.8, 0.8, 0.8, 1.0)
+		_OutlineColor ("Outline Color", Color) = (0.2, 0.2, 0.2, 1.0)
+
+	}
+
+	SubShader {
+
+		Tags { 
+			"RenderType"="Opaque"
+			"Queue"="Transparent"
+		}
+
+		LOD 200
+
+		// render model
+
+		Pass {
+
+			Stencil {
+				Ref 128
+				Comp always
+				Pass replace
+			}
+
+			Blend SrcAlpha OneMinusSrcAlpha 
+
+			CGPROGRAM
+
+			#pragma vertex vert
+			#pragma fragment frag
+
+			float4 _Color;
+
+			struct appdata {
+				float4 vertex : POSITION;
+				float3 normal : NORMAL;
+			};
+
+			struct v2f {
+				float4 pos : SV_POSITION;
+			};
+
+			v2f vert(appdata v) {
+				v2f o;
+
+				float4 vert = v.vertex;
+
+				o.pos = mul(UNITY_MATRIX_MVP, vert);
+
+				return o;
+			}
+
+			half4 frag(v2f i) : COLOR {
+				return _Color;
+			}
+
+			ENDCG
+		}
+
+		// render outline
+
+		Pass {
+
+			Stencil {
+				Ref 128
+				Comp NotEqual
+			}
+
+			Cull Off
+			ZWrite Off
+
+			Blend SrcAlpha OneMinusSrcAlpha 
+
+			CGPROGRAM
+
+			#pragma vertex vert
+			#pragma fragment frag
+
+			float _Outline;
+			float4 _OutlineColor;
+
+			struct appdata {
+				float4 vertex : POSITION;
+				float3 normal : NORMAL;
+			};
+
+			struct v2f {
+				float4 pos : SV_POSITION;
+			};
+
+			v2f vert(appdata v) {
+				v2f o;
+
+				float4 vert = v.vertex;
+				vert.xyz += v.normal * _Outline;
+
+				o.pos = mul(UNITY_MATRIX_MVP, vert);
+
+				return o;
+			}
+
+			half4 frag(v2f i) : COLOR {
+				return _OutlineColor;
+			}	
+
+			ENDCG
+		}
+
+	} 
+
+	FallBack "Diffuse"
+}