studycase2

Assets/QuickOutline/Resources/Shaders/OutlineMask.shader

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+//
+//  OutlineMask.shader
+//  QuickOutline
+//
+//  Created by Chris Nolet on 2/21/18.
+//  Copyright © 2018 Chris Nolet. All rights reserved.
+//
+
+Shader "Custom/Outline Mask" {
+  Properties {
+    [Enum(UnityEngine.Rendering.CompareFunction)] _ZTest("ZTest", Float) = 0
+  }
+
+  SubShader {
+    Tags {
+      "Queue" = "Transparent+100"
+      "RenderType" = "Transparent"
+    }
+
+    Pass {
+      Name "Mask"
+      Cull Off
+      ZTest [_ZTest]
+      ZWrite Off
+      ColorMask 0
+
+      Stencil {
+        Ref 1
+        Pass Replace
+      }
+    }
+  }
+}