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Assets/Alloy/Scripts/MaterialMapChannelPacker/Shaders/AlloyNormalBlit.shader

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+// Alloy Physical Shader Framework
+// Copyright 2013-2017 RUST LLC.
+// http://www.alloy.rustltd.com/
+
+Shader "Hidden/AlloyNormalBlit" {
+    Properties {
+        _MainTex ("Render Input", 2D) = "white" {}
+    }
+    SubShader {
+        ZTest Always Cull Off ZWrite Off Fog { Mode Off }
+        Pass {
+            CGPROGRAM
+                #pragma vertex vert_img
+                #pragma fragment frag
+                #include "UnityCG.cginc"
+            
+                sampler2D _MainTex;
+                float _EditorIsLinear;
+            
+                float4 frag(v2f_img IN) : SV_Target {
+                    half3 n = UnpackNormal(tex2D (_MainTex, IN.uv));
+                    half4 col =  half4((n.x + 1.0f) / 2.0f, (n.y + 1.0f) / 2.0f, (n.z + 1.0f) / 2.0f, 1.0f);
+                    return col;
+                }
+            ENDCG
+        }
+    }
+}