1 files changed, 0 insertions, 62 deletions
diff --git a/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GrayscaleNode.shader b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GrayscaleNode.shader
deleted file mode 100644
index 2f604607..00000000
--- a/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GrayscaleNode.shader
+++ /dev/null
@@ -1,62 +0,0 @@
-Shader "Hidden/GrayscaleNode"
-{
-	Properties
-	{
-		_A ("_RGB", 2D) = "white" {}
-	}
-	SubShader
-	{
-		Pass //Luminance
-		{
-			CGPROGRAM
-			#include "UnityCG.cginc"
-			#pragma vertex vert_img
-			#pragma fragment frag
-
-			sampler2D _A;
-			
-			float4 frag(v2f_img i) : SV_Target
-			{
-				float lum = Luminance( tex2D( _A, i.uv ) );
-				return float4( lum.xxx, 1);
-			}
-			ENDCG
-		}
-
-		Pass //Natural Classic
-		{
-			CGPROGRAM
-			#include "UnityCG.cginc"
-			#pragma vertex vert_img
-			#pragma fragment frag
-
-			sampler2D _A;
-
-			float4 frag ( v2f_img i ) : SV_Target
-			{
-				float lum = dot ( tex2D ( _A, i.uv ), float3( 0.299,0.587,0.114 ) ); 
-				return float4( lum.xxx, 1 );
-			}
-			ENDCG
-		}
-
-		Pass //Old School
-		{
-			CGPROGRAM
-			#include "UnityCG.cginc"
-			#pragma vertex vert_img
-			#pragma fragment frag
-
-			sampler2D _A;
-
-			float4 frag ( v2f_img i ) : SV_Target
-			{
-				float3 rgbValue = tex2D ( _A, i.uv ).rgb;
-				float lum = ( rgbValue.r + rgbValue.g + rgbValue.b ) / 3;
-				return float4( lum.xxx, 1 );
-			}
-			ENDCG
-		}
-
-	}
-}