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62 lines
1.0 KiB
62 lines
1.0 KiB
Shader "Hidden/GrayscaleNode"
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{
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Properties
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{
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_A ("_RGB", 2D) = "white" {}
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}
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SubShader
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{
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Pass //Luminance
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{
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CGPROGRAM
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#include "UnityCG.cginc"
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#pragma vertex vert_img
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#pragma fragment frag
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sampler2D _A;
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float4 frag(v2f_img i) : SV_Target
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{
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float lum = Luminance( tex2D( _A, i.uv ) );
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return float4( lum.xxx, 1);
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}
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ENDCG
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}
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Pass //Natural Classic
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{
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CGPROGRAM
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#include "UnityCG.cginc"
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#pragma vertex vert_img
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#pragma fragment frag
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sampler2D _A;
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float4 frag ( v2f_img i ) : SV_Target
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{
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float lum = dot ( tex2D ( _A, i.uv ), float3( 0.299,0.587,0.114 ) );
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return float4( lum.xxx, 1 );
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}
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ENDCG
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}
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Pass //Old School
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{
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CGPROGRAM
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#include "UnityCG.cginc"
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#pragma vertex vert_img
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#pragma fragment frag
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sampler2D _A;
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float4 frag ( v2f_img i ) : SV_Target
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{
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float3 rgbValue = tex2D ( _A, i.uv ).rgb;
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float lum = ( rgbValue.r + rgbValue.g + rgbValue.b ) / 3;
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return float4( lum.xxx, 1 );
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}
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ENDCG
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}
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}
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}
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