42 lines
801 B
Plaintext
42 lines
801 B
Plaintext
Shader "Hidden/HSVToRGBNode"
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{
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Properties
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{
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_A ( "_Hue", 2D ) = "white" {}
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_B ( "_Saturation", 2D ) = "white" {}
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_C ( "_Value", 2D ) = "white" {}
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}
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SubShader
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{
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Pass
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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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uniform sampler2D _A;
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uniform sampler2D _B;
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uniform sampler2D _C;
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float3 HSVToRGB( float3 c )
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{
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float4 K = float4( 1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0 );
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float3 p = abs( frac( c.xxx + K.xyz ) * 6.0 - K.www );
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return c.z * lerp( K.xxx, saturate( p - K.xxx ), c.y );
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}
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float4 frag ( v2f_img i ) : SV_Target
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{
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float h = tex2D ( _A, i.uv ).r;
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float s = tex2D ( _B, i.uv ).r;
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float v = tex2D ( _C, i.uv ).r;
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return float4( HSVToRGB(float3(h,s,v)), 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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