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// Preview shader for cosine gradient
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Shader "Hidden/Klak/Chromatics/CosineGradient/Preview"
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{
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CGINCLUDE
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#include "UnityCG.cginc"
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half3 _CoeffsA;
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half3 _CoeffsB;
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half3 _CoeffsC;
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half3 _CoeffsD;
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struct v2f
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{
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float4 vertex : SV_POSITION;
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float2 uv : TEXCOORD0;
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};
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half4 frag (v2f i) : SV_Target
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{
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half t = i.uv.x;
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half3 rgb = saturate(_CoeffsA + _CoeffsB * cos(_CoeffsC * t + _CoeffsD));
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#if !defined(UNITY_COLORSPACE_GAMMA)
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rgb = GammaToLinearSpace(rgb);
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#endif
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return half4(rgb, 1);
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}
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ENDCG
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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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#pragma multi_compile __ UNITY_COLORSPACE_GAMMA
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#pragma vertex vert_img
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#pragma fragment frag
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#pragma target 3.0
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ENDCG
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}
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}
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}
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