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iUltimateLP/hsv2rgb.hlsl

Created March 4, 2016 14:50
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A simple HLSL shader code to convert HSV to RGB colors.
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hsv2rgb.hlsl
float4 K = float4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
float3 p = abs(frac(input.xxx + K.xyz) * 6.0 - K.www);
return input.z * lerp(K.xxx, clamp(p - K.xxx, 0.0, 1.0), input.y);
@Devaniti
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Devaniti commented Mar 2, 2021

clamp(..., 0.0, 1.0) can be replaced with saturate
It would also be nice to cite original source, if I'm not mistaken it's https://web.archive.org/web/20200207113336/http://lolengine.net/blog/2013/07/27/rgb-to-hsv-in-glsl

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