LYGIA Shader Library

Dependencies:

• lygia/math/saturate.glsl

Use:

<vec3> hue2rgb(<float> hue)

Check it on Github

#ifndef FNC_HUE2RGB
#define FNC_HUE2RGB
vec3 hue2rgb(const in float hue) {
    float R = abs(hue * 6.0 - 3.0) - 1.0;
    float G = 2.0 - abs(hue * 6.0 - 2.0);
    float B = 2.0 - abs(hue * 6.0 - 4.0);
    return saturate(vec3(R,G,B));
}
#endif

Use:

<float3> hue2rgb(<float> hue)

Check it on Github

#ifndef FNC_HUE2RGB
#define FNC_HUE2RGB
float3 hue2rgb(float hue) {
    float R = abs(hue * 6.0 - 3.0) - 1.0;
    float G = 2.0 - abs(hue * 6.0 - 2.0);
    float B = 2.0 - abs(hue * 6.0 - 4.0);
    return saturate(float3(R,G,B));
}
#endif

Check it on Github

fn hue2rgb(hue: f32) -> vec3f {
    let R = abs(hue * 6.0 - 3.0) - 1.0;
    let G = 2.0 - abs(hue * 6.0 - 2.0);
    let B = 2.0 - abs(hue * 6.0 - 4.0);
    return saturate(vec3f(R,G,B));
}