LYGIA Shader Library

rayleigh (lygia/lighting/common/rayleigh)

#ifndef FNC_RAYLEIGH
#define FNC_RAYLEIGH

// Rayleigh phase
float rayleigh(const in float mu) {
    return 3. * (1. + mu*mu) / (16. * PI);
}

#endif

#ifndef FNC_RAYLEIGH
#define FNC_RAYLEIGH

// Rayleigh phase
float rayleigh(float mu) {
    return 3. * (1. + mu*mu) / (16. * PI);
}

#endif

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