hi); }
    float Y3m3_re(float mu, float phi) { return -Y33_re(mu, phi); }
    float Y3m3_im(float mu, float phi) { return  Y33_im(mu, phi); }
    
    float SDF_VOLUME(vec3 X)
    {
        return sdBox(X, vec3(-10.0), vec3(10.0));
    }

    float VOLUME_EXTINCTION_MAX(float extinction_ui)
    {
        return extinction_ui;
    }

    float VOLUME_EXTINCTION(float extinction_ui, in vec3 X)
    {
        return extinction_ui;
    }

    float colormap_red(float x) {
    if (x < (5.35651507139080E+02 + 4.7