#define H(s,v)   sin( s + (v).zxy - cos(s.zxy + (v).yzx) + cos(s.yzx + v) )

void mainImage( out vec4 O, vec2 U )
{
    U = U/8. + sin(iTime);
    
    vec3 d = vec3(11.1, 14.3, 8.2),
         t = iTime/d,
         v = (U.x * H( vec3(2,6,4), t - d.yzx)
                + U.y * H( vec3(3,7,5), t + d    )
                ) /4.,
         K = vec3(3,5,6);
    
    O.rgb = H(3.+K,((v+H(K,v))/2. +H(1.62+K, (v+H(K,v))/2. ) *3.)) * .5 + .5;
}