void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
	vec2 uv = fragCoord.xy / iResolution.xy;
    uv += vec2(0.5);
    uv *= 7.0;
    
    float t = iTime;
    uv *= (sin(uv + t));

    float M = sin(uv.x*uv.y + sin(t));
    
	fragColor = vec4(vec3(M),1.0);
}