Lights
{
    struct Light
    {
        vec3 position;
        vec3 color;
        float intensity;
    };

    // Example
    vec3 ProcessLights(vec3 color, vec3 normal, vec3 position, Light l)
    {
        vec3 lightDir = normalize(l.position - position);
        float diff = max(dot(normal, lightDir), 0.0);
        vec3 diffuse = diff * l.color * l.intensity;

        return color * diffuse;
    }
}