function scr_screensurf_set(arg0 = false)
{
    var __surf_obj = -4;
    if (!i_ex(obj_screen_surface))
        __surf_obj = instance_create(0, 0, obj_screen_surface);
    else
        __surf_obj = 436;
    surface_set_target(__surf_obj.surf);
    if (arg0)
        draw_clear_alpha(c_black, 0);
    return __surf_obj;
}