if (strength > 0 && !tiles_only)
{
    gpu_set_blendmode_ext(bm_zero, bm_src_color);
    draw_set_color(merge_color(c_white, tint, strength));
    ossafe_fill_rectangle(0, 0, room_width, room_height, false);
    draw_set_color(c_white);
    gpu_set_blendmode(bm_normal);
}