code: func scaleUpdater() {
  	for {
  		s := getscale(0, 0)
  		atomic.StoreUint64(&cachedScale, math.Float64bits(s))
  		time.Sleep(cacheUpdateWait)
  	}
  }
docs: // run as goroutine. Will keep the desktop scale up to date.
  // This can be removed once the scale change event is implemented in GLFW 3.3