由于没有人回答,我想我可以在提出问题后发布自己的发现。我还没有弄清楚如何测量从修改视觉外观到在屏幕上绘制所需的时间。
要计算应用程序内的 CPU 利用率,您可以使用Analytics 类。要计算帧率,只需挂接到 CompositionTarget 类的静态渲染事件。
private DispatcherTimer fpsTimer = new DispatcherTimer();
private DateTime lastFpsUpdate;
private Analytics analyzer = new System.Windows.Analytics();
private int frameCount;
public MyClass()
{
fpsTimer.Interval = TimeSpan.FromSeconds(1);
fpsTimer.Tick += new EventHandler(fpsTimer_Tick);
fpsTimer.Start();
lastFpsUpdate = DateTime.Now;
CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);
}
// Called every second
void fpsTimer_Tick(object sender, EventArgs e)
{
double framerate = 0;
framerate = frameCount / (DateTime.Now - lastFpsUpdate).TotalSeconds;
c_statusMessage.Text = String.Format("Framerate: {0:0} fps, CPU utilization: {1:0.0}%", framerate, analyzer.AverageProcessLoad);
lastFpsUpdate = DateTime.Now;
frameCount = 0;
}
// Called by the framework on every frame
void CompositionTarget_Rendering(object sender, EventArgs e)
{
frameCount++;
}