public PerformanceTest()
{
InitializeComponent();
// To use RenderAsManyFramesAsPossible we need DirectXOverlay presentation type
MainDXViewportView.PresentationType = DXView.PresentationTypes.DirectXOverlay;
InfoTextBlock.Text = string.Format(InfoTextBlock.Text, HeadingIncreaseOnEachFrame);
MainDXViewportView.DXSceneInitialized += delegate(object sender, EventArgs args)
{
if (MainDXViewportView.DXScene == null) // Probably WPF 3D rendering
{
return;
}
string testName = string.Format("PerformanceTest with '{0}' ({1})",
System.IO.Path.GetFileName(StartupFileName),
OptimizeReadModel ? "optimized" : "not optimized");
_performanceAnalyzer = new PerformanceAnalyzer(MainDXViewportView, testName, initialCapacity: 10000);
_performanceAnalyzer.StartCollectingStatistics();
};
this.Loaded += OnLoaded;
//this.Focusable = true; // by default Page is not focusable and therefore does not receive keyDown event
//this.PreviewKeyDown += OnPreviewKeyDown;
// FPS will be displayed in Window Title - save the title so we can restore it later
_savedWindowTitle = Application.Current.MainWindow.Title;
this.Unloaded += delegate(object sender, RoutedEventArgs args)
{
StopTest(showResults: false);
MainDXViewportView.Dispose();
if (_parentWindow != null)
{
_parentWindow.PreviewKeyDown -= OnPreviewKeyDown;
}
};
}
private void OnBenchmarkSceneRendered(object sender, EventArgs e)
{
var now = DateTime.Now;
if (_benchmarkStepFramesCount == 1)
{
// Starting one benchmark step
_performanceAnalyzer.StartCollectingStatistics();
_benchmarkStepStartTime = now;
}
else if (_mainDXViewportView.DXScene.Statistics != null) // just in case check that Statistics is not null (this should not happen because we set DXDiagnostics.IsCollectingStatistics to true)
{
// else collect TotalRenderTimeMs
_totalRenderTimes.Add(_mainDXViewportView.DXScene.Statistics.TotalRenderTimeMs);
}
// Complete one benchmark step after 5 seconds or after 200 frames
if ((now - _benchmarkStepStartTime).TotalSeconds > 5 || _benchmarkStepFramesCount > 200)
{
_performanceAnalyzer.StopCollectingStatistics();
double totalRenderTimes;
if (_totalRenderTimes.Count > 0)
{
totalRenderTimes = _totalRenderTimes.Average();
_totalRenderTimes.Clear();
}
else
{
totalRenderTimes = 0;
}
_benchmarkTotalRenderTimes.Add(totalRenderTimes);
int threadsCount = _mainDXViewportView.DXScene.MaxBackgroundThreadsCount;
string resultsText = _performanceAnalyzer.GetResultsText(addSystemInfo: false,
addDXEngineInfo: false,
addGarbageCollectionsInfo: false,
addTotals: true,
addStateChangesStatistics: false,
addFirstFrameStatisticsWhenAvailable: false,
addRenderingStatistics: true,
addMultiThreadingStatistics: true);
AddInfoText(resultsText);
if (ThreadsCountSlider.Value < ThreadsCountSlider.Maximum)
{
ThreadsCountSlider.Value += 1; // Increase threads count
AddInfoText(string.Format("====================\r\n\r\nRendering with MaxBackgroundThreadsCount = {0}\r\n", threadsCount + 1));
}
else
{
StopBenchmark();
}
_benchmarkStepFramesCount = 0;
}
_benchmarkStepFramesCount++;
}
private void RestartTestButton_OnClick(object sender, RoutedEventArgs e)
{
_performanceAnalyzer.StopCollectingStatistics();
_performanceAnalyzer.StartCollectingStatistics();
}