public override void OnApplyTemplate()
{
var window = Window.GetWindow(this);
_windowHandle = window is null ? IntPtr.Zero : new WindowInteropHelper(window).Handle;
_hwnd = new HwndSource(0, 0, 0, 0, 0, "Offscreen Window", _windowHandle);
_windowInfo = Utilities.CreateWindowsWindowInfo(_hwnd.Handle);
_wpfImage = new Image()
{
RenderTransformOrigin = new Point(0.5, 0.5),
RenderTransform = new ScaleTransform(1, -1)
};
var grid = new Grid();
_framesTextBlock = new TextBlock()
{
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
Margin = new Thickness(5),
Foreground = new SolidColorBrush(Colors.Blue),
FontWeight = FontWeights.Bold
};
Panel.SetZIndex(_framesTextBlock, 1);
grid.Children.Add(_framesTextBlock);
grid.Children.Add(_wpfImage);
AddChild(grid);
switch (UpdateStrategy)
{
case UpdateStrategy.WriteableBitmapImage:
_updateStrategy = new UpdateStrategyWriteableBitmap();
break;
case UpdateStrategy.D3DSurface:
_updateStrategy = new UpdateStrategyD3D();
break;
}
if (UseSeperateRenderThread)
{
_cts = new CancellationTokenSource();
_renderThread = new Thread((object boxedToken) =>
{
InitOpenGLContext();
while (!_cts.IsCancellationRequested)
{
UpdateFramerate();
if (_wasResized)
{
_wasResized = false;
_updateStrategy.Resize((int)Math.Round(ActualWidth), (int)Math.Round(ActualHeight));
Dispatcher.Invoke(() => _wpfImage.Source = _updateStrategy.CreateImageSource());
}
GLRender?.Invoke(this, EventArgs.Empty);
_updateStrategy?.Draw();
Dispatcher.Invoke(() => _updateStrategy.InvalidateImageSource());
}
_renderThread.Join();
})
{
IsBackground = true, Priority = ThreadPriority.Highest
};
_renderThread.Start(_cts);
_stopwatch.Start();
}
else
{
_dt = new DispatcherTimer(DispatcherPriority.Send)
{
Interval = TimeSpan.FromMilliseconds(1)
};
InitOpenGLContext();
_dt.Tick += (o, e) =>
{
UpdateFramerate();
if (_wasResized)
{
_wasResized = false;
_updateStrategy.Resize((int)Math.Round(ActualWidth), (int)Math.Round(ActualHeight));
_wpfImage.Source = _updateStrategy.CreateImageSource();
}
GLRender?.Invoke(this, EventArgs.Empty);
_updateStrategy.Draw();
_updateStrategy.InvalidateImageSource();
};
_dt.Start();
_stopwatch.Start();
}
base.OnApplyTemplate();
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
if (!DesignerProperties.GetIsInDesignMode(new DependencyObject()))
{
Window.GetWindow(this).Closing += (ss, ee) => { mCts?.Cancel(); }
}
;
var ptr = DXInterop.Direct3DCreate9(DXInterop.D3D_SDK_VERSION);
var window = Window.GetWindow(this);
mWndHandle = window is null ? IntPtr.Zero : new WindowInteropHelper(window).Handle;
mHwnd = new HwndSource(0, 0, 0, 0, 0, "Offscreen Window", mWndHandle);
mWindowInfo = Utilities.CreateWindowsWindowInfo(mHwnd.Handle);
mTargetFramerate = FramerateLimit > 0 ? TimeSpan.FromMilliseconds(1000.0d / FramerateLimit) : TimeSpan.Zero;
switch (UpdateStrategy)
{
case UpdateStrategy.WriteableBitmapImage:
mUpdateStrategy = new UpdateStrategyWriteableBitmap();
break;
case UpdateStrategy.D3DImage:
mUpdateStrategy = new UpdateStrategyD3D();
break;
}
mRenderTread = new Thread((object boxedToken) =>
{
InitOpenGLContext();
while (!mCts.IsCancellationRequested)
{
++mFrames;
if (mWasResized)
{
mWasResized = false;
mUpdateStrategy.Resize((int)Math.Round(ActualWidth), (int)Math.Round(ActualHeight));
Dispatcher.Invoke(() => mRenderedImg = mUpdateStrategy.CreateImageSource());
}
var rt = Render();
var sleep = mTargetFramerate - rt;
mAccumulatedDt += rt;
if (FramerateLimit > 0)
{
mAccumulatedDt += sleep;
}
if (mAccumulatedDt >= TimeSpan.FromSeconds(1))
{
mLastFrames = mFrames;
mFrames = 0;
mAccumulatedDt = TimeSpan.Zero;
}
if (FramerateLimit > 0)
{
Thread.Sleep(sleep > TimeSpan.Zero ? sleep : TimeSpan.Zero);
}
Dispatcher.Invoke(() => InvalidateVisual());
}
mRenderTread.Join();
})
{
IsBackground = true
};
mRenderTread.Start(mCts);
}