protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo)
{
base.OnRenderSizeChanged(sizeInfo);
if (IsInDesignMode)
{
return;
}
_logger.Information("Render size changed to {Size}", sizeInfo.NewSize);
// sometimes OnRenderSizeChanged happens before OnLoaded.
Start();
ResetBackBufferReference();
if (GraphicsDevice != null)
{
_viewModel.OnSizeChanged((int)sizeInfo.NewSize.Width, (int)sizeInfo.NewSize.Height);
}
}
private void Start()
{
if (_isInitialized)
{
return;
}
if (Application.Current.MainWindow == null)
{
throw new InvalidOperationException("The application must have a MainWindow");
}
Application.Current.MainWindow.Closing += (sender, args) => _viewModel?.OnExiting(this, EventArgs.Empty);
Application.Current.MainWindow.ContentRendered += (sender, args) =>
{
if (_isFirstLoad)
{
var width = (int)ActualWidth;
var height = (int)ActualHeight;
_graphicsDeviceService.StartDirect3D(Application.Current.MainWindow, width, height);
_viewModel?.Initialize();
_viewModel?.LoadContent();
_viewModel?.OnSizeChanged(width, height);
_isFirstLoad = false;
}
};
_direct3DImage = new D3DImage();
AddChild(new Image {
Source = _direct3DImage, Stretch = Stretch.None
});
_renderTarget = CreateRenderTarget();
CompositionTarget.Rendering += OnRender;
_stopwatch.Start();
_isInitialized = true;
}