/// <summary>Handles the RenderToBitmap event of the PanelDisplay control.</summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="PaintEventArgs"/> instance containing the event data.</param>
private void PanelDisplay_RenderToBitmap(object sender, PaintEventArgs e)
{
if ((IsDesignTime) || (_swapChain == null))
{
return;
}
// This method is used to capture the D3D rendering when rendering to a GDI+ bitmap (as used by the overlay).
// Without it, no image is rendered and only a dark grey background is visible.
IGorgonImage swapBufferImage = null;
Bitmap gdiBitmap = null;
try
{
RenderImage();
swapBufferImage = _swapChain.CopyBackBufferToImage();
gdiBitmap = swapBufferImage.Buffers[0].ToBitmap();
swapBufferImage.Dispose();
e.Graphics.DrawImage(gdiBitmap, new Point(0, 0));
}
catch
{
// Empty on purpose. Don't need to worry about exceptions here, if things fail, they fail and state should not be corrupted.
}
finally
{
gdiBitmap?.Dispose();
swapBufferImage?.Dispose();
}
}