Camera SwapChain should automatically react to window changes

[profexorgeek]

NOTE: @vchelaru asked me to file this card but it may not be desired behavior. For example, if I specify a custom render target size, I may not want that overridden if the window resizes!

When the user resizes the window, the render target for a custom camera does not have its size updated. You can fix this by binding an event such as the one below to the FlatRedBallServices.GraphicsOptions.SizeOrOrientationChanged event:

void OnSizeOrOrientationChange(object sender, EventArgs e)
{
    Camera.Main.SwapChain.UpdateRenderTargetSize(
        FlatRedBallServices.Game.Window.ClientBounds.Width,
        FlatRedBallServices.Game.Window.ClientBounds.Height);
}

If you do not add this event handler, the render target size does not change. You can see this happening with the black bars in the gif below.