private void GameView_DisplayModeChange(DisplayMode mode)
{
RenderSupport.DefaultProjectionState = new ProjectionState(ProjectionDescription.Orthogonal(0, 0, mode.Width, mode.Height));
_rasterContext = new RasterizerContext(RenderSupport.RasterizerStatesManager.ScissorDisableViewPortEnable);
_rasterContext.ViewPort = ViewPort.CreateViewPort(0, 0, mode.Width, mode.Height, CoordinateSystem, AspectMode.LetterBox);
ProjectionState projectionState = new ProjectionState(ProjectionDescription.Orthogonal(CoordinateSystem));
_touchTranslator.ViewPort = _rasterContext.ViewPort;
_rootNode.RenderStates.ProjectionState = projectionState;
_rootNode.RenderStates.RasterizerContext = _rasterContext;
}