//public override void PaintToCanvas(Canvas canvas)
//{
// throw new NotImplementedException();
//}
public override void PaintToOutputWindow()
{
//if (!isInitGLControl)
//{
// return;
//}
//var innumber = dbugCount;
//dbugCount++;
//Console.WriteLine(">" + innumber);
//TODO: review here
windowControl.MakeCurrent();
this.openGLViewport.PaintMe();
windowControl.SwapBuffers();
//Console.WriteLine("<" + innumber);
}
protected override void OnClosing()
{
//make current before clear GL resource
_windowControl.MakeCurrent();
}