public void TerminateDisplay()
 {
     if (eglDisplay != null)
     {
         IEGL10 egl = EGLContext.EGL.JavaCast <IEGL10> ();
         if (!egl.EglTerminate(eglDisplay))
         {
             Log.Warn("AndroidWindow", "Failed to terminate display {0}.", eglDisplay);
         }
         eglDisplay = null;
     }
 }