title: Does drawing outside of screen bounds affect performance
body: <p>In my 2D game I have large map, and I scroll around it (like in Age of Empires).</p>
  
  <p>On draw I draw all the elements (which are textures/Images).  Some of them are on the screen, but most of them are not (because you see about 10% of the map).</p>
  
  <p>Does XNA know not to draw them by checking that the destination rectangle won't fall on the screen?  </p>
  
  <p>Or should I manually check it and avoid drawing them at all? </p>