dear friends:

         i am newbie . my question is , i have a group which contains a lot a 
gode.  in order to speed the rendering .  i don't know whether i need to write 
a  cull callback .  or do nothing and let the osg system do the culling work 
instead .  does osg automatically traverse the group and  cull the node which 
lay out the frustum ???


Shawl 
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