Hi Shawl,

On 19 October 2012 06:52, wh_xiexing <[email protected]> wrote:
>          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 ???

The OSG provide a full range of culling mechanism, the key one is view
frustum culling.  All you need to do is build a well balanced scene
graph and the OSG will cull it efficiently.

Building an efficient scene graph is the task you need to focus on,
this topic is a huge one so I'd recommend spending some time looking
through the archives on the topic and also reading the OSG books.

Robert.
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