Hi, I have a postdraw callback attached to the viewer camera which looks for any shaders with error logs and flags them for removal. I have a separate callback that then iterates those flags and removes them accordingly.
However, to make the shaders accessible to my postdraw callback, I had to keep references to them in the draw callback instance. It worked fine, but it's a bit of a pain to manage. So, I'm looking for a little better way of doing that. My best thought at the moment is: 1. Create a postdrawNodeVisitor with 'apply (osg::Program&)' as an overload. All post-draw shader manipulation is encapsulated there. 2. Add my camera as a child of the scenegraph's root node (which isn't rendered by the camera). 3. In my postdraw callback, call camera->getParent( 0 )->accept ( postdrawNodeVisitor ); The solution appears to be good enough - I don't need to traverse the graph every time to do shader maintenance (only when they get added or removed from the graph), so the postdraw would trigger a traversal only when necessary. However, it just seems a bit odd to add the camera as a child to the root node to get the job done. Is there some other linkage to the scene graph available from a camera's post draw? Thanks, Joel ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43476#43476 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
