Hi Guy, This is how I'd do it. First up you can't multiple buffer UserData directly, so to do the multi-buffer you'll need to create your own multibuffer UserData class subclassed from osg::Referenced. Second to decide between the two buffers you can use the current osg::RenderInfo that is passed into the drawImplementation(RenderInfo&) to find out the current view/camera.
Robert. On Sat, May 30, 2009 at 1:55 AM, Guy Volckaert <[email protected]> wrote: > Hi, > > What's the best way to pass user data to all nodes and drawables. For > example, lets assumes I have 2 cameras (left & right). Each camera points to > the same scene. When rendering the left camera, I want the the nodes and > drawables to use userdata1, and when rendering the right camera I want the > nodes and drawables to use userdata2. > > The goal is to pass thread safe data during the rendering of each camera > without having to use a mutext or a critical section to access the data. > Since each camera has its own user data "copy" it should be thread safe. > > I know that the RenderInfo contains a userdata ptr, but I don't know how to > use it as decribed above. > > Any suggestions are appreciated. > > Thank you! > > Cheers, > Guy > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=13202#13202 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
