hi su - we cover this (and more!) in the intermediate training course we teach. however, it's a pretty simple answer - the drawImplementation is only executed once, because it's converted to a display list the first time drawn. so, disable display lists on that drawable, and you'll be set!
bob On May 2, 2008, at 5:13 AM, su hu wrote: > Hi all, > > I have some opengl codes and want to use these codes in osg program. > > I do it as follow: > > 1. Add a geode to root scene and define a drawable (derived from > osg::Drawable). > 2. The drawable is added as child of the geode. OpenGL code is added > in DrawCallback of the drawable(in drawImplementation). > > But it seems that the DrawCallback function is called by osg only > once. When I add other node to root scene, the drawable will > disappear. > > Could you please tell me how to add opengl code to osg program?A > simple sample will be appreciated. Thanks a lot. > > Regards, > > t s > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
