HI Andrew The issue revolves around the default osg::Camera constructing without a StateSet, in this default state it doesn't set any state when you attach it to a Viewer. It leaves the responsibility up to you as the developer to set up the state which is appropriate for your viewer. Prior to OSG-3.2 a bug in osgUtil::SceneView overridded the state set by the viewer's Camera adding in it's own global settings - this meant you couldn't set your own which is the bug, but had a side affect of hiding the lack of set global state by adding in some defaults, so your application looked like it was fine even though it wasn't setting state that it should have been doing.
The View(er) itself has osg::Camera and by default it sets up Camera StateSet with with some defaults appropriate for viewer by calling StateSet::setGlobalDefaults(). This means that by default the viewer actually enables depth test etc. However, if you replace the View(er) Camera's without your own without the state set up in a similar way it breaks. The original Qt example replaced the Camera and didn't set up state so if you ported it to OSG-3.2 or later it. In Qt and other examples in OSG-3.2 and later the View's Camera is used directly rather than assigned a new one. If you still want to assign your own Camera (something this is actually unnecessary) you should set up the global state that you want, sensible defaults for a 3d viewer are set up by: view.getCamera()->getOrCreateStateSet()->setGlobalDefaults(); If you don't do this then you application will be using OpenGL defaults. Robert. On 4 January 2016 at 22:57, Andrew Cunningham <[email protected]> wrote: > [quote="robertosfield"]Hi Andrew > The reason why z buffer etc. Is off is the your setup hasn't set it up as > there is no global stateset to the camera you are passing to the Viewer. > I have discussed this topic quite a but since OSG-3.2. Please see the > archives. > Robert. [quote] > > OK thanks, but my forum searching did not turn up much on this topic. Wrong > keywords I suppose. > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=65940#65940 > > > > > > _______________________________________________ > 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
