Hi Michele, This most likely will be because the viewport is going to 0,0,0,0 size and messing up projection matrix. I'm afraid I don't have an straight forward solutions to this - it most likely will require so special catch code to handle this problem case.
Robert. On Mon, Jul 14, 2008 at 10:05 PM, Michele Bosi <[EMAIL PROTECTED]> wrote: > I am sure this is a known problem, but looking on the archives didn't > help, maybe I didn't come up with the right keywords, anyway... I am > using OSG 2.4 (but the problem was already there since OSG 2.0) under > both Win XP and Linux, with the Qt4 wrapper and when I resize the > window to zero width or height and then restore it the content of the > scene disappears (my program has 3d views that can be temprarily > hidden/restored). This behaviour seem not to be related to the driver > but to OSG since with OSG-based programs I get the same problem with > nVidias as well as with ATIs, while other non-OSG-based programs don't > show this problem. > > I suspect that with a zero-area viewport something breaks into the > culling mechanism or some division by zero mixes up some OSG internal > state or matrix. > Does anyone know how to fix or work around this? do I have to reset > something once I detect a non-zero area viewport in my resize event > handler? > > Thanks, > Michele > _______________________________________________ > 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
