Hi Peter, All you need to do is build the OSG against GL2 and it'll pick up on the GL3 should pick up on extensions. The specific OSG/GL3 build is for pure GL3, dropping all backwards compatibility with GL2 so not appropriate in your case.
Robert. On Tue, May 25, 2010 at 6:33 PM, Peter Bear <[email protected]> wrote: > Hey, > > I had a thought regarding use of the OSG GL3 and GL2 libraries. GL3 will not > work on older video cards, but GL2 will. Would it be possible to change the > compile setup for OSG so that you can have a GL2 library and a GL3 library > side by side. This would allow for use of GL3 if your video card supports it, > but GL2 if it doesn't. This would make it so that you could actually set it > so that OSG would be able to be switched between GL2 and GL3 in an > application such as a game. This would open the way for using the GL2 library > for say, a GL2 mode, and a GL3 library for a GL3 mode. This is similar to how > most current games do switching between DX9 and DX10 mode. This would make it > much easier to do releases of games that use GL2 or GL3 features depending on > system specs and options settings. > > Could this possibly be done so that it would be easier to release an OSG app > that would have that kind of support for both GL2 and GL3, and possibly GL4 > once OSG supports it? > > Cheers, > Peter > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=28206#28206 > > > > > > _______________________________________________ > 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
