You Have to do OpenGL calls where in the Processes that has the OpenGL context which in OSG is the Draw Processes, so you have to do anything with OpenGL in Draw Call callback
You cannot do OpenGL calls in the App process as your doing below ( UNLESS you have OSG in Single Thread MODE ) __________________________________________________________ Gordon Tomlinson <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED] IM: <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED] <http://www.vis-sim.com/> www.vis-sim.com <http://www.gordontomlinson.com/> www.gordontomlinson.com __________________________________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Adrian Egli OpenSceneGraph (3D) Sent: Thursday, July 31, 2008 2:20 AM To: OpenSceneGraph Users Subject: Re: [osg-users] glGetString returning NULL Hi, i had similar problem, the graphic context was no longer current/ available. if you need the extensions: have a look at osg::GL2Extensions class or osg::GLExtensions class, work around: custom drawable object, in the drawimplementation method add the glGetString,.. /adrian 2008/7/31 sherman wilcox <[EMAIL PROTECTED]> Running latest version of OSG in SVN, calling glGetString(...) from main render loop (single threaded osgViewer). Like this: while(viewer.done() == false) { viewer.frame(); char* extensions = (char*)glGetString(GL_EXTENSIONS); } extensions is always NULL. Am I doing something wrong here? Could someone else test this? _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- ******************************************** Adrian Egli
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