hi Guy, are you perhaps using multiple threads on a multi core machine? then it might be a cache coherence problem. You'd need to declare your shared data as volatile:
volatile osg::Vec3 v[12]; regards Ralph Guy Wallis schrieb: > Hello, > > I just tried to do something in osg that produces different behavior > depending on which platform I compile it on. I realize it’s an ugly > thing to do, but I set up a global variable v that is of type osg::Vec3 > and then made it an array of size 12: > > > > osg::Vec3 v[12]; > > > > If I compile the code in debug mode using MSVC v9, (or using > optimization with the gnu compiler under IRIX) the code works fine. If I > compile it using the ‘Release’ setting in MSVC I find setting the global > in one part of my code isn’t detected in other sections – which see the > array’s initial values (all zeros). > > > > If I use an osg::Vec3Array everything works fine, irrespective of platform. > > > > Is it simply not a good idea to use an array of osg::Vec3 (and I’m lucky > it happens to work at all), or is something up with the MSVC optimizer? > > > > Thanks, > > > > Guy > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
