On Sat, Mar 30, 2002 at 08:11:31AM -0700, Jens Owen wrote: > Ian Romanick wrote: > > > > On Thu, Mar 28, 2002 at 12:53:06PM -0800, Ian Romanick wrote: > > > > > #0 0x4309fb0a in CreateContext (dpy=0x8075708, vis=0x0, shareList=0x0, > > > allowDirect=1, contextID=0) at glxcmds.c:165 > > > #1 0x4309fc5d in glXCreateContext (dpy=0x8075708, vis=0x0, shareList=0x0, > > > allowDirect=1) at glxcmds.c:206 > > > > > > It dies because it dereferences vis, which is NULL. The man page for > > > glXCreateContext doesn't say anything about the expected behavior if vis is > > > NULL. Should it return NULL or ... ? > > > > I worked around this problem by making CreateContext retun NULL if vis = > > NULL. This allows Maya to load. > > Ian, > > Andreas has also tried loading Maya and has seen similar problems. He > elluded to Maya wanting an overlay visual. If would be interesting to > see if the vis == NULL problem went away if we had an overlay visual. > We could hack up the visual initialization code to lie and say we had > overlay visuals, just to see if this is the problem...
I don't know about overlay visuals, but I do know that CreateContext should probably test vis and give some sort of reasonable return. SEGFAULTing is probably not the best answer. The curious thing is that this seems to be in the SGI GLX code. I wonder what happens on Irix (or any other OS for that matter) if glXCreateContext is called with vis==NULL. -- Tell that to the Marines! _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
