[Dri-devel] Bug w/ Performer & Multiple Windows

[<al...@sg...>]

Hi dri-devel,

Passing along a bug report.  

XFree86 3.9.16 + DRI appears to have a bug when dealing with multiple
windows; you can see this in Performer's 'multiwin' sample shipped in
/usr/share/Performer/src/pguide/libpf/C/multiwin.c

The program gets a segmentation violation when opening up its 2nd
window & calling glXMakeCurrent.  Stack trace is as follows:

#0  0x403f0087 in XMesaMakeCurrent () from /usr/X11R6/lib/libGL.so.3
#1  0x402c739a in driMesaBindContext () from /usr/X11R6/lib/libGL.so.3
#2  0x402bf4dc in glXMakeCurrent () from /usr/X11R6/lib/libGL.so.3
#3  0x40860384 in pfWindow::open (this=0x8094e80) at pfWindow.C:2710
[...]

This call to pfWindow::open is for the 2nd window; the first one was
successful.  Same code works ok with software Mesa 3.1b3 & plain ol'
XFree 3.3.3.1

Sorry for the lack of more detailed information, thought it might be
useful to pass this along anyways.  I'll take a closer look through
the code next week..

Allan
----
Allan Schaffer                                            al...@sg...
Silicon Graphics                           http://reality.sgi.com/allan