Hi all, I have been tracking for a bug that makes my program crashing when calling function glXMakeCurrent. My program runs with multi-displays, ':0.0', ':1.0', ':1.1', ':2.0', ':2.1'. When glXMakeCurrent() is called to switch rendering context from ':0.0' to either ':1.0', ':1.1' or ':2.0', ':2.1', the program runs fine. However, if the rendering context is switch from ':1.1' to ':2.0', the program crashes with with a segmentation fault.
The interesting thing I found when debugging is the window ID and root window ID for each display: display:':0.0',screen: 0, root window id: 315, window id: 71303171 display:':1.0',screen: 0, root window id: 595, window id: 2097156 display:':1.1',screen: 1, root window id: 597, window id: 4194308 display:':2.0',screen: 0, root window id: 595, window id: 2097156 display:':2.1',screen: 1, root window id: 597, window id: 4194308 It seems that X Server 1 and 2 assign window ID with the same strategy, which is different from X Server 0. I am wondering whether it is causing the crashing, which indicates problems in X Server settings. I have been digging into the source of X Server and I cannot find how the window ID is assigned. Could someone tell me which file I should look into? Thanks a lot! Suggestions about how to debug this problem are also greatly appreciated! Yu Sheng _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
