X Windows desktop

[tbc++]

If I have a multi-card X windows installation is there a way to set which display my OpenGL program renders on? I think the X devices are named somthing like 0:0, how do I pass that to OpenGL?

tbc++

[amendol]

you can do this by setting your "DISPLAY" environment variable. If you have two X servers on localhost, and want to display your GL app on the first then do this:

export DISPLAY=localhost:0;
./glapp;

on the second,

export DISPLAY=localhost:1;
./glapp;

"export" is the command you use in the bash shell.

[tbc++]

If I wanted to display it on both, could I create a batch script and run the program twice, once for each display.

tbc++

[jide]

I think XOpenDisplay allows to specify which display to connect on. man could help you more.