xscreensaver-gl-helper man page
xscreensaver-gl-helper — figure out which X visual to use for GL programs
xscreensaver-gl-helper [-display host:display.screen]
This program prints the ID of the visual that should be used for proper operation of OpenGL programs. This program only exists so that the xscreensaver(1) daemon does not need to link against the OpenGL library.
to get the default host, display, and screen number.
X(1), xdpyinfo(1), xglinfo(1), glxinfo(1), glxdpyinfo(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-command(1)
Copyright © 2000 by Jamie Zawinski. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.