how to update to latest openGL installation?

Does anyone have a step-by-step tutorial on how to update to the latest openGL installation? I believe I currently have opengl 1.2 and I’m trying to update it for executing a program

AFAIK this should be transparently handled by automatic updates (if you have them turned on). Or else you might check in YAST/Install software/Search OpenGL. That will list all the relevant packages and you can then check if there are any updated packages available and mark them for downloading. I suppose you’ll find the newest packages - if not handled by the default SuSE depositories - in the Packman repository.
Good luck!