Detect if OpenGL is present/works?

BlitzMax Forums/BlitzMax Beginners Area/Detect if OpenGL is present/works?

Just a small note of caution...

My Blitzmax game runs very slow on my girlfriend's PC under DX (PC is below spec for the OS (WinXP) let alone running anything on it, but anyway...).

Under GL, it fails completely. I don't have the PC here so I can't investigate further for a couple of weeks.