You're better off defaulting to DX and allowing the user to switch over to GL.
Mark said that a lot of the Blitzmax/GL problems were to do with shared GL contexts - whatever those are. The bottom line was that anything you draw in GL comes out as white squares.
The last Intel driver update resolved this certainly for the GMA965 chipset and I think others too. I'm not sure you can rely on driver updates to fix the problem though, since older graphics cards might not have any recent driver updates available.
Mark said that a lot of the Blitzmax/GL problems were to do with shared GL contexts - whatever those are. The bottom line was that anything you draw in GL comes out as white squares.
The last Intel driver update resolved this certainly for the GMA965 chipset and I think others too. I'm not sure you can rely on driver updates to fix the problem though, since older graphics cards might not have any recent driver updates available.