I believe SetGraphicsDriver exists for future compatibility - if that makes sense. OK, so at the moment only an OpenGL renderer exists for Linux, but I believe there are one or two people working on wrappers for other drivers or drivers in their own right, a software renderer, for example. There was a thread around here somewhere that mentioned just such a thing.
For the moment, just use it for Windows' versions to either enforce or allow selectivity of one API or the other.
For the moment, just use it for Windows' versions to either enforce or allow selectivity of one API or the other.