Recent versions of SDLMAME don’t get along well with Intel-based Macs using the Intel GMA950 graphics chip, to the extent that OpenGL was slower than software mode. This patch should correct the problem – it takes OutRun from 30 to 100 FPS in OpenGL mode on my 1.66 GHz Mac Mini. Thanks to arekkusu and Apple’s “CHUD” profiling tools for pointing me in the right direction.

If you’re using ATI’s fgrlx drivers on Linux and are sobbing over the inability to use SDLMAME in OpenGL mode, try this patch (actually a few replacement source files) for SDLMAME 0.110 which should get things up to speed again (Thanks to Antoine Mine). Please report if the patch works for you on the board.