I don't understand why you are lost for words when this information identifies your graphics driver as a "Prototype" driver. Why would you be surprised when an issue comes up in a graphical app when using a prototype driver to begin with?
Why don't you download and install the most current stable officially supported OS X driver for that card, assuming one is available, and then see how it goes? Hopefully that would cure your problems and you could go on to enjoy the game. As long as you are not running a stable supported OS X driver release, you cannot fairly expect the game to work properly nor Feral to have tested that configuration never mind support it. That just isn't a fair thing to expect of them.
The beauty of the Apple Macintosh world is standards - both hardware and software. This is what makes things "just work" typically. Mess with that and all bets are off, you know?
Thanks for your input but this over now, sorted out sort of.
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