CentOS - Jun 2014 - 3D Acceleration with Matrox MGA G200EH?

I'm running on a machine with a Matrox MGA G200EH but it doesn't appear
that the 3D acceleration is being used (for example Google Earth lists the
driver as being Mesa). Is there an additional driver that I need to install
to enable the 3D acceleration functionality? Or something else I need to do?
Thanks,
Dave