[GEM-dev] FSAA on OSX

[chris clepper]

Hi

I just committed a bit of code to enable Full Scene Anti-Aliasing on 
OSX.  The gemwin now takes a message 'FSAA x' where x = 2,4, or 8 is 
a valid value.  This has to be set before creating the gemwin as the 
values are passed as context creation flags.  The message should be 
harmless on all other platforms.

The results aren't exactly perfect on a Radeon 9000 even at 8x, but 
the good news is that appears to be little to no performance hit at 
that setting.  More testing is needed of course.

cgc