[PlayerStage-Gazebo] ATI PBuffer...

[Brendan B. <bb...@cs...>]

Hey Folks,
At least using the proprietary fglrx drivers from ATI, the pbuffer 
extension works.  It requires slightly different code.  A patched 
version of GLContext.cc is attached...  Change renderMode to "ATIX"

Works for me on a Dell Optiplex GX280 w/ ATI Radeon x300 using the 
3.14.6 driver.

It seems that this version of the PBuffer stuff is part of the OpenGL 
1.3 spec, so it should work on any driver supporting the Spec, but I'm 
not sure...

--brendan