[osg-submissions] FrameBuffer Antialiasing

[Robert Osfield]

Hi Paul,

I have just started viewing your changes.  The fact that they are all
done against 1.2 does rather complicate the process as that have been
many changes since 1.2 so its much harder to spot just the changes
that are made by you.  I am having a bash at the review though, my
guess is that some things we should be able to pull in without too
much difficulty other parts we'll have to rewrite from scratch.

The main thing that's I'm a bit perplexed is in your RenderStage
modifications, why you have introduced another FrameBufferObject
member variable just for doing the multi sample support rather than
reuse the existing FBO object.  What is the motivation behind this?

Also could you provide your full name so that I can use this in the
properly attribute the submission to you.

Thanks,
Robert.