[PD] gem -- antialiasing?

[Samuel Burt]

So, knowing about antialiasing is making me very excited.  I just  
tried it on a MacBook Pro (Nvidia onboard graphics) in OS X.

With FSAA 0, I had no antialiasing.
WIth FSAA 1, I could see the jagged line effect reduced.
With FSAA 2, I could see double the antialiasing effect.

Past FSAA 4, I couldn't ascertain whether there was any difference.

I'm wondering if this is documented anywhere.

Also, I noted a huge drop in framerates when running antialiasing with  
a patch I made with seven regions of video feedback.  I will have to  
try it later with the dedicated Nvidia graphics card running.

I'm still wondering if it is possible to add blur to layers or create  
lens focus blur with Gem.

Sam