   FBO and your personal experiences
  I have been using FBO's for awhile now and have come to the conclusion that speedwise its the same as glCopyTexImage... Only thing I guess I have gained from this is the ability go larger than my screen size for my engine. I was wondering if everyone else who is using FBO's are seeing the same thing or not. I am on a 7800GT, Athlon64 X2 3800+. I have tried using mipmaps and found that not using mipmaps actually gave me a speed boost around 3-5fps...   
  I just implemented an FBO yesterday but I'm not using for the primary purpose (trying to do a video texture), but I'm curious if you or anyone else had better performance with a pbuffer?  For me, performance is exactly the same as drawing straight to the screen, but I can't really expect much more since I'm not rendering to the FBO.  I guess the good news is I don't get a performance hit, even though there could be an extra copy involved (from memory to FBO, then to the card).Only reason I tried it is people suggested I try a pbuffer, and, well, those are a pain especially in Linux, so I thought I'd try the latest and greatest first.   ;  I've noticed a "small" performance gain from using FBO.  Almost inmeasurable, but that's probably just from cutting out some of the overhead of actually having to do the calling of the glCopys.  I do enjoy the flexibility and ease of use, once they are working correctly.   