   glViewport size and framebuffer size
  (This question sounds like it should have an obvious answer, so the fact that I don't understand it means there's something deeper and more fundamental that I'm not getting. None the less...)I'm trying to get a multisampled framebuffer working. I'm using code fromhere and here. But I'm at the line where it saysglViewport(0,0,width,height);do I put the screen width and height, or the buffer width and height? Thanks for your help   
  It's the H/W of the FBO.   