title: Resizing SDL OpenGL window
body: <p>When I issue <code>glViewport</code> with my new resolution it does not seem to update the size of the (front and back) framebuffer. My FBO's seem to handle the resize just fine because I just re-create my FBO texture with the new size. </p>
  
  <p>Is there something I'm missing, or is this sort of thing simply not supported on Linux? I'm trying to avoid calling <code>SDL_SetVideoMode</code> so I can hold on to my OpenGL context. </p>