The FBO is used in my Mobile 3D viewer.(iPhone)
The base of this application is from the book 'iPhone 3D Programming Developing Graphical Applications with OpenGL ES'.

The anti-aliasing is also implemented as the book introduced.(Super Sampling)

These day, I'm trying to apply it to iPad.

Then, can I resize the FBO for horizontal display?(Landscape mode)
At first, I tried a tricky way to rotate camera as +-90deg. :P

but, it is just tricky and has many limitations to use UI that is automatically rotated.

Remove all FBO, and then remake all of them horizontally again?

Any comments would be helpful for me.
Thank you.