[SDL] Beginner question: OpenGL surface just as part of SDL window

[Jörgen Kornfeld]

Hi all,
is it possible to place in one window (or fullscreen) 4 different views 
on some data? So 3 ones should display 2d slices and the fourth one 
should be opengl rendered. Easy to do or are sluggish work-arounds required?

Thanks a lot,
Jörgen