Hi! Here is layout I'm going to use in my game.

The 3D window is this only red SQUARE.

All other parts around red suare will be non-transparent 2D Panels.

I wonder... Will game work faster, if I use small portal view for my 3D game, and some other view to draw 2D panels, which will not draw 3D at all.

Or, all geometry behind panels is culled automatically by engine, and will not affect render speed?

The main idea I'm thinking of is:

If I draw 3D only for 715X514 window, but not 1024X786, all will work much faster. Is it true in my case?