Saving and restoring image in a view *without* using a nav controller?
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I'm writing an OpenGL app which draws trails/strokes by not clearing the frame buffer from frame to frame (it just lets everything accumulate on top of itself, which is what I want).

The app has a Settings screen.  You access it by tapping a button.  After you're done with the settings, it returns to the graphics.

Here's the problem:  I can't figure out how to transition from the settings back to the graphics without losing what was in the frame buffer.  The app is sort of a painting toy. You'd like to be able to paint, go to the settings, and then return to what you were doing without the screen clearing and deleting your work!


If I used a NavigationController all of this would be taken care of (I've tried it -- works perfectly!) 

Problem is, I don't want the ugly, bulky nav bar thing on the top of my screen. But, you have to take the nav bar if you want the nav controller.


Any ideas?

Thanks.
