NSScrollView with layer-backed subview - sync problems on resize

FROM : Lucas Gladding
DATE : Mon Mar 24 04:51:49 2008

I have been working with a layer-backed view hierarchy nested in an 
NSScrollView.  The layer-backed view is backed by a CAScrollLayer (to 
get around the texture size limitation that causes the fade in effect 
on the layer-backed view).  If I am scrolled to the top of the 
documentView in the NSScrollView, however, the view jumps by several 
pixels while resizing the NSScrollView.  If setNeedsDisplay: is 
called, everything redraws and displays as intended.  The problem is, 
the view always jumps before the setNeedsDisplay is called and the 
view always skips.

My question: does anyone have any recommendations about how to set up 
a large layer-backed view nested inside an NSScrollView (or something 
else to accomplish the same effect)?  Also, has anyone else 
experienced the aforementioned problem?

If necessary, I can post a screencast showing the problem.  Hopefully 
the problem mentioned above makes sense.

Thanks for your help

Luke Gladding