gamma/PSStackedView — comment on commit 73cfe54051d6f6d8188ce8bf85e3a1e3d0ad98cb
File:  line 0
By steipete:

Yes. When you look closely, you'll notice that even the Twitter/iPad app fakes their rounded corners. It's just too expensive and jerky to use off-screen-rendering for it. Just use a small image (with the app I built, i used a header image that has rounded corners)