Blurry bitmap after flip transition; safe to modify for landscape mode?

[davetroy]

Hey there, I'm not sure if these are issues with your code or mine, so thanks in advance for putting this project out there at all.

I'm noticing that if I do a Flip transition (per your code) back and forth between two view controllers, the text in those view controllers will become blurry and the whole image becomes degraded. Rotating to landscape (forcing a redrawing of the cells, in a collection view) doesn't fix it, even though the cells are redrawn from scratch.

That brings me to my second point, which is using the Flip transition in Landscape mode. I'm imagining this should be possible by addressing the geometry, but I'm wondering if you know of any reasons why doing that would be hard or bad.

Thanks much!

Update: also noticing this same blurring in the CETurnAnimationController.