I just tested a Mac app out using Quartz Debug to see how it looks on retina. Sadly, both of my Macs are non-retina so Quartz Debug is my only option. (I'm using Cocos2d v2.1).
In quartz debug most sprites are coming in grainy and TTF labels are shattered to pieces. Is this a Quartz Debug thing? This app is destined to be rejected if it actually shows up like this on a retina Mac. Can anyone out there with an already retina good Mac app test in Quartz Debug and let me know?