Though Apple has not officially enabled Retina Display emulation on the iPad, certain recent iPhone and iPod touch applications have started to display artwork in higher resolutions on the iPad screen, iLounge has discovered. Normally, iPhone and iPod touch applications run on the iPad in an emulation mode limited to the native 320×480 resolutions of Apple’s prior-generation screens. Users can optionally hit a “2X” button that merely increases the size of each dot from 1×1 to 2×2, resulting in pixellated images. Applications designed for the Retina Display on the iPhone 4 and iPod touch 4G have fared no better, still presenting the lower-resolution graphics designed for the older models.
Recently, however, some new applications are displaying higher-resolution assets when rendered in the iPad 2X mode. The most notable example is Napster, an iPod touch- and iPhone-formatted application without a native iPad mode. Although most of the user interface elements in the Napster app are clearly being scaled up when seen in 2X mode on the iPad, the album artwork is clearly being displayed at a higher iPad-native resolution. iLounge editors have observed several other recent iPhone and iPod touch apps showing similar behaviors, whereby some—not all—assets are being rendered in higher resolution when displayed on the iPad in 2X mode. It is unclear at this time whether developers have found some way to provide this capability or whether it is a function of compiling applications with the recently released iOS 4.1 SDK, but it is a positive sign that the iPad’s seemingly limited iPhone and iPod touch emulator is capable of more than it previously demonstrated.