HiDPI Retina Images in Mountain Lion, Already Functional in OS X Lion

ArsTechnica reports on the discovery of Retina-sized artwork in OS X Mountain Lion's.

A source with access to the latest Mountain Lion preview alerted Ars that double-sized graphics have popped up in some unexpected places, once again suggesting that Apple may be close to releasing MacBooks with high pixel-density screens.

We'd previously spotted these same Retina-sized graphics in the Lion beta of Apple's new Messages application.

As well, we've found in our testing that Apple's HiDPI mode in Lion is already fully functional and will use the Retina assets appropriately. These screens show the Lion Messages app running in HiDPI mode.

hidpib
HiDPI mode on OS X 10.7. Left: Retina enabled, Right: Non-Retina

The left image shows that Lion with HiDPI mode enabled uses the full resolution Retina artwork from the Messages app to improve the pixel sharpness of the images. When the Retina assets are selectively removed from the app (right), you can see it fall back to the normal non-Retina images bundled.

Users will be able to test this themselves to full effect when Air Display is updated to support Mac HiDPI mode on the new iPad. Apple's Messages Beta for Lion is one of the few Mac applications that are already Retina-enabled to a large degree. Some elements, such as font rendering will automatically scale upwards as it does on the iPad.

Popular Stories

Aston Martin CarPlay Ultra Screen

Apple's CarPlay Ultra to Expand to These Vehicle Brands Later This Year

Sunday February 1, 2026 10:08 am PST by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. In his Powe...
Apple Logo Black

Apple's Next Launch is 'Imminent'

Sunday February 1, 2026 12:31 pm PST by
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models. "All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
Apple MacBook Pro M4 hero

New MacBook Pros Reportedly Launching Alongside macOS 26.3

Sunday February 1, 2026 5:42 am PST by
Apple is planning to launch new MacBook Pro models with M5 Pro and M5 Max chips alongside macOS 26.3, according to Bloomberg's Mark Gurman. "Apple's faster MacBook Pros are planned for the macOS 26.3 release cycle," wrote Gurman, in his Power On newsletter today. "I'm told the new models — code-named J714 and J716 — are slated for the macOS 26.3 software cycle, which runs from...
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
We are still waiting for the iOS 26.3 Release Candidate to come out, so the first iOS 26.4 beta is likely still at least a week or two away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
14 inch MacBook Pro Keyboard

Apple Changes How You Order a Mac

Saturday January 31, 2026 10:51 am PST by
Apple recently updated its online store with a new ordering process for Macs, including the MacBook Air, MacBook Pro, iMac, Mac mini, Mac Studio, and Mac Pro. There used to be a handful of standard configurations available for each Mac, but now you must configure a Mac entirely from scratch on a feature-by-feature basis. In other words, ordering a new Mac now works much like ordering an...

Top Rated Comments

arn Avatar
181 months ago
How's that news? The Ars Lion review already had a section about Lions HiDPI mode.
all kinda old news, but you have a Mac retina app (Messages) to play with.

arn
Score: 6 Votes (Like | Disagree)
QuarterSwede Avatar
181 months ago
This is like one of those spot the difference competitions. Is there supposed to be a visible difference between the two images? If there is I can't see it lol.

‘Bout time we had some lovin for the Mac. Roll on retina Macs - just as long as they’re not so glossy I have to squint to see the image like I do now in certain lighting.
It's the silhouette that's sharp on the left and pixelated on the right.

This one shows the difference much more clearly. From another MR article (https://www.macrumors.com/2012/03/21/air-display-to-let-you-use-the-new-ipad-as-a-hidpi-retina-display-for-your-mac/).

Score: 5 Votes (Like | Disagree)
Kludge420 Avatar
181 months ago
The good news is when Apple puts the beautiful hires displays in the iMac and MacBook Pros they will finally have to put a decent video card into them by default.

The bad news is Apple will once again put in just enough horse power to drive the new display but we won't see any real improvement for gaming. Just like the iPad 3rd gen.

Of course when you're looking at a 27 inch Retina display you'll be too busy drooling for much of that to matter.
Score: 3 Votes (Like | Disagree)
neilpryde23 Avatar
181 months ago
Retina display would be awesome but I really want IPS display!!
Score: 3 Votes (Like | Disagree)
gugy Avatar
181 months ago
PLEASE!!!!:D
Larger than 30" ACD with matte screen. Come on Apple, 27" is too small. :eek:
Score: 3 Votes (Like | Disagree)
slapple Avatar
181 months ago
But is the Mac OS X any closer to having resolution independence?

I want to stop running my 1680x1050 15" MBP in the slightly blurry non-native 1440x852 resolution. (I do that because all the text at 1680x1050 looks too small.)
Score: 3 Votes (Like | Disagree)