iOS 4 Anti-Aliasing Demonstrated in both 'Real Racing' and Upcoming iPhone 'Zen Bound 2'
posted June 23rd, 2010 3:31 PM EDT by Eli Hodapp in Games, iPhone games, iPod touch games, Upcoming Games
While we're all busy fiddling with multitasking and obsessively organizing our apps in to folders, developers are hard at work to fully utilize all the other things under the hood of iOS 4. Firemint and Secret Exit are among the first studios taking advantage of iOS 4's new anti-aliasing capabilities.
Anti-aliasing is used to minimize jagged edges found in curved and diagonal lines displayed utilizing the grid of square pixels that make up the displays we use today. Using anti-aliasing, the GPU of the iPhone intelligently decides what color to display on pixels that border the edges of 3D objects to make them blend in to the background and appear more crisp.
As you can see from the above image, the A on the left has no aliasing, while the edges of the A on the right have been blended with the background color. This is a gross over-simplification of how anti-aliasing works, but if you weren't aware before it will at least give you an idea of what you're looking at in the following sets of screenshots:
The effects of the anti-aliasing is incredibly apparent when you focus on the bill of the duck in both images. Secret Exit also posted additional screenshots in our forums, and in a second post explaining the technical details of anti-aliasing in Zen Bound 2 which mentions the performance cost being too high to utilize the effect in older devices.
In somewhat related Zen Bound 2 news, they also announced that it will soon be available on multiple platforms. Joining the existing iPad Zen Bound 2 [$4.99] is an upcoming iPhone, iPod touch, PC, and Mac version. Recent MacBook owners will be able to use the multi-touch trackpad or even a Magic Mouse to control the game just like the iPhone.
Real Racing [$4.99] saw an update yesterday which not only made the game iPhone 4 friendly complete with high resolution graphics, but also brought anti-aliasing to the iPhone 3GS and 3rd generation iPod touch. It might not have been immediately obvious when you fired up the game since updating, but take a look at a screenshot I took today compared to a screenshot captured for our our review over a year ago:
Looking at the line following the top of the dashboard, the A pillar of the car, and edges of the banner over the makes the new anti-aliasing really pop out comparing the two screenshots. This is only the tip of the iceberg, too. Now that new features like this have been unlocked for developers, it should be really fun to see what they come up with.
Anti-aliasing being supported by the iPhone 3GS and 3rd generation iPod touch is also good news for people who might not be immediately upgrading to the iPhone 4. While you'll obviously be lacking the Retina Display, if developers start implementing anti-aliasing in all their 3D games, everything will look substantially better on your existing device without needing to do anything other than download some game updates.
