My analysis and comments on the Retina Display were widely distorted and transformed into an attack on Apple and Steve Jobs — they were not. I simply did a quantitative analysis of what was said in the context of my campaign to eliminate (or more realistically reduce) exaggeration in display specs. Apple's claim falls under glorious wording rather than numerical spec abuse — and even with quantitative analysis it's minor compared to what other manufacturers are saying. I sent Steve Jobs an Email explaining that and got a reply from him.
I got an iPhone 4. A DPI this high is indeed pretty rad. I've never seen text that looks this good. I just want to know why my fricking two thousand dollar laptop can't do this. For many years things were stuck at <>>
300 DPI @ 15 inches using a 1.6:1 display would be quad HD (3840x2400). For those of your playing the home game that's 70 megs for a 32-bit double buffered frame buffer before even considering the massive texture sizes required for the windows themselves in any sort of backing store.
The iPhone 4 in comparison uses 4.6 megs for a double buffered frame buffer and doesn't really require a backing store because there's not multiple windows to composite.
That's texture memory, though. It's not for pixel resolution. Graphics cards don't push out, say, a 1600x1200 bitmap however many times a second. They draw shapes with textures on them.
Look at it this way. 3640x2400x32 is 294,912,000 bits of data per frame. To get 30 frames per second, you need to be processing 8.8 billion bits per second. Even assuming determining what a single color in a single pixel should be is something you can map to a single processor calculation, not a lot of systems can operate in the 8.8ghz range.
« Older For the original 1963 airing of Doctor Who, compos... | As translation contretemps go,... Newer »
This thread has been archived and is closed to new comments
Buy a Shirt