As an iPad/iPhone game dev who has already weighed in on this discussion last week in a different thread (see
https://forums.macrumors.com/search/?searchid=22517339), I thought I'd jump in to provide a developers perspective on this that might be interesting to everyone in this discussion:
First off, let me say that if Apple does manage to pull off a 2048x1536 resolution (and pull it off properly), then the iPad 2 will without doubt be the most amazing gadget I've ever had my hands on, and I would be tremendously excited about the ideas of what you could do on such a platform.
That being said, I'm unforunately still very pessimistic about the odds of this actually happening.
First, it seems like a safe bet that the iPad 2 will be based on the PowerVR SGX 543 GPU (e.g.
https://www.macrumors.com/2011/01/1...-opencl-capable-sgx543-gpu-in-future-devices/), which roughly doubles fillrate (from 500 megapixel to 1 gigapixel) while increasing poly throughput from 28 million to 35 million. I'm a developer and not a hardware guy, so I don't know if you could push those numbers much further with a multi-core configuration, but doubling the fillrate seems reasonable to me, and would give the iPad a much-needed push: It is certainly not the case, as people on here have suggested, that "geometry takes up 85% of the processing power and pixel pushing takes up the remaining 15%" - that may very well be the case for current-generation PC or console games, but the iPad has been strongly fill rate limited from the start, and I would say that most developers would see this as the iPads major problems (do a google search for "ipad fill rate" to see what I mean); indeed, even 2D games can at times be tricky to pull off at maximum performance due to this limitation, so I'm pretty sceptical about what would happen if you had to push four times as many pixels as before on a GPU that seems to deliver only about twice the fill rate.
On the other hand, perhaps the double resolution is not intended to be used for games but mainly for web browsing and anything involving a lot of text in the first place, and I can confidently say that I think that a game running at 1024x768 with strong anti-aliasing (something that's not doable on the current generation hardware) scaled up by a factor of two would still look a lot better than what we're currently seeing on the iPad - I think most people strongly underestimate the influence of good anti-aliasing as compared to what you get by doubling the resolution.
My major argument against the iPad 2 delivering such a resolution increase is that while it would be a technological miracle and surely drive up production costs significantly, the incremental sales Apple would achieve with this (as in "how many more people would buy a high-res iPad 2 with camera, more memory, etc. compared to the same iPad 2 but with an only slighty improved screen") definitely wouldn't make up for what Apple would be losing in terms of margins.
None of the competitors are offering this as one of their main selling points, and a strongly evolved (more power, more storage space, camera for facetime, etc.) but not revolutionized iPad 2 at the same price point seems like a very strong offering, so even if they could pull it off from a technological point of view, they'd probably be much better off keeping that ace up their sleeve for next year's offering, don't you think?
On the other hand, perhaps they've decided to instead go for an approach of "shock and awe", and that certainly is what a ultra-high res iPad would be delivering to the competition...
As to what the "iPad2x" graphics files in the latest version of the SDK are supposed to mean, I think there are a multitude of possible answers:
- it's something they've decided to put in now to drum up a bit of hype (unlikely, as they in that case would already know that they won't be able to live up to this particular hype) or to keep competitors guessing at this point in time (more likely),
- they're intended for a Displaylink/HDMI out that should arrive eventually and deliver 1080p
- they're intended for a later version of the iPad which eventually will feature a much higher display resolution
- in order to improve usability, some apps might simply start offering higher zoom levels, which would also mean that higher res artwork will be needed
- etc.
The nice thing about our guessing game is that we'll (hopefully) soon know what the iPad 2 truly does offer.
My best guess at this point is that the screen will be of the same resolution that we currently have, but with less susceptibility to smudging and less glare, but no fundamental changes - those will come eventually, but now is not yet the time.
To make this (and the eventual keynote) a bit more interesting, I'd like to offer a bet to anyone here who's interested and especially to anyone convinced that we will indeed see an iPad 2 with a 2048x1536 resolution:
I'd like to bet an iPad 2 that the resolution on this device will NOT be doubled both horizontally and vertically, i.e. that the iPad 2 will NOT have a resolution of 2048x1536. The odds are 1:1 - if you take the other side and Apple does pull this off, I'll gladly buy you an iPad 2. If they don't, however, you buy me one.
Here's your chance to put your money where your mouth is - anyone in?
