Achieving Retina

To make the MacBook Pro’s Retina Display a reality Apple had to work with panel vendors to build the panels it wanted at a reasonable cost, as well as deliver the software necessary to support insanely high resolutions. There was another problem Apple faced in making the rMBP a reality: the display pipeline of the GPUs Apple wanted to use didn't officially support scaling to the resolution Apple demanded of them. Let me explain.

All modern GPUs have fixed function scaling hardware that is used to efficiently scale between resolutions. A scaler either in your GPU or in your display panel is what lets you run non-native resolutions at full screen on your LCD (e.g. running 1680 x 1050 on a 1920 x 1080 panel). None of the GPUs used in the Retina Display MacBook Pro officially support fixed-function scaling of 3840 x 2400 or 3360 x 2100 to 2880 x 1800 however. Modern day GPUs are tested against 2560 x 1440 and 2560 x 1600, but not this particular 5MP resolution. Even 4K resolution support isn’t widespread among what’s available today. Rather than wait for updated hardware and/or validation, Apple took matters into its own hands and built its own GPU accelerated scaling routines for these higher resolutions. Fixed function hardware is almost always more efficient from a performance and power standpoint, which is why there’s some additional performance loss in these scaled resolution modes. 

What’s even crazier is Apple wasn’t pleased with the difference in baseline filtering quality between the Intel HD 4000 and NVIDIA GeForce GT 650M GPUs. As the Retina Display MacBook Pro would have to regularly switch between GPUs, Apple wanted to ensure a consistently good experience regardless of which GPU was active. There are a lot of filtering operations at work when doing all of this resolution scaling, so rather than compromise user experience Apple simply wrote its own default filtering routines. Since you want your upscale and downscale quality to be identical, Apple had to roll its own implementation on both. Apple’s obsessive attention to detail really made it possible to pull all of this off. It’s just insane to think about.

The Software Side of Retina: Making it All Work Driving the Retina Display: A Performance Discussion
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  • OCedHrt - Sunday, June 24, 2012 - link

    1) That's probably Canada. It is $1599 base in US for a while now and I got mine for $1100 after tax.

    2) Another Canada thing. But I agree, Sony is too inflexible.

    3) That is by design. There is a video online with an interview where they explain it. This means you can grab your laptop by the screen and not risk damaging the hinges / screen. If you grabbed your MBP Retina by the display I'd be wary of breaking it.
    Reply
  • ThreeDee912 - Saturday, June 23, 2012 - link

    There's more to a computer than its hardware spec sheet.

    You can rattle off a laptop spec sheet with a good CPU, GPU, SSD, screen, etc., but if they're not integrated very well with everything else, or have mediocre software support, you can't always take advantage of those specs without some tacky workarounds.
    Reply
  • gstrickler - Sunday, June 24, 2012 - link

    ^^^ I'll second that. Also, the right balance of specs matters more than "this spec is greater than that spec".

    If the keyboard, trackpad, or display sucks, you'll hate the computer no mater what the specs say. If it's too fragile, or heavy, or cumbersome, you won't want to carry it. If the software is slow and bloated, it won't matter that you've got 8GB RAM and a quad core i7, it can still feel sluggish.

    The satisfaction with a computer is far more than just it's specs, or individual components, or even it's operating system. It's having the right combination of everything.
    Reply
  • OCedHrt - Sunday, June 24, 2012 - link

    1) This is dependent on user. i don't care about the 1" vertical, it's really the # of pixels that matter.

    2) The previous Z had discrete built in. The purpose of making it external is to achieve the 2.5 lb form factor. Sony once had a 11" 1.6 lb netbook. That is literally the holy grail in terms of weight for a portable laptop. The move to external discrete is really a step in that direction.

    3) You can output more than 1920x1080 on HDMI.

    4) 15" is too big for me, even at 2.5 lbs. Not everyone wants a huge screen on their lap - that's why I have a monitor on the desk.

    5) Yes, at 2.5 lbs and 13", there's limited space for heat dispersion.
    Reply
  • maratus - Sunday, June 24, 2012 - link

    Unfortunately, Z tops at 1920x1200 through HDMI or single link DVI on the dock station. It was a dealbraker. Now rMBP ability to drive 2x 2560x1600 and 1x 1920x1200 is simply overkill for me, I'm still confused why did Sony stuck with HDMI only and didn't even bother to provide DP, mDP or 2L DVI as a second port. Reply
  • OCedHrt - Monday, June 25, 2012 - link

    That's typical Sony (Japanese) stupidity. Reply
  • Chava - Friday, June 29, 2012 - link

    That's typical Japanese stupidity...

    Yeah for some reason you thought that was acceptable.
    Reply
  • Solandri - Saturday, June 23, 2012 - link

    The chassis isn't thinner than the 13" 2010 MBP (it tapers from 1.0-1.3" vs the MBP's 0.95"). Its other two dimensions are smaller though (12.4" x 8.3" vs 12.8" x 8.9"), and it's lighter (lighter than the 2010 Macbook Air in fact) at 2.9 lbs (some models were 3.04 lbs, never figured out why). Sony managed this by using a lot of carbon fiber and a really thin screen. So it's not as stiff as the solid block of aluminum that the MBP used. But the keyboard bezel is solid aluminum making it very stiff.

    http://asia.cnet.com/sony-vaio-z-sports-worlds-fir...
    http://www.pcpro.co.uk/reviews/laptops/355384/sony...

    Here's the only marketing brochure I could find for the model being discussed (in French):
    http://www.mgmi.fr/docs/pdfprod/VPC-Z11Z9E-B.pdf
    Reply
  • OCedHrt - Sunday, June 24, 2012 - link

    That's the 2008 Z. 2008. The 2011 Z is a non tapered design:

    13.0" x 0.66" x 8.27" (WxHxD)
    330mm x 16.8mm x 210mm

    The MBP is 50% thicker than the Z. It's understandable given that it is 15" instead of 13".
    Reply
  • Freakie - Sunday, June 24, 2012 - link

    http://www.tomshardware.com/news/sony-vaio-z-quad-...

    Here you go. THIS is true innovation. Sony did amazing work with this version of the Z to get all the functionality of a bigger laptop into a tiny package. It is even more impressive when you think about how old, hot, and power hungry the CPU/GPU was back then. Sony has innovated much more in the laptop industry than Apple has, in my opinion. Though I still wouldn't want a Sony like this just like I wouldn't want an Apple like the rMBP (user upgradability and repairability is virtually non-existant, which is an instant deal breaker for me, it was hard enough buying a laptop with a 540M integrated onto the mobo, could never buy a laptop that didn't even let you upgrade storage)

    Here's a more detailed teardown: http://translate.google.com/translate?js=y&pre...
    Reply

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