rMBP scaling at 2880x1800

mogallin

macrumors member
Original poster
Jul 21, 2008
58
0
When using one of the many available apps to run the rMBP at its native resolution instead of as a retina screen, will it still render at twice that, like with 1920x1200, and then downscale it? Or will it render straight to 2880x1800. The former case sounds to me like a huge hit to the performance.
 

stevelam

macrumors 65816
Nov 4, 2010
1,215
3
no retina scaling at 2880. but because of that, everything becomes way too small to be usable.
 

Stetrain

macrumors 68040
Feb 6, 2009
3,548
18
Depending on the resolution switcher, it will show "(HiDPI)" next to modes that are doubled.

For example, "1920x1200 (HiDPI)" is actually 3840x2400, but just "1920x1200" is 1920x1200".

Selecting just "2880x1800" will run at 2880x1800.
 

FroColin

macrumors regular
Jun 4, 2008
150
0
Not in a million years.
Challenge accepted.

I do have a question regarding resolutions though. If you run one of these retina displays at it's full resolution with no scaling, is that harder or easier on the graphics card or does it make no difference?
 

Stetrain

macrumors 68040
Feb 6, 2009
3,548
18
Challenge accepted.

I do have a question regarding resolutions though. If you run one of these retina displays at it's full resolution with no scaling, is that harder or easier on the graphics card or does it make no difference?
Should be basically the same at 2880x1800 'native' and at 1440x900 HiDPI (which is also 2880x1800).

The 1680x1050 HiDPI and 1920x1200 HiDPI modes however take more GPU power than native 2880x1800.
 

ryane67

macrumors member
Jun 13, 2012
75
0
no retina scaling at 2880. but because of that, everything becomes way too small to be usable.
As obi-wan once said - you will find that many of the truths we cling to depend greatly on your point of view

I find 2880x1800 extremely nice when using photoshop & lightroom. pixel for pixel images with a UI that is still there but basically out of the way. I think I'll still be using these programs at native rez once they are updated for retina.
 

mogallin

macrumors member
Original poster
Jul 21, 2008
58
0
Thanks you for all your answers. Based on several of them I gathered some courage and installed resolutiontab, and it seems like it does indeed render at 2880x1600 instead of 5760x3200 as I feared (based on a screenshot which comes out at 3840x2400 in 1920HiDPI mode).
 

nontroppo

macrumors 6502
Mar 11, 2009
430
21
Should be basically the same at 2880x1800 'native' and at 1440x900 HiDPI (which is also 2880x1800).

The 1680x1050 HiDPI and 1920x1200 HiDPI modes however take more GPU power than native 2880x1800.
Correct, I've measured this and WindowServer uses about 0.75% more CPU overall during UI redrawing.
 

playsontheleft

macrumors regular
Jul 2, 2012
126
0
no retina scaling at 2880. but because of that, everything becomes way too small to be usable.
For you. I don't remember the last time I wasn't running 2880x1800 other than when messing with some non-HiDPI modes to see what it was like.

I do have a question regarding resolutions though. If you run one of these retina displays at it's full resolution with no scaling, is that harder or easier on the graphics card or does it make no difference?
Easier because the computer doesn't need to carry out any scaling routines. Not that it's a particularly noticeable difference, but it's there.
 

stevelam

macrumors 65816
Nov 4, 2010
1,215
3
For you. I don't remember the last time I wasn't running 2880x1800 other than when messing with some non-HiDPI modes to see what it was like.
well obviously some people out there will always do stupid/silly things. i'm not speaking for those folks. and congrats on wasting your money on a screen you're not even utilizing.
 
Last edited:

alphaod

macrumors Core
Feb 9, 2008
22,164
1,209
NYC
I have my computer set whenever say Photoshop or Lightroom opens up, the resolution is changed to 2880x1800 non-HiDPI (native). Sure the tool bar looks small, but my images looks perfect. Until Adobe and others update their applications, I will have to live with this. Some things like Word looks fine. I've seen worse with text, but I can't work with blurring images.

well obviously some people out there will always do stupid/silly things. i'm not speaking for those folks. and congrats on wasting your money on a screen you're not even utilizing.
Did you quote the wrong person? :confused: