Heavy banding on gradients

BlueScreenJunky · May 12, 2011

So I just installed "the impossible game" on my brand new SGS2 and discovered there's some banding on the gradient in this game, which was not here with my Nexus One (AMOLED).
Has anyone else noticed that ? do you think it can be fixed later on (I know supercurio did some work on the first SGS's rendering) ?

edit : I'm only talking about the horizontal banding (the circular moiré is caused by the glass and visible only on the camera). Also I tried changing the brightness and background rendering but nothing helped.

BlueScreenJunky · May 12, 2011

So I'm the only one experiencing that ?

I hope my phone is not faulty because I've already rooted it so I guess I can't return it anymore :-/

Rumble6059 · May 12, 2011

BlueScreenJunky said:
So I'm the only one experiencing that ?

I hope my phone is not faulty because I've already rooted it so I guess I can't return it anymore :-/

not got that app i'm afraid...if it was just you then you can always flash back to the standard o2 sortware, removing the root. then using a jig remove the custom binary count...thus restoring your warranty

Rumble

dinan · May 12, 2011

Try checking the loading screen for the XDA app. It should be a nice gradient of brown but I remember it was HEAVILY banded on the Atrix.

Roger should chime in with more info on this =)

murklor · May 12, 2011

No need to use an app to test:

http://www.lagom.nl/lcd-test/gradient.php

I find it hard to believe that they've gone through all that to make the best display in the field and then limited it to 16bit colors (I believe super amoled has 24bit?)

LarcusMywood · May 12, 2011

Phew, it's not just me! The two things I'm disappointed with on this phone are the screen issues and the battery life. Other than that, it's incredible.

Let's hope for major firmware upgrades and dev support!

BlueScreenJunky · May 12, 2011

murklor said:
No need to use an app to test:
http://www.lagom.nl/lcd-test/gradient.php

Thanx for the link. And of course we don't need to test on an app, I just happened to notice on this particular game, and thought it was best to avoid comparing with the browser or gallery since they could be faulty themselves (the gallery used to cause banding on the Nexus One).

I really hope it can be fixed later... I keep reading the screen is fantastic, but it doesn't look so good now (maybe it's better than pentile Matrix though)

LawAce · May 12, 2011

I don't have a SGSII but you are certainly not alone, I've read a lot about this banding issue - remember reading somewhere about the possibility that it may infact be 16bit at the moment.

RogerPodacter · May 12, 2011

dinan said:
Try checking the loading screen for the XDA app. It should be a nice gradient of brown but I remember it was HEAVILY banded on the Atrix.

Roger should chime in with more info on this =)

heh well i'll give my unofficial opinion is that your nexus one is running the latest 2.3.3 GB which fixed the nexus one's 16 bit color banding issue. did that game show banding on your nexus one last year?

anyway my opinion theory is the super amoled plus screen is still not 24 bit color yet, probably only 16 bit like the n1 was. i cant prove this though, so take as you wish.

the nexus one on the XDA app, the spalsh screen showed lots of banding for all last year. after the 2.3.3 update the banding is finally gone on the nexus one. and google admitted that the 2.3.3 update finally brought the n1 up from 16 bit color.

so my guess is the new amoled+ wasnt finalized yet, like the n1 originally, so the SGS2 is only 16 bit color in its current firmware version.

flooki · May 12, 2011

Very disappointing, I'll stay away from the phone for now and I hope they'll fix this as soon as possible! I feared that something like this would happen when I saw the GLBenchmark data (or something like that, which stated that it's 16-bit anyway). Good to hear that the N1 had the same problem and it got fixed, though!

LarcusMywood · May 12, 2011

flooki said:
Very disappointing, I'll stay away from the phone for now and I hope they'll fix this as soon as possible! I feared that something like this would happen when I saw the GLBenchmark data (or something like that, which stated that it's 16-bit anyway). Good to hear that the N1 had the same problem and it got fixed, though!

It really isn't that noticeable, you can't see it under normal use when you're holding the phone at a normal distance.

BarryH_GEG · May 12, 2011

Totally liveable in the short run knowing that it will get fixed. From the speed and quantity of updates, I'm guessing Samsung's trying to repair the black eye they got for pretty much ignoring the SGS.

Raymond77 · May 12, 2011

LarcusMywood said:
It really isn't that noticeable, you can't see it under normal use when you're holding the phone at a normal distance.

I disagree, it's very noticeable when you have any image that has a gradient. Every time I load up the XDA app, or fire up Stupid Zombies, it's right there plain as day.

Very annoying.

earthdome · May 12, 2011

yeah. it's plain obvious. for that game, i have to set the quality to low, so that the banding disappears

alexcarterkarsus · May 12, 2011

omg, you got to be kidding me... even my android-loaded HD2, which is definitely suffering from a hardware limit of 65536 colors, shows less banding, much less shall I say, than this supposedly 16M colored monster?? :-(

RogerPodacter · May 12, 2011

this issue wouldnt stop me from keeping the SGS2. but there were lots of specific test images used on the nexus one to highlight the issue.

in fact here is the article with test images you guys can try on your SGS2. at the time of this article, the pentile pixel matrix was the highlight. but a year later the 2.3.3 update kinda proved that the banding was NOT related to the pixels, since its totally fixed now.

interesting read nonetheless.
http://www.displaymate.com/Nexus_One_ShootOut.htm

BlueScreenJunky · May 12, 2011

After testing a bit more, the photo I took in the first post is THE most obvious case of banding I could find. The gradient in xda, or the one at http://www.lagom.nl/lcd-test/gradient.php are not perfect, but they don't look THAT bad.

edit : And yeah, it's not enough for me to return the phone, and I'd buy it again knowing that, but it's still annoying, especially since they insisted so much on the quality of the SAMOLED+ screen.

dinan · May 12, 2011

It's purely a software bug. I'm almost certain the physical display can handle these gradients.

On my Nexus One/S if I view that sunset on mars photo in the stock android gallery I get all that banding. If I use another gallery like QuickPic, no banding at all.

It's a similar bug when setting home page wallpapers. You get quite a bit of banding doing it the stock way, but using wallpaper set & save to set the background eliminates banding.

mathieulh · May 12, 2011

It's not the screen, it's the rom, the browser is set/capped to 16 bits. The gallery however actually displays in 24 bits.

This issue can be fixed with a custom rom, it's probably set to 16 bits to allow smoother web browsing, which is totally stupid because the processor is totally capable of handling smooth browsing with 24 bits display.

amtrakcn · May 12, 2011

There is color cap in WP7, currently with some tweak my Focus does display 24bit color in Pictures hub but 16bit in any browser related app. You people may want to try more.

Heavy banding on gradients

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