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Pages deforming when scrolling

OP ondris

13th January 2013, 12:14 PM   |  #1  
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Hi,

Have you ever noticed that when you scroll for exemple internet pages there is a little deformation of the image ? Like the text were warping, and especialy in portrait mod.

Take a look at this video: https://www.youtube.com/watch?v=-4-t...e_gdata_player

Do you know if it's hardware or software problem ?
Last edited by ondris; 13th January 2013 at 02:11 PM.
13th January 2013, 03:21 PM   |  #2  
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I was wondering the same thing. It's due to how LCDs refresh, top to bottom, line by line. Given the fact that our display is so dense with pixels, and the GPU isn't extremely powerful (it's a tablet after all), this is bound to happen.

It also happens on iPads, so don't think it's exclusive to the N10.

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13th January 2013, 03:24 PM   |  #3  
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I noticed this too back when I had my N10. It was very pronounced when scrolling in portrait mode. I thought it was another flaw until I had to go back to the HP Touchpad (running android) and noticed it too. But it was very hard to see on the Touchpad. Like stated before, its because it is pushing all those pixels.
13th January 2013, 04:20 PM   |  #4  
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It's not really disturbing but, i don't know if it could ever be fixed or we just have to deal with it...
15th January 2013, 08:44 PM   |  #5  
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I had a little freak out about this when I first got my N10. I had it on my galaxy tab 7+ and thought it was just an issue with that tablet, turns out its the refresh point of the screen and some people are really sensitive to it.

Anyone know if phone screens refresh top to bottom in portrait mode while tab screens refresh top to bottom in landscape mode?

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15th January 2013, 09:03 PM   |  #6  
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I always thought that would be part of the butter project?
15th January 2013, 10:15 PM   |  #7  
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Has to do with the combination of a very high resolution screen with a gpu that is not strong enough or optimized to power it. You didnt see this issue at all in the ipad 2 but did see it (albeit slightly) in the ipad 3 due to the huge increase in screen resolution from the ipad 2. The issue is also not in the ipad 4 at all, the increase in gpu performance stopped it from happening. The issue is pretty prevalent in our nexus 10s and I definitely notice it but its not as jarring after awhile.
19th February 2013, 09:21 PM   |  #8  
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Angry
are google going to "optimise" this then? it is rather annoying
19th February 2013, 09:46 PM   |  #9  
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That's pretty weird. I've been using my Nexus 10 since early December, and never saw or experienced anything like this. The youtube video also looks pretty strange to me -- I don't have any of the lag in scrolling that is apparent in that video. In the video it appears that something is really eating up cycles in either the CPU, GPU or both. My own N10 appears to be much faster -- no lag or delay like the video shows, and none of the deforming or skewing that shows on the video either.

What are you guys looking at that "deforms" when you scroll? Do you developer options enabled that might affect video performance, e.g., Transition animation scale modified, Animator duration scale, Disable HW overlays? Having trouble reconciling my own experience with the youtube video and what I'm reading in this thread. I can't duplicate any of it on my end, regardless of the website or document I'm browsing or scrolling over...
19th February 2013, 11:01 PM   |  #10  
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Quote:
Originally Posted by Nitemare3219

I was wondering the same thing. It's due to how LCDs refresh, top to bottom, line by line. Given the fact that our display is so dense with pixels, and the GPU isn't extremely powerful (it's a tablet after all), this is bound to happen.

It also happens on iPads, so don't think it's exclusive to the N10.

Sent from my Nexus 4 using xda app-developers app

Its not so much because of the GPU. Its the screen limited by the 60hz refresh rate. This can be seen on a desktop if the monitor is in portrait mode and you can find a page that with scroll @ 60fps.

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