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Finger lag (delayed response)

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By blackhand1001, Senior Member on 10th December 2012, 08:00 PM
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11th February 2013, 09:27 AM |#41  
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Re: Finger lag (delayed response)
Quote:
Originally Posted by Tomatoes8

Any link to these articles? Sounds like a good read. I am still not convinced that this is anything other than Apple marketing but I'll judge myself after reading the articles. Google doesn't turn up anything.

Sorry I don't know any articles that discuss it. Most of my info comes from first hand experience helping write a touchscreen driver for the HP TouchPad on Android and such. You can look at the Android 4.1 release notes and also search for NVIDIA direct touch.

A rather simple way to see the input lag is to turn on "show touches" in the developer settings and swipe around. If there was no touch latency then you should never see the white dot. On most of my devices I'd guess the latency is between 150-300ms with the HP TouchPad being the worst.

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11th February 2013, 06:47 PM |#42  
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Quote:
Originally Posted by dalingrin

Sorry I don't know any articles that discuss it. Most of my info comes from first hand experience helping write a touchscreen driver for the HP TouchPad on Android and such. You can look at the Android 4.1 release notes and also search for NVIDIA direct touch.

A rather simple way to see the input lag is to turn on "show touches" in the developer settings and swipe around. If there was no touch latency then you should never see the white dot. On most of my devices I'd guess the latency is between 150-300ms with the HP TouchPad being the worst.

Sent from my Nexus 10 using Tapatalk HD

What I get from the Nvidia direct touch marketing is that it improves touch in general compared to most tablets which could include the iPad for all we know. Where does it say it improves touch on everything but IOS is still more responsive? I don't know, sounds like weak marketing spiel to me and people just like to incorrectly fill in the gaps that are not explained.

I haven't used any tegra 3 devices that had nicer touch.
13th February 2013, 06:25 AM |#43  
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There is no existing Android device which does not have input lag. They all take 100ms or more to detect that your finger has touched the screen. This makes it useless for typing fast and playing games like Canabalt. When dialing a number in the Phone app on my SGS2, the numbers lag behind by almost 2 digits.

I have used the HTC One X which has a Tegra 3 and the input is WAY faster than my SGS2. However it's still not even close to the iPhone.
13th February 2013, 08:33 AM |#44  
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Quote:
Originally Posted by Tomatoes8

What I get from the Nvidia direct touch marketing is that it improves touch in general compared to most tablets which could include the iPad for all we know. Where does it say it improves touch on everything but IOS is still more responsive?

lol, you expect nVIDIA marketing to say, "Our product improves touch response but isn't as good as Apple's"? At this point I'm starting to wonder if you are just fishing for anything to argue about. Besides, I never said Direct Touch would be worse than Apple's implementation. Direct Touch would take steps to be at least near parity with iOS devices.

Quote:

I don't know, sounds like weak marketing spiel to me and people just like to incorrectly fill in the gaps that are not explained.
I haven't used any tegra 3 devices that had nicer touch.

As I already said, AFAIK no current Tegra 3 devices use direct touch. I at least know that none of the Tegra 3 devices I've owned(Transformer line) use direct touch.

I've defined where in the Android/Linux architecture latency can exist and how Apple's micro-kernel and real time userspace process eliminates these sources of latency compared to Android. I've shown multiple companies devote resources to try fix the touch response on Android/Linux devices and you're still not convinced there is any latency to begin with...You should win the award for Most Stubborn XDA User.
13th February 2013, 12:10 PM |#45  
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Re: Finger lag (delayed response)
I wouldn't argue with dalingrin...

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13th February 2013, 09:49 PM |#46  
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Re: Finger lag (delayed response)
When I turn on show touches in dev options, the white dot follows my finger about 3/4" behind where my finger is actually pointing. Is this about normal for everyone else? My S3 is a hell of a lot more responsive than my N10.
Last edited by jefflikesbagels; 13th February 2013 at 09:51 PM.
13th February 2013, 10:41 PM |#47  
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My phone with cm7 has way less input lag than my nexus 10. In dev tools, my finger is never more than .5 of a centimeter away from my finger. Yet the nexus is about an inch away. I would think it would be backwards since my phone runs at around 20 fps during this and the 10 looks to be around 60. They seem to react the same when putting my finger down and taking it off, but when i slide it around it lags behind.
The only explanation I can come up with is that Google added input smoothing to jelly bean because I do not see this in gingerbread or ics.
22nd August 2013, 04:29 AM |#48  
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I don't see any Magnification setting
Quote:
Originally Posted by Scared27

I turned off magnification and my lag is gone! Good call.

Where is the magnification setting on the Nexus 10 developer options? I see "magnification gestures" in Accessibility. But I don't see any magnification in Developer Options. I'm using stock 4.2.3.
22nd August 2013, 04:56 AM |#49  
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Quote:
Originally Posted by os2baba

Where is the magnification setting on the Nexus 10 developer options? I see "magnification gestures" in Accessibility. But I don't see any magnification in Developer Options. I'm using stock 4.2.3.

I believe it's in accessibility options.
23rd August 2013, 02:05 AM |#50  
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My optimus g has no finger lag, similar to my friend's iPhone 5 whereas my nexus 4 seems to have quite a bit of delay, the lgog and n4 are both very similar. Aosp needs to optimise!

Sent from my LG Optimus G
23rd August 2013, 05:21 AM |#51  
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I just used someone's brand new Optimus Pro G (or whatever moronic random name they've given it so that customers still have ZERO mindshare of it unlike a simple logical name like Galaxy S 4 or iPhone 5).

This is the most powerful phone in the world and it stutters and lags like my Galaxy S II. The only part of the phone which is smooth is the bubble effect on the lockscreen. The scrolling in the home screen is also smooth most of the time but it stutters frequently. The rest of the phone is just LAG STUTTER LAG STUTTER LAG STUTTER STUTTER! This piece of garbage costs 45000 bucks in India.

I also used a Lumia 520 side by side. This phone is butter smooth even though it looks like it's capped at 30 fps. However it doesn't stutter AT ALL. Even in the browser pinch to zoom and scrolling is uber smooth. It costs 8000 bucks.

45000 buck Android phone with the most powerful hardware in the world, utterly curbstomped by an 8000 buck entry level WP8 device. Can you even imagine what a piece of garbage an 8000 buck Android phone would be like?
Last edited by LocutusEstBorg; 23rd August 2013 at 07:08 AM.

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