Higher resolution support in Froyo

[KP]

Hi,

As per the documentation, maximum resolution supported on the Froyo is
854x480 (WVGA854). Does it mean that we can't have a device running
Froyo with higher resolution ?

Are there any changes required to support higher resolution (for ex.
1024x600) ?

Thanks in advance.

[hedwin]

It is possible to run on higher resolutions, I have it running on a 1280x720 resolution, in the past had it run on 1920x0180.
But it depends on the hardware you are using.


 

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[Dianne Hackborn]

Which documentation are you talking about?  854x480 is certainly not a maximum resolution.

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[KP]

@hedwin Are you not seeing any difference in the performance ? Btw
which hardware features to check for the display ?

@dianne
In "Supporting multiple screen" section on the developer site, the
maximum resolution for large screen is 854x480. Also look at this
link, http://itgossips.com/android-os-honeycomb-being-developed-especially-for-tablets.php

Btw I bought a new gTablet which has 1024x600 resolution, whose
performance is not as good as the Samsumg Galaxy Tab. In terms of
hardware, gTablet has a better CPU than the Galaxy Tab. The resolution
of the Galaxy Tab is 854x480.

Another slightly different question is : What are the things on which
Android Performance depends ?

Thanks.

On Apr 16, 3:29 am, Dianne Hackborn <hack...@android.com> wrote:
> Which documentation are you talking about?  854x480 is certainly not a
> maximum resolution.
>
>
>
> On Fri, Apr 15, 2011 at 10:59 AM, KP <karanpop...@gmail.com> wrote:
> > Hi,
>
> > As per the documentation, maximum resolution supported on the Froyo is
> > 854x480 (WVGA854). Does it mean that we can't have a device running
> > Froyo with higher resolution ?
>
> > Are there any changes required to support higher resolution (for ex.
> > 1024x600) ?
>
> > Thanks in advance.
>
> > --
> > unsubscribe: android-porti...@googlegroups.com
> > website:http://groups.google.com/group/android-porting
>
> --
> Dianne Hackborn
> Android framework engineer

> hack...@android.com

[hedwin]

On Sat, Apr 16, 2011 at 6:33 AM, KP <karan...@gmail.com> wrote:

@hedwin Are you not seeing any difference in the performance ? Btw
which hardware features to check for the display ?

I use 1280x720 on a omap3530 based board which has a high performance display controller plus OpenGL acceleration. No performance issues here.
Used 1366x768 and 1920x1080 on a MIPS/TriMedia based TV system. The 1366x768 looked ok. 1920x1080 had some performance issues but this
was due to not having any hardware acceleration and limited memory.

What you need depends on what you want to accomplish. OpenGL hardware acceleration is helpfull. HD video definitly needs additional hw support 

[Dianne Hackborn]

On Fri, Apr 15, 2011 at 9:33 PM, KP <karan...@gmail.com> wrote:

@dianne
In "Supporting multiple screen" section on the developer site, the
maximum resolution for large screen is 854x480.

No it isn't, the sizes mentioned there are just examples of screens that fall in to specific buckets.

 

Also look at this
link, http://itgossips.com/android-os-honeycomb-being-developed-especially-for-tablets.php

I would suggest that a site called "IT Gossips" is probably not a good authoritative source of information. ;)

 

Btw I bought a new gTablet which has 1024x600 resolution, whose
performance is not as good as the Samsumg Galaxy Tab. In terms of
hardware, gTablet has a better CPU than the Galaxy Tab. The resolution
of the Galaxy Tab is 854x480.

No, the resolution of the Galaxy Tab is 1024x600.

 

Another slightly different question is : What are the things on which
Android Performance depends ?

CPU speed, GFX hardware acceleration speed, number of pixels on the screen, memory bus speed, etc.

As for screen resolutions, the first thing you need to do is figure out what density bucket your screen will fall in to.  The size bucket will then fall out from that and the physical screen resolution.  This tells you how your device is classified as per the screen size definitions.

Android 2.2. introduced xhdpi density to the platform; Android 2.3 introduced xlarge screens.  An xhdpi xlarge screen is this a compatible screen as of 2.3, and that is a heck of a lot of pixels.  To be honest, way more pixels than you are going to be able to drive with current ARM hardware on HC where all drawing can be hardware accelerated; way way way more than can be handled on pre-HC devices where Canvas rendering can only be done in software.

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Dianne Hackborn
Android framework engineer

hac...@android.com