ahmm... i've got a couple of those and i'll have to check, but i'm pretty
sure the one i used to test on is actually the 9100G (the international
version), which has the SGX540 :)

Regarding the issue, the list i noticed the slowdown on just has a couple
of TextViews and and a couple of ImageViews nothing fancy. I do have a
customized fast scroll i wrote, but even when i disabled it i noticed the
same issue.
I couldn't find an explanation why that specific ListView was slowing down
with HA, so i just set it to be a software layer and thats it.

On Thu, Jul 19, 2012 at 8:37 PM, Romain Guy <[email protected]> wrote:

> The Samsung Galaxy S2 has a Mali 400 form ARM, Galaxy Nexus has an SGX540
> from IMG. These are two very different GPUs. Again, without knowing what
> the apps does I cannot say more about what's going on (also, all the apps
> we ship with the default build use hardware acceleration and perform better
> with it.)
>
>
> On Thu, Jul 19, 2012 at 10:33 AM, Piren <[email protected]> wrote:
>
>> Hi Guy, thanks for the reply
>>
>> Though it does make sense, i'm not seeing it happening.
>> I'm not using any special effects on that ListView and i've also tested
>> on a Samsung Galaxy S2 (i9100G), which has the same GPU and CPU (though a
>> slightly older chipset) and unlike the Nexus, it gets a major performance
>> improvement
>>
>>
>>
>>
>> On Thursday, July 19, 2012 8:02:49 PM UTC+3, Romain Guy (Google) wrote:
>>>
>>> So this isn't really an issue of "you're doing things that hurt
>>>> performance when HA is used", since the exact same code works much better
>>>> on other devices (HTC, Samsung and Motorola devices) except the Galaxy
>>>> Nexus.
>>>>
>>>
>>> Actually it is possible. Specific commands can run well on some GPUs and
>>> terribly on other GPUs. For instance, if you use the "edge fade" effect in
>>> your views, you can expect a significant performance hit on SGX GPUs like
>>> the one found in Galaxy Nexus.
>>>
>>> Once again, I cannot really help without knowing more about what exactly
>>> the app is doing. My personal phone is a Galaxy Nexus and every app I have
>>> currently installed runs faster with hardware acceleration than without.
>>>
>>> --
>>> Romain Guy
>>> Android framework engineer
>>> [email protected]
>>>
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>
>
>
> --
> Romain Guy
> Android framework engineer
> [email protected]
>
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