Re: [android-developers] Re: Hardware accleration slow down every Canvas app. Why?

I think Romain Guy was looking for specific examples from the stock
Android apps. You said that *all* apps slowed down, if some random
market app slows down, that's not really unexpected, if you can
substantiate your claim by pointing out an app running on many devices
because it comes preloaded, it might be a cause for concern. (This is
a case where your numbers don't match their numbers, and people trust
their numbers, so your numbers are probably wrong, or your hardware is
just broken.)

kris

On Sun, Jan 15, 2012 at 5:45 PM, sblantipodi
<perini.davide@dpsoftware.org> wrote:
> One examples:
> https://market.android.com/details?id=MortgageCalculatorPRO.DPsoftware.org&feature=search_result#?t=W251bGwsMSwyLDEsIk1vcnRnYWdlQ2FsY3VsYXRvclBSTy5EUHNvZnR3YXJlLm9yZyJd
>
> there a dozens of similar app that is slowed down by hardware
> acceleration.
>
> On 15 Gen, 23:31, Romain Guy <romain...@android.com> wrote:
>> Please tell me about specific examples so I can see why it is so.
>>
>> On Sun, Jan 15, 2012 at 2:25 PM, sblantipodi
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> <perini.dav...@dpsoftware.org> wrote:
>> > All apps that heavily use canvas to draw something like drawLine(),
>> > drawRect(),
>> > and other primitives.
>> > I'm not the only one who is experiencing the problem, there are many
>> > other developers
>> > that are experiencing the problem also on honeycomb with tablets. XDA
>> > is full of complaining
>> > about this hardware acceleration.
>>
>> > On 15 Gen, 23:01, Romain Guy <romain...@android.com> wrote:
>> >> All the standard apps use hardware acceleration and we've measured
>> >> large performance improvements. What apps exactly are slower using
>> >> hardware acceleration?
>>
>> >> On Sun, Jan 15, 2012 at 1:45 PM, sblantipodi
>>
>> >> <perini.dav...@dpsoftware.org> wrote:
>> >> > This is what I saied, every apps seems to be slower.
>> >> > Sincerely I am trying many apps and every apps seems slower when
>> >> > hardware acceleration is on.
>> >> > I really don't find any improvements in this "hardware acceleration"
>> >> > on android platform.
>> >> > On other OS it clearly boost performance, on android it slow down
>> >> > every kind of painting.
>>
>> >> > On 15 Gen, 22:39, Romain Guy <romain...@android.com> wrote:
>> >> >> > Every apps that uses canvas are slowed down when this acceleration is
>> >> >> > enabled.
>>
>> >> >> That is certainly not true since *every* app uses Canvas :) It depend
>> >> >> on what you do with Canvas and how your code works (for instance if
>> >> >> you keep creating new bitmaps/paths/paints it's going to be slow.)
>>
>> >> >> --
>> >> >> Romain Guy
>> >> >> Android framework engineer
>> >> >> romain...@android.com
>>
>> >> > --
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>> >> --
>> >> Romain Guy
>> >> Android framework engineer
>> >> romain...@android.com
>>
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>> --
>> Romain Guy
>> Android framework engineer
>> romain...@android.com
>
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