Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?

2013-11-08 Thread David V-Play 
Is there any change to get QSG_RENDER_TIMING=1 working on mobiles, because
it works only on Desktop when set in the Projects System Environment
settings.
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Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?

2013-11-08 Thread David V-Play 
Well, I tried it with Android (Nexus 7 and Huawai) and iOS 7 (iPad/Phone)
with Qt 5.2 and the option only works on desktops.

But it also does not work on desktops when I set the env manually with


qputenv(QSG_RENDER_TIMING,1);


Cheers,


David



On Fri, Nov 8, 2013 at 4:20 PM, Koehne Kai kai.koe...@digia.com wrote:

  -Original Message-
  From: interest-bounces+kai.koehne=digia@qt-project.org
  [mailto:interest-bounces+kai.koehne=digia@qt-project.org] On Behalf
 Of
  David V-Play
  Sent: Friday, November 08, 2013 4:11 PM
  To: interest@qt-project.org
  Subject: Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1?
 
  Is there any change to get QSG_RENDER_TIMING=1 working on mobiles,
  because it works only on Desktop when set in the Projects System
  Environment settings.

 Which mobile OS are you using? As long as it supports environment
 variables and stderr setting QSG_RENDER_TIMING should work, too.

 Regards

 Kai

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[Interest] Performance of Qt 5.2 much slower than Qt 5.1?

2013-11-06 Thread David V-Play 
I have tested Qt 5.1 and 5.2 beta 1 on my Nexus 7 with the flying icons
benchmark (
https://github.com/qtproject/playground-scenegraph/tree/master/benchmarks/flyingicons
)
and the performance of Qt 5.2 is worse than 5.1 although it should be
better or at least similar according to
blog.qt.digia.com/blog/2013/09/02/new-scene-graph-renderer/.

Does anyone know what could be the problem? Can anyone reproduce this
performance problem?

I have also created own tests where the same results occur –
http://qt-project.org/forums/viewthread/34495/

Cheers,

David
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