[Development] Status of QtDeclarative on Windows?

[Todd.Rose at nokia.com]

Well it looks like the slowness I'm seeing is due to the rendering thread using all of the CPU.  I tried toggling the nvidia driver settings for vsync and triple-buffering but that doesn’t change the behavior.  Is there anything else I can try?  Do other people see acceptable performance on Windows currently?

-Todd

> -----Original Message-----
> From: development-bounces+todd.rose=nokia.com at qt-project.org
> [mailto:development-bounces+todd.rose=nokia.com at qt-project.org] On
> Behalf Of ext Todd.Rose at nokia.com
> Sent: Saturday, January 14, 2012 4:47 PM
> To: Storm-Olsen Marius (Nokia-MP/Austin); development at qt-project.org
> Subject: Re: [Development] Status of QtDeclarative on Windows?
> 
> It seems equally slow when running debug and release libs, but will double
> check later this weekend to make sure it's not user-error.  I think it has more
> to do with running with a video card that doesn't provide much (if any?)
> hardware acceleration.  But I was assuming that even in that case that QML2
> would be just as good as QML1.  Clearly something is causing that to not be
> the case.
> 
> What's the expectation when using video cards that don't offer OpenGL
> hardware acceleration?
> 
> -Todd
> 
> > -----Original Message-----
> > From: Storm-Olsen Marius (Nokia-MP/Austin)
> > Sent: Saturday, January 14, 2012 9:12 AM
> > To: development at qt-project.org; Rose Todd (Nokia-M/Alpharetta)
> > Subject: Re: [Development] Status of QtDeclarative on Windows?
> >
> > Are you sure you are at least running the release version of your
> application?
> >
> > Debug version uses the debug CRT libs (and a debug Qt which does the
> > same), so everything will be a lot slower than the end product.
> >
> > You cannot really evaluate performance with debug builds.
> >
> > --
> > Sent from my Nokia N9
> > On 1/13/12 23:12 ext Todd.Rose at nokia.com wrote:
> > Just for fun I’ve been playing with a medium-sized QML app that we had
> > written for 4.7/Symbian and porting it to Qt5/QML2.  Mostly have been
> > working on Linux but the past few days I finally got around to
> > compiling Qt5 on Windows and playing around with the project enough so
> > that it would compile and run under qmlscene (it’s mostly qml/js with
> > a C++ plugin module as well).
> >
> > Anyway, the performance on my Windows box is horrible.  ListView
> > scrolling, image loading, animations, everything is like it’s running
> > in quicksand.  Is this expected?  If not, what do I need to do to in
> > order to troubleshoot?  This machine is relatively old and has a
> > crappy video card (older Nvidia Quadro), but it should be more than
> > good enough to run this app smoothly.  Any tips or tricks to enable extra
> debug tracing?
> >
> > Thanks,
> > Todd
> _______________________________________________
> Development mailing list
> Development at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/development