[Development] Status of QtDeclarative on Windows?
Todd.Rose at nokia.com
Todd.Rose at nokia.com
Mon Jan 16 01:45:13 CET 2012
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?
> -----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?
> > -----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
> > 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
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