[Qt5-feedback] 400000 chips example in QML?

[Kishore]

On Thursday 12 May 2011 2:38:42 PM Samuel Rødal wrote:
> On 05/12/2011 10:55 AM, ext Kishore Jonnalagadda wrote:
> > As was asked in the blog
> > http://labs.qt.nokia.com/2011/05/11/responses-to-qt-5/.
> > 
> > I would like to know if QML can scale well enough. It seemed that
> > QGraphicsView used QGraphicsItems as they were much lighter than using
> > QWidget. But with QML each item will again be a QObject. Does this not
> > add too much overhead? Take the example of the 400000 chips for
> > reference.
> > 
> > --
> > Cheers,
> > Kishore
> 
> QML isn't really meant for such use-cases (visualization of large data
> sets). The right way of doing this would be to use scene graph or OpenGL
> directly (and you'd get much better performance than in the 40000 chips
> demo).

So this demo in Qt5 would use C++ code for the UI and not QML? So then there 
really are a lot of use cases where QML is not entirely suitable. Right?

Now, would the coding in c++ with scene graph (Sorry, i don't know much about 
the technology) would be the Qt5 way? Does it replace QGV?

Of course, OpenGL is an alternative just as it is today. But would Qt provide 
a way of doing it like it now does with QGV or is direct OpenGL the 
"recommended" way?
-- 
Cheers!
Kishore

Ps: I currently understand QGV but nothing much about OpenGL.