[Qt-interest] Qt 4.8.0 Release Candidate available

[Till Oliver Knoll]

2011/10/17, James Larcombe <james.larcombe at avid.com>:
> Till Oliver Knoll wrote:
>
>> Hope the raster engine gets some final polishing in Qt 4.8 on Mac!
>
> I was under the impression that the raster engine wasn't going to be
> fully supported on the Mac in Qt 4.8, in the end. They were trying to
> make it the default engine, but had a few nasty problems that couldn't
> be fixed in time.

I wouldn't mind - if it wasn't for this one nasty "show-stopper bug"
(for my application)

  https://bugreports.qt.nokia.com/browse/QTBUG-15663

When you transform images with alpha channel there is an ugly
"graphical artifact" being rendered with the "native painter".

In my case I could work around this by using an OpenGL painter for the
graphics view widget, but that one doesn't get the anti-aliasing as
nice as either the "native" or "raster" engine :/ Which is a bummer
since my application is a graphical one...

But yes, seems like the default painter on Mac is still the "native"
one, and that one works just fine with the "Lion full screen feature".


On another note: does "native painter" imply "No alien widgets" (I
guess so)? See here:
http://labs.qt.nokia.com/2011/02/23/alien-widgets-on-mac/

Or are "alien widgets" independent on the underlying paint engine?

And according to some other post here "alien widgets" can improve
performance dramatically (if you have many many widgets - which I
don't, but still...).

Anyone knows?

Cheers, Oliver