RFC: QImage scaling

[Lubos Lunak]

On Tuesday 27 of March 2007, Zack Rusin wrote:
> On Tuesday 27 March 2007 09:40, Lubos Lunak wrote:
> >  Hello,
> >
> >  Problem description: Untar attachment, compile (g++ a.cpp asm_scale.S
> > scale.cpp ...) run and compare times.
>
> You haven't tried snapshots for a long time have you?

 Qt-copy got updated only yesterday *shrug*. And who'd expect this gets 
handled 2 years and 10 months after a mere KDE developer complains and 
provides a patch.

> T1: 21
> T2: 25
> Unless you're of course suggesting replacing the algorithm in Qt with an
> older and a little slower version of it which I must say is a bad idea =)
>
> As to the assembly code I have a task to rewrite it using intrinsics
> because then it would work across more platforms than gnu/linux+gcc. If
> you'd like to write that and provide a patch that'd be wicked awesome
> otherwise all i can say is "it's fixed in 4.3".

 Given the date of the last time when I tried to write something in assembly, 
I think I'll consider this fixed. That is, if Qt picks up some fixes from the 
older and little slower version :). Do I need to do more than just say 
they're rev467753 and rev636054? Thanks.

-- 
Lubos Lunak
KDE developer
--------------------------------------------------------------
SUSE LINUX, s.r.o.   e-mail: l.lunak at suse.cz , l.lunak at kde.org
Lihovarska 1060/12   tel: +420 284 028 972
190 00 Prague 9      fax: +420 284 028 951
Czech Republic       http//www.suse.cz