Re: [Gimp-user] Scaling in Gimp 2.6 is much slower than in Gimp 2.4

2008-10-28 Thread Sven Neumann
Hi, On Mon, 2008-10-27 at 04:01 -0700, Claus Berghammer wrote: > http://bugzilla.gnome.org/show_bug.cgi?id=557950 I have done some more tests and I tend to agree that the multi-pass scaling doesn't improve the quality when upscaling. It's a very simple change to get upscaling perform more simila

Re: [Gimp-user] Scaling in Gimp 2.6 is much slower than in Gimp 2.4

2008-10-28 Thread Claus Berghammer
Hello... @Eric P: Upscaling image: 500px -> 5000px (bicubic): Gimp 2.6.1: 35,21 sec Gimp 2.4.7: 6,9 sec Downscaling layer: Image is 5000x5000 px, 2 white layers Scaling top layer to 2500x2500px (bicubic): Gimp 2.6.1: 7,85 sec Gimp 2.4.7: 4,78 sec @Sven Neumann: Thanks for your hint on the rel

Re: [Gimp-user] Scaling in Gimp 2.6 is much slower than in Gimp 2.4

2008-10-27 Thread Sven Neumann
Hi, On Mon, 2008-10-27 at 04:01 -0700, Claus Berghammer wrote: > Since there is no explanation WHY the algorithm was rewritten, I guess 2 > possible reasons: > > 1.)The old code did something wrong in some cases > 2.)The new code was necessary due to GEGL integration > > For the fir

Re: [Gimp-user] Scaling in Gimp 2.6 is much slower than in Gimp 2.4

2008-10-27 Thread Eric P
Claus Berghammer wrote: > Hello Gimp Users and Developers, > > This is a follow up of Bug 557950 (which in fact isn't a bug, according to > Sven Neumann ;-) > http://bugzilla.gnome.org/show_bug.cgi?id=557950 > > As described in the “Bug”, scaling in Gimp 2.6 series is far slower, than it > was in