[Digikam-users] Perspective Adjustment tool in digiKam 5 Issue

[Dmitri Popov]

Indeed, I use nVidia card with the nVidia driver. I switched to
Nouveau, and it helped. The action is still not fluid, but usable.
Thanks, Philip!

Best,
Dmitri

On Fri, Jul 22, 2016 at 7:19 PM, Philip Johnsson
<philip.johnsson at gmail.com> wrote:
> Dmitri,
>
> Are you using a nvidia video card as I do? I just tested to change to the
> open source nouveau driver instead and with this driver the preview drawing
> with perspective adjustment doesn't lag like it do with the nvidia propriety
> driver. Too bad the nouveau isn't as good in other regards that I want to
> use it but I guess that suggests that the problem is related to QT5, OpenGL
> and/or video drivers and not Digikam itself.
>
> /Philip
>
>
> On Fri, Jul 22, 2016 at 3:01 PM, Dmitri Popov <lazylegs at gmail.com> wrote:
>>
>> I see. Thanks for the explanation, Gilles!
>>
>> Best,
>> Dmitri
>>
>> On Fri, Jul 22, 2016 at 2:06 PM, Gilles Caulier
>> <caulier.gilles at gmail.com> wrote:
>> > 4.x => Qt4
>> > 5.x => Qt5
>> >
>> > This want mean Qt5 do not use same compilation rules than Qt4 about
>> > Widgets
>> > and X11 interaction.
>> >
>> > Gilles Caulier
>> >
>> > 2016-07-22 12:42 GMT+02:00 Dmitri Popov <lazylegs at gmail.com>:
>> >>
>> >> I'm just thinking out loud here: if this is a video driver problem,
>> >> why then does the tool work fine in digiKam 4.14 but not in digiKam
>> >> 5.0.0?
>> >>
>> >> Best,
>> >> Dmitri
>> >>
>> >> On Thu, Jul 21, 2016 at 10:10 PM, Gilles Caulier
>> >> <caulier.gilles at gmail.com> wrote:
>> >> > Phillips,
>> >> >
>> >> > Perspective do not use specific library. It certainly a video driver
>> >> > problem
>> >> > or something like that.
>> >> >
>> >> > Gilles Caulier
>> >> >
>> >> > 2016-07-21 20:47 GMT+02:00 Philip Johnsson
>> >> > <philip.johnsson at gmail.com>:
>> >> >>
>> >> >> I just tested the perspective tool here too and it's a bit sluggish
>> >> >> here
>> >> >> also. Not as you described but it's not fluent. Wonder what
>> >> >> libraries
>> >> >> the
>> >> >> tool is dependent on so the problem comes from might come from
>> >> >> openmp
>> >> >> or
>> >> >> some other library that helps the tool for its feature?
>> >> >>
>> >> >> /Philip
>> >> >>
>> >> >>
>> >> >> On Thu, Jul 21, 2016 at 4:29 PM, Dmitri Popov <lazylegs at gmail.com>
>> >> >> wrote:
>> >> >>>
>> >> >>> Thanks for your replies, guys! This is really strange. Any ideas
>> >> >>> what
>> >> >>> could case the issue?
>> >> >>>
>> >> >>> Thank you,
>> >> >>> Dmitri
>> >> >>>
>> >> >>> On Thu, Jul 21, 2016 at 2:23 PM, Gilles Caulier
>> >> >>> <caulier.gilles at gmail.com> wrote:
>> >> >>> > No problem here too : Mageia Cauldron 64 bits.
>> >> >>> >
>> >> >>> > Gilles Caulier
>> >> >>> >
>> >> >>> > 2016-07-21 13:20 GMT+02:00 Pedro Neves <nevesdiver at gmail.com>:
>> >> >>> >>
>> >> >>> >> On 21-07-2016 11:59, Dmitri Popov wrote:
>> >> >>> >>>
>> >> >>> >>> Does anyone else have the same
>> >> >>> >>> issue?
>> >> >>> >>>
>> >> >>> >> Dmitri:
>> >> >>> >>
>> >> >>> >> I've been using the perspective tool quite often for the last
>> >> >>> >> few
>> >> >>> >> days
>> >> >>> >> and
>> >> >>> >> it's been working fine.
>> >> >>> >> I'm on Arch Linux and using DK 5.0.0
>> >> >>> >>
>> >> >>> >> Cheers:
>> >> >>> >>
>> >> >>> >> Pedro
>> >> >>> >>
>> >> >>> >> _______________________________________________
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>> >> >>> >
>> >> >>> >
>> >> >>> >
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>> >> >>
>> >> >>
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>> >> >
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