[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

Boudewijn Rempt  changed:

   What|Removed |Added

 Status|CONFIRMED   |RESOLVED
 Resolution|--- |DUPLICATE

--- Comment #16 from Boudewijn Rempt  ---


*** This bug has been marked as a duplicate of bug 385276 ***

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[krita] [Bug 373676] Bent lines showing up on OSX.

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #15 from jdre...@web.de ---
Created attachment 108072
  --> https://bugs.kde.org/attachment.cgi?id=108072=edit
intel vs. amd doodle performance test

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[krita] [Bug 373676] Bent lines showing up on OSX.

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #14 from jdre...@web.de ---
I just checked what happens, using gfxCardStatus to force using the integrated
intel gpu.
the Acceleration checkbox is not greyed out anymore. 
on start it was checked (openGl on), performance was very bad. 
unchecked it - performance is not good, but usable.

By the way I tried to save my test as a .png and Krita got stuck like in
previous versions. Creating a new document by keyboard shortcut (cmd-n) helps
and the menus get populated again. This means AMD is not responsible for this
bug, since krita used the integrated intel gpu.

(For 3.2.0 it feels like OpenGL is on by default and krita does not check or
apply this option on starting up. I think it is the same using the intel gpu,
but less obvious, because the integrated gpu is slower than the discreet AMD
gpu)

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Alvin Wong]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #13 from Alvin Wong  ---
(In reply to jdreske from comment #12)
> I found in Krita 3.2.0 turning off OpenGL helps with the jagged lines. 
> But this only helps when I explicitly turn off OpenGl. Restarting Krita with
> OpenGl unchecked results in jagged lines again. I have to turn on and off
> OpenGl Acceleration to be able to draw smooth curves.
> 
> In 3.3.0 rc 1 the OpenGl options are greyed out. It is no more possible to
> turn on and off OpenGl and thus drawn lines look as jagged as with 3.2.0.
> started with OpenGl unchecked...
> 
> ( screenshot above)

>From what I understand, in Krita 3.3 OpenGL is intentionally disabled for AMD
graphics due to bug 369014. I have been told that you should be able to force
OS X to use the Intel integrated graphics to run Krita, can you test that?

I have no clue why toggling OpenGL on and then off in 3.2 would cause a change
in the input behaviour.

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[krita] [Bug 373676] Bent lines showing up on OSX.

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #12 from jdre...@web.de ---
I found in Krita 3.2.0 turning off OpenGL helps with the jagged lines. 
But this only helps when I explicitly turn off OpenGl. Restarting Krita with
OpenGl unchecked results in jagged lines again. I have to turn on and off
OpenGl Acceleration to be able to draw smooth curves.

In 3.3.0 rc 1 the OpenGl options are greyed out. It is no more possible to turn
on and off OpenGl and thus drawn lines look as jagged as with 3.2.0. started
with OpenGl unchecked...

( screenshot above)

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Alvin Wong]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #11 from Alvin Wong  ---
(In reply to jdreske from comment #10)
> Created attachment 108056 [details]
> 3.2.0 opengl test

Any testing should be done with 3.3.0-rc.1 or a later version instead, it is
meaningless to test with 3.2.0 anymore.

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[krita] [Bug 373676] Bent lines showing up on OSX.

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #10 from jdre...@web.de ---
Created attachment 108056
  --> https://bugs.kde.org/attachment.cgi?id=108056=edit
3.2.0 opengl test

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Alvin Wong]

https://bugs.kde.org/show_bug.cgi?id=373676

Alvin Wong  changed:

   What|Removed |Added

 CC||alvinhoc...@gmail.com

--- Comment #9 from Alvin Wong  ---
This should be improved in 3.3.0-rc.1:
https://krita.org/en/item/krita-3-3-0-first-release-candidate/

Please check.

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #8 from Boudewijn Rempt  ---
Git commit d4bca56cde88f9be851d151aec8091a7a252ad46 by Boudewijn Rempt.
Committed on 20/09/2017 at 09:24.
Pushed by rempt into branch 'master'.

Improve stylus precision on OSX

Patch by Bernhard Liebl
Differential Revision: https://phabricator.kde.org/D7880

M  +8-0libs/ui/CMakeLists.txt
M  +9-1libs/ui/KisApplication.cpp
A  +22   -0libs/ui/osx.h [License: LGPL (v2+)]
A  +32   -0libs/ui/osx.mm

https://commits.kde.org/krita/d4bca56cde88f9be851d151aec8091a7a252ad46

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

--- Comment #7 from Boudewijn Rempt  ---
Git commit f386cdb7686c50ddc0a0842d2921aa3eff87b98e by Boudewijn Rempt.
Committed on 20/09/2017 at 09:19.
Pushed by rempt into branch 'krita/3.3'.

Improve stylus precision on OSX

Patch by Bernhard Liebl
Differential Revision: https://phabricator.kde.org/D7880

M  +8-0libs/ui/CMakeLists.txt
M  +9-1libs/ui/KisApplication.cpp
A  +22   -0libs/ui/osx.h [License: LGPL (v2+)]
A  +32   -0libs/ui/osx.mm

https://commits.kde.org/krita/f386cdb7686c50ddc0a0842d2921aa3eff87b98e

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Alvin Wong]

https://bugs.kde.org/show_bug.cgi?id=373676

Alvin Wong  changed:

   What|Removed |Added

 CC||thesilverdo...@gmail.com

--- Comment #6 from Alvin Wong  ---
*** Bug 384060 has been marked as a duplicate of this bug. ***

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

Boudewijn Rempt  changed:

   What|Removed |Added

 CC||jdre...@web.de

--- Comment #5 from Boudewijn Rempt  ---
*** Bug 384052 has been marked as a duplicate of this bug. ***

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

Boudewijn Rempt  changed:

   What|Removed |Added

 CC||tonantzin_h...@yahoo.com

--- Comment #4 from Boudewijn Rempt  ---
*** Bug 382555 has been marked as a duplicate of this bug. ***

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[krita] [Bug 373676] Bent lines showing up on OSX.

[R Sekouri]

https://bugs.kde.org/show_bug.cgi?id=373676

R Sekouri  changed:

   What|Removed |Added

 CC||r.seko...@gmail.com

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

Boudewijn Rempt  changed:

   What|Removed |Added

 CC||erich...@gmail.com

--- Comment #3 from Boudewijn Rempt  ---
*** Bug 377188 has been marked as a duplicate of this bug. ***

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

Boudewijn Rempt  changed:

   What|Removed |Added

   Platform|Other   |Mac OS X Disk Images

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[krita] [Bug 373676] Bent lines showing up on OSX.

[wolthera]

https://bugs.kde.org/show_bug.cgi?id=373676

wolthera  changed:

   What|Removed |Added

 CC||d.s.zampat...@gmail.com

--- Comment #2 from wolthera  ---
*** Bug 374989 has been marked as a duplicate of this bug. ***

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Leonardo Kaempf]

https://bugs.kde.org/show_bug.cgi?id=373676

Leonardo Kaempf  changed:

   What|Removed |Added

 CC||outcast-and-his-own@hotmail
   ||.de

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[krita] [Bug 373676] Bent lines showing up on OSX.

[Boudewijn Rempt]

https://bugs.kde.org/show_bug.cgi?id=373676

Boudewijn Rempt  changed:

   What|Removed |Added

 Status|UNCONFIRMED |CONFIRMED
 CC||b...@valdyas.org
 Ever confirmed|0   |1

--- Comment #1 from Boudewijn Rempt  ---
I can confirm the issue. It seems OSX specific. The
Qt::AA_CompressHighFrequencyEvents flag only is relevant on X11, it's false by
default on OSX and Windows according to http://doc.qt.io/qt-5/qt.html. However,
it's pretty clear that some form of event compression is going on. I suspect
we'll have to patch Qt again or fork Qt's OSX tablet support...

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