[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Alvin Wong]

https://bugs.kde.org/show_bug.cgi?id=359171

Alvin Wong  changed:

   What|Removed |Added

 Status|CONFIRMED   |RESOLVED
 Resolution|--- |WORKSFORME

--- Comment #31 from Alvin Wong  ---
Thanks. This would really appear to be an issue with the driver. I'm afraid
there aren't anything to be done in Krita.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Chris Jones]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #30 from Chris Jones  ---
Hi Alvin,

In 3.3.3 there's no difference in the stroke start glitch when changing from
WinTab to Pointer Input.

When using the Dynamic Brush it's about on par with native Windows Ink apps
that are built into Windows 10 though, which I assume means those apps are also
dampening the effect with some kind of smoothing algorithm, and it's probably
not going to get much better in Krita on Win 10 anyway.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Alvin Wong]

https://bugs.kde.org/show_bug.cgi?id=359171

Alvin Wong  changed:

   What|Removed |Added

 CC||alvinhoc...@gmail.com

--- Comment #29 from Alvin Wong  ---
Hi Chris, may I ask if this is fixed by enabling Pointer Input (Windows Ink) in
the more recent versions of Krita?

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Chris Jones]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #28 from Chris Jones  ---
Hmm, not sure... as far as I know Windows Update takes care of driver updates
on the Surface, and it's up to date in that respect.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Dmitry Kazakov]

https://bugs.kde.org/show_bug.cgi?id=359171

Dmitry Kazakov  changed:

   What|Removed |Added

 Resolution|FIXED   |---
 Status|NEEDSINFO   |CONFIRMED

--- Comment #27 from Dmitry Kazakov  ---
It might be somehow related to the driver or the driver version... Probably, we
should use Windows Ink for that...

Is it possible to update a driver for your tablet-screen?

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Chris Jones]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #26 from Chris Jones  ---
Hi Dmitri,

On the desktop the straight line "hook" at the start of a stroke is about the
same as in my video attachment in Comment 22.  However, I find that Sketchpad
(built into Windows 10) as well as OneNote also display the same issue to about
the same degree.

Krita on the SP4 is also producing similar results as in the SP4 video, but
without the double stroke start.  Sketchpad and OneNote on the SP4 however do
not show signs of the hook issue, so I'm not sure what to make of that.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Dmitry Kazakov]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #25 from Dmitry Kazakov  ---
Just wanted to add that I also tried to reproduce the Speed sensor problem and
I couldn't reproduce it either.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Dmitry Kazakov]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #24 from Dmitry Kazakov  ---
*** Bug 360588 has been marked as a duplicate of this bug. ***

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Dmitry Kazakov]

https://bugs.kde.org/show_bug.cgi?id=359171

Dmitry Kazakov  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|REOPENED|NEEDSINFO

--- Comment #23 from Dmitry Kazakov  ---
Hi, Chris!

I have just tested my tablet devices on Linux and Windows with OpenGL on and
off and I still couldn't reproduce the problem. I have a feeling that the
problem was related to a bug in Qt 5.6, where the tablet events got compressed
accidentally. The bug was in a wild until we started to patch Qt, shipped with
Krita. Now the bug should be gone.

Could you please check if the bug is still actual for your hardware on Krita
3.1.3rc1?

https://download.kde.org/unstable/krita/3.1.3-rc.1/krita-3.1.3-rc.2-x64.zip

If you still can reproduce the bug, please reopen the bug.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Chris Jones via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #22 from Chris Jones  ---
Created attachment 99307
  --> https://bugs.kde.org/attachment.cgi?id=99307=edit
Stroke start glitches in krita-3.0-da5496d-x64

Hi Dmitry,

Here are videos and logs of both my desktop PC and Surface Pro 4.

An interesting new finding is that the Surface often produces a double-start to
the stroke when OpenGL is enabled, along with a slight hook.  Without OpenGL it
just produces the hook.  I've only noticed this now because normally I'm having
to use the SP4 without OpenGL due to a stuttering issue
(https://bugs.kde.org/show_bug.cgi?id=360588), and it's possible this is
exacerbating the problem and causing the double-strokes.

My desktop also displays similar stuttering when using High Quality filtering
(https://bugs.kde.org/show_bug.cgi?id=331794), but doesn't produce
double-strokes with other scaling modes or with OpenGL off though.

Incidentally I've used CamStudio to record the videos and it's possible you'll
need the CamStudioCodec to view them...  let me know if you have playback
problems and I'll try something else.

Hope that helps!

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Dmitry Kazakov via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359171

Dmitry Kazakov  changed:

   What|Removed |Added

 CC||dimul...@gmail.com

--- Comment #21 from Dmitry Kazakov  ---
Hi, Chris!

Could you please try the latest version from this link 

http://files.kde.org/krita/3/windows/devbuilds/krita-3.0-da5496d-x64.zip

and, if the problem is still actual:

1) Activate Basic Smoothing
2) Activate tablet events logging
3) Start video recording your screen with some software

Then try to reproduce the problem a couple of times

I need the following data:
1) Video of the bug
2) Tablet log for this video

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Chris Jones via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #20 from Chris Jones  ---
There's still a short straight line at the start of strokes in normal and
full-screen mode in krita-3.0-Beta-master-962bfe1-x64

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359171

gaonir...@yahoo.com.ar changed:

   What|Removed |Added

 CC||gaonir...@yahoo.com.ar

--- Comment #19 from gaonir...@yahoo.com.ar ---
Try drawing in full-screen mode to see if the problem still occurs.

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[krita] [Bug 359171] [WACOM] paint strokes with tablet less fluent than in 2.9.6

[Boudewijn Rempt via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359171

--- Comment #18 from Boudewijn Rempt  ---
And that seems to be because we need to patch Qt, I'm making a new build with a
patched Qt 5.6

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