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--- Comment #126 from Christoph Cullmann ---
I have no solution for the clipping issue, but I reported that up-stream to Qt.
The update() without region solution might be possible, but seems costly.
I would like to backport my two commits turning
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--- Comment #125 from Christoph Cullmann ---
fillRect bug with anti-aliasing reported here
https://bugreports.qt.io/browse/QTBUG-78964
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--- Comment #124 from Christoph Cullmann ---
I created bugs for the clipping issues found here and in KTextEditor
https://bugreports.qt.io/browse/QTBUG-78962
https://bugreports.qt.io/browse/QTBUG-78963
If I am not wrong, see no way how Konsole could
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #123 from Christoph Cullmann ---
Unfortunately for the remaining artifacts the only local hack I have is to do
// update the parts of the display which have changed
update();
instead of
// update the parts of the display
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #122 from Christoph Cullmann ---
Git commit b025e4234c8e0d15cf33a392ba3f71c802fc1b2c by Christoph Cullmann.
Committed on 02/10/2019 at 22:43.
Pushed by scmsync into branch 'master'.
anti-alias line character painting, too, with the text
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #122 from Christoph Cullmann ---
Git commit b025e4234c8e0d15cf33a392ba3f71c802fc1b2c by Christoph Cullmann.
Committed on 02/10/2019 at 22:43.
Pushed by scmsync into branch 'master'.
anti-alias line character painting, too, with the text
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #121 from Christoph Cullmann ---
Git commit b025e4234c8e0d15cf33a392ba3f71c802fc1b2c by Christoph Cullmann.
Committed on 02/10/2019 at 22:43.
Pushed by cullmann into branch 'master'.
anti-alias line character painting, too, with the text
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #120 from Christoph Cullmann ---
Modifying what it is done here:
// if the characters on the line are different in the old and the new _image
// then this line must be repainted.
if (updateLine) {
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #119 from Christoph Cullmann ---
Perhaps that was the wrong update(), even if one tweaks that to be a bit more
lax, the ranges are not that right. A better candidate is the
update(dirtyRegion)
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--- Comment #118 from Christoph Cullmann ---
For me the other artifacts disappear if I alter:
void TerminalDisplay::processFilters()
to always do a full update instead of
update(preUpdateHotSpots | postUpdateHotSpots);
=> this means here we have
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--- Comment #117 from Christoph Cullmann ---
*** Bug 406770 has been marked as a duplicate of this bug. ***
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--- Comment #116 from Christoph Cullmann ---
Created attachment 122982
--> https://bugs.kde.org/attachment.cgi?id=122982=edit
post patch with QT_SCALE_FACTOR=1.5
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--- Comment #115 from Christoph Cullmann ---
Created attachment 122981
--> https://bugs.kde.org/attachment.cgi?id=122981=edit
pre patch with QT_SCALE_FACTOR=1.5
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--- Comment #114 from Christoph Cullmann ---
Git commit 2c10032170ac9c01b71bd4d405c2d7ba40786c68 by Christoph Cullmann.
Committed on 02/10/2019 at 20:54.
Pushed by scmsync into branch 'master'.
fix many of the rendering artifacts for hi-dpi setups
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #114 from Christoph Cullmann ---
Git commit 2c10032170ac9c01b71bd4d405c2d7ba40786c68 by Christoph Cullmann.
Committed on 02/10/2019 at 20:54.
Pushed by scmsync into branch 'master'.
fix many of the rendering artifacts for hi-dpi setups
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #113 from Christoph Cullmann ---
Git commit 2c10032170ac9c01b71bd4d405c2d7ba40786c68 by Christoph Cullmann.
Committed on 02/10/2019 at 20:54.
Pushed by cullmann into branch 'master'.
fix many of the rendering artifacts for hi-dpi setups
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #112 from Christoph Cullmann ---
This small change fixes 99% of the artifacts for me:
diff --git a/src/TerminalDisplay.cpp b/src/TerminalDisplay.cpp
index 5753ae74..fabf5907 100644
--- a/src/TerminalDisplay.cpp
+++
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #111 from Christoph Cullmann ---
See https://bugreports.qt.io/browse/QTBUG-66036 and
https://bugs.kde.org/show_bug.cgi?id=390451
For me most things already work if we do just remove
paint.setRenderHint(QPainter::Antialiasing,
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--- Comment #110 from rjurado
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|ug.cgi?id=406770
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--- Comment #109 from lukebe...@hotmail.com ---
Has this issue been reported upstream? It was believed that this was caused by
https://bugreports.qt.io/browse/QTBUG-66036
But that issue is closed and did not help here. Could a KDE dev open up a new
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--- Comment #108 from Rober ---
(In reply to genbushi from comment #107)
> Adjusting line spacing to 1px resolves lines for me.
> (Konsole Profile > Appearance > Misc)
>
> Display Scaling = 1.3
> Operating System: KDE neon 5.16
> KDE Plasma Version:
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--- Comment #107 from
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--- Comment #106 from Postix ---
(In reply to Robbert van der Helm from comment #105)
> While not ideal, I've managed to work around this by launching Konsole
> without DPI scaling and then reexporting the environment variable for
> applications
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--- Comment #105
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--- Comment #104 from Postix ---
Created attachment 120496
--> https://bugs.kde.org/attachment.cgi?id=120496=edit
Horizontal lines in Konsole; Fractional Scaling 1.5; Transparency=True
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--- Comment #103 from Postix ---
Created attachment 120495
--> https://bugs.kde.org/attachment.cgi?id=120495=edit
Horizontal lines in Vim; Fractional Scaling 1.5; Transparency=True
Theses lines appear while scrolling in Vim.
* Interestingly their
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--- Comment #102 from Wolfgang Bauer ---
(In reply to Wolfgang Bauer from comment #101)
> On your screenshot the *background* shows artifacts, I never said that this
> is fixed.
There's also bug#406770 btw, as already mentioned here.
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--- Comment #101 from Wolfgang Bauer ---
(In reply to Nicolas from comment #100)
> Created attachment 120493 [details]
> Konsole 19.04.1 ugly lines
>
> (In reply to Wolfgang Bauer from comment #99)
> > Which problem exactly?
> > I was talking
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--- Comment #100 from Nicolas ---
Created attachment 120493
--> https://bugs.kde.org/attachment.cgi?id=120493=edit
Konsole 19.04.1 ugly lines
(In reply to Wolfgang Bauer from comment #99)
> Which problem exactly?
> I was talking specifically about
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--- Comment #99 from Wolfgang Bauer ---
(In reply to Fabian Lesniak from comment #98)
> (In reply to Wolfgang Bauer from comment #96)
> > What you are seeing is bug#402415 that should be fixed in konsole 19.04.0,
> > but you are using 18.12.3 that
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--- Comment #98 from
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--- Comment #97 from Jeffrey Bouter ---
Created attachment 120461
--> https://bugs.kde.org/attachment.cgi?id=120461=edit
Konsole Select Text
There's no need to launch Midnight Commander, just selecting multiple lines
will suffice.
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--- Comment #96 from Wolfgang Bauer ---
(In reply to Lastique from comment #92)
> Note that on my screenshot vertical and horizontal dashes are garbled. I
> don't see that in Bug 406770.
What you are seeing is bug#402415 that should be fixed in konsole
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #95 from Postix ---
I think I may have tracked it down a little bit in the source code:
In TerminalDisplay.cpp of Konsole it says
> 674: painter.fillRect(rect, color);
> 678: painter.fillRect(rect, backgroundColor);
If you comment out
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #94 from Jeffrey Bouter ---
Created attachment 120457
--> https://bugs.kde.org/attachment.cgi?id=120457=edit
konsole_ls
In current and above screenshot, you can see I'm using a black background. I've
had to take a photograph, as pressing
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--- Comment #93 from Jeffrey Bouter ---
Created attachment 120456
--> https://bugs.kde.org/attachment.cgi?id=120456=edit
konsole_photo_prompt_return
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--- Comment #92 from Lastique ---
Could it be that the bug is masked with --notransparency by the black window
background?
(In reply to Nate Graham from comment #90)
> Looks like that issue is tracked by Bug 406770.
Note that on my screenshot
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--- Comment #91 from Jeffrey
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Nate Graham changed:
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Component|general |tabbar
See Also|
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Nate Graham changed:
What|Removed |Added
Status|REOPENED|CONFIRMED
--- Comment #89 from Nate Graham ---
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #88 from Christoph Feck ---
Please test Konsole 19.04, see bug 402415. I am unsure if anyone tested line
graphics using fractional scaling.
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--- Comment #87 from Lastique ---
This is on Kubuntu 19.04.
Konsole: 18.12.3
KDE Plasma: 5.15.4
KDE Frameworks: 5.56.0
Qt: 5.12.2
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--- Comment #86 from Christoph Feck ---
Which Konsole version is comment #85? I thought we fixed line graphics already.
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--- Comment #85 from Lastique ---
Created attachment 120365
--> https://bugs.kde.org/attachment.cgi?id=120365=edit
Konsole with Midnight Commander correct
For reference, this is how it should look.
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--- Comment #84 from Lastique ---
Created attachment 120364
--> https://bugs.kde.org/attachment.cgi?id=120364=edit
Konsole with Midnight Commander garbled
In my case, --notransparency helps with raw console output, but running e.g.
Midnight
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--- Comment #82 from Bo Simonsen ---
(In reply to Harry ten Berge from comment #81)
> Yes, confirmed that with '--notransparency' the artifacts are gone.
Assume it is a QT bug after all.
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--- Comment #81 from Harry ten Berge ---
Yes, confirmed that with '--notransparency' the artifacts are gone.
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--- Comment #80 from Sven Mauch ---
(In reply to Bo Simonsen from comment #79)
> Can anybody verify the lines go away if konsole is started with
> --notransparency?
Yes, I can no longer reproduce any unwanted horizontal lines if Konsole is
started
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--- Comment #79 from Bo Simonsen ---
Can anybody verify the lines go away if konsole is started with
--notransparency?
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--- Comment #78 from Bo Simonsen ---
In case somebody are working on a solution I thought I may add my observations
(has been trying my self to solve it but without luck so far).
1. The lines are actually holes in the painter image/canvas. You may see
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--- Comment #77 from Christoph
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--- Comment #76
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--- Comment #75 from Wolfgang
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--- Comment #74 from Bo Simonsen ---
With Applications/18.12 commit 807ac77061604c2ac7cf84b0a0b29dd949a6c634 makes
it even worse, for e.g. "mc". Not sure if it should be a seperate bug report?
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--- Comment #73 from Nate Graham ---
(In reply to 4k1r4.rulez from comment #72)
> The main reason to state it again is that it was closed as `Fixed in
> Qt5.12`, yet after update to 5.12 it is not. Hence the new "me too" posts .
And then it was
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--- Comment #72 from 4k1r4.ru...@gmail.com ---
(In reply to Christoph Feck from comment #70)
> There is no need to state it multiple times. If the issue gets fixed, the
> bug gets closed.
The main reason to state it again is that it was closed as
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--- Comment #71 from Clemens Eisserer ---
> There is no need to state it multiple times.
> If the issue gets fixed, the bug gets closed.
I guess the reason why there are so many "me too"s is that there is nothing
done about it and the bug was filed
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--- Comment #70 from Christoph Feck ---
There is no need to state it multiple times. If the issue gets fixed, the bug
gets closed.
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--- Comment #69 from HM ---
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--- Comment #64 from Vavooon ---
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--- Comment #63 from Nate Graham ---
That's correct, there is no *official* support. However KScreen allows you to
set a fractional scale factor on X11, and quite a few people do so for what I
consider to be legitimate reasons (e.g some 4k screens are
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #62 from Christoph Cullmann ---
Is fractional scaling at all supported by Qt?
At least the documentation still states:
http://doc.qt.io/qt-5/highdpi.html
Note: Non-integer scale factors may cause significant scaling/painting
artifacts.
https://bugs.kde.org/show_bug.cgi?id=373232
Nate Graham changed:
What|Removed |Added
Status|RESOLVED|REOPENED
Resolution|UPSTREAM
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #60 from Patrick Silva ---
I use display scale 1.2, Qt 5.12 beta2 on Arch Linux.
Horizontal lines persist on kate and konsole.
Is rebuild the packages against Qt 5.12 required to solve the bug?
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--- Comment #59 from Nate
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--- Comment #58 from Dominik Haumann ---
*** Bug 399072 has been marked as a duplicate of this bug. ***
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--- Comment #57 from Nate Graham ---
There's not much difference, really. This bug is on my list of bugs to monitor,
and once Qt 5.12 is released, undoubtedly folks who are affected will chime in.
So there's no danger of it getting missed, don't worry.
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #56 from Clemens Eisserer ---
> Once Qt 5.12 comes out, we can re-open this if the lines are still present.
> It's quite likely that this will be as well.
Could we let this report open, until we know for sure instead of closing it
without
https://bugs.kde.org/show_bug.cgi?id=373232
--- Comment #55 from Dr. Chapatin ---
(In reply to bugreporter11 from comment #53)
> Is there a similar bug
> report open for Kate? Kate has these horizontal lines too.
bug 390451
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