Bug 372240 - the cursor has a black bar directly under
Summary: the cursor has a black bar directly under
Status: RESOLVED UPSTREAM
Alias: None
Product: krita
Classification: Applications
Component: Brush engines (show other bugs)
Version: 3.0.1.1
Platform: Other Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-11-09 05:59 UTC by marc.alicea
Modified: 2018-04-11 09:57 UTC (History)
1 user (show)

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Description marc.alicea 2016-11-09 05:59:55 UTC
as soon as i open up Krita for the first time there is a black bar directly under the cursor and is a but larger then the cursor itself. this is quite distracting when painting. As i attempted to screen shot this bug it disappears. Either its a canvas issue or its a cursor issue.
Comment 1 Halla Rempt 2016-11-11 15:42:12 UTC
Hi Marc,

It's probably an issue with your graphics card/drivers. Or something specific to a particular brush preset where the outline calculation is broken. Does it happel with all brush presets? Does it happen if you disable the brush outline cursor in the settings? Does it still happen if you disable opengl altogether? If in both cases, the black bar disappears, then it's an opengl/driver issue.
Comment 2 Halla Rempt 2018-04-11 09:55:34 UTC
So, this turns out to be a driver problem...

11:13:30 < Gremriel> Good morning
11:14:34 < Gremriel> I just updated to 4.01, and now I have this black shape just below my cursor. Any ideas on 
                     how to get rid of it? It wasn't there in 4.0 or other versions,
11:15:11 <@boud> I've heard of that before, but I don't exactly remember what was up with that.
11:15:18 <@boud> it's not something Krita draws, though...
11:15:32 <@boud> let me check bugzilla
11:16:02 <@boud> ttps://bugs.kde.org/show_bug.cgi?id=372240
11:16:15 <@boud> The reporter never got back to me with my questions...
11:16:27 <@boud> no wonder that I didn't remember the resolution
11:18:36 <@boud> so... 
11:18:42 <@boud> questions for you:
11:18:50 < Gremriel> yes?
11:19:14 <@boud> Does the black bar disappear if you disable canvas acceleration in settings/configure krita/display?
11:19:23 < Gremriel> let me check
11:20:44 < Gremriel> makes no difference, I'm afraid
11:22:16 <@boud> okay
11:22:26 <@boud> then let's check what happens if you disable the cursor outline
11:22:52 <@boud> settings;/configure krita/general/cursor/Outline Shape
11:24:08 < Gremriel> makes no difference :(
11:24:49 <@boud> then I'm beginning to think that it might be a windows thing... Did you also recently get a windows update?
11:26:15 < Gremriel> one sec
11:26:21 < Gremriel> just noticed something
11:26:34 < Gremriel> ok
11:27:05 < Gremriel> I have Krita open on  my Cintiq 27, and the black bar appears
11:27:08 < Gremriel> but
11:27:33 < Gremriel> when I drag Krita to the other monitor, the black bar disappears
11:27:58 <@boud> Could it be some wacom driver feature?
11:28:02 < Gremriel> (when I switch monitors, so the cursor is on the primary monitor)
11:28:18 <@boud> I would also try to go to Settings/Pen & Windows Ink and try to disable visual effects and show 
                 cursor.
11:28:27 < Gremriel> it's back when I drag Krita to the Cintiq again
11:31:11 <@boud> I'm linux now, so I cannot check the wacom options, but I'm suspecting it might something in there
11:31:24 < Gremriel> The black bar only appears in the canvas area, not when the cursor is over dockers or menu's
11:32:00 <@boud> Gremriel: and over the scratch pad in the brush editor?
11:33:06 < Gremriel> @Boud in the scratchpad it's gone, it shows an arrow with a squigly line below, which I assume is normal
11:33:34 <@boud> hm, that doesn't use any of the brush outline modes, but a normal cursor, so that's not conclusive :-(
11:35:20 <@boud> Gremriel: apart from checking the wacom settings and the windows pen settings, I'm a bit out of clues now.
11:36:16 < Gremriel> I turned of the settings in Windows Pen, which doesnt help, and I'm not sure where to look for anything curor related in the Wacom Settings
11:36:59 < Gremriel> is there a zip file available for v4 I could use to check
11:37:04 <@boud> sure
11:37:16 <@boud> We even have nightly builds: https://binary-factory.kde.org/job/Krita_Nightly_Windows_Build/
11:37:42 <@boud> and older versions are here: https://download.kde.org/Attic/krita/
11:37:45 < Gremriel> I haven't used Krita for a bit before I upgraded, but I did upgrade my video driver
11:37:53 <@boud> the bug report dates back to 2016, though
11:38:09 <@boud> so I am pretty sure it's not a recent regression in our code
11:38:12 < Gremriel> I've seen it before, a long time ago,
11:39:11 < Gremriel> there isn't a v4 on https://download.kde.org/Attic/krita/
11:39:30 <@boud> Gremriel: no, v4 is too new. Those are here: https://download.kde.org/stable/krita/
11:40:08 < Gremriel> ok, thanks
11:42:49 < Gremriel> @boud Ok, it's there in v4 as well now. It wasn't there before, but I hadn't used Krita in a couple of weeks. The only thing that changed is I updated my nVidia drivers
11:43:17 < Gremriel> I'l try to roll that update back, see if that makes a difference
11:55:01 < Gremriel> @Boud I rolled back to previous nvdia driver, rebooted and now the black bar is gone in v4.01
Comment 3 Halla Rempt 2018-04-11 09:57:26 UTC
11:57:15 < Gremriel> 391.01 works fine, 391.35 does not