Bug 361698

Summary:	[MONOPRICE] Brush Tip Misalignment in the Preview Window when using Monoprice Tablet
Product:	[Applications] krita	Reporter:	Sam Keeper <unusualcows>
Component:	Tablets (tablet issues are only very rarely bugs in Krita!)	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	minor	CC:	griffinvalley, halla, osxyz
Priority:	NOR
Version First Reported In:	3.0 Alpha
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
URL:	http://stormingtheivory.tumblr.com/post/142710470765/trying-to-document-a-minor-bug-in-krita-for-some
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Brush tip misalignment in canvas

Description Sam Keeper 2016-04-13 00:27:10 UTC

The brush appears to be misaligned in the brush preview window when using a Monoprice tablet. In the linked image you can see that the cursor seems to be offset from where the brush is actually painting by quite a few pixels diagonally. In the second image you can see painting with the mouse--the brush is NOT misaligned in this case. Thankfully, the brush also is apparently NOT misaligned on the actual canvas, JUST on the preview window.

I am running this on Windows 8.1 using a Monoprice with UC-Logic drivers, version 8.0.2015.204.

Reproducible: Always

Steps to Reproduce:
1. See system and driver notes
2. Open Edit Brush Settings
3. Paint in the preview window with a standard mouse and with a stylus; note whether the cursor tip aligns with the center of the brush area.

Actual Results:  
Brush tip appears to be consistently misaligned.

Comment 1 Sam Keeper 2016-04-18 20:17:48 UTC

Created attachment 98453 [details]
Brush tip misalignment in canvas

Update on this bug: I've discovered that apparently there's something odd going on with the alignment in the main canvas itself, as seen here. The eyedropper tool is detecting the color several pixels down and to the right of where it is actually located on the screen.

Comment 2 Halla Rempt 2016-04-19 09:20:42 UTC

Hi Sam,

Thanks for your report. I'm afraid I cannot reproduce it, mainly because we don't have the hardware. Wacom, n-trig, yiynova and huion all seem to work correctly. Could you try to capture a tablet log for us? Maybe that'll help.

Please check  https://docs.krita.org/KritaFAQ#Tablets for a howto.

Comment 3 wolthera 2016-05-11 20:07:58 UTC

Huion and Monoprice are mostly the same thing with different drivers, so its probly related.

*** This bug has been marked as a duplicate of bug 362487 ***

Comment 4 eliotJ 2016-05-11 22:58:02 UTC

Hi

Does it's also exist in Krita v2.9.11 or does it's a regression in v3.0 ?