Blobbly tabletlog on windows
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From BA, guy was nice enough to generate a tablet log for us, so maybe it'll help. (He has an intuous pro large, but hasn't mentioned windows system yet)

"And here is the visual result of the strokes. Basic smoothing was activated (assistant unchecked).
Notice the irregular knots for two or three strokes (which I did not draw) and the straight sections.
(1) indicates the first stroke. Also notice the abrupt greys - the transition is visible"

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This happens with pre-alpha but not with stable?

abrahams added a comment.EditedJan 30 2016, 5:48 AM

I wrote a tablet log analyser in Julia this evening. Here's a plot of the first stroke. Looks like some points are right on top of each other. It is very strange to me how few events have any decimals in the hires coordinates, because in my log almost all numbers include some decimal precision.

The "point 29" label corresponds to 00000224 in the tablet log. The events here seem out of order - like points 27, 28 and 30 are all right below 29, and there are no MouseMove events in between the TabletMove events at this point in the log.

Maybe something is preventing the code from being re-entrant? Yuck, yuck, yuck, what a pain.

I made a fresh Windows build.. my tablet log is not similar to that one in the slightest. I have no idea what is making that tablet data look so crazy. @rempt, did you apply the patch disabling Qt builtin tablet support to the Windows release? (I am assuming you did since the log looks kinda OK, but I don't know what else could be different.) Also what version of Qt are you building with?

rempt added a comment.Jan 31 2016, 2:37 PM

I have to check which Qt there's on the system I made the release with, but it could be that it's a Qt 5.6 beta without patches. Could you give me the link again?

Patch is here:

http://blenderartists.org/forum/showthread.php?390835-Krita-3-Alpha-is-up&p=3004605&viewfull=1#post3004605

Fixed :)

There's someone else with problems now, but I am not sure they're on windows...