Just reporting a bug:

To put it bluntly Krita isn't able to handle curves making it impossible to draw circles or ovals free hand. The curve becomes a square-ish mess as it can be seen here:
https://i.imgur.com/L5D6j0N.mp4

Lots of unwanted angles that make nearly impossible to draw curves.


I also add a clip from Clip Studio Paint, not to imply CSP is "better" or whatever, But to show how this issue is exclusive to Krita and it doesn't happen in other art software, and how it isn't a "drive issue".

https://imgur.com/YuWqHqg

Curves are super smooth in other software as you can see. Sketchbook pro, Photshop, and Meedibang work with no issue whatsoever.

Bumping because this is a serious bug that makes the program outright unusable for lineart.

maybe you can give more informations to be helped :
* What version of macOS do you use?
* Which version of Krita?
* which tablet brand / driver version?
* Do you use hardware acceleration...

i can't load the images in your links.
i remember that wacom driver has issues like you describe : https://docs.krita.org/fr/user_manual/d ... blets.html

mcoudert wrote:maybe you can give more informations to be helped :
* What version of macOS do you use?
* Which version of Krita?
* which tablet brand / driver version?
* Do you use hardware acceleration...

i can't load the images in your links.
i remember that wacom driver has issues like you describe : https://docs.krita.org/fr/user_manual/d ... blets.html

Hey there. Its odd imgur doesn't load for you. In any case, it isn't a driver or tablet issue, because, as I said, it only affects Krita.

The issue is that Krita can't handle curves as it adds unnecessary angles making them look like squares instead of smooth curves. This makes it impossible to draw ovals and curves



vs

CSP



As can be seen above the curves squares at certain points. I added a red arrow

BOTH: stabilization = 0.

I might be the only one reporting this issue given everyone is painting and I'm just trying to do lineart not paint.


*mac os Sierra 10.13.6
*Latest 4.2.0
*Wacom Intuos
*No hardware acceleration

FallenLegend wrote: In any case, it isn't a driver or tablet issue, because, as I said, it only affects Krita.

That statement has been made by people before and a developer (often Boudewijn) has often answered with a detailed explanation of why the statement is not correct and that it's always been a tablet/driver problem and not a krita problem.

It's a simple fact that krita can handle curves and I'd be very surprised if you were the only person drawing lineart on a Mac with a Wacom Intuos tablet. Besides that, people who 'paint' also make curves.

'Wacom Intuos' is a wide range of tablets so it would be useful if you could be more specific and give the exact model name/number.

The latest version of krita is 4.2.2 so you could try downloading that to see if your situation improves.

ahabgreybeard wrote:

FallenLegend wrote: In any case, it isn't a driver or tablet issue, because, as I said, it only affects Krita.

That statement has been made by people before and a developer (often Boudewijn) has often answered with a detailed explanation of why the statement is not correct and that it's always been a tablet/driver problem and not a krita problem.

It's a simple fact that krita can handle curves and I'd be very surprised if you were the only person drawing lineart on a Mac with a Wacom Intuos tablet. Besides that, people who 'paint' also make curves.

'Wacom Intuos' is a wide range of tablets so it would be useful if you could be more specific and give the exact model name/number.

The latest version of krita is 4.2.2 so you could try downloading that to see if your situation improves.

Most artists aren't following every Boudewijn post here to know what he says given we aren't developers up to date on every bug report. But I digress. It does seem odd drivers work fine with every program except krita. Which is, again, not to bash Krita, but to be more informative on my report. :

*I updated to krita 2.2
*Wacom intuos medium 2018
https://www.wacom.com/en-us/products/pe ... com-intuos

If anything the problem seems to be worse:
krita 2.2

Ovals turn out to be very squareish:

Hi!

This needs investigation as I do get this type of line segmentation during high load operations, but I dont' think we can do much in the short term to fix this. Im aware of the issue and I keep investigating as it is worse for some and non existant to others.

This is what I experience: At the top the main display I use to draw, the is no visible breakage, on the bottom the retina dispaly of my macbook. I sometimes breaks.


Some points to consider:
- There is no special tablet code dor macOS, we use what the OS send us.
- I've experienced something similar during high loads or busy times in the OS, but oddly enough it's worse when Krita is over the retina display (attached second monitor breaks the line only on very high cpu usage, and oddly high device I/O)
- If you have a mac with an ATI card or a dual card setup, it uses the ATI card and openGL in mac in ATI is known to be problematic. (for us at least, and we also have no way of testing such devices)
- we use OpenGL to accelerate the canvas and Apple has OpenGL highly neglected to the point that currently it's been deprecated in favor of Metal. This could or could not be the source of some performance issues.

Can you tell us more about your system?
Mac model
Graphics drivers specs (Intel or ATI, or both)
If macbook, are you on retina display?
macOs version (it can't be Sierra, as krita doesn't run on Sierra)

.

ghevan wrote:Hi!

This needs investigation as I do get this type of line segmentation during high load operations, but I dont' think we can do much in the short term to fix this. Im aware of the issue and I keep investigating as it is worse for some and non existant to others.

This is what I experience: At the top the main display I use to draw, the is no visible breakage, on the bottom the retina dispaly of my macbook. I sometimes breaks.


Some points to consider:
- There is no special tablet code dor macOS, we use what the OS send us.
- I've experienced something similar during high loads or busy times in the OS, but oddly enough it's worse when Krita is over the retina display (attached second monitor breaks the line only on very high cpu usage, and oddly high device I/O)
- If you have a mac with an ATI card or a dual card setup, it uses the ATI card and openGL in mac in ATI is known to be problematic. (for us at least, and we also have no way of testing such devices)
- we use OpenGL to accelerate the canvas and Apple has OpenGL highly neglected to the point that currently it's been deprecated in favor of Metal. This could or could not be the source of some performance issues.

Can you tell us more about your system?
Mac model
Graphics drivers specs (Intel or ATI, or both)
If macbook, are you on retina display?
macOs version (it can't be Sierra, as krita doesn't run on Sierra)

.

Thank you!

To answer your questions:
*Model: Mac air 2011
*Intel HD Graphics 3000 384 MB
*Nope. It's a non retina model
*High Sierra 10.13.6 (forgot to mention the high part)