Hi !

First, big thanks to the Krita community and developers, it is an awesome software !

I'm experiencing rendering artifacts. First noticed while using command-line export with : krita myfile.kra --export --export-filename myfile.png

After some testing, the artifacts are also visible when file is opened in krita, before editing anything. If problematic layer is hidden/unhidden, the re-rendering doesn't produce the artifacts. But unfortunately it is not possible to do so when rendering from the command line.

Minimal test-case :

Code: Select all

- group layer with drop shadow effect
    - empty paint layer
    - paint layer with lines as support for the effect

On opening/reopening, it displays vertical and horizontal lines, seemingly artifacts from the tile-rendering engine, as seen on this image :



Tested on both Krita 3.3.3 and krita-4.0.0-beta1.1 on debian testing.

Does any one know a work-around for this issue ?
Is render-tile size configurable somewhere, or other settings, to try and mitigate the artifact ?
Are you able to reproduce the issue ?

Any advice is warmly welcome !

Thanks !

Victor

tokiop wrote:Are you able to reproduce the issue ?

I've checked and I'm getting artifacts also with Krita 4.0.0-beta1.1.appimage on Ubuntu 14.04.
A workaround for me is to disable and re-enable the visibility of the layer.

(Created a new bug report: https://bugs.kde.org/show_bug.cgi?id=390299)

Thanks mvowada for your quick reply and taking the time to reproduce ! It gives a clue that the issue does not come from my system.

Hide/unhide works here too as a workaround, but for dozens of files it is quickly difficult to export manually.

Ho, just saw your bug report, thanks for it !