https://bugs.kde.org/show_bug.cgi?id=363320
Bug ID: 363320
Summary: Very bad performances on large files (can't draw)
Product: krita
Version: git master
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: grave
Priority: NOR
Component: Brush engine
Assignee: krita-bugs-n...@kde.org
Reporter: welc...@nylnook.com
I work on a large file (8192x8192 pixel), as I use to when I want to do some
illustration for an A2 poster. it work well in Krita 2.9 if I took care of not
filling my RAM with too much layers.
It worked starting from scratch in Krita 3 (recompiled this morning)… but I
stopped my work, I closed Krita, and now I want to work again on it … But now
brush strokes display and computation is so slow I can't even paint.
Switching on and off layer visibility seem to allow computation and display to
solve. But I can't do that between each brush stroke !
See this video : https://drive.google.com/open?id=0B-5J--XsvWh-YXBMZ1RXbVVQc0U
You can download the kra file here :
https://drive.google.com/open?id=0B-5J--XsvWh-azJ0V2NOai1xU00
Might be related to Bug 363225 : https://bugs.kde.org/show_bug.cgi?id=363225
(same config : I use Krita 3 Beta on Archlinux (Antergos distrib) build from
AUR on a new shiny (since a few months) Wacom Cintiq 27 Touch tablet, with
Gnome 3.20, libwacom 0.18 and xf86-input-wacom 0.32 on an AMD gpu and OpenGL
enabled on a Radeon R9 290…)
Disabling OpenGl doesn't change anything, no more than disabling Instant
preview.
If it's not my config, you should be able to reproduce by simply opening the
file and try to draw.
Reproducible: Always
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