https://bugs.kde.org/show_bug.cgi?id=427376
Bug ID: 427376
Summary: Gradient map filter layer very slow. Maybe only for
windows.
Product: krita
Version: 4.4.0-beta2
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: Filter Layers
Assignee: krita-bugs-n...@kde.org
Reporter: misha.bossm...@yandex.ru
Target Milestone: ---
I have fx 8350 and rx 560. Windows 10 pro 64-bit. Usually I use Krita plus, but
now I checked it on different versions.
I have a very bad gradient map. In 8-bit it is tolerable, but in 16-bit it
takes too long.
What it looks like. I am creating a filter layer. Nothing happens. i choose a
gradient. Nothing. I can't press anything in Krita either. After a couple of
minutes, the result of the first gradient begins to be shown, which opens by
default (foreground color to transparency). And only after its complete
processing, the calculation of the second selected gradient begins.
Color space is not affected. 8-bit or 16-bit, yes very much. Direct3d and
opengl seem to work the same way. The filter layer in the group gets even
slower. The filter brush with gradient map doesn't work well either. But I do
remember that when I experimented with the brush filter before, it worked
quickly.
Perhaps this is something with Windows. I checked on a linux VM. (mint mate)
And there it works. In 16-bit it is still slow, but in 8-bit I can draw in real
time. In the virtual machine!
So what else do I need to check?
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