https://bugs.kde.org/show_bug.cgi?id=364184
Bug ID: 364184
Summary: Navigating Canvas is slow (Pan, Rotate, Zoom)
Product: krita
Version: 3.0
Platform: MS Windows
OS: MS Windows
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: usability
Assignee: [email protected]
Reporter: [email protected]
I noticed that in v3.0 I have really worse performance in navigating the Canvas
(Pan, Rotate, Zoom) compared to v2.9.10ae. On both versions I used 'Instant
Preview' and 'OpenGL' and 'Scaling Mode >> High Quality Filtering".
In v3.0 helps a lot (for me) turning off 'Display >> Use texture buffer' but
still I get really worse performance than I have in v2.9.10ae.
My PC: Intel Dual Core 2,2 Ghz, 4 GB Ram, Nvidia GeFroce G 103M, Win 7 64bit.
>From IRC (discussion about these issue):
<boud> it might be a change in Qt5 -- where Qt now forces double-buffering
<boud> it's so incredibly hard...
<boud> we started porting over a year ago, but only now we're really seeing the
regressions, other than the most obvious ones!
<eliotJ> Even on small resolution of image I have slow down...
<boud> what I think is also going is that 3.0 has memory problems compared to
2.9
Reproducible: Always
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