https://bugs.kde.org/show_bug.cgi?id=361709
Bug ID: 361709
Summary: With more than 1 curve based assistant, zooming in
will black screen part or all of the drawing window
Product: krita
Version: 3.0 Alpha
Platform: MS Windows
OS: MS Windows
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: Tools
Assignee: krita-bugs-n...@kde.org
Reporter: elk...@yahoo.com
If you have more than 1 curve based assistant, e.g. Fish Eye Point, Spline,
Concentric Ellipse, zooming in will black screen part or all of the drawing
window. It can be any combination of curved based assistants. For example, 2
Fish Eyes, 1 Spline & ! Fish Eye, 1 Concentric & 1 Spline will all cause the
problem.
The zoom factor at which this happens varies, but I believe it has to do with
the position of the assistants' control points. Once a certain number of them
are no longer visible in the UI the error is triggered.
This does not happen with line based assistants, like Vanishing Point, Parallel
Ruler, etc., but can happen with Perspective grid.
Turning off Open GL eliminates the black screening of the drawing window, but
without it the assistant preview lines don't function and the cursor leaves a
'permanent' light gray trail. This trail is strictly a display error and not
part of the image, and can be removed by re-enabling OGL.
Happens with both Windows 7 64bit SP 1 & Linux Mint 17 LTS, Nvidia 750 Ti
This does NOT happen with Krita 2.9.11, so I assume it has something to do with
the switch to QT.
Reproducible: Always
Steps to Reproduce:
1.Make at least 2 curve based assistants. Putting control points outside of the
image will make it happen at lower zooms
2.Zoom in.
Actual Results:
Black screened drawing window
Expected Results:
Display the drawing window normally
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