Bug: Pattern disappears on high zoom-levels or bitmap export
Hello,
I'm using lithographic patterns from the USGS in my project. Download can be found hier: https://blogs.otago.ac.nz/si-geology/resources/illustrationgraphics-resource...
One of the patterns is used in the attached file.
If you open this file an zoom into the filled object, the pattern disappears at zoomlevel 3000%. Also the pattern is not exported to PNG in "higher" resolutions (say 2000px width)
This behaviour crashes my project completely :(
Is there a solution?
Greetings Slub
Hi Slub,
according to suv's research on this bug report (https://bugs.launchpad.net/inkscape/+bug/1465753), the problem depends on the distance of the handles to the object, and is a regression in cairo.
I didn't download your file, but for my pattern, what worked was to drag the x shaped handle of the pattern closer to the object.
Regards, Maren
Hello,
I'm using lithographic patterns from the USGS in my project. Download can be found hier: https://blogs.otago.ac.nz/si-geology/resources/illustrationgraphics-resource...
One of the patterns is used in the attached file.
If you open this file an zoom into the filled object, the pattern disappears at zoomlevel 3000%. Also the pattern is not exported to PNG in "higher" resolutions (say 2000px width)
This behaviour crashes my project completely :(
Is there a solution?
Greetings Slub
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On 2015-09-04 24:06 (+0200), maren wrote:
according to suv's research on this bug report (https://bugs.launchpad.net/inkscape/+bug/1465753), the problem depends on the distance of the handles to the object, and is a regression in cairo.
Just to clarify (since above statement is attributed to me): we do not know (nor claimed) that this is actually a bug in the external cairo graphics library: what we know at this point is that the reported issue reproduces with all Inkscape builds after the merge of Inkscape's new cairo-based renderer in revision 10326.
AFAICT the version of cairo does not play a role (tested and reproduced with 0.91+devel r14341 using cairo 1.12.2, 1.14.2 and cairo 1.14.3 (git master)).
I didn't download your file, but for my pattern, what worked was to drag the x shaped handle of the pattern closer to the object.
I tested it, and the workaround to drag the pattern handles closer to the object which uses it does work in this case, too.
With the workaround in place, I'd still recommend to not zoom in too closely - it might turn black (instead of disappear), or hang your system (excessive memory usage) and eventually crash (in pixman):
https://bugs.launchpad.net/inkscape/+bug/1292459 https://bugs.launchpad.net/inkscape/+bug/1489168
Regards, V
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