[Qgis-developer] qgis server: png8 broken?

[Marco Hugentobler]

Hi

Since there is now a second user describing that problem, I'm going to 
revert the performance optimisation in master (I'm using it without 
problem in production).

Regards,
Marco

Am 20.03.2014 20:29, schrieb Andreas Neumann:
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> Hi Paolo,
>
> I have the same issue on Ubuntu 12.04 servers. I discussed this with
> Marco Hugentobler and he wasn't able to reproduce the issue on his
> machine. My assumption is that it may be a some sort of library issue
> and my hope is that this issue will go away once Ubuntu 14.04 is
> released with newer qt and graphic libraries.
>
> Here is what I found about the issue:
>
> - - it only happens for purely black and white and purely grayscale output
> - - if you have only the slightes bit of color you are fine. It is good
> enough to e.g. have a gray or 230,230,229 - which still looks
> identical to 230,230,230 - the issue is gone
>
> As a workaround you could undo the commit titled:
>
> Revision 8990b66eed2f00253653e64c0ceb695c08a359b7: WMS server: even
> more performant png8 conversion
>
> I would love to see this fixed or gone as well. It is annoying for me
> to always have to patch QGIS server after each update.
>
> Andreas
>
> Am 20.03.2014 19:07, schrieb Paolo Cavallini:
>> Hi all. If I configure une layer as png8, the server displays an
>> unreadable image: anyone confirms? qgis 2.2 on Debian wheezy. All
>> the best. _______________________________________________
>> Qgis-developer mailing list Qgis-developer at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>>
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-- 
Dr. Marco Hugentobler
Sourcepole -  Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee