[Qgis-developer] qgis server: png8 broken?

[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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