Bug report #1963

Updated by Giovanni Manghi about 2 years ago

QT's anti-aliasing output exhibits an inherent limitation of AA, where polygon edges are drawn/feathered twice and the background color "bleeds" through what are supposed to be tightly shared edges of polygons.



I wonder if some of the new render hints in QT4.4 > might help work around this issue:



http://doc.trolltech.com/4.5/qpainter.html#RenderHint-enum



See also: http://trac.mapnik.org/ticket/428, where I am working on a workaround using AGG that may apply to the QT renderer, given an exposed API.

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