Hi all,

I am working on DirectFB QPA/Lighthouse support in Qt5 and I am
dealing with one test failure of the Qt pixmap tests. The name
of the test is loadFromDataImage and it is doing this:

a) png file -> QImageReader -> QImage -> QPixmap
b) png file -> IDirectFBImageProvider (on the buffer) -> QPixmap

compare depth, width/height and convert both to QImage and compare
the pixels. The pixel compare fails for the image that has an
alpha channel channel[1].
 
Before I start to look into the PNG decoder of DirectFB and Qt,
did anyone else see such a thing before? is DirectFB doing anything
special with decoding PNGs with alpha channels?

holger

PS: I am using the directFB-1.4 branch.

[1] 
http://qt.gitorious.org/qt/qtbase/blobs/master/tests/auto/gui/image/qpixmap/loadF
romData/designer_argb32.png

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