Funny little story... I was profiling with valgrind recently and was shocked to discover a huge hiccup in the painting performance of my QImage raster based app. There was this repeated call to QPainter::drawTiledPixmap() that was soaking up CPU cycles. It was a true mystery as I had thought the canvas of my app was completely QImage based. Not so.

My previous post touched on the horrid FPS you can expect from any graphics intensive Qt app on the N810 at the moment. Ariya has pointed out one reason for the bad numbers: Qt decides to convert all 16 bit pixmaps to 32 bit before blitting even if the source QPaintDevice and the destination QPaintDevice are both 16 bit.

With all the recent interest in Nokia's N810 device among KDE and Qt developers I think it is important to note that Qt/X11 painting performance is badly broken when running under Hildon.

blah blah blah who took away the delete function for kdedevelopers.org blog entries blah blah blah

One picture is worth more than 10 words, but that's the limit for a blog entry :)

Due to our little hackweek project winning in two categories, I have the rest of the year so called "Innovative time off". In the beginning 10 days ITO sounded like nothing, but now I'm kind of forced go give up on real work and do fancy experiments :)

I don't know about you, but there's this hugely annoying behaviour of QDockWidgets. Since Krita 2 uses them, I tend to run into it a lot. The symptoms are simple: if you have a floating dock widget and Krita loses focus, the dock widget gets hidden.

Sounds like a rather silly annoyance, you might think. I'd agree with you, if not for the fact that I run into this all the time. Not only that, but I can actually provide a plausible scenario that would make using some configurations of KDE4/Krita2 impossible to work with.

My Application of the Day: Kochizz for Apache2 Configuration

My application discovery of the day (well of the yesterday, to be more precise), is Kochizz. Kochizz is a Qt4-based GUI tool to get to grips with the Apache2 configuration.

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