For this episode of the graphics dojo I’ve implemented the classic radial blur effect. The core radial blur effect is implemented with per-pixel manipulation, which Qt lets us do quite elegantly using the QImage class. The final dojo example uses the radial blur effect in combination with scrolling text drawn using QPainter to create a nice visual impression. Below is a screenshot of the effect as well as a recording:
As usual, the source code is available from the SVN repository: svn checkout svn://labs.trolltech.com/svn/graphics/dojo/radialblur
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Nice but it takes 70% of my cpu resources to run it
The effect is very very nice, but the CPU consumption is *huge*. Even with no text at all, it eats the 60% of this T9300 (2,5GHz).
Keep up the good work!
There is definitely need of GPU acceleration in those effects
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