Qt Graphics Acceleration decision

[richard.davies]

Hi All,

I have an embedded platform and am looking on some advice/pointers on the choice of direction for hardware acceleration of QT system.

Currently I have my QT/QWS based system running on top of a simple Linux Framebuffer device, /dev/fb. So this is pretty cooll.....
However, now I would like to provide Graphics Hardware acceleration. The board I am using has some simple Bit Blitting, Colour filling hardware but currently provides no drivers to run them. I have full register APIs for the blitting and colour filling.

So my question is what is the best way to utilize this hardware?
Would I be best off writing a customer driver to interface to the QPainterDevice/QScreen?
Or should I implement a DirectFB driver and utilize the QT/DirectFB interface?
Or are there any other APIs I should consider? OpenVG or OpenGL (Probably would need to fallback to mainly software functions so not ideal).

In an ideal world whichever drivers/apis I write it would be nice to be able to reuse them in an X11 based system. Clearly this rules out the Custom QPainterDevice/QScreen combination.

Any advice on which hardware abstraction people have used would be much appreciated.

Thanks in advance,
Richard