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-   -   How to use directfb on Qt ? (http://www.linuxquestions.org/questions/linux-mobile-81/how-to-use-directfb-on-qt-797527/)

robsonpg 03-24-2010 08:27 AM

How to use directfb on Qt ?
 
Hi Sirs,
Somebody could tell me how a can put Qt to use a directfb driver ? I tried using myprog - display direcfb and a env var QT_DISPLAY so, Qt still not found the driver. Perhaps I didnīt build the driver. Can someone send me a checklist about this config ?
Iīm using buildroot to build this configuration/distribution and a ARM platform (PXA300 with MMX suport). Qt using linuxfb is working well, but I need more performance to my graphics.

thanx

robsonpg

Mr-Bisquit 04-06-2010 01:31 AM

Look at dmesg and use apropos or locate to find the driver.

robsonpg 04-13-2010 08:22 AM

Thanx Mr-Bisquit .. I have solved the question putting a driver generated by Qt SDK (libqdirectfbscreen.so) in the /usr/lib/directfb-1.4-0/gfxdrivers directory. I removed the other that was criated by directfb (libdirectfb_pxa3xx.so). Btw, the performance of the Qt directfb driver is the same of LinuxFb ... :((


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