On Sat, 2011-07-16 at 16:18 +0800, Daning Yang wrote:
> Hi all,
> 
> 
> I developed an radar application based on Linux Kernel 2.6 + DFB 1.4.
> The hardware platform is CPU Celeron 1G + Intel 852/855. First, I
> built the kernel and start the application by VESA. As you know, all
> rendering is on software by CPU and the FPS is 35. Then I rebuilt the
> kernel with IntelFB and in the application I checked the DFB is using
> i830 driver. But the FPS is only less than 10. I think the i830 driver
> should do some hardware acceleration, but why it is even slower?

You should consider to run df_dok from the directfb-examples package.
That should give you an idea on what functions are hardware-accelerated
and which are not and what performance you can expect.


Sven



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