Hi All,

 

It was found that setting the option pixelformat=RGB555 for the newer
version will give a clear image, though such an option was not needed on the
legacy DFB. Hope to get some explanation on the difference in behavior..

 

Thanks,

Prageeth

 

From: [email protected]
[mailto:[email protected]] On Behalf Of Prageeth
Sent: Monday, March 01, 2010 6:58 PM
To: [email protected]
Subject: [directfb-users] Same PNG using DFB0.9.24 and DFB1.2.8

 

Hi All,

 

We are in the process of upgrading a legacy DirectFB-0.9.24 system to
DirectFB-1.2.8, the later being built using buildroot-2009.05. However, the
PNG test image looks better on the legacy DFB than on the newer version! 

 

On using IDirectFBSurface::Dump(), the destination surface for RenderTo(),
and the final window surface to which Blit() is done, are both found to be
same using legacy and new DFB. However, the primary layer's surface seems to
differ as in attached ppm files. Moreover, the legacy version dumps a pgm
file also.

 

The DFB configuration of both systems were found to be same as attached.
There is no hardware acceleration involved. Frame buffer settings given by
fbset were also found to be same. However, the older 2.6.14.2 kernel had to
be retained so that various device drivers could be reused.

 

Hope using an older kernel need not be an issue. Any suggestions or
debugging tips would be of great help.

 

Thanks,

Prageeth

 

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