You can look at the ST open source DirectFB implementation for
STi5528, STm8000 and STb7100 (SH4 only at the moment) chipsets,
as an example. If you are internal to ST use:
 
 
or if you are external to ST use:
 
 
You can diff our RPM sources against the official 0.9.22 release to see what
you have to change to add a new card. Note that at this time we only support
a single primary surface layer and we do not support any of the layer features
such as colour keying or transparency. So this implementaiton only gives you
a sense of what you need to do to accelerate basic blits and fills.
 
Regards,
-stephen
 
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