[directfb-dev] Re: Help me please! About 4bits pixel format.

[Ville Syrjälä <syrjala@sci.fi>]

On Fri, Dec 13, 2002 at 03:55:57PM +0800, James Su wrote:
> In my understanding, a surface
> may occupy a block of memory itself or share a block of memory with
> other surface, ie. a sub surface.

Well the only difference between "real" surfaces and sub surfaces is the
way you create them. After that it's just business as usual.

> Am I right? Then, for example if I
> alloc a sub surface from an odd x coordination within the father
> surface, i.e. (3,4), the memory offset of the sub surface will be 1.5
> bytes, but it's impossible!

Perhaps you can simply return DFB_INVAREA in those cases.

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/


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