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[directfb-dev] Re: Help me please! About 4bits pixel format.
Hi, Thank you for your help. Ville Syrjäl wrote: >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. > > How about the memory layout? Could you please tell me how a surface memory looks like? Does sub surface have its own buffer? I don't understand the internal of surface. Could you please give me some information? > > >>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. > > > You mean, I just restrict the surface boundary at even coordination? But I don't know if it's acceptable for user. Regards James Su -- Info: To unsubscribe send a mail to email@example.com with "unsubscribe directfb-dev" as subject.