[directfb-dev] Re: Adding support for planar blitting

[Antonino Daplas <adaplas@pol.net>]

On Mon, 2002-06-17 at 15:53, Denis Oliver Kropp wrote:

> You implemented one of the two possible ways to fix the problem. You
> took the higher level generic way easing the development of drivers.
> I did the other way on friday that simply delegates the handling of
> planar formats to the drivers. I'm not sure yet but I think it's better
> because there may be support by the hardware to do blits from/to planar
> formats. The software driver now implements blitting from planar to
> planar.
> 
> Maybe both versions should be available to do accelerated software fallbacks
> by doing these three 8bit blits if planar blitting is not supported natively.
> 
I just saw the planar blitting implementation of gBlit in CVS.  I think
the one in the CVS is a much cleaner and better method of doing this
than the one I posted.

Looking at the code, I believe clipping will also work correctly, right?

Tony




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