Hi, all,

        Ask one question...
        In
http://cgit.freedesktop.org/xorg/driver/xf86-video-geode/tree/src/gx_dri
ver.c#n1560, this is the function " GeodeCalculatePitchBytes", in the
process of calculate the pitch, why does the compression require a power
of 2, what is the purpose? 
        Is it a pitch structure alignment?

Thanks,
Hunk Cui

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