[Mesa-dev] Enable ARB_map_buffer_alignment in all drivers - first try

[Thomas Prescher]

Hi,

today I read an article on phoronix
(http://www.phoronix.com/scan.php?page=news_item&px=MTUyNDY) which
linked to a wiki page (http://wiki.freedesktop.org/dri/NewbieProjects/)
where easy projects to start with were listed. I gave it a shot and
tried to implement the ARB_map_buffer_alignment extensions for all
drivers. Long story short, here is the patch I've created. I'm not
completely sure whether everything I did was what the creator of the
wiki page had in mind. I am especially unsure about the last item. Ofc
it would be very great iff one of you  guys can provide some feedback :)

-Thomas

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