Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
I've had people ask about the design of the pack functions, for example, why aren't we using bitfields. I wrote up a bit of background on why and how we ended up with the current design and we might as well keep that with the code.