Method for compressing data in a bit stream or bit pattern

摘要

One embodiment of the present invention is directed to a method for a computer graphics system comprising compressing a plurality of groups of bits by shifting compressed groups of bits into bit positions that are to be removed during the compression, the logic being responsive to a mask, wherein contents of the mask define variable amounts that the plurality of bits are shifted during the compression. Another embodiment is directed to a method for compressing a plurality of groups of bits to eliminate groups of bits that are to be unaffected by a computation, performing the computation, and thereafter decompressing corresponding data after performing the computation to restore data corresponding to previously eliminated groups of bits.