초록 ▼

Three-dimensional compressed geometry is decompressed with a unit having an input FIFO receiving compressed data bits and outputting to an input block state machine and an input block, whose outputs are coupled to a barrel shifter unit. Input block output also is input to Huffman tables that output

Three-dimensional compressed geometry is decompressed with a unit having an input FIFO receiving compressed data bits and outputting to an input block state machine and an input block, whose outputs are coupled to a barrel shifter unit. Input block output also is input to Huffman tables that output to the state machine. The state machine output also is coupled to a data path controller whose output is coupled to a tag decoder, and to a normal processor receiving output from the barrel shifter unit. The decompressor unit also includes a position/color processor that receives output from the barrel shifter unit. Outputs from the normal processor and position/color processor are multiplexed to a format converter. For instructions in the data stream that generate output to the format converter, the decompression unit generates a tag sent to the tag decoder in parallel with bits for normals that are sent to the format converter. The decompressed stream of triangle data may then be passed to a traditional rendering pipeline, where it can be processed in full floating point accuracy, and thereafter displayed or otherwise used.

대표청구항 ▼

[ What is claimed is:] [1.] A method for decompressing a plurality of variable-length instructions, said method comprising:receiving a data stream which includes a first instruction of said plurality of variable-length instructions, wherein said first instruction is executable to perform a first ope

[ What is claimed is:] [1.] A method for decompressing a plurality of variable-length instructions, said method comprising:receiving a data stream which includes a first instruction of said plurality of variable-length instructions, wherein said first instruction is executable to perform a first operation and includes one or more header-body pairs, wherein each of said one or more header-body pairs includes a fixed-length header portion followed in said data stream by a variable-length body portion;decompressing a first header-body pair which includes a first header portion followed in said data stream by a first body portion, wherein said first header portion and said first body portion include a first data portion having one or more data values usable for performing said first operation, wherein said decompressing said first header-body pair includes:accessing said first header portion from said data stream by selecting a predetermined number of bits, wherein said first header portion includes sufficient information to determine a length value of said first body portion;determining said length value of said first body portion from said first header portion;accessing said first body portion from said data stream by selecting a number of bits equal to said length value of said first body portion;utilizing said one or more data values in said first data portion in order to perform said first operation.