Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1998-02-24
2000-07-11
Powell, Mark R.
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
345426, G06T 1500
Patent
active
060880341
ABSTRACT:
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.
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Good-Johnson Motilewa
Hood Jeffrey C.
Munyon Dean
Powell Mark R.
Sun Microsystems Inc.
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