Raster operation lookup and execution

Details Raster operation lookup and execution Raster operation lookup and execution

1996-10-11

1998-10-20

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Interface

G06F 1300

Patent

active

058253734

ABSTRACT:
The present invention is a method and apparatus for executing three-operand raster operation in two-operand raster environments. Structurally, the present invention includes a lookup table having one entry for each three-operand raster operation which is to be emulated. The entry associated with a particular three-operand raster operation includes a template and zero or more two-operand raster operations. Execution of the three-operand raster operation begins by retrieving the lookup table entry associated with the three-operand raster operation. Each two-operand raster operation in the lookup table entry is then executed in sequence. During execution, the template is used to provide a mapping which chooses which operands of the three-operand raster operation will be used as operands for the two-operand raster operation in the sequence.

REFERENCES:
patent: 5347631 (1994-09-01), Providenza et al.

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