Computer graphics system with improved blending

Details Computer graphics system with improved blending Computer graphics system with improved blending

1996-10-30

1999-04-20

Zimmerman, Mark K.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

345150, 345152, 345155, G06F 1500

Patent

active

058961364

ABSTRACT:
A blending system and method for blending source pixel color values with destination pixel color values in a computer graphics system according to a source alpha value includes a resolution increasing circuit that increases a number of bits in the source alpha value to produce an increased resolution source alpha value. Blending hardware implements a blending routine according to a blending equation to blend the source pixel color values with the destination pixel color values using the increased resolution source alpha value. In one embodiment, the resolution increasing circuit includes a squaring circuit that squares the source alpha value.

REFERENCES:
patent: 5592196 (1997-01-01), Nakamatsu et al.
patent: 5754185 (1998-05-01), Hsiao et al.

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