Patent
1995-07-20
1997-12-30
Zimmerman, Mark Z.
G06T 1550
Patent
active
057040249
ABSTRACT:
An apparatus for generating a reflection from a three-dimensional environment map. The apparatus includes a reflection vector generator which receives an eye vector and a normal vector neither of which need be normalized. This reflection vector generator generates a reflection vector without vector normalization. The reflection vector generator then couples to a decoder to supply the generated reflection vector. The decoder, in turn, determines a location where the reflection vector indexes the selected 2-dimensional map which forms part of the environment map.
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Foran James
Voorhies Douglas
Silicon Graphics Inc.
Vo Cliff N.
Zimmerman Mark Z.
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