Chroma-keyed specular texture mapping in a graphics processor

Details Chroma-keyed specular texture mapping in a graphics processor Chroma-keyed specular texture mapping in a graphics processor

1997-09-17

2000-04-25

Powell, Mark R.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345430, 345431, 345150, G06T 740

Patent

active

060549939

ABSTRACT:
A graphics system includes a graphics controller for rendering polygons with specular highlighting (glare) based on a comparison of texel color values from a texture map to a range of color values. The graphics processor includes range registers for storing the range of color values and color comparators for comparing a texel color value to the range of colors stored in the range registers. The range of color values used in the comparison corresponds to the range of colors of those portions of a texture for which specular highlighting is appropriate, such as metallic surfaces off which light reflects. If a texel color value to be applied to a screen pixel is within the range of colors defined for specular highlighting, the graphics processor adds an appropriate specular component to the texel value.

REFERENCES:
patent: 4583185 (1986-04-01), Heartz
patent: 4586038 (1986-04-01), Sims et al.
patent: 4692880 (1987-09-01), Merz et al.
patent: 4714428 (1987-12-01), Bunker et al.
patent: 4715005 (1987-12-01), Heartz
patent: 4727365 (1988-02-01), Bunker et al.
patent: 4811245 (1989-03-01), Bunker et al.
patent: 4821212 (1989-04-01), Heartz
patent: 4825391 (1989-04-01), Merz
patent: 4855937 (1989-08-01), Heartz
patent: 4862388 (1989-08-01), Bunker
patent: 4868771 (1989-09-01), Lee et al.
patent: 4905164 (1990-02-01), Chandler et al.
patent: 4958305 (1990-09-01), Piazza
patent: 4965745 (1990-10-01), Economy et al.
patent: 4974176 (1990-11-01), Buchner et al.
patent: 5097427 (1992-03-01), Lathrop et al.
patent: 5126726 (1992-06-01), Howard et al.
patent: 5187754 (1993-02-01), Currin et al.
patent: 5191642 (1993-03-01), Quick et al.
patent: 5230039 (1993-07-01), Grossman et al.
patent: 5268996 (1993-12-01), Steiner et al.
patent: 5293467 (1994-03-01), Buchner et al.
patent: 5357579 (1994-10-01), Buchner et al.
patent: 5367615 (1994-11-01), Economy et al.
patent: 5420970 (1995-05-01), Steiner et al.
patent: 5459823 (1995-10-01), Silverbrook et al.
patent: 5710876 (1998-01-01), Peercy et al.

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