MIP map blending in a graphics processor

Details MIP map blending in a graphics processor MIP map blending in a graphics processor

1997-10-10

2000-12-05

Zimmerman, Mark

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

345428, 345431, G06T 1140

Patent

active

061573868

ABSTRACT:
A graphics system includes a graphics controller for rendering polygons with texture using an improved MIP mapping technique in which texels from multiple MIP maps are blended together. The graphics controller includes a polygon engine for rendering the pixels in a polygon and at texture map engine for selecting texture elements ("texels") from an appropriate texture map to be applied to the pixels rendered by the polygon engine. The texture map engine generates texel coordinate values from pixel coordinate values provided by the polygon engine. Texel values are selected from a set of texture maps each map varying from the others by the level of detail of the texture in each map. The graphics controller computes a scale factor for each texel value according an are a bounded by adjacent texel coordinates generated by the texture map engine. The scale factor is then used to compute a weighted average of texels form more than one MIP maps. In the preferred embodiment, vectors are defined for each the adjacent texels and the area is determined from the magnitude of the cross product of the vectors.

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: 5126726 (1992-06-01), Howard et al.
patent: 5187754 (1993-02-01), Currin et al.
patent: 5191642 (1993-03-01), Quick 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: 5490240 (1996-02-01), Foran et al.
patent: 5651104 (1997-07-01), Cosman
patent: 5699497 (1997-12-01), Erdahl et al.
patent: 5734386 (1998-03-01), Cosman
patent: 5835097 (1998-11-01), Vaswani et al.
patent: 5856829 (1999-01-01), Gray III et al.
patent: 5949426 (1999-09-01), Rich

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