Determining the level of detail for texture mapping in computer

Details Determining the level of detail for texture mapping in computer Determining the level of detail for texture mapping in computer

1996-11-15

1999-09-14

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06F 1500

Patent

active

059530154

ABSTRACT:
A fast and simple circuit for generating the MIP map LOD (level of detail) uses a look-up table (LUT) that stores values (1/2)log.sub.2 (X.sup.2 +Y.sup.2), wherein: (1) X and Y are in a single quadrant of the (X, Y) plane, for example, X.gtoreq.0, Y.gtoreq.0; (2) X.ltoreq.Y or Y.ltoreq.X; and (3) X or Y are in a predetermined interval, for example, 1.gtoreq.X.gtoreq.2; the interval is smaller than the maximum range of X or Y respectively.

REFERENCES:
patent: 5553012 (1996-09-01), Buss et al.
Ferraro, Richard F., "Learn 3D Graphics Programming on the PC" (Addison-Wesley Developers Press 1996), pp. 353-415.
Segal, M. et al., "Fast Shadows and Lighting Effects Using Texture Mapping", Computer Graphics, 26, 2, Jul. 1992, pp. 249-252.
Foley, J.D. et al., "Computer Graphics: Principles and Practice" (Addison-Wesley Publishing Company, 2nd ed. in C, 1996), pp. 826-828.
Heckbert, P.S., "Survey of Texture Mapping", IEEE Computer Graphics and Applications (1986), pp. 56-67.
Williams, L., "Pyramidal Parametrics", Proceedings of Siggraph '83, Computer Graphics, vol. 17, No. 3, Jul. 1983, pp. 1-11.
Knittel, G. et al., "Hardware for Superior Texture Performance", Proceedings of 10th Eurographics Workshop on Graphics Hardware (1995), pp. 33-40.
Ackermann, H., "Single Chip Hardware Support for Rasterization and Texture Mapping", Proceedings of 10th Eurographics Workshop on Graphics Hardware (1995), pp.15-24.

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