Bump mapping algorithm for polygonal model and its hardware implementation

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++ 4+El ::r4q. qgl Vol.2, No.l P.I5-23

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Seung-Hak Choi, Byung-ln Mun, Kil-Su Eo, Hong-Youl Lee d C * ; J z l € S r z I E ^ € + d

Graphics Lab., Samsung Advanced Institute of Technology

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Abstract

Bmp mapping is m elegmt rendering technique to simulate wrinkled surfaces such as bak, which enables to produce more realistic image t}tan texture-mapped one. This paper presents a new algorithm for bump mapping along with a hardware architecture to run our algorithm in real-time. The proposed approach is more efficient than previous one, and in particular, our hardware trchit€ctue is simpler to implement.

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Computer Graphics Society

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16 Computer Graphics Society

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Bump mapping algorithm for polygonal model and its hardwars implementation

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Computer Graphics Society 18

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tll J. F. Blinn, "Simulation of wrinkled surfaces,"

Canputer Graphia (I']roc. SIGGRAPH '78), Vol.

12, w. M - n2, rW8.

t2l N. L. Max, "Horizon mapping: shadows for bump-mapped surfaces," The Viswl Computer, Vol. 4, pp. 109 - ll7, 1988.

[3] I. Ernst, D. Jackdl, H. Riisseler, and O. Wittig,

"Hardware supported bump mapping: a step towards higher quality real-time rendering,"

Proc. I)th Eurographics Workshop on Graphics Hardware,.pp.63 - 70, 1995.

[4] Fl Chen and E.-Fl Wu, "An efficient radiosity solution for burnp texture generatior!" Qrquter Gmphits (t'}roc. SICCRAPH '90), Vol. 'A, p. l'h - 134,'1s0.

tsl B.-T. Phong, "Illumination for computer generatd pictures," CACM, Vol. 18, pp. 3ll - 317, 1975.

[6] J. Schlag, "Fast embossing effects on raster image data," In Paul Heckbert, editor, Graphics Gem M, pp. 433 - 437, 1994.

t7l G. Wolberg, Digital image warping, IEEE Computer Society Press, Los Alamitos, CA, 1990.

[8] G. eishop and D. I\4 Weirrrer, 'Fast Ptrong shading," bnputer Gmphis G'roc. SICCRAPFI 'il6), Vol. 20, pp. 103 - lm, 1986.

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