An effective hardware architecture for bump mapping using angular operation

Authors:
S. G. Lee;W. C. Park;W. J. Lee;T. D. Han;S. B. Yang
Affiliations:
Yonsei University, Seoul, Republic of Korea;Yonsei University, Seoul, Republic of Korea;Yonsei University, Seoul, Republic of Korea;Yonsei University, Seoul, Republic of Korea;Yonsei University, Seoul, Republic of Korea
Venue:
Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware
Year:
2003

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Abstract

In this paper, we propose an effective bump mapping algorithm that utilizes the reference space with the polar coordinate system and also propose a new hardware architecture associated with the proposed bump mapping algorithm. The proposed architecture reduces the computations to transform the vectors from the object space into the reference space by using a new vector rotation method. It also reduces the computations for the illumination calculation by using the law of cosine. Compared with the previous approaches, the proposed architecture reduces multiplication operations up to 78%.