An efficient modified Phong shading algorithm & its low-complexity realization

Ming Hsiu Lai; Ming Feng Yu; Sau-Gee Chen

doi:10.1109/ISCAS.2002.1010424

An efficient modified Phong shading algorithm & its low-complexity realization

Ming Hsiu Lai^*, Ming Feng Yu, Sau-Gee Chen

^*Corresponding author for this work

Department of Electronics Engineering

Research output: Contribution to journal › Conference article

4 Scopus citations

Abstract

A modified mixing shading algorithm is proposed, which costs much less operations than that of Phong shading algorithm. Based on the algorithm, a low-complexity shading engine is designed. The shading engine is performed in log space, using low-complexity logarithm and anti-log algorithms. The algorithms are combinations of interpolation algorithm using Taylor's expansion and table-lookup operations. This results in small table size, low complexity and high operation speed. Based on EDA tool simulations, the log-space engine can achieve a high clock rate of 450MHz and a fill rate up to 117.5M pixels/second, with total gate count of 12061.

Original language	English
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	4
DOIs	https://doi.org/10.1109/ISCAS.2002.1010424
State	Published - 1 Jan 2002
Event	2002 IEEE International Symposium on Circuits and Systems - Phoenix, AZ, United States Duration: 26 May 2002 → 29 May 2002

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10.1109/ISCAS.2002.1010424

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Lai, M. H., Yu, M. F., & Chen, S-G. (2002). An efficient modified Phong shading algorithm & its low-complexity realization. Proceedings - IEEE International Symposium on Circuits and Systems, 4. https://doi.org/10.1109/ISCAS.2002.1010424

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abstract = "A modified mixing shading algorithm is proposed, which costs much less operations than that of Phong shading algorithm. Based on the algorithm, a low-complexity shading engine is designed. The shading engine is performed in log space, using low-complexity logarithm and anti-log algorithms. The algorithms are combinations of interpolation algorithm using Taylor's expansion and table-lookup operations. This results in small table size, low complexity and high operation speed. Based on EDA tool simulations, the log-space engine can achieve a high clock rate of 450MHz and a fill rate up to 117.5M pixels/second, with total gate count of 12061.",

author = "Lai, {Ming Hsiu} and Yu, {Ming Feng} and Sau-Gee Chen",

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AB - A modified mixing shading algorithm is proposed, which costs much less operations than that of Phong shading algorithm. Based on the algorithm, a low-complexity shading engine is designed. The shading engine is performed in log space, using low-complexity logarithm and anti-log algorithms. The algorithms are combinations of interpolation algorithm using Taylor's expansion and table-lookup operations. This results in small table size, low complexity and high operation speed. Based on EDA tool simulations, the log-space engine can achieve a high clock rate of 450MHz and a fill rate up to 117.5M pixels/second, with total gate count of 12061.

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