A Novel Hardware Implementation for Specular Intensity of Phong Shading Used in Embedded Graphic Applications

Bing Chao Li; Ji Zeng Wei; Yi Song Chang; Wei Guo; Ji Zhou Sun

doi:10.4028/www.scientific.net/AMM.229-231.1146

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 229-231A Novel Hardware Implementation for Specular...

A Novel Hardware Implementation for Specular Intensity of Phong Shading Used in Embedded Graphic Applications

Abstract:

In this paper we propose a novel hardware implementation applied in embedded system for the power computation of specular term of Phong shading. Based on piecewise linear approximation, the power unit is implemented with SMIC 0.18μm CMOS technology and can complete 50 million power computation per second with the maximum approximation error of 0.00141 when the exponent of power is 20. The area cost is 12.3K gates. The maximum RGB color error of generated graphics is only 1 resulting in no visual difference compared with graphics generated by software.

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Periodical:

Applied Mechanics and Materials (Volumes 229-231)

Pages:

1146-1149

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.229-231.1146

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Online since:

November 2012

Authors:

Bing Chao Li, Ji Zeng Wei, Yi Song Chang, Wei Guo, Ji Zhou Sun

Keywords:

3D Graphics, LNS, Phong Shading

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References

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