A novel hardware implementation for specular intensity of phong shading used in embedded graphic applications

作者：Li Bingchao^*; Wei Jizeng; Chang Yisong; Guo Wei; Sun Jizhou

来源：4th International Conference on Mechanical and Electrical Technology, ICMET 2012, 2012-07-24 to 2012-07-26.

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

• 3D graphics
• Approximation errors
• Area cost
• CMOS technology
• Color error
• Graphic applications
• LNS
• Novel hardware
• Phong shading
• Piecewise linear approximations
• Power units
• Visual differences

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.

• 出版日期2012
• 单位天津大学