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A raster engine for computer graphics and image composition

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4 Author(s)
Chein-Liang Chen ; Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Chia-Hsing Lin ; Hwan-Rei Lee ; Chein-Wei Jen,

A raster engine (RE) is designed and implemented to improve the performance of computer graphics and image composition. The RE hardware can release more than 50% CPU loads. Furthermore, if the approximated Phong method which is proposed is applied, 89% CPU operations are reduced by the RE. As the features of this design, the techniques including modified digital differential analyser (DDA), 2-level pipeline, and constant execution time for calculating cosn θ are proposed in RE. Three operation modes, Gouraud and Phong shading algorithm and image composition are incorporated in RE. This accelerator will be implemented by 0.8 um SPDM CMOS VLSI technology

Published in:

Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on

Date of Conference:

5-8 Dec 1994