A raster engine for computer graphics and image composition

Author

Chen, Chezn-Liang ; Lin, Chia-Hsing ; Lee, Hwun-Rri ; Jen, Chein-Wei

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

1994

fDate

5-8 Dec 1994

Firstpage

103

Lastpage

108

Abstract

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

Keywords

CMOS digital integrated circuits; VLSI; coprocessors; digital differential analysers; image texture; pipeline processing; rendering (computer graphics); 0.8 micron; SPDM CMOS VLSI technology; approximated Phong method; computer graphics; constant execution time; graphics coprocessor; image composition; modified digital differential analyser; operation modes; raster engine; rendering; shading algorithm; two-level pipeline; CMOS technology; Computer graphics; Coprocessors; Design engineering; Engines; Hardware; Ion accelerators; Pipelines; Rendering (computer graphics); Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Taipei

Print_ISBN

0-7803-2440-4

Type

conf

DOI

10.1109/APCCAS.1994.514532

Filename

514532