Title :
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
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;
Conference_Titel :
Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-2440-4
DOI :
10.1109/APCCAS.1994.514532
