A realtime rough surface renderer

Author

Ikedo, Tsuneo ; Obuchi, Eisaku

Author_Institution

Dept. of Digital Media Sci., Hosei Univ., Koganei, Japan

fYear

2001

fDate

2001

Firstpage

355

Lastpage

358

Abstract

A real-time hardware renderer for light-reflected images with rough surface properties has been developed as one of the graphics functions embedded within a single chip. The renderer comprises Bui-Tuong Phong´s (1975) and R.L. Cook & K.E. Torrance´s (1982) models on the basis of empirical, physical or wave theory. To simplify the hardware architecture and to avoid vector normalization, every polygon interpolation, surface normal, light-source direction, view direction and bump normal are represented by an angular form. The renderer produces reflective images of rough surfaces within 0.8 ns (1.25 billion pixels). This paper describes the new hardware-based algorithms and architectures

Keywords

computer architecture; firmware; interpolation; light reflection; real-time systems; reflectivity; rendering (computer graphics); rough surfaces; 0.8 ns; 1.25 Gpixel; Cook-Torrance model; Phong model; angular form; bump normals; bump-mapped Phong shading; embedded graphics function; empirical theory; hardware architecture; hardware renderer; hardware-based algorithms; light-reflected images; light-source directions; physical theory; polygon interpolation; real-time rough surface renderer; reflective images; surface normals; vector normalization; view directions; wave theory; Casting; Clocks; Computer graphics; Equations; Hardware; Interpolation; Reflectivity; Rendering (computer graphics); Rough surfaces; Surface roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Graphics International 2001. Proceedings

Conference_Location

Hong Kong

ISSN

1530-1052

Print_ISBN

0-7695-1007-8

Type

conf

DOI

10.1109/CGI.2001.934698

Filename

934698