Using A-Buffer in Radiosity

Anti-aliasing in form factor computation and precise determination of shadow boundaries are important issiresfor Radiosity method. A-Buffer is a technique introduced by Carpenter for anti-aliasing in hidden surjiace removal. In this paper, we propose a method based on the A-Bilffer to replace the Zbtlffer in the computation of form factors using the Hemicube for anti-aliasing. The method directl-v computes shadow boirndaries in contrast to the adaptive re-meshing approach. Though the processing of shadow boundaries is notfast, only one discontinuif-v meshing (no iferation) is required. We implement the method in an infrastructirre building design system.

• Type: Conference
• Year: 2001
• Where: CGI
• Authors: Q. Wang, J. H. Tang, C. H. Lim, H. C. Teh, Z. Y. Huang
• Keywords: Anti-aliasing, CGI 2001, Computer Graphics, Form Factors, Shadow Boundaries