Title :
GPU Based Real-time Shadow Research
Author :
Xiao, Yang ; Yicheng, Jin ; Yong, Yin ; Zhuoyu, Wu
Author_Institution :
Navigation Sci. & Technol. Inst., Dalian Maritime Univ.
Abstract :
Shadow can strengthen the reality of 3D virtual scene and provide important visual information for the objects´ spatial relationship in the scene. This paper presents a GPU based method for all the process of shadow volume algorithm. It can achieve greater shadow performance in ship-handling simulator than previous methods by migrating the silhouette extraction and shadow volume rending to GPU, and applying a series of techniques for culling, clipping, and simplifying shadow volume geometry. We make a series of optimization for the visual system of the ship-handling simulator such as limit the range of illumination, the alternation of z-pass and z-fail algorithm, using the ultra shadow technology and two sided stencil buffer to accelerate the rending of shadow
Keywords :
computational geometry; computer graphic equipment; feature extraction; optimisation; rendering (computer graphics); virtual reality; 3D virtual scene; GPU model; optimization; real-time shadow research; shadow volume geometry; shadow volume rending; ship-handling simulator; silhouette extraction; stencil buffer; ultra shadow technology; Acceleration; Computational modeling; Computer graphics; Layout; Levee; Light sources; Marine vehicles; Navigation; Sun; Visual system; GPU method; shadow; stencil buffer; ultra-shadow; virtual environment;
Conference_Titel :
Computer Graphics, Imaging and Visualisation, 2006 International Conference on
Conference_Location :
Sydney, Qld.
Print_ISBN :
0-7695-2606-3
DOI :
10.1109/CGIV.2006.48
