Title :
GPU Based Real-time Shadow Research in Large Ship-handling Simulator
Author :
Xiao, Yang ; Yicheng, Jin
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 rendering 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 rendering of shadow
Keywords :
digital simulation; naval engineering computing; rendering (computer graphics); ships; solid modelling; virtual reality; 3D virtual scene; GPU; clipping; culling; object spatial relationship; real-time shadow; shadow volume algorithm; shadow volume geometry; shadow volume rendering; ship-handling simulator; silhouette extraction; stencil buffer; ultrashadow technology; virtual environment; virtual reality; visual information; z-fail algorithm; z-pass algorithm; 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 :
Information Visualization, 2006. IV 2006. Tenth International Conference on
Conference_Location :
London, England
Print_ISBN :
0-7695-2602-0