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International Conference on Computer Graphics, Imaging and Visualisation (CGIV'06)
GPU Based Real-time Shadow Research
Sydney, Australia
July 26-July 28
ISBN: 0-7695-2606-3
Yang Xiao, Dalian Maritime University, China
Jin Yicheng, Dalian Maritime University, China
Yin Yong, Dalian Maritime University, China
Wu Zhuoyu, Dalian Maritime University, China
Shadow can strengthen the reality of 3D virtual scene and provide important visual information for the objects? spacial 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.
Index Terms:
virtual environment; shadow; GPU method; ultra-shadow; stencil buffer
Yang Xiao, Jin Yicheng, Yin Yong, Wu Zhuoyu, "GPU Based Real-time Shadow Research," cgiv, pp.372-377, International Conference on Computer Graphics, Imaging and Visualisation (CGIV'06), 2006
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