VRML scene graphs on an interactive ray tracing engine
Dietrich, A.; Wald, I.; Wagner, M.; Slusallek, P.
Virtual Reality, 2004. Proceedings. IEEE
Volume , Issue , 27-31 March 2004 Page(s): 109 - 282
Digital Object Identifier   10.1109/VR.2004.1310063
Summary: With the recent advances in ray tracing technology, high-quality image generation at interactive rates has finally become a reality. As a consequence ray tracing likely plays a larger role in visualization systems, enabling the conception and creation of completely new interactive graphics applications. In this paper, we describe the design and development of a ray tracing-based VRML browser and editor as a case study of such an application. It exploits all advantages of ray tracing, including physically-correct plug and play shading and support for large models. In particular we demonstrate how to overcome the limitations that result from existing scene graph libraries and data exchange formats still being targeted towards rasterization technology. Also we show how to extend the VRML lighting model and to optimize scene graph handling for ray tracing.

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