A new technique for rendering complex portals.

Nick Lowe; Amitava Datta

doi:10.1109/tvcg.2005.1

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A new technique for rendering complex portals.

Nick Lowe·Amitava Datta

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Abstract

In this paper, we identify a general paradigm for portal-based rendering and present an image-space algorithm for rendering complex portals. Our general paradigm is an abstraction of portal-based rendering that is independent of scene geometry. It provides a framework for flexible and dynamic scene composition by connecting cells with transformative portals. Our rendering algorithm maintains a visible volume in image-space and uses fragment culling to discard fragments outside of this volume. We discuss our implementation in OpenGL and present results that show it provides correct rendering of complex portals at interactive rates on current hardware. We believe that our work will be useful in many applications that require a means of creating dynamic and meaningful visual connections between different sets of data.

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Algorithms Computer Graphics Computer Simulation Environment Image Interpretation, Computer-Assisted Imaging, Three-Dimensional Online Systems Pattern Recognition, Automated Signal Processing, Computer-Assisted Subtraction Technique User-Computer Interface Comparative Study Evaluation Study Journal Article Research Support, Non-U.S. Gov't Validation Study

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Nick Lowe, Amitava Datta. A new technique for rendering complex portals.. https://doi.org/10.1109/tvcg.2005.1

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