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Real-time Simulation of Volumetric Stage Light
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
2008 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

As current pre-visualization applications for the stage lighting industry only is developed for the PC-market, this master thesis can be considered as the first graphics engine prototype implementation of a completely new visualizer, not only for Mac, but for all platforms.

The result is a cross-platform application in real-time, fully concentrated in simulating a real stage spotlight which not only illuminates surfaces, but also the air itself, referred to as volumetric light. In order to achieve such a phenomenon, a texture-based approach is used, mainly implemented in a fragment shader and therefore takes full advantage of the powerful Graphics Processing Unit (GPU).

Similar to traditional ray tracing based algorithms, the method calculates light intensity on a per-pixel basis by integrating scattered light along the ray. The algorithm can also render surface shadows, shadow holes and create gobo effects in the volumetric lighting using a shadow mapping method. As the quality of light, shadows and surface characteristics are one of the most competitive features in a modern visualizer, these attributes are of greatest concern. I n order to alter light source parameters such as light intensity, color, zoom, etc. during run-time, a simple graphical user interface (GUI) is also attached to the application.

I n brief, this master thesis stands as the “proof of concept”, i.e. a study if the latest real-time graphics technology, including OpenGL- and shader programming, often used in Windows environments also can be used for volumetric stage light simulations in a Macintosh environment.

Place, publisher, year, edition, pages
2008. , 50 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-95357ISRN: LiU-ITN-TEK-A--08/027--SEOAI: diva2:636517
Subject / course
Media Technology
Available from: 2013-07-10 Created: 2013-07-03 Last updated: 2013-07-10Bibliographically approved

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Bajt, David
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