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Using Instancing to Efficiently Render Carbon Nanotubes

Burger, Michael and Bischof, Christian
Mehl, Miriam (ed.) (2014):
Using Instancing to Efficiently Render Carbon Nanotubes.
In: 3rd International Workshop on Computational Engineering, Stuttgart, Germany, 3, [Online-Edition: http://ipvs.informatik.uni-stuttgart.de/SGS/ICCE2014/],
[Conference or Workshop Item]

Abstract

In this paper, we present an efficient way to visualize Super Car- bon Nanotubes (SCNTs). SCNTs are complex, hierarchical structures and their models easily consist of more than 1 million atoms. Our SCNTs are modeled as graphs of uniform nodes and egdes. We show that OpenGL instancing is a very suitable technique for rendering such large graphs, because they only consist of two different types of geometry. Our visualizer software exploits this property and we demonstrate that it allows to render the tubes in a fashion that is time- and space-effective. We implemented auto-tuning of the model to the underlying graphics card through adaptive mesh-resolution-choices. We also designed and implemented our own shading programs in the OpenGL Shading Language (GLSL) to realize a sufficient but performant and configurable lighting computation. This allows us to render big models even on laptop GPUs and to cope with models that consist of 150 million triangles, which is still a challenging amount for most of today’s graphics cards.

Item Type: Conference or Workshop Item
Erschienen: 2014
Editors: Mehl, Miriam
Creators: Burger, Michael and Bischof, Christian
Title: Using Instancing to Efficiently Render Carbon Nanotubes
Language: English
Abstract:

In this paper, we present an efficient way to visualize Super Car- bon Nanotubes (SCNTs). SCNTs are complex, hierarchical structures and their models easily consist of more than 1 million atoms. Our SCNTs are modeled as graphs of uniform nodes and egdes. We show that OpenGL instancing is a very suitable technique for rendering such large graphs, because they only consist of two different types of geometry. Our visualizer software exploits this property and we demonstrate that it allows to render the tubes in a fashion that is time- and space-effective. We implemented auto-tuning of the model to the underlying graphics card through adaptive mesh-resolution-choices. We also designed and implemented our own shading programs in the OpenGL Shading Language (GLSL) to realize a sufficient but performant and configurable lighting computation. This allows us to render big models even on laptop GPUs and to cope with models that consist of 150 million triangles, which is still a challenging amount for most of today’s graphics cards.

Volume: 3
Divisions: 20 Department of Computer Science > Scientific Computing
20 Department of Computer Science
Zentrale Einrichtungen
Exzellenzinitiative
Exzellenzinitiative > Graduate Schools > Graduate School of Computational Engineering (CE)
Exzellenzinitiative > Graduate Schools
Event Title: 3rd International Workshop on Computational Engineering
Event Location: Stuttgart, Germany
Date Deposited: 26 Mar 2015 12:37
Official URL: http://ipvs.informatik.uni-stuttgart.de/SGS/ICCE2014/
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