Adaptive Raymarching and Multi-Sampled Pre-integration on Graphics Hardware: Application to the Visualization of Gyrokinetic Plasmas Simulations

Jean-François El Hajjar 1 Florence Zara 2 Jean-Michel Dischler 3, 4 Virginie Grandgirard 5
1 DMI
XLIM - XLIM
3 CALVI - Scientific computation and visualization
IRMA - Institut de Recherche Mathématique Avancée, LSIIT - Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection, Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine
Abstract : The study of plasmas is a rising research topic in the field of physics. It implies the need for specific algorithms allowing physicists to easily visualize and thus correctly interpret related complex datasets. This paper describes an innovative and highly efficient volume rendering method designed for gyrokinetic simulations. Based on a Raymarching approach that benefits from the latest functionalities offered by current graphics programmable hardware, we exploit the geometrical properties of the tokamak (a physical device used to create plasmas) in order to achieve a rendering at interactive framerates. We therefore introduce a novel and general method for Raymarching volumes with an adaptive step. A good approximation of the rays' continuous integration is obtained by introducing a Multi-Sampled Pre-integrated table. A comparison with a recent gyrokinetic simulations visualization technique demonstrates the improved efficiency of our approach in terms of framerate and quality.
Type de document :
Rapport
[Research Report] RR-5974, INRIA. 2006, pp.17
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https://hal.inria.fr/inria-00090720
Contributeur : Rapport de Recherche Inria <>
Soumis le : vendredi 8 septembre 2006 - 16:28:48
Dernière modification le : jeudi 14 décembre 2017 - 09:56:54
Document(s) archivé(s) le : vendredi 25 novembre 2016 - 11:37:18

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  • HAL Id : inria-00090720, version 3

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Jean-François El Hajjar, Florence Zara, Jean-Michel Dischler, Virginie Grandgirard. Adaptive Raymarching and Multi-Sampled Pre-integration on Graphics Hardware: Application to the Visualization of Gyrokinetic Plasmas Simulations. [Research Report] RR-5974, INRIA. 2006, pp.17. 〈inria-00090720v3〉

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