AN EMPIRICAL EVALUATION OF A GPU RADIOSITY SOLVER

Guenter Wallner

2010

Abstract

This paper presents an empirical evaluation of a GPU radiosity solver which was described in the authors previous work. The implementation is evaluated in regard to rendering times in comparision with a classical CPU implementation. Results show that the GPU implementation outperforms the CPU algorithm in most cases, most importantly, in cases where the number of radiosity elements is high. Furthermore, the impact of the projection -- which is used for determining the visibility -- on the quality of the rendering is assessed. Results gained with a hemispherical projection performed in a vertex shader and with a real non-linear hemispherical projection are compared against the results of the hemicube method. Based on the results of the evaluation, possible improvements for further research are pointed out.

Paper Citation

in Harvard Style

Wallner G. (2010). AN EMPIRICAL EVALUATION OF A GPU RADIOSITY SOLVER . In Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2010) ISBN 978-989-674-026-9, pages 225-232. DOI: 10.5220/0002822202250232

in Bibtex Style

@conference{grapp10,
author={Guenter Wallner},
title={AN EMPIRICAL EVALUATION OF A GPU RADIOSITY SOLVER},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2010)},
year={2010},
pages={225-232},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002822202250232},
isbn={978-989-674-026-9},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2010)
TI - AN EMPIRICAL EVALUATION OF A GPU RADIOSITY SOLVER
SN - 978-989-674-026-9
AU - Wallner G.
PY - 2010
SP - 225
EP - 232
DO - 10.5220/0002822202250232