An empirical evaluation of a GPU radiosity solver

Guenter Wallner

doi:10.5220/0002822202250232

An empirical evaluation of a GPU radiosity solver

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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.

Original language	English
Title of host publication	GRAPP 2010 - Proceedings of the International Conference on Computer Graphics Theory and Applications
Editors	Paul Richard, José Braz, Adrian Hilton
Place of Publication	Setúbal
Publisher	SciTePress Digital Library
Pages	225-232
Number of pages	8
ISBN (Print)	978-989-674-026-9
DOIs	https://doi.org/10.5220/0002822202250232
Publication status	Published - 10 Sept 2010
Externally published	Yes
Event	5th International Conference on Computer Graphics Theory and Applications, GRAPP 2010 - Angers, France Duration: 17 May 2010 → 21 May 2010

Conference

Conference	5th International Conference on Computer Graphics Theory and Applications, GRAPP 2010
Country/Territory	France
City	Angers
Period	17/05/10 → 21/05/10

Keywords

Global illumination
GPU programming
Projections
Radiosity

Access to Document

10.5220/0002822202250232

Cite this

@inproceedings{12b66eb880544ee0867fd539ee256a18,

title = "An empirical evaluation of a GPU radiosity solver",

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.",

keywords = "Global illumination, GPU programming, Projections, Radiosity",

author = "Guenter Wallner",

year = "2010",

month = sep,

day = "10",

doi = "10.5220/0002822202250232",

language = "English",

isbn = "978-989-674-026-9",

pages = "225--232",

editor = "Paul Richard and Braz, {Jos{\'e} } and Adrian Hilton",

booktitle = "GRAPP 2010 - Proceedings of the International Conference on Computer Graphics Theory and Applications",

publisher = "SciTePress Digital Library",

note = "5th International Conference on Computer Graphics Theory and Applications, GRAPP 2010 ; Conference date: 17-05-2010 Through 21-05-2010",

}

Wallner, G 2010, An empirical evaluation of a GPU radiosity solver. in P Richard, J Braz & A Hilton (eds), GRAPP 2010 - Proceedings of the International Conference on Computer Graphics Theory and Applications. SciTePress Digital Library, Setúbal, pp. 225-232, 5th International Conference on Computer Graphics Theory and Applications, GRAPP 2010, Angers, France, 17/05/10. https://doi.org/10.5220/0002822202250232

An empirical evaluation of a GPU radiosity solver. / Wallner, Guenter.
GRAPP 2010 - Proceedings of the International Conference on Computer Graphics Theory and Applications. ed. / Paul Richard; José Braz; Adrian Hilton. Setúbal: SciTePress Digital Library, 2010. p. 225-232.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - An empirical evaluation of a GPU radiosity solver

AU - Wallner, Guenter

PY - 2010/9/10

Y1 - 2010/9/10

N2 - 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.

AB - 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.

KW - Global illumination

KW - GPU programming

KW - Projections

KW - Radiosity

UR - http://www.scopus.com/inward/record.url?scp=77956306768&partnerID=8YFLogxK

U2 - 10.5220/0002822202250232

DO - 10.5220/0002822202250232

M3 - Conference contribution

AN - SCOPUS:77956306768

SN - 978-989-674-026-9

SP - 225

EP - 232

BT - GRAPP 2010 - Proceedings of the International Conference on Computer Graphics Theory and Applications

A2 - Richard, Paul

A2 - Braz, José

A2 - Hilton, Adrian

PB - SciTePress Digital Library

CY - Setúbal

T2 - 5th International Conference on Computer Graphics Theory and Applications, GRAPP 2010

Y2 - 17 May 2010 through 21 May 2010

ER -

An empirical evaluation of a GPU radiosity solver

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this