Out-of-core sort-first parallel rendering for cluster-based tiled displays

Wagner T. Corrêa, James T. Klosowski, Cláudio T. Silva

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a sort-first parallel system for out-of-core rendering of large models on cluster-based tiled displays. The system is able to render high-resolution images of large models at interactive frame rates using off-the-shelf PCs with small memory. Given a model, we use an out-of-core preprocessing algorithm to build an on-disk hierarchical representation for the model. At run time, each PC renders the image for a display tile, using an out-of-core rendering approach that employs multiple threads to overlap rendering, visibility computation, and disk operations. The system can operate in approximate mode for real-time rendering, or in conservative mode for rendering with guaranteed accuracy. Running our system in approximate mode on a cluster of 16 PCs each with 512 MB of main memory, we are able to render 12-megapixel images of a 13-million-triangle model with 99.3% of accuracy at 10.8 frames per second. Rendering such a large model at high resolutions and interactive frame rates would typically require expensive high-end graphics hardware. Our results show that a cluster of inexpensive PCs is an attractive alternative to those high-end systems.

Original languageEnglish (US)
Title of host publicationEurographics Workshop on Parallel Graphics and Visualization
EditorsD. Bartz, X. Pueyo, E. Reinhard
PublisherAssociation for Computing Machinery (ACM)
Pages89-96
Number of pages8
ISBN (Print)1581135793, 9781581135794
StatePublished - 2002
EventFourth Eurographics Workshop on Parallel Graphics and Visualization - Blaubeuren, Germany
Duration: Sep 9 2002Sep 10 2002

Publication series

NameEurographics Workshop on Parallel Graphics and Visualization

Other

OtherFourth Eurographics Workshop on Parallel Graphics and Visualization
CountryGermany
CityBlaubeuren
Period9/9/029/10/02

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Corrêa, W. T., Klosowski, J. T., & Silva, C. T. (2002). Out-of-core sort-first parallel rendering for cluster-based tiled displays. In D. Bartz, X. Pueyo, & E. Reinhard (Eds.), Eurographics Workshop on Parallel Graphics and Visualization (pp. 89-96). (Eurographics Workshop on Parallel Graphics and Visualization). Association for Computing Machinery (ACM).