Coherent Out-of-Core Point-Based Global Illumination
| dc.contributor.author | Kontkanen, Janne | en_US |
| dc.contributor.author | Tabellion, Eric | en_US |
| dc.contributor.author | Overbeck, Ryan S. | en_US |
| dc.contributor.editor | Ravi Ramamoorthi and Erik Reinhard | en_US |
| dc.date.accessioned | 2015-02-27T14:46:04Z | |
| dc.date.available | 2015-02-27T14:46:04Z | |
| dc.date.issued | 2011 | en_US |
| dc.description.abstract | We describe a new technique for coherent out-of-core point-based global illumination and ambient occlusion. Point-based global illumination (PBGI) is used in production to render tremendously complex scenes, so in-core storage of point and octree data structures quickly becomes a problem. However, a simple out-of-core extension of a classical top-down octree building algorithm would be extremely inefficient due to large amount of I/O required. Our method extends previous PBGI algorithms with an out-of-core technique that uses minimal I/O and stores data on disk compactly and in coherent chunks for later access during shading. Using properties of a space-filling Z-curve, we are able to preprocess the data in two passes: an external 1D-sort and an octree construction pass. | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.identifier.doi | 10.1111/j.1467-8659.2011.01995.x | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/j.1467-8659.2011.01995.x | en_US |
| dc.publisher | The Eurographics Association and Blackwell Publishing Ltd. | en_US |
| dc.title | Coherent Out-of-Core Point-Based Global Illumination | en_US |