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dc.contributor.authorMcGuire, Morganen_US
dc.contributor.authorMara, Michaelen_US
dc.contributor.authorLuebke, Daviden_US
dc.contributor.editorCarsten Dachsbacher and Jacob Munkberg and Jacopo Pantaleonien_US
dc.date.accessioned2013-10-28T10:24:12Z
dc.date.available2013-10-28T10:24:12Z
dc.date.issued2012en_US
dc.identifier.isbn978-3-905674-41-5en_US
dc.identifier.issn2079-8679en_US
dc.identifier.urihttp://dx.doi.org/10.2312/EGGH/HPG12/097-103en_US
dc.description.abstractThis paper presents a set of architecture-aware performance and integration improvements for a recent screenspace ambient obscurance algorithm. These improvements collectively produce a 7x performance increase at 2560 x1600, generalize the algorithm to both forward and deferred renderers, and eliminate the radius- and scene-dependence of the previous algorithm to provide a hard real-time guarantee of fixed execution time. The optimizations build on three strategies: pre-filter the depth buffer to maximize memory hierarchy efficiency; reduce total bandwidth by carefully reconstructing positions and normals at high precision from a depth buffer; and exploit low-level intra- and inter-thread techniques for parallel, floating-point architectures.en_US
dc.publisherThe Eurographics Associationen_US
dc.titleScalable Ambient Obscuranceen_US
dc.description.seriesinformationEurographics/ ACM SIGGRAPH Symposium on High Performance Graphicsen_US


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