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  1. Proceedings of the Fourth ACM SIGGRAPH / Eurographics conference on High-Performance Graphics (EGGH-HPG'12)
  2. Scalable ambient obscurance
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Design and novel uses of higher-dimensional rasterization
Maximizing parallelism in the construction of BVHs, octrees, and k-d trees
Algorithm and VLSI architecture for real-time 1080p60 video retargeting
Reducing aliasing artifacts through resampling
Adaptive scalable texture compression
Adaptive image space shading for motion and defocus blur
kANN on the GPU with shifted sorting
Power efficiency for software algorithms running on graphics processors
Clustered deferred and forward shading
Parallel patch-based texture synthesis
High-quality parallel depth-of-field using line samples
SRDH: specializing BVH construction and traversal order using representative shadow ray sets
Scalable ambient obscurance
Representing appearance and pre-filtering subpixel data in sparse voxel octrees

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Scalable ambient obscurance

Content Provider ACM Digital Library
Author Mara, Michael Luebke, David McGuire, Morgan
Abstract This paper presents a set of architecture-aware performance and integration improvements for a recent screenspace ambient obscurance algorithm. These improvements collectively produce a 7 x 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.
Starting Page 97
Ending Page 103
Page Count 7
File Format PDF
ISBN 9783905674415
ISSN 20798679
DOI 10.2312/EGGH/HPG12/097-103
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2012-06-25
Publisher Place Goslar
Access Restriction Subscribed
Content Type Text
Resource Type Article
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