CHC+RT: Coherent Hierarchical Culling for Ray Tracing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F15%3A00231364" target="_blank" >RIV/68407700:21230/15:00231364 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1111/cgf.12582" target="_blank" >http://dx.doi.org/10.1111/cgf.12582</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/cgf.12582" target="_blank" >10.1111/cgf.12582</a>

Result language
angličtina
Original language name
CHC+RT: Coherent Hierarchical Culling for Ray Tracing
Original language description
We propose a new technique for in-core and out-of-core GPU ray tracing using a generalization of hierarchical occlusion culling in the style of the CHC++ method. Our method exploits the rasterization pipeline and hardware occlusion queries in order to create coherent batches of work for localized shader-based ray tracing kernels. By combining hierarchies in both ray space and object space, the method is able to share intermediate traversal results among multiple rays. We exploit temporal coherence amongsimilar ray sets between frames and also within the given frame. A suitable management of the current visibility state makes it possible to benefit from occlusion culling for less coherent ray types like diffuse reflections. Since large scenes are stilla challenge for modern GPU ray tracers, our method is most useful for scenes with medium to high complexity, especially since our method inherently supports ray tracing highly complex scenes that do not fit in GPU memory. For in-core sce
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
IN - Informatics
OECD FORD branch
—

Project
<a href="/en/project/GAP202%2F12%2F2413" target="_blank" >GAP202/12/2413: Optimal Algorithms for Image Synthesis</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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