CHC++: Coherent Hierarchical Culling Revisited
نویسندگان
چکیده
منابع مشابه
CHC++: Coherent Hierarchical Culling Revisited
We present a new algorithm for efficient occlusion culling using hardware occlusion queries. The algorithm significantly improves on previous techniques by making better use of temporal and spatial coherence of visibility. This is achieved by using adaptive visibility prediction and query batching. As a result of the new optimizations the number of issued occlusion queries and the number of ren...
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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 ...
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We present a simple but powerful algorithm for optimizing the usage of hardware occlusion queries in arbitrary complex scenes. Our method minimizes the number of issued queries and reduces the delays due to the latency of query results. We reuse the results of occlusion queries from the last frame in order to initiate and schedule the queries in the next frame. This is done by processing nodes ...
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We present a sub linear algorithm for computing and culling back facing polygons that yields a signi cant performance improvement in the interactive rendering of large polygonal models The algorithm partitions a polygonal model it into hierarchical clusters based on the normals and positions of the polygons It does not explicitly compute all the back facing polygons but rather decides in expect...
متن کاملHierarchical Visibility Culling for Spline Models
We present hierarchical algorithms for visibility culling of spline models This includes back patch culling a generalization of back face culling for poly gons to splines These algorithms are extended to trimmed surfaces as well We propose di erent spa tial approximations for enclosing the normals of a spline surface and compare them for e ciency and e ectiveness on di erent graphics systems We...
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ژورنال
عنوان ژورنال: Computer Graphics Forum
سال: 2008
ISSN: 0167-7055,1467-8659
DOI: 10.1111/j.1467-8659.2008.01119.x