Tracing Rays
نویسندگان
چکیده
منابع مشابه
Reducing the Number of Shadow Rays in Bidirectional Path Tracing
Bidirectional path tracing is a fairly new Monte Carlo algorithm for physically based rendering. Introduced as a generalisation of path tracing, the algorithm traces paths for each pixel, not only from the eye point but also from the light sources. It subsequently links the intersection points on the respective paths by means of shadow rays. Each shadow ray determines if a lighting contribution...
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متن کاملAnalysis of Cache Behavior and Performance of Different BVH Memory Layouts for Tracing Incoherent Rays
With CPUs moving towards many-core architectures and GPUs becoming more general purpose architectures, path tracing can now be well parallelized on commodity hardware. While parallelization is trivial in theory, properties of real hardware make efficient parallelization difficult, especially when tracing incoherent rays. We investigate how different bounding volume hierarchy (BVH) and node memo...
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Photorealistic image synthesis is a computationally demanding task that relies on ray tracing for the evaluation of integrals. Rendering time is dominated by tracing long paths that are very incoherent by construction. We therefore investigate the use of SIMD instructions to accelerate incoherent rays. SIMD is used in the hierarchy construction, the tree traversal and the leaf intersection. Thi...
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ژورنال
عنوان ژورنال: Optical Engineering
سال: 2009
ISSN: 0091-3286
DOI: 10.1117/1.3134047