Practical Parallel Rendering of Detailed Neuron Simulations (English)

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Parallel rendering of large polygonal models with transparency is challenging due to the need for alpha-correct blending and compositing, which is costly for very large models with high depth complexity and spatial overlap. In this paper we compare the performance of raster-based rendering methods on mesh models of neurons using two applications, one of which is specifically tailored to the neuroscience application domain, the other a general purpose visualization tool with domain specific additions. The first implements both sort-first and sort-last and uses a scene graph style traversal to cull objects, and dual depth peeling for order independent transparency, whilst the other uses a simpler brute force data-parallel approach with sort last composition. The advantages and trade offs of these approaches are discussed. We present the optimized algorithms needed to achieve interactive frame rates for a non-trivial, real-world parallel rendering scenario. We show that a generic data visualization application can provide competitive performance when optimizing its rendering pipeline, with some loss of capability over an optimized domain-specific application.

Table of contents conference proceedings

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Scalable Parallel Feature Extraction and Tracking for Large Time-varying 3D Volume Data
Wang, Yang / Yu, Hongfeng / Ma, Kwan-Liu | 2013
Rendering Molecular Surfaces using Order-Independent Transparency
Kauker, Daniel / Krone, Michael / Panagiotidis, Alexandros / Reina, Guido / Ertl, Thomas | 2013
VtkSMP: Task-based Parallel Operators for VTK Filters
Ettinger, Mathias / Broquedis, F. / Gautier, T. / Ploix, S. / Raffin, Bruno | 2013
Image-parallel Ray Tracing using OpenGL Interception
Brownlee, Carson / Ize, Thiago / Hansen, Charles D. | 2013
Practical Parallel Rendering of Detailed Neuron Simulations
Hernando, Juan B. / Biddiscombe, John / Bohara, Bidur / Eilemann, Stefan / Schürmann, Felix | 2013
Scalable Seams for Gigapixel Panoramas
Philip, Sujin / Summa, Brian / Tierny, Julien / Bremer, Peer-Timo / Pascucci, Valerio | 2013
Analysis of Cache Behavior and Performance of Different BVH Memory Layouts for Tracing Incoherent Rays
Wodniok, Dominik / Schulz, Andre / Widmer, Sven / Goesele, Michael | 2013
GPU Acceleration of Particle Advection Workloads in a Parallel, Distributed Memory Setting
Camp, David / Krishnan, Hari / Pugmire, David / Garth, Christoph / Johnson, Ian / Bethel, E. Wes / Joy, Kenneth I. / Childs, Hank | 2013
In Situ Pathtube Visualization with Explorable Images
Ye, Yucong / Miller, Robert / Ma, Kwan-Liu | 2013