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Ingo Wald edited this page Dec 11, 2015 · 3 revisions

OSPRay Particle-K-D Tree (PKD Tree) Module

This project is a module for the OSPRay ray tracer (http://www.ospray.org) that implements the Particle K-D Tree Technique as described in the paper I. Wald, A. Knoll, G. P. Johnson, W. Usher, V. Pascucci, M. E. Papka. “CPU Ray Tracing Large Particle Data using Particle K-D Trees,” IEEE Visweek, 2015.

This code was mostly authored by Ingo Wald and Aaron Knoll (with help by several others); this code is experimental, and is hereby release without any warranty (implied or expressed) as to correctness, performance, etcpp.

Building the PKD Tree module

To build the PKD module, you first have to have a version of OSPRay in source. Let us assume that you have already checked that out (into ~/Projects/ospray), that you already have created a cmake build directory (say, in ~/Projects/ospray/build), and that you have already properly configured and built ospray.

Now, first go to ospray's module subdirectory, and check out the pkd module into this directory:

cd ~/Projects/ospray/modules
git clone <this module>

Now, go into your ospray build directory, do a 'ccmake', enable the pkd module, and rebuild

cd ~/Projects/ospray/build
ccmake .
# enable PKD module in cmake dialog, then 'c'onfigure and 'g'enerate
make

You should now have a properly built libospray_module_pkd.so, as well as a ospPartiKD binary.

Using the PKD Module

Once built, using the PKD module consists of two steps:

  1. converting a particle model to pkd format

  2. rendering the resulting pkd file with ospray's sample qt viewer

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