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Adding Custom Intersectors to the C++ Ray Tracing Template Library Visionaray

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posted on 03.01.2020 by Stefan Zellmann

Most ray tracing libraries allow the user to provide custom functionality that is executed when a potential ray surface interaction was encountered to determine if the interaction was valid or traversal should be continued. This is e.g. useful for alpha mask validation and allows the user to reuse existing ray object intersection routines rather than reimplementing them. Augmenting ray traversal with custom intersection logic requires some kind of callback mechanism that injects user code into existing library routines. With template libraries, this injection can happen statically since the user compiles the binary code herself. We present an implementation of this “custom intersector” approach and its integration into the C++ ray tracing template library Visionaray.

History

Email Address of Submitting Author

zellmann@uni-koeln.de

ORCID of Submitting Author

https://orcid.org/0000-0003-2880-9090

Submitting Author's Institution

University of Cologne

Submitting Author's Country

Germany

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