Chapter

Transactions on Computational Science XIX

Volume 7870 of the series Lecture Notes in Computer Science pp 78-91

GPU Ray Tracing – Comparative Study on Ray-Triangle Intersection Algorithms

  • Vladimir ShumskiyAffiliated withAir Graphics, Moscow Institute of Physics and Technology

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Abstract

I present a comparative study on GPU ray tracing implemented for two different types of ray-triangle intersection algorithms used with BVH (Bounding Volume Hierarchy) spatial data structure evaluated for performance on three static scenes. I study how number of triangles placed in a BVH leaf node affects rendering performance. I propose GPU-optimized SIMD ray-triangle intersection method evaluated on GPU for path-tracing and compare it’s performance with plain Moller-Trumbore and Unit Triangle intersection methods.

Keywords

ray-triangle intersection GPU programming Direct3D Direct- Compute performance study ray tracing bounding volume hierarches