GPU Pro 4

1

VI

Bit-Trail Traversal for Stackless

LBVH on DirectCompute

Sergio Murgu´ıa, Francisco

´

Avila,

Leo Reyes, and Arturo Garc´ıa

1.1 Introduction

Rendering dynamic scenes with ray tracing is a major challenge on current hard-

ware and software implementations. Fast construction algorithms are usually

needed to rebuild acceleration structures from scratch on each frame in current

state-of-the-art implementations. However, thesealgorithmstendtohavepoor

traversal performance.

This article describes an improvement to the stackless linear bounding vol-

ume hierarchy (SLBVH) presented in [Murguia et al. 11], which is a new way

for traversing and constructing a linea ...