Title
Ray Tracing Structured AMR Data Using ExaBricks
Abstract
Structured Adaptive Mesh Refinement (Structured AMR) enables simulations to adapt the domain resolution to save computation and storage, and has become one of the dominant data representations used by scientific simulations; however, efficiently rendering such data remains a challenge. We present an efficient approach for volume- and iso-surface ray tracing of Structured AMR data on GPU-equipped workstations, using a combination of two different data structures. Together, these data structures allow a ray tracing based renderer to quickly determine which segments along the ray need to be integrated and at what frequency, while also providing quick access to all data values required for a smooth sample reconstruction kernel. Our method makes use of the RTX ray tracing hardware for surface rendering, ray marching, space skipping, and adaptive sampling; and allows for interactive changes to the transfer function and implicit iso-surfacing thresholds. We demonstrate that our method achieves high performance with little memory overhead, enabling interactive high quality rendering of complex AMR data sets on individual GPU workstations.
Year
DOI
Venue
2021
10.1109/TVCG.2020.3030470
IEEE Transactions on Visualization and Computer Graphics
Keywords
DocType
Volume
Adaptive mesh refinement,acceleration data structures,volume rendering,hardware ray tracing
Journal
27
Issue
ISSN
Citations 
2
1077-2626
2
PageRank 
References 
Authors
0.41
2
6
Name
Order
Citations
PageRank
Ingo Wald12144171.30
stefan zellmann275.02
Will Usher3279.39
Nate Morrical431.48
Ulrich Lang58310.01
Valerio Pascucci63241192.33