VoxelCache: a cache-based memory architecture for volume graphics

Authors:
U. Kanus;G. Wetekam;J. Hirche
Affiliations:
WSI/GRIS, University of Tübingen, Germany;WSI/GRIS, University of Tübingen, Germany;WSI/GRIS, University of Tübingen, Germany
Venue:
Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware
Year:
2003

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Abstract

This paper presents a cache-based memory architecture for volume graphics. We describe the memory organization and cache logic to implement a voxel cache based on 43 voxel blocks. We show an efficient prefetching scheme that increases the cache hit ratio to more than 98% in most cases. The performance of the memory system with different types of external memory is demonstrated by a cycle accurate C++ simulation. The VoxelCache memory architecture is designed to be easily adapted to different memory technologies, because all volume graphics specific parts of the memory system are encapsulated inside the on-chip cache. The design is targeted at implementation on off-the-shelf reconfigurable hardware.