Planet-Sized Batched Dynamic Adaptive Meshes (P-BDAM)

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Immagine di anteprima
Data
2003-10
Autori
Cignoni, Paolo
Ganovelli, Fabio
Gobbetti, Enrico
Marton, Fabio
Ponchio, Federico
Scopigno, Roberto
Titolo del periodico
ISSN
Titolo del volume
Editore
IEEE
Abstract
This paper describes an efficient technique for out-of-core management and interactive rendering of planet sized textured terrain surfaces. The technique, called planet-sized batched dynamic adaptive meshes (P-BDAM), extends the BDAM approach by using as basic primitive a general triangulation of points on a displaced triangle. The proposed framework introduces several advances with respect to the state of the art: thanks to a batched host-to-graphics communication model, we outperform current adaptive tessellation solutions in terms of rendering speed; we guarantee overall geometric continuity, exploiting programmable graphics hardware to cope with the accuracy issues introduced by single precision floating points; we exploit a compressed out of core representation and speculative prefetching for hiding disk latency during rendering of out-of-core data; we efficiently construct high quality simplified representations with a novel distributed out of core simplification algorithm working on a standard PC network.
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Keywords
multiresolution , terrains , huge dataset
Citazione