High-Quality Shadows for Streaming Terrain Rendering
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Rendering of large, detailed 3D terrains on commodity hardware has become possible through the use of raycasting, data caching and prefetching. Adding dynamic shadows as they appear during a day-night cycle remais a challenge however, because shadow rendering requires access to the entire terrain, invalidating data streaming strategies. In this work we present a novel, practicable shadow rendering approach which distinguishes between near- and precomputed far-shadows to significantly reduce data access and runtime costs. While near-shadows are raytraced using the current cache content, far-shadows are precomputed and stored in a very compact format requiring approximately 3 bit per height-map sample for an entire day-night cycle.
Description
@inproceedings{10.2312:egsh.20151014,
booktitle = {EG 2015 - Short Papers},
editor = {B. Bickel and T. Ritschel},
title = {{High-Quality Shadows for Streaming Terrain Rendering}},
author = {Chajdas, Matthäus G. and Reichl, Florian and Dick, Christian and Westermann, Rüdiger},
year = {2015},
publisher = {The Eurographics Association},
ISBN = {},
DOI = {10.2312/egsh.20151014}
}