Share on Facebook Tweet on Twitter Share on LinkedIn Share by email
Distributed rendering of interactive soft shadows

Michael Isard, Mark Shand, and Alan Heirich


Recently several distributed rendering systems have been developed which exploit a cluster of commodity computers by connecting host graphics cards over a fast network to form a compositing pipeline. This paper introduces a new algorithm which takes advantage of the programmable compositing operators in these systems to improve the performance of rendering multiple shadow-maps, for example to produce approximate soft shadows. With an nVidia GeForce4 Ti graphics card the new algorithm reduces the number of required render nodes by nearly a factor of four compared with a naive approach. We show results that yield interactive-speed rendering of 32 shadows on a 9-node Sepia2a distributed rendering cluster.


Publication typeArticle
Published inParallel Computing
PublisherAssociation for Computing Machinery, Inc.
> Publications > Distributed rendering of interactive soft shadows