ParaView is a popular open-source general-purpose scientific visualization application. One of the many visualization tools
available within ParaView is the volume rendering of unstructured meshes. Volume rendering is a technique that renders
a mesh as a translucent solid, thereby allowing the user to see every point in three-dimensional space simultaneously.
Because volume rendering is computationally intensive, ParaView now employs a unique parallel rendering algorithm to
speed the processes. The parallel rendering algorithm is very flexible. It works equally well for both volumes and surfaces,
and can properly render the intersection of a volume and opaque polygonal surfaces. The parallel rendering algorithm
can also render images for tiled displays. In this paper, we explore the implementation of parallel unstructured volume
rendering in ParaView.
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