# Occlusion mesh
The Occlusion mesh processor is a relative to the Remeshing processor, but it generates the new geometry solely based on the silhouette of the input geometry. This means internal features and concavities will be filled. The LOD is useful for occlusion culling because the output mesh falls within the original silhouette bounds. Since it removes concavities it is not appropriate for shadow meshes that expect to self-shadow, but for pure casters it works very well. Due to the complexity of the task, this can be quite slow at higher settings.