Seams between chunk meshes when using surface nets algorithm

[fesoliveira014]

Surface nets work well for a well defined volume and/or a signed distance field, but for chunked terrain it presents "seams" between chunk meshes. This is due to the algorithm not taking into account the neighboring volumes when building a mesh for a particular chunk, thus considering the borders of that chunk as the end of the whole volume. A solution to this problem is "stich" the meshes after the meshing is done for each chunk by identifying the seams and dealing with them individually. See the article Dual Contouring: Seams & LOD for Chunked Terrain for a possible solution and an analysis of the issue.