Loop subdivision surface algorithm implementation in Unity.
From left to right, original mesh, subdivided 1 time, subdivided 2times model.
Loop subdivision surface is an approximating subdivision scheme developed by Charles Loop in 1987 for triangular meshes. wikipedia
SubdivMorph demo morph vertices between original and subdivided.
var filter = GetComponent<MeshFilter>();
// Require a mesh to weld (require to remove duplicated vertices)
var welded = SubdivisionSurface.Weld(filter.mesh, float.Epsilon, filter.mesh.bounds.size.x);
var mesh = SubdivisionSurface.Subdivide(
welded, // a welded mesh
2, // subdivision count
false // a result mesh is welded or not
);
filter.sharedMesh = mesh;See demo scenes for details.
tested on Unity 2017.0.3, windows10 (GTX 1060).
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Free low poly head model by hexonian - https://sketchfab.com/models/988a1ffdb6244eaab9b293d296c6e868
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Carnegie Mellon Univ lecture slide - http://www.cs.cmu.edu/afs/cs/academic/class/15462-s14/www/lec_slides/Subdivision.pdf
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Michigan Tech Univ lecture slide - https://pages.mtu.edu/~shene/COURSES/cs3621/SLIDES/Subdivision.pdf
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Matt's Webcorner - Subdivision - https://graphics.stanford.edu/~mdfisher/subdivision.html