Subdivision divides each triangle in the mesh into 4 new triangles, with each subdivision level increasing the number of triangles exponentially. Therefore a large mesh of, say, 1 million triangles becomes 4 million triangles when subdivided only once. When subdivided twice it becomes 16 million triangles, and when subdivided three times it becomes 64 million triangles.
Below are available settings:
|View Dependent||Subdivide only meshes visible by the camera|
|Max Subdivisions||How many times to subdivide the mesh. Polycount becomes exponentially larger with each subdivision level.|
|Curvature Threshold||Triangles will not be subdivided if their curvature is smaller than this threshold.|
|Pixel Threshold||Triangles will not be subdivided if they are smaller than this pixel threshold.|