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Unity Engine

Mesh topology data

Learn about mesh topology data, which describes the type of face that a mesh has.
Read time 1 minuteLast updated a month ago
Topology describes the type of face that a mesh has.
A mesh’s topology defines the structure of the index buffer, which in turn describes how the vertex positions combine into faces. Each type of topology uses a different number of elements in the index array to define a single face.
Unity supports the following mesh topologies:
  • Triangle
  • Quad
  • Lines
  • LineStrip
  • Points
Note
The Points topology doesn’t create faces; instead, Unity renders a single point at each position. All other mesh topologies use more than one index to create either faces or edges.
In the 
Mesh
class, you can get the topology with Mesh.GetTopology, and set it as a parameter of Mesh.SetIndices.
For more information on supported mesh topologies, see the documentation for the MeshTopology enum.
Note
You must convert any meshes that use other modelling techniques (such as NURBS or NURMS/Subdivision Surfaces modelling) into supported formats in your modelling software before you can use them in Unity.