Mesh:getIndexBuffer
EditReturns the Buffer
object that holds the data for the vertex indices in the Mesh.
This can be nil
if the Mesh doesn't have any indices.
If a Mesh uses the cpu
storage mode, the index buffer is internal to the Mesh
and this function will return nil
. This ensures that the CPU data for the Mesh does not get out of sync with the GPU data in the Buffer.
buffer = Mesh:getIndexBuffer()