For advanced geometry, most apps will prefer to load pre-authored

meshes from a file. Fortunately, when using meshes, D3DX does most of

the work for this, parsing a geometry file and creating vertx buffers

for us. This tutorial shows how to use a D3DXMESH

object, including loading it from a file and rendering it. One thing

D3DX does not handle for us is the materials and textures for a mesh,

so note that we have to handle those manually.