Rendering Primitives with Direct3D
Lets face it, when we say primitives we mean triangles. Graphic cards only know how to render triangles. The steps required to create and render 3D objects made up of triangles using Direct3D are shown in the notes below:
If you have done all the above, turned your lights on and still can't see your 3D object take a look at the tips on this page: Invisible Geometry
Please don't rely solely on these notes but look in the DirectX help file for further details. The SDK sample programs also give you many examples of this process (use the DirectX sample browser). Other Internet sites that might be of use are listed on the Resources page.