... the valid verts if(D3DXCreateMeshFVF (count/3,count,D3DUSAGE_WRITEONLY,SIMPLEVERTEX_FVF,m_pd3dDevice,&pBoneMesh) == D3D_OK) { //create a vertex data pointer to handle transiton SimpleVertex* pVertexData; //lock the mesh vertex buffer so we can copy vertex data into it pBoneMesh->LockVertexBuffer(0, (void**)&pVertexData);...