VertexFormat FVF_FORMAT = VertexFormat.Position | VertexFormat.Diffuse;

struct MY_VERTEX
  {
    VertexFormat FVF_FORMAT = VertexFormat.Position | VertexFormat.Diffuse;


    public float X, Y, Z;
    public int Color;

    public MY_VERTEX(float x, float y, float z, int color)
    {
      this.X = -x;
      this.Y = -y;
      this.Z = z;
      this.Color = color;
    }

VertexFormat FVF_FORMAT = VertexFormat.Position | VertexFormat.Diffuse;
VertexFormat FVF_FORMAT = VertexFormat.Diffuse | VertexFormat.Position;

#define D3DFVF_XYZ              0x002
#define D3DFVF_XYZRHW           0x004
#define D3DFVF_XYZB1            0x006
#define D3DFVF_XYZB2            0x008
#define D3DFVF_XYZB3            0x00a
#define D3DFVF_XYZB4            0x00c
#define D3DFVF_XYZB5            0x00e
#define D3DFVF_XYZW             0x4002

#define D3DFVF_NORMAL           0x010
#define D3DFVF_PSIZE            0x020
#define D3DFVF_DIFFUSE          0x040