ID3DXMesh* newMesh = 0;
DuncEngineMesh::Vertex* vertices = 0;
WORD* indices = 0;
	
DuncEngineMesh::Vertex* newVertices = 0;
WORD* newIndices = 0;
int newIndex = 0; //index of where we write new index data
int newVertex = 0; //index of where we write new vertex data

oldMesh->LockVertexBuffer(D3DLOCK_READONLY,(void**)&vertices);
oldMesh->LockIndexBuffer(D3DLOCK_READONLY,(void**)&indices);
	
D3DXCreateMesh((oldMeshNumIndices/3)*4,oldMeshNumVertices*2,D3DXMESH_DYNAMIC,generalVertexDeclarationStruct,device,&newMesh);
newMesh->LockVertexBuffer(D3DLOCK_DISCARD,(void**)&newVertices);
newMesh->LockIndexBuffer(D3DLOCK_DISCARD,(void**)&newIndices);

//for each face
for (int i = 0; i < oldMeshNumIndices/3; i++)
{
//get vertices using face data
        Vertex zero = vertices[indices[i*3]];
	Vertex one = vertices[indices[i*3+1]];
	Vertex two = vertices[indices[i*3+2]];

	//calculate vertices in between zero, one and two
	Vertex zeroA((zero._x+one._x)/2,(zero._y+one._y)/2,(zero._z+one._z)/2);
	Vertex oneA((one._x+two._x)/2,(one._y+two._y)/2,(one._z+two._z)/2);
	Vertex twoA((two._x+zero._x)/2,(two._y+zero._y)/2,(two._z+zero._z)/2);

	//allocate them into new mesh vertex data
	newVertices[newVertex] = zero;
	newVertices[newVertex+1] = zeroA;
	newVertices[newVertex+2] = one;
	newVertices[newVertex+3] = oneA;
	newVertices[newVertex+4] = two;
	newVertices[newVertex+5] = twoA;

	//build 4 new triangles from new vertices
	newIndices[newIndex] = newVertex;
	newIndices[newIndex+1] = newVertex+1;
	newIndices[newIndex+2] = newVertex+5;

	newIndices[newIndex+3] = newVertex+1;
	newIndices[newIndex+4] = newVertex+2;
	newIndices[newIndex+5] = newVertex+3;

	newIndices[newIndex+6] = newVertex+3;
	newIndices[newIndex+7] = newVertex+4;
	newIndices[newIndex+8] = newVertex+5;

	newIndices[newIndex+9] = newVertex+5;
	newIndices[newIndex+10] = newVertex;
	newIndices[newIndex+11] = newVertex+1;

	//increment where we are in generating new data
	newVertex += 6; //we add 6 vertices to our new mesh each step
	newIndex += 12; //and 4 triangles
}

newMesh->UnlockIndexBuffer();
newMesh->UnlockVertexBuffer();

oldMesh->UnlockIndexBuffer();
oldMesh->UnlockVertexBuffer();