bool UpdateVertexBuffer(LPDIRECT3DVERTEXBUFFER9 VertexBuffer, VOID* VertexData, UINT Size)
{
      VOID* Address;
      CHECK_HR(VertexBuffer->Lock(0, Size, (void**)&Address, 0),"Failed to lock a vertex buffer!");

      memcpy(Address, VertexData, Size);
      CHECK_HR(VertexBuffer->Unlock(),"Failed to unlock a vertex buffer!");

      return false;

      done:
      ShowError(Error);
      return true;
}