2D Tiling in D3D: Incorrect dynamic buffer usage

///////////////////VERTEX_SQUARE///////////////////class VERTEX_SQUARE{public:	//Vertex height data	float v0,v1,v2,v3,v4,v5;	//Vertice vectors	//Vertex 0	D3DXVECTOR3 vec0;	D3DXVECTOR3 vec1;	D3DXVECTOR3 vec2;	D3DXVECTOR3 vec3;	D3DXVECTOR3 vec4;	D3DXVECTOR3 vec5;	//Normal faces	D3DXVECTOR3 triangle0;	D3DXVECTOR3 triangle1;	//Vertex normal values stored in vector	D3DVECTOR normals0;	D3DVECTOR normals1;	D3DVECTOR normals2;	D3DVECTOR normals3;	D3DVECTOR normals4;	D3DVECTOR normals5;	//Surrounding square normals	D3DXVECTOR3 nw,n,ne;	D3DXVECTOR3 w,e;	D3DXVECTOR3 sw,s,se;};///////////////////VERTEX_SQUARE/////////////////////////////////////////Init_vb_main_map//////////////////////int RENDER_CLASS::Init_vb_main_map(){	//Setup D3D_VERTEX pointer	D3D_VERTEX* Vertex = NULL;	int offset_x    = 0;	int offset_y    = 0;	int x_          = -512;	int y_          =  384;	int wrld_x      = g_Dx_Obj.pos_x_axis; //Starting map position,used for height array	int wrld_y      = g_Dx_Obj.pos_y_axis; //Starting map position,used for height array		//Lock the vertex buffer	vb_main_map->Lock(0,0 * sizeof(D3D_VERTEX),(void**)&Vertex,D3DLOCK_DISCARD);	//Fill map buffer	for(int y = 0; y < 12768; y+=336)	{		for(int x = 0; x < 336; x+=6)		{			//Compute the face normals for the triangles			 //Triangle 0			 Terrain_Data.Height_Map[wrld_x][wrld_y].triangle0 =		     g_Dx_Obj.ComputeFaceNormals(Terrain_Data.Height_Map[wrld_x][wrld_y].vec0,				                         Terrain_Data.Height_Map[wrld_x][wrld_y].vec1,				                         Terrain_Data.Height_Map[wrld_x][wrld_y].vec2);			 //Triangle 1			 Terrain_Data.Height_Map[wrld_x][wrld_y].triangle1 =		     g_Dx_Obj.ComputeFaceNormals(Terrain_Data.Height_Map[wrld_x][wrld_y].vec3,				                         Terrain_Data.Height_Map[wrld_x][wrld_y].vec4,				                         Terrain_Data.Height_Map[wrld_x][wrld_y].vec5);			 //Find the average normal from surrounding squares			//Vertex  0			Terrain_Data.Height_Map[wrld_x][wrld_y].normals0 =			g_Dx_Obj.ComputeVertexNormal(3,Terrain_Data.Height_Map[wrld_x][wrld_y].w,				                           Terrain_Data.Height_Map[wrld_x][wrld_y].sw,										   Terrain_Data.Height_Map[wrld_x][wrld_y].s);			//Vertex  1			Terrain_Data.Height_Map[wrld_x][wrld_y].normals1 =			g_Dx_Obj.ComputeVertexNormal(3,Terrain_Data.Height_Map[wrld_x][wrld_y].nw,				                           Terrain_Data.Height_Map[wrld_x][wrld_y].n,										   Terrain_Data.Height_Map[wrld_x][wrld_y].w);			//Vertex  2			Terrain_Data.Height_Map[wrld_x][wrld_y].normals2 =			g_Dx_Obj.ComputeVertexNormal(3,Terrain_Data.Height_Map[wrld_x][wrld_y].n,				                           Terrain_Data.Height_Map[wrld_x][wrld_y].ne,										   Terrain_Data.Height_Map[wrld_x][wrld_y].e);			//Vertex  3			Terrain_Data.Height_Map[wrld_x][wrld_y].normals3 =			g_Dx_Obj.ComputeVertexNormal(3,Terrain_Data.Height_Map[wrld_x][wrld_y].w,				                           Terrain_Data.Height_Map[wrld_x][wrld_y].sw,										   Terrain_Data.Height_Map[wrld_x][wrld_y].s);						//Vertex  4			Terrain_Data.Height_Map[wrld_x][wrld_y].normals4 =			g_Dx_Obj.ComputeVertexNormal(3,Terrain_Data.Height_Map[wrld_x][wrld_y].n,				                           Terrain_Data.Height_Map[wrld_x][wrld_y].ne,										   Terrain_Data.Height_Map[wrld_x][wrld_y].e);						//Vertex  5			Terrain_Data.Height_Map[wrld_x][wrld_y].normals5 =			g_Dx_Obj.ComputeVertexNormal(3,Terrain_Data.Height_Map[wrld_x][wrld_y].w,				                           Terrain_Data.Height_Map[wrld_x][wrld_y].sw,										   Terrain_Data.Height_Map[wrld_x][wrld_y].s);			//Update vertex 0, triangle 0			Vertex[y+x+0].x  = (0 + offset_x + x_);			Vertex[y+x+0].y  = (-16 + offset_y + y_);			Vertex[y+x+0].z  = Terrain_Data.Height_Map[wrld_x][wrld_y].v0;			Vertex[y+x+0].nx = Terrain_Data.Height_Map[wrld_x][wrld_y].normals0.x;			Vertex[y+x+0].ny = Terrain_Data.Height_Map[wrld_x][wrld_y].normals0.y;			Vertex[y+x+0].nz = Terrain_Data.Height_Map[wrld_x][wrld_y].normals0.z;			Vertex[y+x+0].u  = 0;			Vertex[y+x+0].v  = 1;			//Put vector data in height map			Terrain_Data.Height_Map[wrld_x][wrld_y].vec0 = D3DXVECTOR3(Vertex[y+x+0].x,			                                                           Vertex[y+x+0].y,			                                                           Vertex[y+x+0].z);			//----------------------------------------------------------------			//Update vertex 1, triangle 0			Vertex[y+x+1].x  = (0 + offset_x + x_);			Vertex[y+x+1].y  = (0 + offset_y + y_);			Vertex[y+x+1].z  = Terrain_Data.Height_Map[wrld_x][wrld_y].v1;			Vertex[y+x+1].nx = Terrain_Data.Height_Map[wrld_x][wrld_y].normals1.x;			Vertex[y+x+1].ny = Terrain_Data.Height_Map[wrld_x][wrld_y].normals1.y;			Vertex[y+x+1].nz = Terrain_Data.Height_Map[wrld_x][wrld_y].normals1.z;			Vertex[y+x+1].u  = 0;			Vertex[y+x+1].v  = 0;			//Put vector data in height map			Terrain_Data.Height_Map[wrld_x][wrld_y].vec1 = D3DXVECTOR3(Vertex[y+x+1].x,			                                                           Vertex[y+x+1].y,			                                                           Vertex[y+x+1].z);			//----------------------------------------------------------------			//Update vertex 2, triangle 0			Vertex[y+x+2].x  = (16 + offset_x + x_);			Vertex[y+x+2].y  = (0 + offset_y + y_);			Vertex[y+x+2].z  = Terrain_Data.Height_Map[wrld_x][wrld_y].v2;			Vertex[y+x+2].nx = Terrain_Data.Height_Map[wrld_x][wrld_y].normals2.x;			Vertex[y+x+2].ny = Terrain_Data.Height_Map[wrld_x][wrld_y].normals2.y;			Vertex[y+x+2].nz = Terrain_Data.Height_Map[wrld_x][wrld_y].normals2.z;			Vertex[y+x+2].u  = 1;			Vertex[y+x+2].v  = 0;			//Put vector data in height map			Terrain_Data.Height_Map[wrld_x][wrld_y].vec2 = D3DXVECTOR3(Vertex[y+x+2].x,			                                                           Vertex[y+x+2].y,			                                                           Vertex[y+x+2].z);			//----------------------------------------------------------------			//Update vertex 3, triangle 1			Vertex[y+x+3].x  = (0 + offset_x + x_);			Vertex[y+x+3].y  = (-16 + offset_y + y_);			Vertex[y+x+3].z  = Terrain_Data.Height_Map[wrld_x][wrld_y].v3;			Vertex[y+x+3].nx = Terrain_Data.Height_Map[wrld_x][wrld_y].normals3.x;			Vertex[y+x+3].ny = Terrain_Data.Height_Map[wrld_x][wrld_y].normals3.y;			Vertex[y+x+3].nz = Terrain_Data.Height_Map[wrld_x][wrld_y].normals3.z;			Vertex[y+x+3].u  = 0;			Vertex[y+x+3].v  = 1;			//Put vector data in height map			Terrain_Data.Height_Map[wrld_x][wrld_y].vec3 = D3DXVECTOR3(Vertex[y+x+3].x,			                                                           Vertex[y+x+3].y,			                                                           Vertex[y+x+3].z);			//----------------------------------------------------------------			//Update vertex 4, triangle 1			Vertex[y+x+4].x  = (16 + offset_x + x_);			Vertex[y+x+4].y  = (0 + offset_y + y_);			Vertex[y+x+4].z  = Terrain_Data.Height_Map[wrld_x][wrld_y].v4;			Vertex[y+x+4].nx = Terrain_Data.Height_Map[wrld_x][wrld_y].normals4.x;			Vertex[y+x+4].ny = Terrain_Data.Height_Map[wrld_x][wrld_y].normals4.y;			Vertex[y+x+4].nz = Terrain_Data.Height_Map[wrld_x][wrld_y].normals4.z;			Vertex[y+x+4].u  = 1;			Vertex[y+x+4].v  = 0;			//Put vector data in height map			Terrain_Data.Height_Map[wrld_x][wrld_y].vec4 = D3DXVECTOR3(Vertex[y+x+4].x,			                                                           Vertex[y+x+4].y,			                                                           Vertex[y+x+4].z);			//----------------------------------------------------------------			//Update vertex 5, triangle 1			Vertex[y+x+5].x  = (16 + offset_x + x_);			Vertex[y+x+5].y  = (-16 + offset_y + y_);			Vertex[y+x+5].z  = Terrain_Data.Height_Map[wrld_x][wrld_y].v5;			Vertex[y+x+5].nx = Terrain_Data.Height_Map[wrld_x][wrld_y].normals5.x;			Vertex[y+x+5].ny = Terrain_Data.Height_Map[wrld_x][wrld_y].normals5.y;			Vertex[y+x+5].nz = Terrain_Data.Height_Map[wrld_x][wrld_y].normals5.z;			Vertex[y+x+5].u  = 1;			Vertex[y+x+5].v  = 1;			//Put vector data in height map			Terrain_Data.Height_Map[wrld_x][wrld_y].vec5 = D3DXVECTOR3(Vertex[y+x+5].x,			                                                           Vertex[y+x+5].y,			                                                           Vertex[y+x+5].z);			//----------------------------------------------------------------				//Update loop variables			offset_x += 16;			++wrld_x;		}//end x for		//Update loop variables		offset_x  = 0;		offset_y -= 16;		++wrld_y;		wrld_x = g_Dx_Obj.pos_x_axis;	}//end y for	//Unlock the vertex buffer	vb_main_map->Unlock();	return(1);}//////////////////////////End Init_vb_main_map//////////////////////////////////////////////////ComputeFaceNormals////////////////////////D3DXVECTOR3 D3D_ENGINE::ComputeFaceNormals(D3DXVECTOR3 vert_a,D3DXVECTOR3 vert_b,D3DXVECTOR3 vert_c){	//Return vector	D3DXVECTOR3 return_vector;	//Init vector	ZeroMemory(&return_vector,sizeof(return_vector));	//Find the average	D3DXVECTOR3 u = vert_b - vert_a;	D3DXVECTOR3 v = vert_c - vert_a;	//Cross multiply	D3DXVec3Cross(&return_vector,&u,&v);	D3DXVec3Normalize(&return_vector,&return_vector);    //Return the face normal	return(return_vector);}////////////////////////////End ComputeFaceNormals/////////////////////////////////////////////////////ComputeVertexNormal/////////////////////////D3DXVECTOR3 D3D_ENGINE::ComputeVertexNormal(int num,		                            D3DXVECTOR3 n0,					    D3DXVECTOR3 n1,					    D3DXVECTOR3 n2){	//The return vector	D3DXVECTOR3 averaged_vector;	//Compute based on number	switch(num)	{	//Borders 2 triangles	case(2):		{			//Average the triangle normals			averaged_vector = (n0 + n1) / 1.5;		}break;	//Borders 3 triangles	case(3):		{			//Average the triangle normals			averaged_vector = (n0 + n1 + n2) / 1.33;		}break;	default:break;	}//end switch	return(averaged_vector);}/////////////////////////////End ComputeVertexNormal/////////////////////////////////////////////////SetSurrSquares////////////////////void TERRAIN_DATA::SetSurrSquares(){	//This function sets the normals for the	//squares surrounding current	//Zero vector	D3DVECTOR zero_vector;	//Init zero_vector	ZeroMemory(&zero_vector,sizeof(zero_vector));	//Set surroundin squares for each square	for(int y = 0; y < 114; ++y)	{		for(int x = 0; x < 168; ++x)		{			//Northwest square---------------------------------------			//There is no square if			if(x == 0 || y == 0)			{			   Height_Map[x][y].nw = zero_vector;			}//end if			else			{				Height_Map[x][y].nw = Height_Map[x - 1][y - 1].triangle1;			}//end else			//-------------------------------------------------------			//North square-------------------------------------------			//There is no square if			if(y == 0)			{			   Height_Map[x][y].n = zero_vector;			}//end if			else			{				Height_Map[x][y].n = Height_Map[x][y - 1].triangle1;			}//end else			//-------------------------------------------------------			//Northeast square---------------------------------------			//There is no square if			if(y == 0 || x == 167)			{			    Height_Map[x][y].ne = zero_vector;			}//end if			else			{				Height_Map[x][y].ne = ((Height_Map[x + 1][y - 1].triangle1 + Height_Map[x + 1][y - 1].triangle0) / 1.5);			}//end else			//-------------------------------------------------------			//West square--------------------------------------------			//There is no square if			if(x == 0)			{			    Height_Map[x][y].w = zero_vector;			}//end if			else			{				Height_Map[x][y].w = Height_Map[x - 1][y].triangle1;			}//end else			//-------------------------------------------------------			//East square--------------------------------------------			//There is no square if			if(x == 167)			{			    Height_Map[x][y].e = zero_vector;			}//end if			else			{				Height_Map[x][y].e = Height_Map[x + 1][y].triangle0;			}//end else			//-------------------------------------------------------			//Southwest square---------------------------------------			//There is no square if			if(x == 0 || y == 113)			{			    Height_Map[x][y].sw = zero_vector;			}//end if			else			{				Height_Map[x][y].sw = ((Height_Map[x - 1][y + 1].triangle1 + Height_Map[x - 1][y + 1].triangle0) / 1.5);			}//end else			//-------------------------------------------------------			//South square-------------------------------------------			//There is no square if			if(y == 113)			{			    Height_Map[x][y].s = zero_vector;			}//end if			else			{				Height_Map[x][y].s = Height_Map[x][y + 1].triangle0;			}//end else			//-------------------------------------------------------			//Southeast square---------------------------------------			//There is no square if			if(x == 167 || y == 113)			{			    Height_Map[x][y].se = zero_vector;			}//end if			else			{				Height_Map[x][y].se = Height_Map[x + 1][y + 1].triangle0;			}//end else			//-------------------------------------------------------		}//end x for	}//end y for}////////////////////////End SetSurrSquares////////////////////////