D3DXCreateMeshFVF

首先创建一个ID3DXMesh接口。 ID3DXMesh接口的说明可以参数龙书。

这里主要是用代码来讲解：

#define VERTEX_FVF   (D3DFVF_XYZ | D3DFVF_TEX1)

	hr = D3DXCreateMeshFVF(

		12,

		24,

		D3DXMESH_MANAGED,

		VERTEX_FVF,

		m_pd3dDevice,

		&pMesh

		);

VERTEX vertices[] =

	{

		//正y面?

		{-5.0f, -5.0f, 0.0f, 0,1},

		{-5.0f, 5.0f, 0.0f, 0,0},

		{5.0f, 5.0f, 0.0f,1,0},

		{5.0f, -5.0f, 0.0f, 1,1},

		//侧¨¤面?r

		{5.0f, -5.0f, 0.0f, 0,1},

		{5.0f, 5.0f, 0.0f,0,0},

		{5.0f, 5.0f, 10.0f,1,0},

		{5.0f, -5.0f, 10.0f, 1,1},

		//后¨®面?

		{5.0f, -5.0f, 10.0f, 0,1},

		{5.0f, 5.0f, 10.0f,0,0},

		{-5.0f, 5.0f, 10.0f, 1,0},

		{-5.0f, -5.0f, 10.0f, 1,1}, 

		{-5.0f, -5.0f, 10.0f, 0,1},

		{-5.0f, 5.0f, 10.0f, 0,0},

		{-5.0f, 5.0f, 0.0f, 1,0},

		{-5.0f, -5.0f, 0.0f, 1,1},

		{-5.0f, 5.0f, 0.0f, 0,1},

		{-5.0f, 5.0f, 10.0f, 0,0},

		{5.0f, 5.0f, 10.0f, 1,0},

		{5.0f, 5.0f, 0.0f, 1,1},

	/*	{-5.0f, -5.0f, 0.0f, 0,1},

		{-5.0f, -5.0f, 10.0f, 0,0},

		{5.0f, -5.0f, 10.0f, 1,0},

		{5.0f, -5.0f, 0.0f, 1,1}*/

		{-5.0f, -5.0f, 0.0f, 0,1},

		{5.0f, -5.0f, 0.0f, 0,0},

		{5.0f, -5.0f, 10.0f, 1,0},

		{-5.0f, -5.0f, 10.0f, 1,1},  //底下的面。需要用逆时针。不然会被剔除

	};

把上面的顶点数据拷贝到 网格里面

	void* pBuffer;

	pMesh->LockVertexBuffer(0,(void**)&pBuffer);

	memcpy(pBuffer,vertices,sizeof(vertices));

	pMesh->UnlockVertexBuffer();

接着创建 索引数据

	WORD* i = 0;

	pMesh->LockIndexBuffer(0, (void**)&i);   

	// fill in the front face index data

	i[0] = 0; i[1] = 1; i[2] = 2;

	i[3] = 0; i[4] = 2; i[5] = 3;   

	// fill in the back face index data

	i[6] = 4; i[7]  = 5; i[8]  = 6;

	i[9] = 4; i[10] = 6; i[11] = 7;   

	// fill in the top face index data

	i[12] = 8; i[13] =  9; i[14] = 10;

	i[15] = 8; i[16] = 10; i[17] = 11;   

	// fill in the bottom face index data

	i[18] = 12; i[19] = 13; i[20] = 14;

	i[21] = 12; i[22] = 14; i[23] = 15;   

	// fill in the left face index data

	i[24] = 16; i[25] = 17; i[26] = 18;

	i[27] = 16; i[28] = 18; i[29] = 19;   

	// fill in the right face index data

	i[30] = 20; i[31] = 21; i[32] = 22;

	i[33] = 20; i[34] = 22; i[35] = 23;   

	pMesh->UnlockIndexBuffer();   

//下面是创建了6个集合，创建多少个接口。后面就需要绘制几个集合

DWORD* attributeEuffer = 0;

	pMesh->LockAttributeBuffer(0,&attributeEuffer);

	for ( int a = 0; a < 2; a++)

	{

		attributeEuffer[a] = 0;

	}

	for ( int b = 2; b < 4; b++)

	{

		attributeEuffer[b] = 1;

	}

	for ( int c = 4; c < 6; c++)

	{

		attributeEuffer[c] = 2;

	}

//优化

	hr = pMesh->OptimizeInplace(

		D3DXMESHOPT_ATTRSORT |

		D3DXMESHOPT_COMPACT  |

		D3DXMESHOPT_VERTEXCACHE,

		&adjacencyBuffer[0],

		0, 0, 0);   

	for ( int c = 6; c < 8; c++)

	{

		attributeEuffer[c] = 3;

	}

	for ( int c = 8; c < 10; c++)

	{

		attributeEuffer[c] = 4;

	}

	for ( int c = 10; c < 12; c++)

	{

		attributeEuffer[c] = 5;

	}

	pMesh->UnlockAttributeBuffer();

	std::vector<DWORD> adjacencyBuffer(pMesh->GetNumFaces() * 3);

	pMesh->GenerateAdjacency(0.0f, &adjacencyBuffer[0]);   

for(int i = 0; i < 6; i++)

	{

		pMesh->DrawSubset( i );

	}