ID3DXMesh* mesh = 0;
vector<D3DMATERIAL9> Mtrls(0);
vector<IDirect3DTexture9*> Textures(0);
DWORD numMtrl = 0;

HRESULT hr = 0;
ID3DXBuffer* adjbuffer = 0;
ID3DXBuffer* mtrlbuffer = 0;
//加载x文件（路径，附加标志，设备指针，把多边形信息存到缓存指针，把材质纹理信息存到缓存指针，基本为null，把材质数目存到变量，把结果存到网格指针）
hr = D3DXLoadMeshFromX("bigship1.x", D3DXMESH_MANAGED, g_pd3dDevice, &adjbuffer, &mtrlbuffer, 0, &numMtrl, &mesh);
if (FAILED(hr))
{
	::MessageBox(0, "D3DXLoadMeshFromX-lost", 0, 0);
	return false;
}

if (mtrlbuffer != 0 && numMtrl != 0)
{
    //读取材质和纹理数据
	D3DXMATERIAL* mtrls = (D3DXMATERIAL*)mtrlbuffer->GetBufferPointer();
	for (int i = 0; i < numMtrl; i++)
	{
		//设置环境光颜色
		mtrls[i].MatD3D.Ambient = mtrls[i].MatD3D.Diffuse;
		//获取材质
		Mtrls.push_back(mtrls[i].MatD3D);
		if (mtrls[i].pTextureFilename != 0)
		{
			IDirect3DTexture9* tex = 0;
			//创建纹理对象
			D3DXCreateTextureFromFile(g_pd3dDevice, mtrls[i].pTextureFilename, &tex);
			Textures.push_back(tex);
		}
		else
		{
			Textures.push_back(0);
		}
	}
}

mtrlbuffer->Release();
//优化原网格（优化类型，优化前的邻接数组指针，优化后的邻接数组指针，通常为null，通常为null）
hr = mesh->OptimizeInplace(
	D3DXMESHOPT_ATTRSORT |
	D3DXMESHOPT_COMPACT |
	D3DXMESHOPT_VERTEXCACHE,
	(DWORD*)adjbuffer->GetBufferPointer(), 0, 0, 0
	);
adjbuffer->Release();

if (FAILED(hr))
{
	::MessageBox(0, "OptimizeInplace-lost", 0, 0);
	return false;
}

//渲染网格的各个部分
for (int i = 0; i < numMtrl; i++)
{
	g_pd3dDevice->SetMaterial(&Mtrls[i]);
	g_pd3dDevice->SetTexture(0, Textures[i]);
	mesh->DrawSubset(i);
}