求助：用D3DFVF_XYZ设置灵活顶点格式，渲染不了~~

DISH

代码差不多跟<精通DirectX 3D图形与动画设计>第四章差不多，关键代码大致如下：

//-----------------初始化----------------------------------
m_pD3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
m_pD3DDevice->SetRenderState(D3DRS_LIGHTING,FALSE);

D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-5.0f );
D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
D3DXMATRIX matView;
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
m_pD3DDevice->SetTransform( D3DTS_VIEW, &matView );

D3DXMATRIX matProj;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/2, (float)(CLIENTHEIGHT/CLIENTWIDTH), 1.0f, 100.0f );
m_pD3DDevice->SetTransform( D3DTS_PROJECTION, &matProj );

//--------------------定义灵活顶点格式--------------------------
struct CUSTOMVERTEX
{
        D3DXVECTOR3 position;
        DWORD color;
};
#define D3DFVF_FMT D3DFVF_XYZ|D3DFVF_DIFFUSE

//-------------------创建顶点缓冲区-----------------------------
   if( FAILED( m_pD3DDevice->CreateVertexBuffer( 50*2*sizeof(CUSTOMVERTEX),
                                                 0, D3DFVF_FMT,
                                                 D3DPOOL_DEFAULT, &m_pVerBuffer, NULL ) ) )
   {
       return false;
   }

        //填充顶点缓冲区
   CUSTOMVERTEX* pVertices;
   if( FAILED( m_pVerBuffer->Lock( 0, 0, (void**)&pVertices, 0 ) ) )
       return false;
   for( DWORD i=0; i<50; i++ )
   {
       FLOAT theta = (2*D3DX_PI*i)/(50-1);
       pVertices[2*i+0].position = D3DXVECTOR3( sinf(theta),-1.0f, cosf(theta) );
           pVertices[2*i+0].color   =0xffffff00;
       pVertices[2*i+1].position = D3DXVECTOR3( sinf(theta), 1.0f, cosf(theta) );
           pVertices[2*i+1].color   =0xffffff00;
   }
   m_pVerBuffer->Unlock();

//---------------------渲染-----------------------------
D3DXMATRIX matWorld;
UINT  iTime  = GetTickCount() % 1000;
FLOAT fAngle = iTime * (2.0f * D3DX_PI) / 1000.0f;
D3DXMatrixIdentity( &matWorld );
D3DXMatrixRotationX( &matWorld, fAngle );
m_pD3DDevice->SetTransform(D3DTS_WORLD, &matWorld);

m_pD3DDevice->SetStreamSource(0, m_pVerBuffer, 0, sizeof(CUSTOMVERTEX));
m_pD3DDevice->SetFVF( D3DFVF_FMT );       
m_pD3DDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, 0, 2*50-2 );


我用D3DFVF_XYZRHW格式画基本图元时都能正常显示，所以我想D3D框架什么的应该没写错，感觉应该是坐标变换、矩阵设置什么的有问题，代码基本上都是从例子程序中拷过来的，实在看不出哪错了，在线求高手解答~~ [em7]

DISH

自己解决了，D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/2, (float)(CLIENTHEIGHT/CLIENTWIDTH), 1.0f, 100.0f );
这句里面(float)(CLIENTHEIGHT/CLIENTWIDTH) 应该改成 ((float)CLIENTHEIGHT/(float)CLIENTWIDTH)

太杯具了~~~