请教 关于摄影变换的问题

visualvisual

我先是写了五个点(渲染时不进行背面剔除)
如下:
CUSTOMVERTEX2 customVertex2[]=
        {
                {100.0f,0.0f,0.0f,1.0f,D3DCOLOR_XRGB(255,0,0)},
                {200.0f,200.0f,0.0f,1.0f,D3DCOLOR_XRGB(255,0,0)},
                {300.0f,0.0f,0.0f,1.0f,D3DCOLOR_XRGB(0,0,255)},
                {300.0f,200.0f,200.0f,1.0f,D3DCOLOR_XRGB(255,0,0)},
                {400.0f,300.0f,200.0f,1.0f,D3DCOLOR_XRGB(255,0,0)}
        };

然后设置了摄影机,而且在BeginScene之前对它进行了调用
void CDirect3dObject::SetCamera()
{
        D3DXVECTOR3 eye(2.0f,1.5f,-3.0f);
        D3DXVECTOR3 at(0.0f,0.0f,0.0f);
        D3DXVECTOR3 up(0.0f,1.0f,0.0f);
        D3DXMATRIX viewMatrix;
        D3DXMatrixLookAtLH(&viewMatrix,&eye,&at,&up);
        pDrect3DDevice->SetTransform(D3DTS_VIEW,&viewMatrix);
        D3DXMATRIX projectionMatrix;
        D3DXMatrixPerspectiveFovLH(&projectionMatrix,D3DX_PI/2,800/600,1.0f,1000.0f);
        pDrect3DDevice->SetTransform(D3DTS_PROJECTION,&projectionMatrix);
}

但是奇怪的是不管我怎么改变eye at 或up的复值就是看不到三维透视的关系.
显示的结果就象用ID3DXSprite做出的精灵一样,总是正对着视口.
这是怎么回事?

ricohcanon

FVF是怎样设的？

visualvisual

谢谢
是我没弄清楚D3DFVF_XYZ和D3DFVF_XYZRHW的区别

ricohcanon

就是嘛，不客气。