Wed, 06 Jan 2010 11:02:00 GMT

DirectX中，如何获取深度��|��然后��它存储在一个txt文�g中？其实只要修改两个地方�Q?br> �W�一个地�Ҏ��Q�创建Direct3D讑֤��Ӟ��D3DPRESENT_PARAMETERS�c�d��表示变量的AutoDepthStencilFormat讄��为D3DFMT_D32F_LOCKABLE�Q�代码如下：

    D3DPRESENT_PARAMETERS d3dpp;
    d3dpp.BackBufferWidth            = width;
    d3dpp.BackBufferHeight           = height;
    d3dpp.BackBufferFormat           = D3DFMT_A8R8G8B8;
    d3dpp.BackBufferCount            = 1;
    d3dpp.MultiSampleType            = D3DMULTISAMPLE_NONE;
    d3dpp.MultiSampleQuality         = 0;
    d3dpp.SwapEffect                   = D3DSWAPEFFECT_DISCARD;
    d3dpp.hDeviceWindow              = hwnd;
    d3dpp.Windowed                     = windowed;
    d3dpp.EnableAutoDepthStencil     = true;
    d3dpp.AutoDepthStencilFormat     = D3DFMT_D32F_LOCKABLE;    // 16位��M��?/span>
    d3dpp.Flags                      = 0;
    d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
    d3dpp.PresentationInterval       = D3DPRESENT_INTERVAL_IMMEDIATE;

�W�二个地�Ҏ��Q�设�|�锁定缓存表面，�q�进行读写的代码�Q?br>

// 获取深度模板表面
            HRESULT hr = Device->GetDepthStencilSurface( &pZBuffer );
            if ( FAILED( hr ) ) {
                MessageBox( NULL, "GetDepthStencilSurface failure", 0, 0 );
            }

            // 打开文�g
            pFile = fopen( "ZBuffer.txt", "w" );
            if ( pFile == NULL ) {
                MessageBox( NULL, "shit", NULL, NULL);
            }

            // 获取表面�Ҏ�?/span>
            D3DSURFACE_DESC surfaceDesc;
            pZBuffer->GetDesc( &surfaceDesc );

            // 锁定表面
            D3DLOCKED_RECT lockRect;
            hr = pZBuffer->LockRect( &lockRect, NULL, D3DLOCK_READONLY );
            if ( FAILED( hr ) ) {
                MessageBox( NULL, "GetDepthStencilSurface", 0, 0 );
            }

            // 获取指向表面区域指针
            float* pData = (float*)lockRect.pBits;

            // ��深度信息输出到文�g�?/span>
            for (int y = 0; y < surfaceDesc.Height; ++y ) {
                for (int x = 0; x < surfaceDesc.Width; ++x ) {
                    int index = y * lockRect.Pitch / 4 + x;
                    fprintf( pFile, "%f  ", pData[index] );
                }
                fprintf( pFile,"\n");
            }

            // 解锁表面锁定
            pZBuffer->UnlockRect();

            // 释放接口和文�?/span>
            pZBuffer->Release();
            fclose( pFile );

��乌�?/a> 2010-01-06 19:02 发表评论

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