d3dapp.cpp

virtual reality project. This algorithm for building large image to Volume rendering. Using directx

            hCursor = (HCURSOR)GetClassLongPtr( m_hWnd, GCLP_HCURSOR );
#else
            hCursor = (HCURSOR)ULongToHandle( GetClassLong( m_hWnd, GCL_HCURSOR ) );
#endif
            D3DUtil_SetDeviceCursor( m_pd3dDevice, hCursor, true );
            m_pd3dDevice->ShowCursor( true );
        }

        // Confine cursor to fullscreen window
        if( m_bClipCursorWhenFullscreen )
        {
            if (!m_bWindowed )
            {
                RECT rcWindow;
                GetWindowRect( m_hWnd, &rcWindow );
                ClipCursor( &rcWindow );
            }
            else
            {
                ClipCursor( NULL );
            }
        }

        // Initialize the app's device-dependent objects
        hr = InitDeviceObjects();
        if( FAILED(hr) )
        {
            DeleteDeviceObjects();
        }
        else
        {
            m_bDeviceObjectsInited = true;
            hr = RestoreDeviceObjects();
            if( FAILED(hr) )
            {
                InvalidateDeviceObjects();
            }
            else
            {
                m_bDeviceObjectsRestored = true;
                return S_OK;
            }
        }

        // Cleanup before we try again
        Cleanup3DEnvironment();
    }

    // If that failed, fall back to the reference rasterizer
    if( hr != D3DAPPERR_MEDIANOTFOUND && 
        hr != HRESULT_FROM_WIN32( ERROR_FILE_NOT_FOUND ) && 
        pDeviceInfo->DevType == D3DDEVTYPE_HAL )
    {
        if (FindBestWindowedMode(false, true))
        {
            m_bWindowed = true;
            AdjustWindowForChange();
            // Make sure main window isn't topmost, so error message is visible
            SetWindowPos( m_hWnd, HWND_NOTOPMOST,
                          m_rcWindowBounds.left, m_rcWindowBounds.top,
                          ( m_rcWindowBounds.right - m_rcWindowBounds.left ),
                          ( m_rcWindowBounds.bottom - m_rcWindowBounds.top ),
                          SWP_SHOWWINDOW );

            // Let the user know we are switching from HAL to the reference rasterizer
            DisplayErrorMsg( hr, MSGWARN_SWITCHEDTOREF );

            hr = Initialize3DEnvironment();
        }
    }
    return hr;
}




//-----------------------------------------------------------------------------
// Name: BuildPresentParamsFromSettings()
// Desc:
//-----------------------------------------------------------------------------
void CD3DApplication::BuildPresentParamsFromSettings()
{
    m_d3dpp.Windowed               = m_d3dSettings.IsWindowed;
    m_d3dpp.BackBufferCount        = 1;
    m_d3dpp.MultiSampleType        = m_d3dSettings.MultisampleType();
    m_d3dpp.MultiSampleQuality     = m_d3dSettings.MultisampleQuality();
    m_d3dpp.SwapEffect             = D3DSWAPEFFECT_DISCARD;
    m_d3dpp.EnableAutoDepthStencil = m_d3dEnumeration.AppUsesDepthBuffer;
    m_d3dpp.hDeviceWindow          = m_hWnd;
    if( m_d3dEnumeration.AppUsesDepthBuffer )
    {
        m_d3dpp.Flags              = D3DPRESENTFLAG_DISCARD_DEPTHSTENCIL;
        m_d3dpp.AutoDepthStencilFormat = m_d3dSettings.DepthStencilBufferFormat();
    }
    else
    {
        m_d3dpp.Flags              = 0;
    }

    if( m_bWindowed )
    {
        m_d3dpp.BackBufferWidth  = m_rcWindowClient.right - m_rcWindowClient.left;
        m_d3dpp.BackBufferHeight = m_rcWindowClient.bottom - m_rcWindowClient.top;
        m_d3dpp.BackBufferFormat = m_d3dSettings.PDeviceCombo()->BackBufferFormat;
        m_d3dpp.FullScreen_RefreshRateInHz = 0;
        m_d3dpp.PresentationInterval = m_d3dSettings.PresentInterval();
    }
    else
    {
        m_d3dpp.BackBufferWidth  = m_d3dSettings.DisplayMode().Width;
        m_d3dpp.BackBufferHeight = m_d3dSettings.DisplayMode().Height;
        m_d3dpp.BackBufferFormat = m_d3dSettings.PDeviceCombo()->BackBufferFormat;
        m_d3dpp.FullScreen_RefreshRateInHz = m_d3dSettings.Fullscreen_DisplayMode.RefreshRate;
        m_d3dpp.PresentationInterval = m_d3dSettings.PresentInterval();
    }
}




//-----------------------------------------------------------------------------
// Name: Reset3DEnvironment()
// Desc:
//-----------------------------------------------------------------------------
HRESULT CD3DApplication::Reset3DEnvironment()
{
    HRESULT hr;

    // Release all vidmem objects
    if( m_bDeviceObjectsRestored )
    {
        m_bDeviceObjectsRestored = false;
        InvalidateDeviceObjects();
    }
    // Reset the device
    if( FAILED( hr = m_pd3dDevice->Reset( &m_d3dpp ) ) )
        return hr;

    // Store render target surface desc
    LPDIRECT3DSURFACE9 pBackBuffer;
    m_pd3dDevice->GetBackBuffer( 0, 0, D3DBACKBUFFER_TYPE_MONO, &pBackBuffer );
    pBackBuffer->GetDesc( &m_d3dsdBackBuffer );
    pBackBuffer->Release();

    // Set up the fullscreen cursor
    if( m_bShowCursorWhenFullscreen && !m_bWindowed )
    {
        HCURSOR hCursor;
#ifdef _WIN64
        hCursor = (HCURSOR)GetClassLongPtr( m_hWnd, GCLP_HCURSOR );
#else
        hCursor = (HCURSOR)ULongToHandle( GetClassLong( m_hWnd, GCL_HCURSOR ) );
#endif
        D3DUtil_SetDeviceCursor( m_pd3dDevice, hCursor, true );
        m_pd3dDevice->ShowCursor( true );
    }

    // Confine cursor to fullscreen window
    if( m_bClipCursorWhenFullscreen )
    {
        if (!m_bWindowed )
        {
            RECT rcWindow;
            GetWindowRect( m_hWnd, &rcWindow );
            ClipCursor( &rcWindow );
        }
        else
        {
            ClipCursor( NULL );
        }
    }

    // Initialize the app's device-dependent objects
    hr = RestoreDeviceObjects();
    if( FAILED(hr) )
    {
        InvalidateDeviceObjects();
        return hr;
    }
    m_bDeviceObjectsRestored = true;

    // If the app is paused, trigger the rendering of the current frame
    if( false == m_bFrameMoving )
    {
        m_bSingleStep = true;
        DXUtil_Timer( TIMER_START );
        DXUtil_Timer( TIMER_STOP );
    }

    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: ToggleFullScreen()
// Desc: Called when user toggles between fullscreen mode and windowed mode
//-----------------------------------------------------------------------------
HRESULT CD3DApplication::ToggleFullscreen()
{
    HRESULT hr;
    int AdapterOrdinalOld = m_d3dSettings.AdapterOrdinal();
    D3DDEVTYPE DevTypeOld = m_d3dSettings.DevType();

    Pause( true );
    m_bIgnoreSizeChange = true;

    // Toggle the windowed state
    m_bWindowed = !m_bWindowed;
    m_d3dSettings.IsWindowed = m_bWindowed;

    // Prepare window for windowed/fullscreen change
    AdjustWindowForChange();

    // If AdapterOrdinal and DevType are the same, we can just do a Reset().
    // If they've changed, we need to do a complete device teardown/rebuild.
    if (m_d3dSettings.AdapterOrdinal() == AdapterOrdinalOld &&
        m_d3dSettings.DevType() == DevTypeOld)
    {
        // Reset the 3D device
        BuildPresentParamsFromSettings();
        hr = Reset3DEnvironment();
    }
    else
    {
        Cleanup3DEnvironment();
        hr = Initialize3DEnvironment();
    }
    if( FAILED( hr ) )
    {
        if( hr != D3DERR_OUTOFVIDEOMEMORY )
            hr = D3DAPPERR_RESETFAILED;
        m_bIgnoreSizeChange = false;
        if( !m_bWindowed )
        {
            // Restore window type to windowed mode
            m_bWindowed = !m_bWindowed;
            m_d3dSettings.IsWindowed = m_bWindowed;
            AdjustWindowForChange();
            SetWindowPos( m_hWnd, HWND_NOTOPMOST,
                        m_rcWindowBounds.left, m_rcWindowBounds.top,
                        ( m_rcWindowBounds.right - m_rcWindowBounds.left ),
                        ( m_rcWindowBounds.bottom - m_rcWindowBounds.top ),
                        SWP_SHOWWINDOW );
        }
        return DisplayErrorMsg( hr, MSGERR_APPMUSTEXIT );
    }

    m_bIgnoreSizeChange = false;

    // When moving from fullscreen to windowed mode, it is important to
    // adjust the window size after resetting the device rather than
    // beforehand to ensure that you get the window size you want.  For
    // example, when switching from 640x480 fullscreen to windowed with
    // a 1000x600 window on a 1024x768 desktop, it is impossible to set
    // the window size to 1000x600 until after the display mode has
    // changed to 1024x768, because windows cannot be larger than the
    // desktop.
    if( m_bWindowed )
    {
        SetWindowPos( m_hWnd, HWND_NOTOPMOST,
                      m_rcWindowBounds.left, m_rcWindowBounds.top,
                      ( m_rcWindowBounds.right - m_rcWindowBounds.left ),
                      ( m_rcWindowBounds.bottom - m_rcWindowBounds.top ),
                      SWP_SHOWWINDOW );
    }

    Pause( false );
    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: ForceWindowed()
// Desc: Switch to a windowed mode, even if that means picking a new device
//       and/or adapter
//-----------------------------------------------------------------------------
HRESULT CD3DApplication::ForceWindowed()
{
    HRESULT hr;

    if( m_bWindowed )
        return S_OK;

    if( !FindBestWindowedMode(false, false) )
    {
        return E_FAIL;
    }
    m_bWindowed = true;

    // Now destroy the current 3D device objects, then reinitialize

    Pause( true );

    // Release all scene objects that will be re-created for the new device
    Cleanup3DEnvironment();

    // Create the new device
    if( FAILED(hr = Initialize3DEnvironment() ) )
        return DisplayErrorMsg( hr, MSGERR_APPMUSTEXIT );

    Pause( false );
    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: AdjustWindowForChange()
// Desc: Prepare the window for a possible change between windowed mode and
//       fullscreen mode.  This function is virtual and thus can be overridden
//       to provide different behavior, such as switching to an entirely
//       different window for fullscreen mode (as in the MFC sample apps).
//-----------------------------------------------------------------------------
HRESULT CD3DApplication::AdjustWindowForChange()
{
    if( m_bWindowed )
    {
        // Set windowed-mode style
        SetWindowLong( m_hWnd, GWL_STYLE, m_dwWindowStyle );
        if( m_hMenu != NULL )
        {
            SetMenu( m_hWnd, m_hMenu );
            m_hMenu = NULL;
        }
    }
    else
    {
        // Set fullscreen-mode style
        SetWindowLong( m_hWnd, GWL_STYLE, WS_POPUP|WS_SYSMENU|WS_VISIBLE );
        if( m_hMenu == NULL )
        {
            m_hMenu = GetMenu( m_hWnd );
            SetMenu( m_hWnd, NULL );
        }
    }
    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: UserSelectNewDevice()
// Desc: Displays a dialog so the user can select a new adapter, device, or
//       display mode, and then recreates the 3D environment if needed
//-----------------------------------------------------------------------------
HRESULT CD3DApplication::UserSelectNewDevice()
{
    HRESULT hr;

    // Can't display dialogs in fullscreen mode
    if( m_bWindowed == false )
    {
        if( FAILED( ToggleFullscreen() ) )
        {
            DisplayErrorMsg( D3DAPPERR_RESETFAILED, MSGERR_APPMUSTEXIT );
            return E_FAIL;
        }
    }

    CD3DSettingsDialog settingsDialog( &m_d3dEnumeration, &m_d3dSettings);
    if( settingsDialog.ShowDialog( m_hWnd ) != IDOK )
        return S_OK;
    settingsDialog.GetFinalSettings( &m_d3dSettings );

    m_bWindowed = m_d3dSettings.IsWindowed;

    // Release all scene objects that will be re-created for the new device
    Cleanup3DEnvironment();

    // Inform the display class of the change. It will internally
    // re-create valid surfaces, a d3ddevice, etc.
    if( FAILED( hr = Initialize3DEnvironment() ) )
    {
        if( hr != D3DERR_OUTOFVIDEOMEMORY )
            hr = D3DAPPERR_RESETFAILED;
        if( !m_bWindowed )
        {
            // Restore window type to windowed mode
            m_bWindowed = !m_bWindowed;
            m_d3dSettings.IsWindowed = m_bWindowed;
            AdjustWindowForChange();
            SetWindowPos( m_hWnd, HWND_NOTOPMOST,
                        m_rcWindowBounds.left, m_rcWindowBounds.top,
                        ( m_rcWindowBounds.right - m_rcWindowBounds.left ),
                        ( m_rcWindowBounds.bottom - m_rcWindowBounds.top ),
                        SWP_SHOWWINDOW );
        }
        return DisplayErrorMsg( hr, MSGERR_APPMUSTEXIT );
    }

    // If the app is paused, trigger the rendering of the current frame
    if( false == m_bFrameMoving )
    {
        m_bSingleStep = true;
        DXUtil_Timer( TIMER_START );
        DXUtil_Timer( TIMER_STOP );
    }
    return S_OK;
}