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- //-----------------------------------------------------------------------------
- // File: Fog.cpp
- //
- // Desc: Example code showing how to do fog in D3D
- //
- // Copyright (c) 1997-2001 Microsoft Corporation. All rights reserved.
- //-----------------------------------------------------------------------------
- #define STRICT
- #include "stdafx.h"
- #include <tchar.h>
- #include <math.h>
- #include <D3DX8.h>
- #include "resource.h"
- #include "D3DApp.h"
- #include "D3DUtil.h"
- #include "DXUtil.h"
- #include "fog.h"
-
-
-
-
- //-----------------------------------------------------------------------------
- // Structures and Macros
- //-----------------------------------------------------------------------------
- inline DWORD FtoDW( FLOAT f ) { return *((DWORD*)&f); }
-
- struct FOGVERTEX
- {
- D3DXVECTOR3 p;
- D3DXVECTOR3 n;
- FLOAT tu, tv;
- };
-
- #define D3DFVF_FOGVERTEX (D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX1)
-
- #define FAR_PLANE (150.0f)
- #define NEAR_PLANE (1.0f)
-
-
-
-
- //-----------------------------------------------------------------------------
- // Application globals
- //-----------------------------------------------------------------------------
- TCHAR* g_strAppTitle = _T( "MFCFog: D3D Fog Sample Using MFC" );
- CApp g_App;
- CAppForm* g_AppFormView = NULL;
-
-
-
-
- //-----------------------------------------------------------------------------
- // The MFC macros are all listed here
- //-----------------------------------------------------------------------------
- IMPLEMENT_DYNCREATE( CAppDoc, CDocument )
- IMPLEMENT_DYNCREATE( CAppFrameWnd, CFrameWnd )
- IMPLEMENT_DYNCREATE( CAppForm, CFormView )
-
-
-
-
- BEGIN_MESSAGE_MAP( CApp, CWinApp )
- //{{AFX_MSG_MAP(CApp)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
-
-
-
-
- BEGIN_MESSAGE_MAP( CAppForm, CFormView )
- //{{AFX_MSG_MAP(CAppForm)
- ON_COMMAND( IDC_VIEWFULLSCREEN, OnToggleFullScreen )
- ON_COMMAND( IDM_CHANGEDEVICE, OnChangeDevice )
- ON_WM_HSCROLL()
- ON_BN_CLICKED( IDC_FOGCOLOR, OnFogColor )
- ON_BN_CLICKED( IDC_RANGEBASEDFOG, OnRangeBasedFog )
- ON_BN_CLICKED( IDC_VERTEXFOG, OnVertexFog )
- ON_BN_CLICKED( IDC_TABLEFOG, OnTableFog )
- ON_BN_CLICKED( IDC_LINEARFOGMODE, OnFogMode )
- ON_BN_CLICKED( IDC_LORESTERRAIN, OnTerrainResolution)
- ON_BN_CLICKED( IDM_CHANGEDEVICE, OnChangeDevice )
- ON_BN_CLICKED( IDC_EXPFOGMODE, OnFogMode )
- ON_BN_CLICKED( IDC_EXP2FOGMODE, OnFogMode )
- ON_BN_CLICKED( IDC_HIRESTERRAIN, OnTerrainResolution)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
-
-
-
-
- BEGIN_MESSAGE_MAP(CAppDoc, CDocument)
- //{{AFX_MSG_MAP(CAppDoc)
- // NOTE - the ClassWizard will add and remove mapping macros here.
- // DO NOT EDIT what you see in these blocks of generated code!
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
-
-
-
-
- BEGIN_MESSAGE_MAP(CAppFrameWnd, CFrameWnd)
- //{{AFX_MSG_MAP(CAppFrameWnd)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: InitInstance()
- // Desc: This is the main entry point for the application. The MFC window stuff
- // is initialized here. See also the main initialization routine for the
- // CAppForm class, which is called indirectly from here.
- //-----------------------------------------------------------------------------
- BOOL CApp::InitInstance()
- {
- // Asscociate the MFC app with the frame window and doc/view classes
- AddDocTemplate( new CSingleDocTemplate( IDR_MAINFRAME,
- RUNTIME_CLASS(CAppDoc),
- RUNTIME_CLASS(CAppFrameWnd),
- RUNTIME_CLASS(CAppForm) ) );
-
- // Dispatch commands specified on the command line (req'd by MFC). This
- // also initializes the the CAppDoc, CAppFrameWnd, and CAppForm classes.
- CCommandLineInfo cmdInfo;
- ParseCommandLine( cmdInfo );
- if( !ProcessShellCommand( cmdInfo ) )
- return FALSE;
-
- if( !g_AppFormView->IsReady() )
- return FALSE;
-
- g_AppFormView->GetParentFrame()->RecalcLayout();
- g_AppFormView->ResizeParentToFit( FALSE );
-
- m_pMainWnd->SetWindowText( g_strAppTitle );
- m_pMainWnd->UpdateWindow();
-
- return TRUE;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnIdle()
- // Desc: Uses idle time to render the 3D scene.
- //-----------------------------------------------------------------------------
- BOOL CApp::OnIdle( LONG )
- {
- // Do not render if the app is minimized
- if( m_pMainWnd->IsIconic() )
- return FALSE;
-
- TCHAR strStatsPrev[200];
-
- lstrcpy(strStatsPrev, g_AppFormView->PstrFrameStats());
-
- // Update and render a frame
- if( g_AppFormView->IsReady() )
- {
- g_AppFormView->CheckForLostFullscreen();
- g_AppFormView->RenderScene();
- if (lstrcmp(strStatsPrev, g_AppFormView->PstrFrameStats()) != 0)
- g_AppFormView->GetDlgItem(IDC_FPS_TEXT)->SetWindowText(g_AppFormView->PstrFrameStats());
- }
-
- // Keep requesting more idle time
- return TRUE;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: PreCreateWindow()
- // Desc: Change the window style (so it cannot maximize or be sized) before
- // the main frame window is created.
- //-----------------------------------------------------------------------------
- BOOL CAppFrameWnd::PreCreateWindow( CREATESTRUCT& cs )
- {
- cs.style = WS_OVERLAPPED|WS_CAPTION|WS_SYSMENU|WS_MINIMIZEBOX;
-
- return CFrameWnd::PreCreateWindow( cs );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm()
- // Desc: Constructor for the dialog resource form
- //-----------------------------------------------------------------------------
- CAppForm::CAppForm()
- :CFormView( IDD_FORMVIEW )
- {
- g_AppFormView = this;
- m_bHiResTerrain = FALSE;
- m_bHiResTerrainOld = FALSE;
- m_dwFogColor = 0x00b5b5ff;
- m_dwFogMode = D3DFOG_LINEAR;
- m_bCanDoTableFog = FALSE;
- m_bCanDoVertexFog = FALSE;
- m_bCanDoWFog = FALSE;
- m_bDeviceUsesWFog = FALSE;
- m_bRangeBasedFog = FALSE;
- m_bUsingTableFog = FALSE;
- m_fFogStartSlider = 0.0f;
- m_fFogEndSlider = 1.0f;
- m_fFogStartValue = 0.0f;
- m_fFogEndValue = 1.0f;
- m_fFogDensity = 0.0f;
- m_hwndRenderWindow = NULL;
- m_hwndRenderFullScreen = NULL;
- m_pFloorTexture = NULL;
- m_pTerrainVB = NULL;
- m_dwNumTerrainVertices = 0L;
- m_pColumnVB = NULL;
- m_dwNumColumnVertices = 0L;
-
- // Override some CD3DApplication defaults:
- m_bUseDepthBuffer = TRUE;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: ~CAppForm()
- // Desc: Destructor for the dialog resource form. Shuts down the app
- //-----------------------------------------------------------------------------
- CAppForm::~CAppForm()
- {
- Cleanup3DEnvironment();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnToggleFullScreen()
- // Desc: Called when user toggles the fullscreen mode
- //-----------------------------------------------------------------------------
- void CAppForm::OnToggleFullScreen()
- {
- ToggleFullscreen();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnChangeDevice()
- // Desc: Use hit the "Change Device.." button. Display the dialog for the user
- // to select a new device/mode, and call Change3DEnvironment to
- // use the new device/mode.
- //-----------------------------------------------------------------------------
- VOID CAppForm::OnChangeDevice()
- {
- UserSelectNewDevice();
-
- // Update UI, and device's fog parameters
- UpdateUIForDeviceCapabilites();
- SetFogParameters();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: AdjustWindowForChange()
- // Desc: Adjusts the window properties for windowed or fullscreen mode
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::AdjustWindowForChange()
- {
- if( m_bWindowed )
- {
- ::ShowWindow( m_hwndRenderFullScreen, SW_HIDE );
- CD3DApplication::m_hWnd = m_hwndRenderWindow;
- }
- else
- {
- if( ::IsIconic( m_hwndRenderFullScreen ) )
- ::ShowWindow( m_hwndRenderFullScreen, SW_RESTORE );
- ::ShowWindow( m_hwndRenderFullScreen, SW_SHOW );
- CD3DApplication::m_hWnd = m_hwndRenderFullScreen;
- }
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: FullScreenWndProc()
- // Desc: The WndProc funtion used when the app is in fullscreen mode. This is
- // needed simply to trap the ESC key.
- //-----------------------------------------------------------------------------
- LRESULT CALLBACK FullScreenWndProc( HWND hWnd, UINT msg, WPARAM wParam,
- LPARAM lParam )
- {
- if( msg == WM_CLOSE )
- {
- // User wants to exit, so go back to windowed mode and exit for real
- g_AppFormView->OnToggleFullScreen();
- g_App.GetMainWnd()->PostMessage( WM_CLOSE, 0, 0 );
- }
-
- else if( msg == WM_SETCURSOR )
- {
- SetCursor( NULL );
- }
-
- else if( msg == WM_KEYUP && wParam == VK_ESCAPE )
- {
- // User wants to leave fullscreen mode
- g_AppFormView->OnToggleFullScreen();
- }
- return DefWindowProc( hWnd, msg, wParam, lParam );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CheckForLostFullscreen()
- // Desc: If fullscreen and device was lost (probably due to alt-tab),
- // automatically switch to windowed mode
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::CheckForLostFullscreen()
- {
- HRESULT hr;
-
- if( m_bWindowed )
- return S_OK;
-
- if( FAILED( hr = m_pd3dDevice->TestCooperativeLevel() ) )
- ForceWindowed();
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnTerrainResolution()
- // Desc: Called when the user selects the terrain resolution
- //-----------------------------------------------------------------------------
- VOID CAppForm::OnTerrainResolution()
- {
- m_bHiResTerrain = ((CButton*)GetDlgItem(IDC_HIRESTERRAIN))->GetCheck();
-
- SetFogParameters();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnHScroll()
- // Desc: Called when the user moves any scroll bar. Check which scrollbar was
- // moved, and extract the appropiate value to a global variable.
- //-----------------------------------------------------------------------------
- void CAppForm::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
- {
- // Get the new fog parameters
- m_fFogStartSlider = ((CSliderCtrl*)GetDlgItem(IDC_FOGSTART_SLIDER))->GetPos()/100.0f;
- m_fFogEndSlider = ((CSliderCtrl*)GetDlgItem(IDC_FOGEND_SLIDER))->GetPos()/100.0f;
- m_fFogDensity = ((CSliderCtrl*)GetDlgItem(IDC_FOGDENSITY_SLIDER))->GetPos()/100.0f;
-
- if( m_fFogEndSlider < m_fFogStartSlider )
- {
- ((CSliderCtrl*)GetDlgItem(IDC_FOGEND_SLIDER))->SetPos((INT)(m_fFogStartSlider*100.0f));
- m_fFogEndSlider = m_fFogStartSlider;
- }
-
- SetFogParameters();
-
- CFormView::OnHScroll(nSBCode, nPos, pScrollBar);
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnFogColor()
- // Desc: Called when the user hits the "fog color..." button. Display a color
- // selection dialog box, and set the global fog color variable.
- //-----------------------------------------------------------------------------
- void CAppForm::OnFogColor()
- {
- CColorDialog dlg;
-
- if( IDOK == dlg.DoModal() )
- {
- m_dwFogColor = ((((DWORD)dlg.GetColor())&0x000000ff)<<16) +
- ((((DWORD)dlg.GetColor())&0x0000ff00)) +
- ((((DWORD)dlg.GetColor())&0x00ff0000)>>16);
- SetFogParameters();
- }
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnRangeBasedFog()
- // Desc: Toggle the boolean variable for whether RangeBasedFog is enabled.
- //-----------------------------------------------------------------------------
- void CAppForm::OnRangeBasedFog()
- {
- m_bRangeBasedFog = ((CButton*)GetDlgItem(IDC_RANGEBASEDFOG))->GetCheck();
-
- SetFogParameters();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnVertexFog()
- // Desc: User selected vertex fog. Upadte the global variables as appropiate.
- //-----------------------------------------------------------------------------
- void CAppForm::OnVertexFog()
- {
- // Note: We always assume range fog is available if doing vertex fog
- GetDlgItem(IDC_RANGEBASEDFOG)->EnableWindow(TRUE);
-
- GetDlgItem(IDC_LINEARFOGMODE)->EnableWindow(TRUE);
- GetDlgItem(IDC_EXPFOGMODE)->EnableWindow(FALSE);
- GetDlgItem(IDC_EXP2FOGMODE)->EnableWindow(FALSE);
- ((CButton*)GetDlgItem(IDC_LINEARFOGMODE))->SetCheck(TRUE);
- ((CButton*)GetDlgItem(IDC_EXPFOGMODE))->SetCheck(FALSE);
- ((CButton*)GetDlgItem(IDC_EXP2FOGMODE))->SetCheck(FALSE);
-
- GetDlgItem(IDC_FOGSTARTMIN_TEXT)->SetWindowText( _T("near (1.0)") );
- GetDlgItem(IDC_FOGSTARTMAX_TEXT)->SetWindowText( _T("far (150.0)") );
- GetDlgItem(IDC_FOGENDMIN_TEXT)->SetWindowText( _T("near (1.0)") );
- GetDlgItem(IDC_FOGENDMAX_TEXT)->SetWindowText( _T("far (150.0)") );
-
- m_bUsingTableFog = FALSE;
- OnFogMode();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnTableFog()
- // Desc: User selected table fog. Upadte the global variables as appropiate.
- //-----------------------------------------------------------------------------
- void CAppForm::OnTableFog()
- {
- // Note: We only assume range fog is available if doing vertex fog
- GetDlgItem(IDC_RANGEBASEDFOG)->EnableWindow(FALSE);
- ((CButton*)GetDlgItem(IDC_RANGEBASEDFOG))->SetCheck(FALSE);
-
- GetDlgItem(IDC_LINEARFOGMODE)->EnableWindow(TRUE);
- GetDlgItem(IDC_EXPFOGMODE)->EnableWindow(TRUE);
- GetDlgItem(IDC_EXP2FOGMODE)->EnableWindow(TRUE);
-
- if( m_bCanDoWFog )
- {
- GetDlgItem(IDC_FOGSTARTMIN_TEXT)->SetWindowText( _T("near (1.0)") );
- GetDlgItem(IDC_FOGSTARTMAX_TEXT)->SetWindowText( _T("far (150.0)") );
- GetDlgItem(IDC_FOGENDMIN_TEXT)->SetWindowText( _T("near (1.0)") );
- GetDlgItem(IDC_FOGENDMAX_TEXT)->SetWindowText( _T("far (150.0)") );
- }
- else
- {
- GetDlgItem(IDC_FOGSTARTMIN_TEXT)->SetWindowText( _T("near (0.0)") );
- GetDlgItem(IDC_FOGSTARTMAX_TEXT)->SetWindowText( _T("far (1.0)") );
- GetDlgItem(IDC_FOGENDMIN_TEXT)->SetWindowText( _T("near (0.0)") );
- GetDlgItem(IDC_FOGENDMAX_TEXT)->SetWindowText( _T("far (1.0)") );
- }
-
- m_bUsingTableFog = TRUE;
- OnFogMode();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnFogMode()
- // Desc: User changed the fog mode. Update the UI and global variables, as many
- // controls are mutually exclusive.
- //-----------------------------------------------------------------------------
- void CAppForm::OnFogMode()
- {
- if( ((CButton*)GetDlgItem(IDC_LINEARFOGMODE))->GetCheck() )
- {
- m_dwFogMode = D3DFOG_LINEAR;
-
- GetDlgItem(IDC_FOGSTART_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGSTARTMIN_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGSTARTMAX_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGSTART_SLIDER)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGEND_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGENDMIN_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGENDMAX_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGEND_SLIDER)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGDENSITY_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGDENSITYMIN_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGDENSITYMAX_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGDENSITY_SLIDER)->EnableWindow(FALSE);
- }
- else
- {
- GetDlgItem(IDC_FOGSTART_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGSTARTMIN_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGSTARTMAX_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGSTART_SLIDER)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGEND_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGENDMIN_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGENDMAX_TEXT)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGEND_SLIDER)->EnableWindow(FALSE);
- GetDlgItem(IDC_FOGDENSITY_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGDENSITYMIN_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGDENSITYMAX_TEXT)->EnableWindow(TRUE);
- GetDlgItem(IDC_FOGDENSITY_SLIDER)->EnableWindow(TRUE);
-
- if( ((CButton*)GetDlgItem(IDC_EXPFOGMODE))->GetCheck() )
- m_dwFogMode = D3DFOG_EXP;
- if( ((CButton*)GetDlgItem(IDC_EXP2FOGMODE))->GetCheck() )
- m_dwFogMode = D3DFOG_EXP2;
- }
-
- SetFogParameters();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: UpdateUIForDeviceCapabilites()
- // Desc: Whenever we get a new device, call this function to enable/disable the
- // appropiate UI controls to match the device's capabilities.
- //-----------------------------------------------------------------------------
- VOID CAppForm::UpdateUIForDeviceCapabilites()
- {
- // Check the capabilities of the device
- DWORD dwCaps = m_d3dCaps.RasterCaps;
- m_bCanDoTableFog = (dwCaps&D3DPRASTERCAPS_FOGTABLE) &&
- ((dwCaps&D3DPRASTERCAPS_ZFOG) || (dwCaps&D3DPRASTERCAPS_WFOG))
- ? TRUE : FALSE;
- m_bCanDoVertexFog = (dwCaps&D3DPRASTERCAPS_FOGVERTEX) ? TRUE : FALSE;
- m_bCanDoWFog = (dwCaps&D3DPRASTERCAPS_WFOG) ? TRUE : FALSE;
-
- // Update the UI checkbox states
- ((CButton*)GetDlgItem(IDC_TABLEFOG))->EnableWindow(m_bCanDoTableFog);
- ((CButton*)GetDlgItem(IDC_VERTEXFOG))->EnableWindow(m_bCanDoVertexFog);
-
- if( m_bCanDoWFog )
- GetDlgItem(IDC_USINGWFOG)->SetWindowText( _T("Device using W-fog") );
- else
- GetDlgItem(IDC_USINGWFOG)->SetWindowText( _T("Device using Z-fog") );
-
- if( m_bUsingTableFog && m_bCanDoTableFog )
- {
- ((CButton*)GetDlgItem(IDC_VERTEXFOG))->SetCheck(FALSE);
- ((CButton*)GetDlgItem(IDC_TABLEFOG))->SetCheck(TRUE);
- }
- else if( m_bCanDoVertexFog )
- {
- ((CButton*)GetDlgItem(IDC_VERTEXFOG))->SetCheck(TRUE);
- ((CButton*)GetDlgItem(IDC_TABLEFOG))->SetCheck(FALSE);
- }
- else
- {
- ((CButton*)GetDlgItem(IDC_VERTEXFOG))->SetCheck(FALSE);
- ((CButton*)GetDlgItem(IDC_TABLEFOG))->SetCheck(m_bCanDoTableFog);
- }
-
- // Set up table or vertex mode, as appropiate
- if( ((CButton*)GetDlgItem(IDC_TABLEFOG))->GetCheck() )
- OnTableFog();
- if( ((CButton*)GetDlgItem(IDC_VERTEXFOG))->GetCheck() )
- OnVertexFog();
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnInitialUpdate()
- // Desc: When the AppForm object is created, this function is called to
- // initialize it. Here we getting access ptrs to some of the controls,
- // and setting the initial state of some of them as well.
- //-----------------------------------------------------------------------------
- VOID CAppForm::OnInitialUpdate()
- {
- // Update the UI
- CFormView::OnInitialUpdate();
- ((CSliderCtrl*)GetDlgItem( IDC_FOGSTART_SLIDER ))->SetRange(0,100,TRUE);
- ((CSliderCtrl*)GetDlgItem( IDC_FOGSTART_SLIDER ))->SetPos(0);
- ((CSliderCtrl*)GetDlgItem( IDC_FOGEND_SLIDER ))->SetRange(0,100,TRUE);
- ((CSliderCtrl*)GetDlgItem( IDC_FOGEND_SLIDER ))->SetPos(100);
- ((CSliderCtrl*)GetDlgItem( IDC_FOGDENSITY_SLIDER ))->SetRange(0,100,TRUE);
- ((CSliderCtrl*)GetDlgItem( IDC_FOGDENSITY_SLIDER ))->SetPos(0);
- ((CButton*)GetDlgItem( IDC_LORESTERRAIN ))->SetCheck(TRUE);
- ((CButton*)GetDlgItem(IDC_VERTEXFOG))->SetCheck(TRUE);
-
- // Save static reference to the render window
- m_hwndRenderWindow = GetDlgItem(IDC_RENDERVIEW)->GetSafeHwnd();
-
- // Register a class for a fullscreen window
- WNDCLASS wndClass = { CS_HREDRAW | CS_VREDRAW, FullScreenWndProc, 0, 0, NULL,
- NULL, NULL, (HBRUSH)GetStockObject(WHITE_BRUSH), NULL,
- _T("Fullscreen Window") };
- RegisterClass( &wndClass );
-
- // We create the fullscreen window (not visible) at startup, so it can
- // be the focus window. The focus window can only be set at CreateDevice
- // time, not in a Reset, so ToggleFullscreen wouldn't work unless we have
- // already set up the fullscreen focus window.
- m_hwndRenderFullScreen = CreateWindow( _T("Fullscreen Window"), NULL,
- WS_POPUP, CW_USEDEFAULT,
- CW_USEDEFAULT, 100, 100,
- GetTopLevelParent()->GetSafeHwnd(), 0L, NULL, 0L );
-
- // Note that for the MFC samples, the device window and focus window
- // are not the same.
- CD3DApplication::m_hWnd = m_hwndRenderWindow;
- CD3DApplication::m_hWndFocus = m_hwndRenderFullScreen;
- CD3DApplication::Create( AfxGetInstanceHandle() );
-
- // Update UI, and device's fog parameters
- OnVertexFog();
- UpdateUIForDeviceCapabilites();
- SetFogParameters();
- }
-
-
-
-
- //----------------------------------------------------------------------------
- // Name: GenerateTerrainDisk()
- // Desc: Generates a trianglestrip for a disk
- //----------------------------------------------------------------------------
- HRESULT CAppForm::GenerateTerrainDisk( LPDIRECT3DDEVICE8 pd3dDevice, DWORD dwNumSegments,
- FLOAT fScale )
- {
- HRESULT hr;
-
- m_dwNumTerrainVertices = 2 * dwNumSegments * (dwNumSegments);
-
- // Destroy the old vertex buffer, if any
- SAFE_RELEASE( m_pTerrainVB );
-
- // Create a vertex buffer
- hr = pd3dDevice->CreateVertexBuffer( m_dwNumTerrainVertices*sizeof(FOGVERTEX),
- D3DUSAGE_WRITEONLY, D3DFVF_FOGVERTEX,
- D3DPOOL_MANAGED, &m_pTerrainVB );
- if( FAILED(hr) )
- return hr;
-
- FOGVERTEX* pVertices = NULL;
- hr = m_pTerrainVB->Lock( 0, m_dwNumTerrainVertices*sizeof(FOGVERTEX),
- (BYTE**)&pVertices, 0 );
- if( FAILED(hr) )
- return hr;
-
- // Generate a spiralized trianglestrip
- for( DWORD ring = 0; ring < dwNumSegments; ring++ )
- {
- for( DWORD seg=0; seg < dwNumSegments; seg++ )
- {
- FLOAT fTheta = (seg*2*D3DX_PI) / dwNumSegments;
- FLOAT r0 = (ring + fTheta/(2*D3DX_PI))*fScale/dwNumSegments;
- FLOAT r1 = r0 + fScale/dwNumSegments;
-
- FLOAT x = (FLOAT)sin( fTheta );
- FLOAT z = (FLOAT)cos( fTheta );
-
- FLOAT y0 = (FLOAT)sin(r0*z*z+r0*x*x);
- FLOAT nx0 = -(FLOAT)cos(r0*z*z+r0*x*x)*r0*2*x;
- FLOAT ny0 = 1.0f;
- FLOAT nz0 = -(FLOAT)cos(r0*z*z+r0*x*x)*r0*2*z;
-
- FLOAT y1 = (FLOAT)sin(r1*z*z+r1*x*x);
- FLOAT nx1 = -(FLOAT)cos(r1*z*z+r1*x*x)*r1*2*x;
- FLOAT ny1 = 1.0f;
- FLOAT nz1 = -(FLOAT)cos(r1*z*z+r1*x*x)*r1*2*z;
-
- // Add two vertices to the strip at each step
- pVertices->p.x = r0*x;
- pVertices->p.y = y0;
- pVertices->p.z = r0*z;
- pVertices->n.x = nx0;
- pVertices->n.y = ny0;
- pVertices->n.z = nz0;
- pVertices->tu = (r0*x)/fScale;
- pVertices->tv = (r0*z)/fScale;
- pVertices++;
-
- pVertices->p.x = r1*x;
- pVertices->p.y = y1;
- pVertices->p.z = r1*z;
- pVertices->n.x = nx1;
- pVertices->n.y = ny1;
- pVertices->n.z = nz1;
- pVertices->tu = (r1*x)/fScale;
- pVertices->tv = (r1*z)/fScale;
- pVertices++;
- }
- }
-
- m_pTerrainVB->Unlock();
-
- return S_OK;
- }
-
-
-
-
- //----------------------------------------------------------------------------
- // Name: GenerateColumn()
- // Desc: Generates a trianglestrip for a column
- //----------------------------------------------------------------------------
- HRESULT CAppForm::GenerateColumn( LPDIRECT3DDEVICE8 pd3dDevice, DWORD dwNumSegments,
- FLOAT fRadius, FLOAT fHeight )
- {
- HRESULT hr;
-
- m_dwNumColumnVertices = 2 * (dwNumSegments+1);
-
- // Destroy the old vertex buffer, if any
- SAFE_RELEASE( m_pColumnVB );
-
- // Create a vertex buffer
- hr = pd3dDevice->CreateVertexBuffer( m_dwNumColumnVertices*sizeof(FOGVERTEX),
- D3DUSAGE_WRITEONLY, D3DFVF_FOGVERTEX,
- D3DPOOL_MANAGED, &m_pColumnVB );
- if( FAILED(hr) )
- return hr;
-
- FOGVERTEX* pVertices = NULL;
- hr = m_pColumnVB->Lock( 0, m_dwNumColumnVertices*sizeof(FOGVERTEX),
- (BYTE**)(&pVertices), 0 );
- if( FAILED(hr) )
- return hr;
-
- // Generate a trianglestrip
- for( DWORD seg=0; seg<=dwNumSegments; seg++ )
- {
- FLOAT fTheta = (2*D3DX_PI*seg)/dwNumSegments;
- FLOAT nx = (FLOAT)sin(fTheta);
- FLOAT nz = (FLOAT)cos(fTheta);
- FLOAT r = fRadius;
- FLOAT u = (1.0f*seg)/dwNumSegments;
-
- // Add two vertices to the strip at each step
- pVertices->p.x = r*nx;
- pVertices->p.y = fHeight;
- pVertices->p.z = r*nz;
- pVertices->n.x = nx;
- pVertices->n.y = 0;
- pVertices->n.z = nz;
- pVertices->tu = u;
- pVertices->tv = 1;
- pVertices++;
-
- pVertices->p.x = r*nx;
- pVertices->p.y = -1;
- pVertices->p.z = r*nz;
- pVertices->n.x = nx;
- pVertices->n.y = 0;
- pVertices->n.z = nz;
- pVertices->tu = u;
- pVertices->tv = 0;
- pVertices++;
- }
-
- m_pColumnVB->Unlock();
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::OneTimeSceneInit()
- // Desc: Called during initial app startup, this function performs all the
- // permanent initialization.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::OneTimeSceneInit()
- {
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::FrameMove()
- // Desc: Called once per frame, the call is the entry point for animating
- // the scene.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::FrameMove()
- {
- // Move the camera along an ellipse
- D3DXVECTOR3 from( 50*sinf(m_fTime/2), 5.0f, 60*cosf(m_fTime/2) );
- D3DXVECTOR3 at( 50*sinf(m_fTime/2+1.5f), 4.0f, 60*cosf(m_fTime/2+1.5f) );
- D3DXVECTOR3 up( 0.0f, 1.0f, 0.0f );
-
- D3DXMATRIX matView;
- D3DXMatrixLookAtLH( &matView, &from, &at, &up );
- m_pd3dDevice->SetTransform( D3DTS_VIEW, &matView );
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::Render()
- // Desc: Called once per frame, the call is the entry point for 3d
- // rendering. This function sets up render states, clears the
- // viewport, and renders the scene.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::Render()
- {
- // Clear the viewport
- m_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER,
- m_dwFogColor, 1.0f, 0L );
-
- m_pd3dDevice->SetRenderState( D3DRS_FOGENABLE, TRUE );
- m_pd3dDevice->SetRenderState( D3DRS_FOGCOLOR, m_dwFogColor );
-
- m_pd3dDevice->SetRenderState( D3DRS_FOGSTART, FtoDW(m_fFogStartValue) );
- m_pd3dDevice->SetRenderState( D3DRS_FOGEND, FtoDW(m_fFogEndValue) );
- m_pd3dDevice->SetRenderState( D3DRS_FOGDENSITY, FtoDW(m_fFogDensity) );
-
- if( m_bUsingTableFog )
- {
- m_pd3dDevice->SetRenderState( D3DRS_FOGVERTEXMODE, D3DFOG_NONE );
- m_pd3dDevice->SetRenderState( D3DRS_FOGTABLEMODE, m_dwFogMode );
- }
- else
- {
- m_pd3dDevice->SetRenderState( D3DRS_FOGTABLEMODE, D3DFOG_NONE );
- m_pd3dDevice->SetRenderState( D3DRS_FOGVERTEXMODE, m_dwFogMode );
- m_pd3dDevice->SetRenderState( D3DRS_RANGEFOGENABLE, m_bRangeBasedFog );
- }
-
- // Begin the scene
- if( SUCCEEDED( m_pd3dDevice->BeginScene() ) )
- {
- // Reset the world matrix
- D3DXMATRIX matWorld;
- D3DXMatrixIdentity( &matWorld );
- m_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
-
- // Draw the terrain
- m_pd3dDevice->SetVertexShader( D3DFVF_FOGVERTEX );
- m_pd3dDevice->SetStreamSource( 0, m_pTerrainVB, sizeof(FOGVERTEX) );
- m_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP,
- 0, m_dwNumTerrainVertices-2 );
-
- // Draw the columns
- for( DWORD i=0; i<20; i++ )
- {
- FLOAT tx = (i%10)*20.0f - 100.0f;
- FLOAT ty = 0.0f;
- FLOAT tz = (i<=10) ? 40.0f : -40.0f;
-
- D3DXMatrixTranslation( &matWorld, tx, ty, tz );
- m_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
-
- m_pd3dDevice->SetVertexShader( D3DFVF_FOGVERTEX );
- m_pd3dDevice->SetStreamSource( 0, m_pColumnVB, sizeof(FOGVERTEX) );
- m_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP,
- 0, m_dwNumColumnVertices-2 );
- }
-
- // End the scene.
- m_pd3dDevice->EndScene();
- }
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::InitDeviceObjects()
- // Desc: Initialize scene objects.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::InitDeviceObjects()
- {
- // Get the device caps
- D3DCAPS8 d3dCaps;
- m_pd3dDevice->GetDeviceCaps( &d3dCaps );
-
- if( d3dCaps.RasterCaps & D3DPRASTERCAPS_WFOG )
- m_bDeviceUsesWFog = TRUE;
- else
- m_bDeviceUsesWFog = FALSE;
-
- // Create the floor texture
- if( FAILED( D3DUtil_CreateTexture( m_pd3dDevice, _T("SeaFloor.bmp"),
- &m_pFloorTexture, D3DFMT_R5G6B5 ) ) )
- return E_FAIL;
-
- // Generate some geometry for the app
- if( m_bHiResTerrain )
- GenerateTerrainDisk( m_pd3dDevice, 80, 100.0f );
- else
- GenerateTerrainDisk( m_pd3dDevice, 5, 100.0f );
- GenerateColumn( m_pd3dDevice, 30, 1.0f, 10.0f );
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::RestoreDeviceObjects()
- // Desc: Initialize scene objects.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::RestoreDeviceObjects()
- {
- // Set up the object material
- D3DMATERIAL8 mtrl;
- D3DUtil_InitMaterial( mtrl, 1.0f, 1.0f, 1.0f );
- m_pd3dDevice->SetMaterial( &mtrl );
- m_pd3dDevice->SetRenderState( D3DRS_AMBIENT, 0x44444444 );
-
- // Set up a texture
- m_pd3dDevice->SetTexture( 0, m_pFloorTexture );
- m_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
- m_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
- m_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
- m_pd3dDevice->SetTextureStageState( 0, D3DTSS_MINFILTER, D3DTEXF_LINEAR );
- m_pd3dDevice->SetTextureStageState( 0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR );
-
- m_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
-
- // Set the transform matrices
- D3DXMATRIX matWorld, matProj;
- D3DXMatrixIdentity( &matWorld );
- D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4.0f, 1.0f, NEAR_PLANE, FAR_PLANE );
- m_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
- m_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
-
- // Set up the light
- D3DLIGHT8 light;
- D3DUtil_InitLight( light, D3DLIGHT_POINT, 0.0f, 50.0f, 0.0f );
- light.Attenuation0 = 0.1f;
- light.Range = 200.0f;
- m_pd3dDevice->SetLight( 0, &light );
- m_pd3dDevice->LightEnable( 0, TRUE );
- m_pd3dDevice->SetRenderState( D3DRS_LIGHTING, TRUE );
-
- m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE );
- m_pd3dDevice->SetRenderState( D3DRS_DITHERENABLE, TRUE );
- m_pd3dDevice->SetRenderState( D3DRS_SPECULARENABLE, FALSE );
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::InvalidateDeviceObjects()
- // Desc: Called when the device-dependent objects are about to be lost.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::InvalidateDeviceObjects()
- {
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::DeleteDeviceObjects()
- // Desc: Called when the app is exiting, or the device is being changed,
- // this function deletes any device dependent objects.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::DeleteDeviceObjects()
- {
- SAFE_RELEASE( m_pColumnVB );
- SAFE_RELEASE( m_pTerrainVB );
- SAFE_RELEASE( m_pFloorTexture );
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::FinalCleanup()
- // Desc: Called before the app exits, this function gives the app the chance
- // to cleanup after itself.
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::FinalCleanup()
- {
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: CAppForm::ConfirmDevice()
- // Desc: Called during device intialization, this code checks the device
- // for some minimum set of capabilities
- //-----------------------------------------------------------------------------
- HRESULT CAppForm::ConfirmDevice( D3DCAPS8* pCaps, DWORD dwBehavior,
- D3DFORMAT Format )
- {
- if( pCaps->RasterCaps & D3DPRASTERCAPS_FOGVERTEX )
- return S_OK;
-
- return E_FAIL;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: SetFogParameters()
- // Desc: Sets the apps parameters for rendering the scene
- //-----------------------------------------------------------------------------
- VOID CAppForm::SetFogParameters()
- {
- m_fFogStartValue = ( m_fFogStartSlider*(FAR_PLANE-NEAR_PLANE) ) + NEAR_PLANE;
- m_fFogEndValue = ( m_fFogEndSlider*(FAR_PLANE-NEAR_PLANE) ) + NEAR_PLANE;
-
- // Set fog start and end values for table (pixel) fog mode on devices that
- // do not use WFOG. These devices expect fog between 0.0 and 1.0.
- if( (FALSE==m_bDeviceUsesWFog) && (TRUE==m_bUsingTableFog) )
- {
- m_fFogStartValue = m_fFogStartSlider;
- m_fFogEndValue = m_fFogEndSlider;
- }
-
- // Adjust terrain if necessary
- if( m_bHiResTerrainOld != m_bHiResTerrain )
- {
- m_bHiResTerrainOld = m_bHiResTerrain;
-
- if( m_bHiResTerrain )
- GenerateTerrainDisk( m_pd3dDevice, 80, 100.0f );
- else
- GenerateTerrainDisk( m_pd3dDevice, 5, 100.0f );
- }
- }
-