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//=============================================================================
// Desc: 主程序源代码
//=============================================================================
#include "dxstdafx.h"
#include 
"resource.h"


//-----------------------------------------------------------------------------
// 全局变量
//-----------------------------------------------------------------------------
ID3DXFont*                 g_pFont = NULL;          //ID3DXFont字体对象
ID3DXSprite*               g_pTextSprite = NULL;    //ID3DXSprite文本精灵对象
bool                       g_bShowHelp = true;      //标识是否显示简单说明文本

CDXUTDialogResourceManager g_DialogResourceManager; 
//对话框资源管理器
CD3DSettingsDlg            g_SettingsDlg;           //Direct3D设备设置对话框
CDXUTDialog                g_HUD;                   //对话框
CDXUTDialog                g_SampleUI;              //对话框

LPDIRECT3DVERTEXBUFFER9    g_pGroundVB;             
//地面顶点缓冲区
LPDIRECT3DVERTEXBUFFER9    g_pTreeVB;               //树木顶点缓冲区
LPDIRECT3DTEXTURE9         g_pGroundTex;            //地面纹理
LPDIRECT3DTEXTURE9         g_pTreeTex;              //树木纹理
D3DXMATRIX                 g_matGround;             //地面世界矩阵
D3DXMATRIX                 g_matTree;               //树木世界矩阵
bool                       g_bUseBillBoard = true;  //标志是否使用广告板技术

//-----------------------------------------------------------------------------
// Desc: 顶点结构
//-----------------------------------------------------------------------------
struct  CUSTOMVERTEX
{
    
float x, y, z;    //顶点位置
    float u,v ;          //顶点纹理坐标
};
#define D3DFVF_CUSTOMVERTEX   (D3DFVF_XYZ|D3DFVF_TEX1)



//-----------------------------------------------------------------------------
// 控件ID
//-----------------------------------------------------------------------------
#define IDC_TOGGLEFULLSCREEN      1
#define IDC_TOGGLEREF             2
#define IDC_CHANGEDEVICE          3
#define IDC_USEBILLBOARD          4


//-----------------------------------------------------------------------------
// Desc: 函数声明
//------------------------------------------------------------------------------
bool    CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat, D3DFORMAT BackBufferFormat, bool bWindowed, void* pUserContext );
bool    CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps, void* pUserContext );
HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9
* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc, void* pUserContext );
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9
* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc, void* pUserContext );
void    CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext );
void    CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext );
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, 
bool* pbNoFurtherProcessing, void* pUserContext );
void    CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown, void* pUserContext );
void    CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl, void* pUserContext );
void    CALLBACK OnLostDevice( void* pUserContext );
void    CALLBACK OnDestroyDevice( void* pUserContext );

void    InitApp();
void    RenderText();


//-----------------------------------------------------------------------------
// Desc: 入口函数
//-----------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
{
    
//为Debug配置启用运行时内存检查功能
#if defined(DEBUG) | defined(_DEBUG)
    _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF 
| _CRTDBG_LEAK_CHECK_DF );
#endif

    
//设置回调函数
    DXUTSetCallbackDeviceCreated( OnCreateDevice );
    DXUTSetCallbackDeviceReset( OnResetDevice );
    DXUTSetCallbackDeviceLost( OnLostDevice );
    DXUTSetCallbackDeviceDestroyed( OnDestroyDevice );
    DXUTSetCallbackMsgProc( MsgProc );
    DXUTSetCallbackKeyboard( KeyboardProc );
    DXUTSetCallbackFrameRender( OnFrameRender );
    DXUTSetCallbackFrameMove( OnFrameMove );

    
//应用程序相关的初始化
    InitApp();

    
//初始化DXUT, 创建窗口, 创建Direct3D设备对象
    DXUTInit( truetruetrue );
    DXUTSetCursorSettings( 
truetrue );
    DXUTCreateWindow( L
"BillBoard" );
    DXUTCreateDevice( D3DADAPTER_DEFAULT, 
true640480
        IsDeviceAcceptable, ModifyDeviceSettings );

    
//进入消息循环和场景渲染
    DXUTMainLoop();

    
//在此进行应用程序相关的清除工作

    
return DXUTGetExitCode();
}


//-----------------------------------------------------------------------------
// Desc: 应用程序相关初始化
//-----------------------------------------------------------------------------
void InitApp()
{
    
//初始化对话框
    g_SettingsDlg.Init( &g_DialogResourceManager );
    g_HUD.Init( 
&g_DialogResourceManager );
    g_SampleUI.Init( 
&g_DialogResourceManager );

    
//为g_HUD对话框设置消息处理函数,添加控件
    g_HUD.SetCallback( OnGUIEvent ); int iY = 10
    g_HUD.AddButton( IDC_TOGGLEFULLSCREEN, L
"Toggle full screen"35, iY, 12522 );
    g_HUD.AddButton( IDC_TOGGLEREF, L
"Toggle REF (F3)"35, iY += 2412522 );
    g_HUD.AddButton( IDC_CHANGEDEVICE, L
"Change device (F2)"35, iY += 2412522, VK_F2 );
    g_HUD.AddCheckBox(IDC_USEBILLBOARD, L
"使用BillBoard矩阵"40, iY += 3216024, g_bUseBillBoard );
}


//-----------------------------------------------------------------------------
// Desc: 设备能力检查
//-----------------------------------------------------------------------------
bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat, 
                                  D3DFORMAT BackBufferFormat, 
bool bWindowed, 
                                  
void* pUserContext )
{
    
//检查后台缓冲区格式是否支持Alpha混合等操作(post pixel blending operations)
    IDirect3D9* pD3D = DXUTGetD3DObject(); 
    
if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType,
                    AdapterFormat, D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, 
                    D3DRTYPE_TEXTURE, BackBufferFormat ) ) )
        
return false;

    
return true;
}


//-----------------------------------------------------------------------------
// Desc: 修改Direct3D渲染设备设置
//-----------------------------------------------------------------------------
bool CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, 
                                    
const D3DCAPS9* pCaps, void* pUserContext )
{
    
//如果不支持硬件顶点处理则使用软件顶点处理
    if( (pCaps->DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) == 0)
    {
        pDeviceSettings
->BehaviorFlags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
    }

    
//如果使用参考设备,则弹出警告对话框
    static bool s_bFirstTime = true;
    
if( s_bFirstTime )
    {
        s_bFirstTime 
= false;
        
if( pDeviceSettings->DeviceType == D3DDEVTYPE_REF )
            DXUTDisplaySwitchingToREFWarning();
    }

    
return true;
}


//-----------------------------------------------------------------------------
// Desc: 在此创建管理内存资源对象
//-----------------------------------------------------------------------------
HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice, 
                                
const D3DSURFACE_DESC* pBackBufferSurfaceDesc, 
                                
void* pUserContext )
{
    HRESULT hr;

    V_RETURN( g_DialogResourceManager.OnCreateDevice( pd3dDevice ) );
    V_RETURN( g_SettingsDlg.OnCreateDevice( pd3dDevice ) );
    
    
//创建字体
    V_RETURN( D3DXCreateFont( pd3dDevice, 150, FW_BOLD, 1, FALSE, DEFAULT_CHARSET, 
                         OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH 
| FF_DONTCARE, 
                         L
"Arial"&g_pFont ) );

    
//创建地面顶点缓冲区
    V_RETURN( pd3dDevice->CreateVertexBuffer( 4*sizeof(CUSTOMVERTEX),
                                              
0, D3DFVF_CUSTOMVERTEX,
                                              D3DPOOL_MANAGED, 
&g_pGroundVB, NULL ));


    CUSTOMVERTEX vertices1[] 
=
    {
        { 
-32.0f,  0.0f-32.0f,  0.0f,  16.0f, },
        { 
-32.0f,  0.0f,  32.0f,  0.0f,   0.0f, },
        {  
32.0f,  0.0f-32.0f16.0f,  16.0f, }, 
        {  
32.0f,  0.0f,  32.0f16.0f,   0.0f, }
    };

    VOID
* pVertices1;
    
if( FAILED( g_pGroundVB->Lock( 0sizeof(vertices1), (void**)&pVertices1, 0 ) ) )
        
return E_FAIL;
    memcpy( pVertices1, vertices1, 
sizeof(vertices1) );
    g_pGroundVB
->Unlock();

    
//创建树木顶点缓冲区
   V_RETURN( pd3dDevice->CreateVertexBuffer( 4*sizeof(CUSTOMVERTEX),
                                             
0, D3DFVF_CUSTOMVERTEX,
                                             D3DPOOL_MANAGED, 
&g_pTreeVB, NULL ));
    CUSTOMVERTEX vertices2[] 
=
    {
        { 
-1.0f0.0f0.0f,  0.0f1.0f, },
        { 
-1.0f2.5f0.0f,  0.0f0.0f, }, 
        {  
1.0f0.0f0.0f,  1.0f1.0f, }, 
        {  
1.0f2.5f0.0f,  1.0f0.0f, }
    };

    VOID
* pVertices2;
    
if( FAILED( g_pTreeVB->Lock( 0sizeof(vertices2), (void**)&pVertices2, 0 ) ) )
        
return E_FAIL;
    memcpy( pVertices2, vertices2, 
sizeof(vertices2) );
    g_pTreeVB
->Unlock();

    
//创建地面纹理和树木纹理
    V_RETURN( D3DXCreateTextureFromFile( pd3dDevice, L"ground.jpg"&g_pGroundTex ));
    V_RETURN( D3DXCreateTextureFromFile( pd3dDevice, L
"tree.dds"&g_pTreeTex ));

    
return S_OK;
}


//-----------------------------------------------------------------------------
// Desc: 在此创建默认内存类型资源对象
//-----------------------------------------------------------------------------
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice, 
                                
const D3DSURFACE_DESC* pBackBufferSurfaceDesc, 
                                
void* pUserContext )
{
    HRESULT hr;

    V_RETURN( g_DialogResourceManager.OnResetDevice() );
    V_RETURN( g_SettingsDlg.OnResetDevice() );

    
//设置对话框位置和尺寸
    g_HUD.SetLocation( pBackBufferSurfaceDesc->Width-1700 );
    g_HUD.SetSize( 
170170 );
    g_SampleUI.SetLocation( pBackBufferSurfaceDesc
->Width-170
                            pBackBufferSurfaceDesc
->Height-350 );
    g_SampleUI.SetSize( 
170300 );

    
//恢复字体
    if( g_pFont )
        V_RETURN( g_pFont
->OnResetDevice() );
   
    
//创建ID3DXSprite接口对象
    V_RETURN( D3DXCreateSprite( pd3dDevice, &g_pTextSprite ) );

    
//初始化地面世界矩阵
    D3DXMatrixIdentity(&g_matGround);

    
//初始化树木世界矩阵
    D3DXMatrixIdentity(&g_matTree);

    
//设置投影矩阵
    D3DXMATRIXA16 matProj;
    
float fAspectRatio = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
    D3DXMatrixPerspectiveFovLH( 
&matProj, D3DX_PI/4, fAspectRatio, 1.0f100.0f );
    pd3dDevice
->SetTransform( D3DTS_PROJECTION, &matProj );

    
//设置纹理状态
    pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP,   D3DTOP_SELECTARG1);
    pd3dDevice
->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
    pd3dDevice
->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR );
    pd3dDevice
->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR );

    
//Alpha混合设置, 设置混合系数
    pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE,   true );
    pd3dDevice
->SetRenderState( D3DRS_SRCBLEND,  D3DBLEND_SRCALPHA );
    pd3dDevice
->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );

    
//禁用照明效果
    pd3dDevice->SetRenderState( D3DRS_LIGHTING, false );

    
return S_OK;
}


//-----------------------------------------------------------------------------
// Desc: 更新场景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, 
                           
float fElapsedTime, void* pUserContext )
{
    
//设置观察矩阵
    static D3DXMATRIXA16 matView;
    
float angle = (float)fTime/2.0f;
    D3DXVECTOR3 vEyePt( 
8*sin(angle), 1.5f8*cos(angle) );
    D3DXVECTOR3 vLookatPt( 
0.0f0.0f0.0f );
    D3DXVECTOR3 vUpVec( 
0.0f1.0f0.0f );
    D3DXMatrixLookAtLH( 
&matView, &vEyePt, &vLookatPt, &vUpVec );
    pd3dDevice
->SetTransform( D3DTS_VIEW, &matView );

    
//初始化树木世界矩阵
    D3DXMatrixIdentity(&g_matTree);

    
//使用广告板矩阵
    static D3DXMATRIX matBillBoard;
    
if(g_bUseBillBoard == true)
    {
        
//根据当前观察方向构造广告板矩阵
        D3DXVECTOR3 vDir = vLookatPt - vEyePt;
        
if( vDir.x > 0.0f )
            D3DXMatrixRotationY( 
&matBillBoard, -atanf(vDir.z/vDir.x)+D3DX_PI/2 );
        
else
            D3DXMatrixRotationY( 
&matBillBoard, -atanf(vDir.z/vDir.x)-D3DX_PI/2 );

        
//为树木矩阵乘以广告板矩阵
        g_matTree = matBillBoard*g_matTree;
    }
}


//-----------------------------------------------------------------------------
// Desc: 渲染场景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, 
                            
float fElapsedTime, void* pUserContext )
{
    HRESULT hr;
  
    
//如果正在利用Direct3D设备设置对话框进行设置, 则不渲染场景
    if( g_SettingsDlg.IsActive() )
    {
        g_SettingsDlg.OnRender( fElapsedTime );
        
return;
    }

    
//清除后台颜色缓冲区和深度缓冲区
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 
                         D3DCOLOR_ARGB(
04550170), 1.0f0) );

    
//渲染场景
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
        
//渲染地面
        pd3dDevice->SetTransform( D3DTS_WORLD, &g_matGround );
        pd3dDevice
->SetTexture( 0, g_pGroundTex );
        pd3dDevice
->SetStreamSource( 0, g_pGroundVB, 0sizeof(CUSTOMVERTEX) );
        pd3dDevice
->SetFVF( D3DFVF_CUSTOMVERTEX );
        pd3dDevice
->DrawPrimitive( D3DPT_TRIANGLESTRIP, 02 );

        
//渲染树木
        pd3dDevice->SetTransform( D3DTS_WORLD, &g_matTree );
        pd3dDevice
->SetTexture( 0, g_pTreeTex );
        pd3dDevice
->SetStreamSource( 0, g_pTreeVB, 0sizeof(CUSTOMVERTEX) );
        pd3dDevice
->SetFVF( D3DFVF_CUSTOMVERTEX );
        pd3dDevice
->DrawPrimitive( D3DPT_TRIANGLESTRIP, 02 );

        
//渲染文本和对话框
        DXUT_BeginPerfEvent( DXUT_PERFEVENTCOLOR, L"HUD / Stats" ); 
        RenderText();
        V( g_HUD.OnRender( fElapsedTime ) );
        V( g_SampleUI.OnRender( fElapsedTime ) );
        DXUT_EndPerfEvent();

        V( pd3dDevice
->EndScene() );
    }
}


//-----------------------------------------------------------------------------
// Desc: 渲染文本
//-----------------------------------------------------------------------------
void RenderText()
{
    CDXUTTextHelper txtHelper( g_pFont, g_pTextSprite, 
15 );

    
//显示当前Direct3D设备状态和渲染帧速率
    txtHelper.Begin();
    txtHelper.SetInsertionPos( 
55 );
    txtHelper.SetForegroundColor( D3DXCOLOR( 
1.0f1.0f0.0f1.0f ) );
    txtHelper.DrawTextLine( DXUTGetFrameStats(
true) );
    txtHelper.DrawTextLine( DXUTGetDeviceStats() );

    
//显示其他简要信息
    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f1.0f1.0f1.0f ) );
    txtHelper.DrawTextLine( L
"BillBoard技术演示" );
    
    
//显示简单帮助文本
    const D3DSURFACE_DESC* pd3dsdBackBuffer = DXUTGetBackBufferSurfaceDesc();
    
if( g_bShowHelp )
    {
        txtHelper.SetInsertionPos( 
10, pd3dsdBackBuffer->Height-15*6 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 
1.0f0.75f0.0f1.0f ) );
        txtHelper.DrawTextLine( L
"Controls (F1 to hide):" );

        txtHelper.SetInsertionPos( 
40, pd3dsdBackBuffer->Height-15*5 );
        txtHelper.DrawTextLine( L
"Quit: ESC" );
    }
    
else
    {
        txtHelper.SetInsertionPos( 
10, pd3dsdBackBuffer->Height-15*2 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 
1.0f1.0f1.0f1.0f ) );
        txtHelper.DrawTextLine( L
"Press F1 for help" );
    }
    txtHelper.End();
}


//-----------------------------------------------------------------------------
// Desc: 消息处理
//-----------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, 
                         
bool* pbNoFurtherProcessing, void* pUserContext )
{
    
*pbNoFurtherProcessing = g_DialogResourceManager.MsgProc( hWnd, uMsg, wParam, lParam );
    
if*pbNoFurtherProcessing )
        
return 0;

    
if( g_SettingsDlg.IsActive() )
    {
        g_SettingsDlg.MsgProc( hWnd, uMsg, wParam, lParam );
        
return 0;
    }

    
*pbNoFurtherProcessing = g_HUD.MsgProc( hWnd, uMsg, wParam, lParam );
    
if*pbNoFurtherProcessing )
        
return 0;
   
    
*pbNoFurtherProcessing = g_SampleUI.MsgProc( hWnd, uMsg, wParam, lParam );
    
if*pbNoFurtherProcessing )
        
return 0;

    
return 0;
}


//-----------------------------------------------------------------------------
// Desc: 键盘消息处理
//-----------------------------------------------------------------------------
void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown, void* pUserContext )
{
    
if( bKeyDown )
    {
        
switch( nChar )
        {
            
case VK_F1: g_bShowHelp = !g_bShowHelp; break;
        }
    }
}


//-----------------------------------------------------------------------------
// Desc: 处理各种控件消息
//-----------------------------------------------------------------------------
void CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl, 
                         
void* pUserContext )
{
    
switch( nControlID )
    {
        
case IDC_TOGGLEFULLSCREEN:
            DXUTToggleFullScreen(); 
            
break;

        
case IDC_TOGGLEREF:
            DXUTToggleREF(); 
            
break;

        
case IDC_CHANGEDEVICE:
            g_SettingsDlg.SetActive( 
!g_SettingsDlg.IsActive() ); 
            
break;

        
case IDC_USEBILLBOARD:
            g_bUseBillBoard 
= g_HUD.GetCheckBox( IDC_USEBILLBOARD )->GetChecked();
            
break;
    }
}


//-----------------------------------------------------------------------------
// Desc: 释放在OnResetDevice()中创建的资源
//-----------------------------------------------------------------------------
void CALLBACK OnLostDevice( void* pUserContext )
{
    g_DialogResourceManager.OnLostDevice();
    g_SettingsDlg.OnLostDevice();
    
if( g_pFont )
        g_pFont
->OnLostDevice();
    SAFE_RELEASE( g_pTextSprite );
}


//------------------------------------------------------------------------------
// Desc: 释放在OnCreateDevice()中创建的资源
//------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice( void* pUserContext )
{
    g_DialogResourceManager.OnDestroyDevice();
    g_SettingsDlg.OnDestroyDevice();
    SAFE_RELEASE( g_pFont );

    SAFE_RELEASE(g_pGroundVB);
    SAFE_RELEASE(g_pTreeVB);
    SAFE_RELEASE(g_pGroundTex);
    SAFE_RELEASE(g_pTreeTex);
}










posted on 2008-04-16 11:15 七星重剑 阅读(1409) 评论(0)  编辑 收藏 引用 所属分类: Game Graphics

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