《精通DirectX 3D》第十二章 高级纹理应用 08_VolumeTexture
//
=============================================================================
// Desc: 主程序源文件
// =============================================================================
#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; //
CDXUTDialog g_SampleUI; //
LPDIRECT3DVOLUMETEXTURE9 g_pVolumeTexture = NULL; // 立体纹理
LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL; // 顶点缓冲区
// 顶点结构和顶点格式
struct CUSTOMVERTEX
{
FLOAT x, y, z;
FLOAT tu, tv, tw;
} ;
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ | D3DFVF_TEX1 | D3DFVF_TEXCOORDSIZE3(0))
// -----------------------------------------------------------------------------
// 控件ID
// -----------------------------------------------------------------------------
#define IDC_TOGGLEFULLSCREEN 1
#define IDC_TOGGLEREF 2
#define IDC_CHANGEDEVICE 3
// -----------------------------------------------------------------------------
// 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( true, true, true );
DXUTSetCursorSettings( true, true );
DXUTCreateWindow( L"Volume Texture" );
DXUTCreateDevice( D3DADAPTER_DEFAULT, true, 640, 480,
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, 125, 22 );
g_HUD.AddButton( IDC_TOGGLEREF, L"Toggle REF (F3)", 35, iY += 24, 125, 22 );
g_HUD.AddButton( IDC_CHANGEDEVICE, L"Change device (F2)", 35, iY += 24, 125, 22, VK_F2 );
}
// -----------------------------------------------------------------------------
// 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;
//检查是否支持立体纹理
if( 0 == ( pCaps->TextureCaps & D3DPTEXTURECAPS_VOLUMEMAP ) )
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, 15, 0, FW_BOLD, 1, FALSE, DEFAULT_CHARSET,
OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE,
L"Arial", &g_pFont ) );
//设置顶点数据
CUSTOMVERTEX g_Vertices[] =
{
{ -3.0f, -3.0f, 0.0f, 0.0f, 1.0f, 0.0f},
{ -3.0f, 3.0f, 0.0f, 0.0f, 0.0f, 0.0f},
{ 3.0f, -3.0f, 0.0f, 1.0f, 1.0f, 0.0f},
{ 3.0f, 3.0f, 0.0f, 1.0f, 0.0f, 0.0f}
};
//创建顶点缓冲区
if( FAILED( pd3dDevice->CreateVertexBuffer( 4*sizeof(CUSTOMVERTEX),
0, D3DFVF_CUSTOMVERTEX,
D3DPOOL_MANAGED, &g_pVB,NULL ) ) )
{
return E_FAIL;
}
//填充顶点数据
VOID* pVertices;
if( FAILED( g_pVB->Lock( 0, sizeof(g_Vertices), (void**)&pVertices, 0 ) ) )
return E_FAIL;
memcpy( pVertices, g_Vertices, sizeof(g_Vertices) );
g_pVB->Unlock();
//创建立体纹理
hr = pd3dDevice->CreateVolumeTexture( 16, 16, 16, 1, 0,
D3DFMT_A8R8G8B8, D3DPOOL_MANAGED,
&g_pVolumeTexture, NULL );
if( FAILED(hr) )
return hr;
//填充立体纹理
D3DLOCKED_BOX LockedBox;
hr = g_pVolumeTexture->LockBox( 0, &LockedBox, 0, 0 );
if( FAILED(hr) )
return hr;
for( UINT w=0; w<16; w++ )
{
BYTE* pSliceStart = (BYTE*)LockedBox.pBits;
for( UINT v=0; v<16; v++ )
{
for( UINT u=0; u<16; u++ )
{
FLOAT du = (u-7.5f)/7.5f;
FLOAT dv = (v-7.5f)/7.5f;
FLOAT dw = (w-7.5f)/7.5f;
FLOAT fScale = sqrtf( du*du + dv*dv + dw*dw ) / sqrtf(1.0f);
if( fScale > 1.0f ) fScale = 0.0f;
else fScale = 1.0f - fScale;
DWORD r = (DWORD)((w<<4)*fScale);
DWORD g = (DWORD)((v<<4)*fScale);
DWORD b = (DWORD)((u<<4)*fScale);
((DWORD*)LockedBox.pBits)[u] = 0xff000000 + (r<<16) + (g<<8) + (b);
}
LockedBox.pBits = (BYTE*)LockedBox.pBits + LockedBox.RowPitch;
}
LockedBox.pBits = pSliceStart + LockedBox.SlicePitch;
}
g_pVolumeTexture->UnlockBox( 0 );
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-170, 0 );
g_HUD.SetSize( 170, 170 );
g_SampleUI.SetLocation( pBackBufferSurfaceDesc->Width-170,
pBackBufferSurfaceDesc->Height-350 );
g_SampleUI.SetSize( 170, 300 );
//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 ) );
//设置观察矩阵
D3DXMATRIXA16 matView;
D3DXVECTOR3 vEyePt( 0.0f, 0.0f,-8 );
D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
pd3dDevice->SetTransform( D3DTS_VIEW, &matView );
//设置投影矩阵
D3DXMATRIXA16 matProj;
float fAspectRatio = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspectRatio, 1.0f, 100.0f );
pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
//设置纹理阶段状态
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 );
return S_OK;
}
// -----------------------------------------------------------------------------
// Desc: 更新场景
// -----------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9 * pd3dDevice, double fTime,
float fElapsedTime, void * pUserContext )
{
//改变立体纹理坐标
CUSTOMVERTEX* pVertices = NULL;
float fAngle = (float)fTime / 2.0f;
g_pVB->Lock( 0, 0, (void**)&pVertices, 0 );
for( int i=0; i<4; i++ )
pVertices[i].tw = sinf(fAngle)*sinf(fAngle);
g_pVB->Unlock();
}
// -----------------------------------------------------------------------------
// 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(0, 45, 50, 170), 1.0f, 0) );
//渲染场景
if( SUCCEEDED( pd3dDevice->BeginScene() ) )
{
//渲染场景
pd3dDevice->SetTexture( 0, g_pVolumeTexture );
pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) );
pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, 0, 2);
//渲染文本和控件
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( 5, 5 );
txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 0.0f, 1.0f ) );
txtHelper.DrawTextLine( DXUTGetFrameStats(true) );
txtHelper.DrawTextLine( DXUTGetDeviceStats() );
//显示其他简要信息
txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
txtHelper.DrawTextLine( L"立体纹理" );
//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( 1.0f, 0.75f, 0.0f, 1.0f ) );
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( 1.0f, 1.0f, 1.0f, 1.0f ) );
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;
}
}
// -----------------------------------------------------------------------------
// 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_pVolumeTexture );
SAFE_RELEASE( g_pVB );
}
// Desc: 主程序源文件
// =============================================================================
#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; //
CDXUTDialog g_SampleUI; //
LPDIRECT3DVOLUMETEXTURE9 g_pVolumeTexture = NULL; // 立体纹理
LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL; // 顶点缓冲区
// 顶点结构和顶点格式
struct CUSTOMVERTEX
{
FLOAT x, y, z;
FLOAT tu, tv, tw;
} ;
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ | D3DFVF_TEX1 | D3DFVF_TEXCOORDSIZE3(0))
// -----------------------------------------------------------------------------
// 控件ID
// -----------------------------------------------------------------------------
#define IDC_TOGGLEFULLSCREEN 1
#define IDC_TOGGLEREF 2
#define IDC_CHANGEDEVICE 3
// -----------------------------------------------------------------------------
// 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( true, true, true );
DXUTSetCursorSettings( true, true );
DXUTCreateWindow( L"Volume Texture" );
DXUTCreateDevice( D3DADAPTER_DEFAULT, true, 640, 480,
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, 125, 22 );
g_HUD.AddButton( IDC_TOGGLEREF, L"Toggle REF (F3)", 35, iY += 24, 125, 22 );
g_HUD.AddButton( IDC_CHANGEDEVICE, L"Change device (F2)", 35, iY += 24, 125, 22, VK_F2 );
}
// -----------------------------------------------------------------------------
// 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;
//检查是否支持立体纹理
if( 0 == ( pCaps->TextureCaps & D3DPTEXTURECAPS_VOLUMEMAP ) )
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, 15, 0, FW_BOLD, 1, FALSE, DEFAULT_CHARSET,
OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE,
L"Arial", &g_pFont ) );
//设置顶点数据
CUSTOMVERTEX g_Vertices[] =
{
{ -3.0f, -3.0f, 0.0f, 0.0f, 1.0f, 0.0f},
{ -3.0f, 3.0f, 0.0f, 0.0f, 0.0f, 0.0f},
{ 3.0f, -3.0f, 0.0f, 1.0f, 1.0f, 0.0f},
{ 3.0f, 3.0f, 0.0f, 1.0f, 0.0f, 0.0f}
};
//创建顶点缓冲区
if( FAILED( pd3dDevice->CreateVertexBuffer( 4*sizeof(CUSTOMVERTEX),
0, D3DFVF_CUSTOMVERTEX,
D3DPOOL_MANAGED, &g_pVB,NULL ) ) )
{
return E_FAIL;
}
//填充顶点数据
VOID* pVertices;
if( FAILED( g_pVB->Lock( 0, sizeof(g_Vertices), (void**)&pVertices, 0 ) ) )
return E_FAIL;
memcpy( pVertices, g_Vertices, sizeof(g_Vertices) );
g_pVB->Unlock();
//创建立体纹理
hr = pd3dDevice->CreateVolumeTexture( 16, 16, 16, 1, 0,
D3DFMT_A8R8G8B8, D3DPOOL_MANAGED,
&g_pVolumeTexture, NULL );
if( FAILED(hr) )
return hr;
//填充立体纹理
D3DLOCKED_BOX LockedBox;
hr = g_pVolumeTexture->LockBox( 0, &LockedBox, 0, 0 );
if( FAILED(hr) )
return hr;
for( UINT w=0; w<16; w++ )
{
BYTE* pSliceStart = (BYTE*)LockedBox.pBits;
for( UINT v=0; v<16; v++ )
{
for( UINT u=0; u<16; u++ )
{
FLOAT du = (u-7.5f)/7.5f;
FLOAT dv = (v-7.5f)/7.5f;
FLOAT dw = (w-7.5f)/7.5f;
FLOAT fScale = sqrtf( du*du + dv*dv + dw*dw ) / sqrtf(1.0f);
if( fScale > 1.0f ) fScale = 0.0f;
else fScale = 1.0f - fScale;
DWORD r = (DWORD)((w<<4)*fScale);
DWORD g = (DWORD)((v<<4)*fScale);
DWORD b = (DWORD)((u<<4)*fScale);
((DWORD*)LockedBox.pBits)[u] = 0xff000000 + (r<<16) + (g<<8) + (b);
}
LockedBox.pBits = (BYTE*)LockedBox.pBits + LockedBox.RowPitch;
}
LockedBox.pBits = pSliceStart + LockedBox.SlicePitch;
}
g_pVolumeTexture->UnlockBox( 0 );
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-170, 0 );
g_HUD.SetSize( 170, 170 );
g_SampleUI.SetLocation( pBackBufferSurfaceDesc->Width-170,
pBackBufferSurfaceDesc->Height-350 );
g_SampleUI.SetSize( 170, 300 );
//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 ) );
//设置观察矩阵
D3DXMATRIXA16 matView;
D3DXVECTOR3 vEyePt( 0.0f, 0.0f,-8 );
D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
pd3dDevice->SetTransform( D3DTS_VIEW, &matView );
//设置投影矩阵
D3DXMATRIXA16 matProj;
float fAspectRatio = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspectRatio, 1.0f, 100.0f );
pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
//设置纹理阶段状态
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 );
return S_OK;
}
// -----------------------------------------------------------------------------
// Desc: 更新场景
// -----------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9 * pd3dDevice, double fTime,
float fElapsedTime, void * pUserContext )
{
//改变立体纹理坐标
CUSTOMVERTEX* pVertices = NULL;
float fAngle = (float)fTime / 2.0f;
g_pVB->Lock( 0, 0, (void**)&pVertices, 0 );
for( int i=0; i<4; i++ )
pVertices[i].tw = sinf(fAngle)*sinf(fAngle);
g_pVB->Unlock();
}
// -----------------------------------------------------------------------------
// 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(0, 45, 50, 170), 1.0f, 0) );
//渲染场景
if( SUCCEEDED( pd3dDevice->BeginScene() ) )
{
//渲染场景
pd3dDevice->SetTexture( 0, g_pVolumeTexture );
pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) );
pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, 0, 2);
//渲染文本和控件
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( 5, 5 );
txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 0.0f, 1.0f ) );
txtHelper.DrawTextLine( DXUTGetFrameStats(true) );
txtHelper.DrawTextLine( DXUTGetDeviceStats() );
//显示其他简要信息
txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
txtHelper.DrawTextLine( L"立体纹理" );
//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( 1.0f, 0.75f, 0.0f, 1.0f ) );
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( 1.0f, 1.0f, 1.0f, 1.0f ) );
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;
}
}
// -----------------------------------------------------------------------------
// 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_pVolumeTexture );
SAFE_RELEASE( g_pVB );
}