HLSLSelfShadowing.fx
//==============================================================
// Desc: 效果文件
//==============================================================
//--------------------------------------------------------------
// 全局變量
//--------------------------------------------------------------
float4x4 matWorldViewProj;
float4x4 matWorld;
float4 vecLightDir;
float4 vecEye;
float4 materialAmbient;
float4 materialDiffuse;
float4 materialSpecular;
//-------------------------------------------------------------
// 頂點渲染器輸出結構
//-------------------------------------------------------------
struct VS_OUTPUT
{
float4 Pos : POSITION;
float4 Color : COLOR;
};
//-------------------------------------------------------------
// 頂點渲染器
//-------------------------------------------------------------
VS_OUTPUT VS( float4 Pos: POSITION, float3 Normal: NORMAL,
uniform bool bEnableSelfShadow )
{
VS_OUTPUT Out = (VS_OUTPUT) 0;
//頂點坐標變換
Out.Pos = mul(Pos, matWorldViewProj);
//單位化光照方向向量
float3 LightDir = normalize( vecLightDir );
//計算觀察方向
float3 PosWorld = normalize( mul(Pos, matWorld) );
float3 ViewDir = normalize( vecEye - PosWorld );
//計算法向量方向和漫反射強度
float3 NormalWorld = normalize( mul(Normal, matWorld) );
float4 diff = saturate( dot(NormalWorld, LightDir) );
//計算反射光方向( R = 2 * (N.L) * N - L)和鏡面反射強度
float3 Reflect = normalize( 2 * diff * NormalWorld - LightDir );
float4 specu = pow( saturate(dot(Reflect, ViewDir)), 0.5 );
//各種光的顏色
float4 ambientColor = { 0.1f, 0.0f, 0.0f, 1.0f};
float4 diffuseColor = { 1.0f, 0.0f, 0.0f, 1.0f};
float4 specularColor = { 1.0f, 0.0f, 0.0f, 1.0f};
//計算頂點顏色
if(bEnableSelfShadow) //啟用自陰影
{
float shadow = saturate(4* diff);
//計算頂點顏色 = Ambient + Shadow * ( Diffuse + Specular )
Out.Color = ambientColor * materialAmbient + shadow *
(diffuseColor * materialDiffuse * diff +
specularColor * specu * materialSpecular);
}
else //禁用自陰影
{
Out.Color = ambientColor * materialAmbient +
diffuseColor * materialDiffuse * diff +
specularColor * specu * materialSpecular;
}
return Out;
}
//--------------------------------------------------------------
// 技術
//--------------------------------------------------------------
technique TShaderSelfShadow
{
pass P0
{
VertexShader = compile vs_2_0 VS(true);
}
}
technique TShaderNoSelfShadow
{
pass P0
{
VertexShader = compile vs_2_0 VS(false);
}
}
//=============================================================================
// Desc: 主程序源文件
//=============================================================================
#include "dxstdafx.h"
#include "resource.h"
//#define DEBUG_VS // Uncomment this line to debug vertex shaders
//#define DEBUG_PS // Uncomment this line to debug pixel shaders
//-----------------------------------------------------------------------------
// 全局變量
//-----------------------------------------------------------------------------
ID3DXFont* g_pFont = NULL; //ID3DXFont字體對象
ID3DXSprite* g_pTextSprite = NULL; //ID3DXSprite文本精靈對象
bool g_bShowHelp = true; //標識是否顯示簡單說明文本
CDXUTDialogResourceManager g_DialogResourceManager; //對話框資源管理器
CD3DSettingsDlg g_SettingsDlg; //Direct3D設備設置對話框
CDXUTDialog g_HUD; //對話框
CDXUTDialog g_SampleUI; //對話框
LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL; //頂點緩沖區
LPD3DXEFFECT g_pEffect = NULL; //效果
bool g_bEnableSelfShadow; //標志是否啟用預編譯渲染器
//頂點結構和靈活頂點格式
struct CUSTOMVERTEX
{
D3DXVECTOR3 position; //位置
D3DXVECTOR3 normal; //法線
};
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_NORMAL)
//-----------------------------------------------------------------------------
// 控件ID
//-----------------------------------------------------------------------------
#define IDC_TOGGLEFULLSCREEN 1
#define IDC_TOGGLEREF 2
#define IDC_CHANGEDEVICE 3
#define IDC_ENABLE_SELFSHADOW 4
//-----------------------------------------------------------------------------
// Desc: 函數聲明
//------------------------------------------------------------------------------
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: 入口函數
//-----------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
{
//為Debug配置啟用運行時內存檢查功能
#if defined(DEBUG) | defined(_DEBUG)
_CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif
//設置回調函數
DXUTSetCallbackDeviceCreated( OnCreateDevice );
DXUTSetCallbackDeviceReset( OnResetDevice );
DXUTSetCallbackDeviceLost( OnLostDevice );
DXUTSetCallbackDeviceDestroyed( OnDestroyDevice );
DXUTSetCallbackMsgProc( MsgProc );
DXUTSetCallbackKeyboard( KeyboardProc );
DXUTSetCallbackFrameRender( OnFrameRender );
DXUTSetCallbackFrameMove( OnFrameMove );
//應用程序相關的初始化
InitApp();
//初始化DXUT, 創建窗口, 創建Direct3D設備對象
DXUTInit( true, true, true );
DXUTSetCursorSettings( true, true );
DXUTCreateWindow( L"HLSLSelfShadowing" );
DXUTCreateDevice( D3DADAPTER_DEFAULT, true, 640, 480,
IsDeviceAcceptable, ModifyDeviceSettings );
//進入消息循環和場景渲染
DXUTMainLoop();
//在此進行應用程序相關的清除工作
return DXUTGetExitCode();
}
//-----------------------------------------------------------------------------
// Desc: 應用程序相關初始化
//-----------------------------------------------------------------------------
void InitApp()
{
//初始化對話框
g_SettingsDlg.Init( &g_DialogResourceManager );
g_HUD.Init( &g_DialogResourceManager );
g_SampleUI.Init( &g_DialogResourceManager );
//為g_HUD對話框設置消息處理函數,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 );
//為g_SampleUI對話框設置消息處理函數,添加控件
g_SampleUI.SetCallback( OnGUIEvent ); iY = 0;
g_bEnableSelfShadow = true;
g_SampleUI.AddCheckBox( IDC_ENABLE_SELFSHADOW, L"Enable preshaders", 35, iY, 125, 22, true );
}
//-----------------------------------------------------------------------------
// Desc: 設備能力檢查
//-----------------------------------------------------------------------------
bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat,
D3DFORMAT BackBufferFormat, bool bWindowed,
void* pUserContext )
{
//檢查后臺緩沖區格式是否支持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;
//檢查當前設備支持的頂點渲染器版本
if( pCaps->VertexShaderVersion < D3DVS_VERSION(2,0) )
return FALSE;
return true;
}
//-----------------------------------------------------------------------------
// Desc: 修改Direct3D渲染設備設置
//-----------------------------------------------------------------------------
bool CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings,
const D3DCAPS9* pCaps, void* pUserContext )
{
//如果不支持硬件頂點處理則使用軟件頂點處理
if( (pCaps->DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) == 0)
{
pDeviceSettings->BehaviorFlags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
}
//調試頂點渲染器需要參考設備或軟件頂點處理
#ifdef DEBUG_VS
if( pDeviceSettings->DeviceType != D3DDEVTYPE_REF )
{
pDeviceSettings->BehaviorFlags &= ~D3DCREATE_HARDWARE_VERTEXPROCESSING;
pDeviceSettings->BehaviorFlags &= ~D3DCREATE_PUREDEVICE;
pDeviceSettings->BehaviorFlags |= D3DCREATE_SOFTWARE_VERTEXPROCESSING;
}
#endif
//調試像素渲染器需要參考設備
#ifdef DEBUG_PS
pDeviceSettings->DeviceType = D3DDEVTYPE_REF;
#endif
//如果使用參考設備,則彈出警告對話框
static bool s_bFirstTime = true;
if( s_bFirstTime )
{
s_bFirstTime = false;
if( pDeviceSettings->DeviceType == D3DDEVTYPE_REF )
DXUTDisplaySwitchingToREFWarning();
}
return true;
}
//-----------------------------------------------------------------------------
// Desc: 在此創建管理內存資源對象
//-----------------------------------------------------------------------------
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 ) );
//創建字體
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 ) );
//創建頂點緩沖區
V_RETURN( pd3dDevice->CreateVertexBuffer( 50*2*sizeof(CUSTOMVERTEX),
0, D3DFVF_CUSTOMVERTEX,
D3DPOOL_MANAGED, &g_pVB, NULL ));
//填充頂點緩沖區
CUSTOMVERTEX* pVertices;
V_RETURN( g_pVB->Lock( 0, 0, (void**)&pVertices, 0 ) );
for( DWORD i=0; i<50; i++ )
{
FLOAT theta = (2*D3DX_PI*i)/(50-1);
pVertices[2*i+0].position = D3DXVECTOR3( sinf(theta),-1.0f, cosf(theta) );
pVertices[2*i+0].normal = D3DXVECTOR3( sinf(theta), 0.0f, cosf(theta) );
pVertices[2*i+1].position = D3DXVECTOR3( sinf(theta), 1.0f, cosf(theta) );
pVertices[2*i+1].normal = D3DXVECTOR3( sinf(theta), 0.0f, cosf(theta) );
}
g_pVB->Unlock();
//創建效果
V_RETURN(D3DXCreateEffectFromFile( pd3dDevice, L"HLSLSelfShadowing.fx", NULL, NULL,
D3DXSHADER_DEBUG, NULL, &g_pEffect, NULL ));
return S_OK;
}
//-----------------------------------------------------------------------------
// Desc: 在此創建默認內存類型資源對象
//-----------------------------------------------------------------------------
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice,
const D3DSURFACE_DESC* pBackBufferSurfaceDesc,
void* pUserContext )
{
HRESULT hr;
V_RETURN( g_DialogResourceManager.OnResetDevice() );
V_RETURN( g_SettingsDlg.OnResetDevice() );
//設置對話框位置和尺寸
g_HUD.SetLocation( pBackBufferSurfaceDesc->Width-170, 0 );
g_HUD.SetSize( 170, 170 );
g_SampleUI.SetLocation( pBackBufferSurfaceDesc->Width-170,
pBackBufferSurfaceDesc->Height-50 );
g_SampleUI.SetSize( 170, 50 );
//恢復字體
if( g_pFont )
V_RETURN( g_pFont->OnResetDevice() );
//創建ID3DXSprite接口對象
V_RETURN( D3DXCreateSprite( pd3dDevice, &g_pTextSprite ) );
//恢復效果對象
if( g_pEffect )
V_RETURN( g_pEffect->OnResetDevice() );
//構造世界矩陣
D3DXMATRIX matWorld;
D3DXMatrixIdentity( &matWorld );
//構造觀察矩陣
D3DXMATRIXA16 matView;
D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-5 );
D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
//構造投影矩陣
D3DXMATRIXA16 matProj;
float fAspectRatio = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspectRatio, 1.0f, 100.0f );
//為效果設置組合變換矩陣和世界矩陣
D3DXMATRIX mWorldViewProj = matWorld * matView * matProj;
g_pEffect->SetMatrix( "matWorldViewProj", &mWorldViewProj );
g_pEffect->SetMatrix( "matWorld", &matWorld );
//為效果設置觀察點位置
D3DXVECTOR4 vecEyeInEffect = D3DXVECTOR4(vEyePt.x, vEyePt.y, vEyePt.z, 0);
g_pEffect->SetVector( "vecEye", &vecEyeInEffect );
//為效果設置材質反射系數
D3DXVECTOR4 mtrlAmbientInEffect = D3DXVECTOR4( 0.5f, 0.5f, 0.0f, 1.0f );
D3DXVECTOR4 mtrlDiffuseInEffect = D3DXVECTOR4( 1.0f, 1.0f, 0.0f, 1.0f );
D3DXVECTOR4 mtrlSpecularInEffect = D3DXVECTOR4( 1.0f, 1.0f, 1.0f, 1.0f );
g_pEffect->SetVector( "materialAmbient", &mtrlAmbientInEffect );
g_pEffect->SetVector( "materialDiffuse", &mtrlDiffuseInEffect );
g_pEffect->SetVector( "materialSpecular", &mtrlSpecularInEffect);
//設置剔出模式,為不剔出任何面
hr = pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
return S_OK;
}
//-----------------------------------------------------------------------------
// Desc: 更新場景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime,
float fElapsedTime, void* pUserContext )
{
//為效果設置光的方向
D3DXVECTOR4 lightDir = D3DXVECTOR4( cosf(timeGetTime()/350.0f), 1.0f,
sinf(timeGetTime()/350.0f), 1.0f );
g_pEffect->SetVector( "vecLightDir", &lightDir );
}
//-----------------------------------------------------------------------------
// Desc: 渲染場景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime,
float fElapsedTime, void* pUserContext )
{
HRESULT hr;
//如果正在利用Direct3D設備設置對話框進行設置, 則不渲染場景
if( g_SettingsDlg.IsActive() )
{
g_SettingsDlg.OnRender( fElapsedTime );
return;
}
//清除后臺顏色緩沖區和深度緩沖區
V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER,
D3DCOLOR_ARGB(0, 45, 50, 170), 1.0f, 0) );
//渲染場景
if( SUCCEEDED( pd3dDevice->BeginScene() ) )
{
//使用效果渲染圖形
if(g_bEnableSelfShadow)
{
V(g_pEffect->SetTechnique( "TShaderSelfShadow" ));
}
else
{
V(g_pEffect->SetTechnique( "TShaderNoSelfShadow" ));
}
UINT nPasses;
g_pEffect->Begin( &nPasses, 0 );
for( UINT iPass = 0; iPass < nPasses; iPass ++ )
{
V(g_pEffect->BeginPass( iPass ));
V(pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) ));
V(pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX ));
V(pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, 0, 2*50-2 ));
V(g_pEffect->EndPass());
}
g_pEffect->End();
//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 );
//顯示當前Direct3D設備狀態和渲染幀速率
txtHelper.Begin();
txtHelper.SetInsertionPos( 5, 5 );
txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 0.0f, 1.0f ) );
txtHelper.DrawTextLine( DXUTGetFrameStats(true) );
txtHelper.DrawTextLine( DXUTGetDeviceStats() );
//顯示其他簡要信息
txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
txtHelper.DrawTextLine( L"通過HLSL編程實現自遮蔽陰影" );
//顯示簡單幫助文本
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: 消息處理
//-----------------------------------------------------------------------------
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: 鍵盤消息處理
//-----------------------------------------------------------------------------
void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown, void* pUserContext )
{
if( bKeyDown )
{
switch( nChar )
{
case VK_F1: g_bShowHelp = !g_bShowHelp; break;
}
}
}
//-----------------------------------------------------------------------------
// Desc: 處理各種控件消息
//-----------------------------------------------------------------------------
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_ENABLE_SELFSHADOW:
g_bEnableSelfShadow = g_SampleUI.GetCheckBox( IDC_ENABLE_SELFSHADOW )->GetChecked();
break;
}
}
//-----------------------------------------------------------------------------
// Desc: 釋放在OnResetDevice()中創建的資源
//-----------------------------------------------------------------------------
void CALLBACK OnLostDevice( void* pUserContext )
{
g_DialogResourceManager.OnLostDevice();
g_SettingsDlg.OnLostDevice();
if( g_pFont )
g_pFont->OnLostDevice();
SAFE_RELEASE( g_pTextSprite );
if( g_pEffect )
g_pEffect->OnLostDevice();
}
//------------------------------------------------------------------------------
// Desc: 釋放在OnCreateDevice()中創建的資源
//------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice( void* pUserContext )
{
g_DialogResourceManager.OnDestroyDevice();
g_SettingsDlg.OnDestroyDevice();
SAFE_RELEASE( g_pFont );
SAFE_RELEASE(g_pVB);
SAFE_RELEASE(g_pEffect);
}
posted on 2008-04-14 18:30
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