directx direct3d 的第八章的内容详细注释说明.docx
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directxdirect3d的第八章的内容详细注释说明
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d3dUtility.cpp
//////////////////////////////////////////////////////////////////////////////////////////////////
//
//File:
d3dUtility.cpp
//
//Author:
FrankLuna（C）AllRightsReserved
//
//System:
AMDAthlon1800+XP,512DDR,Geforce3,WindowsXP,MSVC++7.0
//
//Desc:
Providesutilityfunctionsforsimplifyingcommontasks.
//
//////////////////////////////////////////////////////////////////////////////////////////////////
#include"d3dUtility.h"
boold3d:
:
InitD3D（
HINSTANCEhInstance,
intwidth,intheight,
boolwindowed,
D3DDEVTYPEdeviceType,
IDirect3DDevice9**device）
{
//
//Createthemainapplicationwindow.
//
WNDCLASSwc;
wc.style=CS_HREDRAW|CS_VREDRAW;
wc.lpfnWndProc=（WNDPROC）d3d:
:
WndProc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hInstance=hInstance;
wc.hIcon=LoadIcon（0,IDI_APPLICATION）;
wc.hCursor=LoadCursor（0,IDC_ARROW）;
wc.hbrBackground=（HBRUSH）GetStockObject（WHITE_BRUSH）;
wc.lpszMenuName=0;
wc.lpszClassName="Direct3D9App";
if（!
RegisterClass（&wc））
{
:
:
MessageBox（0,"RegisterClass（）-FAILED",0,0）;
returnfalse;
}
HWNDhwnd=0;
hwnd=:
:
CreateWindow（"Direct3D9App","Direct3D9App",
WS_EX_TOPMOST,
0,0,width,height,
0/*parenthwnd*/,0/*menu*/,hInstance,0/*extra*/）;
if（!
hwnd）
{
:
:
MessageBox（0,"CreateWindow（）-FAILED",0,0）;
returnfalse;
}
:
:
ShowWindow（hwnd,SW_SHOW）;
:
:
UpdateWindow（hwnd）;
//
//InitD3D:
//
HRESULThr=0;
//Step1:
CreatetheIDirect3D9object.
IDirect3D9*d3d9=0;
d3d9=Direct3DCreate9（D3D_SDK_VERSION）;
if（!
d3d9）
{
:
:
MessageBox（0,"Direct3DCreate9（）-FAILED",0,0）;
returnfalse;
}
//Step2:
Checkforhardwarevp.
D3DCAPS9caps;
d3d9->GetDeviceCaps（D3DADAPTER_DEFAULT,deviceType,&caps）;
intvp=0;
if（caps.DevCaps&D3DDEVCAPS_HWTRANSFORMANDLIGHT）
vp=D3DCREATE_HARDWARE_VERTEXPROCESSING;
else
vp=D3DCREATE_SOFTWARE_VERTEXPROCESSING;
//Step3:
FillouttheD3DPRESENT_PARAMETERSstructure.
D3DPRESENT_PARAMETERSd3dpp;
d3dpp.BackBufferWidth=width;
d3dpp.BackBufferHeight=height;
d3dpp.BackBufferFormat=D3DFMT_A8R8G8B8;
d3dpp.BackBufferCount=1;
d3dpp.MultiSampleType=D3DMULTISAMPLE_NONE;
d3dpp.MultiSampleQuality=0;
d3dpp.SwapEffect=D3DSWAPEFFECT_DISCARD;
d3dpp.hDeviceWindow=hwnd;
d3dpp.Windowed=windowed;
d3dpp.EnableAutoDepthStencil=true;
d3dpp.AutoDepthStencilFormat=D3DFMT_D24S8;
d3dpp.Flags=0;
d3dpp.FullScreen_RefreshRateInHz=D3DPRESENT_RATE_DEFAULT;
d3dpp.PresentationInterval=D3DPRESENT_INTERVAL_IMMEDIATE;
//Step4:
Createthedevice.
hr=d3d9->CreateDevice（
D3DADAPTER_DEFAULT,//primaryadapter
deviceType,//devicetype
hwnd,//windowassociatedwithdevice
vp,//vertexprocessing
&d3dpp,//presentparameters
device）;//returncreateddevice
if（FAILED（hr））
{
//tryagainusinga16-bitdepthbuffer
d3dpp.AutoDepthStencilFormat=D3DFMT_D16;
hr=d3d9->CreateDevice（
D3DADAPTER_DEFAULT,
deviceType,
hwnd,
vp,
&d3dpp,
device）;
if（FAILED（hr））
{
d3d9->Release（）;//donewithd3d9object
:
:
MessageBox（0,"CreateDevice（）-FAILED",0,0）;
returnfalse;
}
}
d3d9->Release（）;//donewithd3d9object
returntrue;
}
intd3d:
:
EnterMsgLoop（bool（*ptr_display）（floattimeDelta））
{
MSGmsg;
:
:
ZeroMemory（&msg,sizeof（MSG））;
staticfloatlastTime=（float）timeGetTime（）;
while（msg.message!
=WM_QUIT）
{
if（:
:
PeekMessage（&msg,0,0,0,PM_REMOVE））
{
:
:
TranslateMessage（&msg）;
:
:
DispatchMessage（&msg）;
}
else
{
floatcurrTime=（float）timeGetTime（）;
floattimeDelta=（currTime-lastTime）*0.001f;
ptr_display（timeDelta）;
lastTime=currTime;
}
}
returnmsg.wParam;
}
D3DLIGHT9d3d:
:
InitDirectionalLight（D3DXVECTOR3*direction,D3DXCOLOR*color）
{
D3DLIGHT9light;
:
:
ZeroMemory（&light,sizeof（light））;
light.Type=D3DLIGHT_DIRECTIONAL;
light.Ambient=*color*0.4f;
light.Diffuse=*color;
light.Specular=*color*0.6f;
light.Direction=*direction;
returnlight;
}
D3DLIGHT9d3d:
:
InitPointLight（D3DXVECTOR3*position,D3DXCOLOR*color）
{
D3DLIGHT9light;
:
:
ZeroMemory（&light,sizeof（light））;
light.Type=D3DLIGHT_POINT;
light.Ambient=*color*0.4f;
light.Diffuse=*color;
light.Specular=*color*0.6f;
light.Position=*position;
light.Range=10000.0f;
light.Falloff=1.0f;
light.Attenuation0=1.0f;
light.Attenuation1=0.0f;
light.Attenuation2=0.0f;
returnlight;
}
D3DLIGHT9d3d:
:
InitSpotLight（D3DXVECTOR3*position,D3DXVECTOR3*direction,D3DXCOLOR*color）
{
D3DLIGHT9light;
:
:
ZeroMemory（&light,sizeof（light））;
light.Type=D3DLIGHT_SPOT;
light.Ambient=*color*0.4f;
light.Diffuse=*color;
light.Specular=*color*0.6f;
light.Position=*position;
light.Direction=*direction;
light.Range=1000.0f;
light.Falloff=1.0f;
light.Attenuation0=1.0f;
light.Attenuation1=0.0f;
light.Attenuation2=0.0f;
light.Theta=0.5f;
light.Phi=0.7f;
returnlight;
}
D3DMATERIAL9d3d:
:
InitMtrl（D3DXCOLORa,D3DXCOLORd,D3DXCOLORs,D3DXCOLORe,floatp）
{
D3DMATERIAL9mtrl;
mtrl.Ambient=a;
mtrl.Diffuse=d;
mtrl.Specular=s;
mtrl.Emissive=e;
mtrl.Power=p;
returnmtrl;
}
d3dUtility.h
//////////////////////////////////////////////////////////////////////////////////////////////////
//
//File:
d3dUtility.h
//
//Author:
FrankLuna（C）AllRightsReserved
//
//System:
AMDAthlon1800+XP,512DDR,Geforce3,WindowsXP,MSVC++7.0
//
//Desc:
Providesutilityfunctionsforsimplifyingcommontasks.
//
//////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef__d3dUtilityH__
#define__d3dUtilityH__
#include
#include
#include
namespaced3d
{
//
//Windows/Direct3DInitialization
//
boolInitD3D（
HINSTANCEhInstance,//[in]Applicationinstance.
intwidth,intheight,//[in]Backbufferdimensions.
boolwindowed,//[in]Windowed（true）orfullscreen（false）.
D3DDEVTYPEdeviceType,//[in]HALorREF
IDirect3DDevice9**device）;//[out]Thecreateddevice.
intEnterMsgLoop（
bool（*ptr_display）（floattimeDelta））;
LRESULTCALLBACKWndProc（
HWNDhwnd,
UINTmsg,
WPARAMwParam,
LPARAMlParam）;
//
//Cleanup
//
templatevoidRelease（Tt）
{
if（t）
{
t->Release（）;
t=0;
}
}
templatevoidDelete（Tt）
{
if（t）
{
deletet;
t=0;
}
}
//
//Colors
//
constD3DXCOLORWHITE（D3DCOLOR_XRGB（255,255,255））;
constD3DXCOLORBLACK（D3DCOLOR_XRGB（0,0,0））;
constD3DXCOLORRED（D3DCOLOR_XRGB（255,0,0））;
constD3DXCOLORGREEN（D3DCOLOR_XRGB（0,255,0））;
constD3DXCOLORBLUE（D3DCOLOR_XRGB（0,0,255））;
constD3DXCOLORYELLOW（D3DCOLOR_XRGB（255,255,0））;
constD3DXCOLORCYAN（D3DCOLOR_XRGB（0,255,255））;
constD3DXCOLORMAGENTA（D3DCOLOR_XRGB（255,0,255））;
//
//Lights
//
D3DLIGHT9InitDirectionalLight（D3DXVECTOR3*direction,D3DXCOLOR*color）;
D3DLIGHT9InitPointLight（D3DXVECTOR3*position,D3DXCOLOR*color）;
D3DLIGHT9InitSpotLight（D3DXVECTOR3*position,D3DXVECTOR3*direction,D3DXCOLOR*color）;
//
//Materials
//
D3DMATERIAL9InitMtrl（D3DXCOLORa,D3DXCOLORd,D3DXCOLORs,D3DXCOLORe,floatp）;
constD3DMATERIAL9WHITE_MTRL=InitMtrl（WHITE,WHITE,WHITE,BLACK,2.0f）;
constD3DMATERIAL9RED_MTRL=InitMtrl（RED,RED,RED,BLACK,2.0f）;
constD3DMATERIAL9GREEN_MTRL=InitMtrl（GREEN,GREEN,GREEN,BLACK,2.0f）;
constD3DMATERIAL9BLUE_MTRL=InitMtrl（BLUE,BLUE,BLUE,BLACK,2.0f）;
constD3DMATERIAL9YELLOW_MTRL=InitMtrl（YELLOW,YELLOW,YELLOW,BLACK,2.0f）;
//
//BoundingObjects
//
structBoundingBox
{
BoundingBox（）;
boolisPointInside（D3DXVECTOR3&p）;
D3DXVECTOR3_min;
D3DXVECTOR3_max;
};
structBoundingSphere
{
BoundingSphere（）;
D3DXVECTOR3_center;
float_radius;
};
//
//Constants
//
constfloatINFINITY=std:
:
numeric_limits:
:
infinity（）;
constfloatEPSILON=0.001f;
//
//Randomness
//
//Desc:
Returnrandomfloatin[lowBound,highBound]interval.
floatGetRandomFloat（floatlowBound,floathighBound）;
//Desc:
Returnsarandomvectorintheboundsspecifiedbyminandmax.
voidGetRandomVector（
D3DXVECTOR3*out,
D3DXVECTOR3*min,
D3DXVECTOR3*max）;
//
//Conversion
//
DWORDFtoDw（floatf）;
}
#endif//__d3dUtilityH__
Stencilmirrorshadow.cpp
//////////////////////////////////////////////////////////////////////////////////////////////////
//
//File:
stencilmirrorshadow.cpp
//
//Author:
FrankLuna（C）AllRightsReserved
//
//System:
AMDAthlon1800+XP,512DDR,Geforce3,WindowsXP,MSVC++7.0
//
//Desc:
Demonstratesmirrorsandshadowswithstencils.Usethearrowkeys
//andthe'A'and'S'keytonavigatethesceneandtranslatetheteapot.
//
//////////////////////////////////////////////////////////////////////////////////////////////////
#include"d3dUtility.h"
//
//Globals
//
IDirect3DDevice9*Device=0;
constintWidth=640;
constintHeight=480;
IDirect3DVertexBuffer9*VB=0;
IDirect3DTexture9*FloorTex=0;
IDirect3DTexture9*WallTex=0;
IDirect3DTexture9*MirrorTex=0;
D3DMATERIAL9FloorMtrl=d3d:
:
WHITE_MTRL;
D3DMATERIAL9WallMtrl=d3d:
:
WHITE_MTRL;
D3DMATERIAL9MirrorMtrl=d3d:
:
WHITE_MTRL;
ID3DXMesh*Teapot=0;
D3DXVECTOR3TeapotPosition（0.0f,3.0f,-7.5f）;
D3DMATERIAL9TeapotMtrl=d3d:
:
YELLOW_MTRL;
voidRenderScene（）;
voidRenderMirror（）;
voidRenderShadow（）;
//
//ClassesandStructures
//
structVertex
{
Vertex（）{}
Vertex（floatx,floaty,floatz,
floatnx,floatny,float
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