13行，#define?D3DFVF_CUSTOMVERTEX?(D3DFVF_XYZRHW?|?D3DFVF_DIFFUSE)是使用變換過的頂點格式，意思是在執行渲染流水線的過程中，不作頂點變換。換言之，可以直接用屏幕象素的單位大小來定義頂點的坐標。再換言之，就是說用這種頂點格式，可以簡單的實現Overlay（不知道怎么翻譯這個單詞）
??1
#include?
<
D3DX9.h
>
??2
#include?
<
string
>
??3
typedef?std::
string
?String;
??4
#define
?SAFE_RELEASE(o)?{if(o){o->Release();o?=?0;}}
??5
??6
??7
LPDIRECT3D9?g_pD3D?
=
?
0
;????????????????
//
?D3D?Driver
??8
LPDIRECT3DDEVICE9?g_pd3dDevice?
=
?
0
;????
//
?D3D?設備
??9
D3DCAPS9?g_Caps?
=
?
{(D3DDEVTYPE)
0
}
;????
//
?D3D?的帽子
?10
LPDIRECT3DVERTEXBUFFER9?g_pVB?
=
?
0
;????
//
?頂點緩沖區
?11
?12
//
?頂點定義，使用變換過的頂點坐標格式
?13
#define
?D3DFVF_CUSTOMVERTEX?(D3DFVF_XYZRHW?|?D3DFVF_DIFFUSE)
?14
struct
?CUSTOMVERTEX
?15
{
?16
 ????D3DXVECTOR4?position;
?17
????D3DCOLOR?color;
?18
 }
;
?19
?20
//
?錯誤記錄
?21
void
?D3DErr(String?strMsg)
?22
{
?23
????MessageBox(
0
?,?strMsg.c_str()?,?
"
錯誤
"
?,?MB_OK);
?24
}
?25
?26
//
?初始化頂點緩沖區
?27
HRESULT?InitVB()
?28
{
?29
????
//
?創建頂點緩沖區
?30
????
if
(FAILED(g_pd3dDevice
->
CreateVertexBuffer(
3
?
*
?
sizeof
(CUSTOMVERTEX)?,?
0
?,?D3DFVF_CUSTOMVERTEX?,?D3DPOOL_DEFAULT?,?
&
g_pVB?,?
0
)))
?31
????????
return
?E_FAIL;
?32
?33
????CUSTOMVERTEX?
*
pVertecies;
?34
????
//
?鎖定緩沖區
?35
????
if
(SUCCEEDED(g_pVB
->
Lock(
0
?,?
3
?
*
?
sizeof
(CUSTOMVERTEX)?,?(
void
**
)
&
pVertecies?,?
0
)))
?36
 ????
{
?37
????????pVertecies[
0
].position?
=
?D3DXVECTOR4(
0
?,?
0
?,?
0.5
?,?
1
);
?38
????????pVertecies[
1
].position?
=
?D3DXVECTOR4(
512
?,?
0
?,?
0.5
?,?
1
);
?39
????????pVertecies[
2
].position?
=
?D3DXVECTOR4(
0
?,?
512
?,?
0.5
?,?
1
);
?40
?41
????????pVertecies[
0
].color?
=
?D3DCOLOR_XRGB(
255
?,?
0
?,?
0
);
?42
????????pVertecies[
1
].color?
=
?D3DCOLOR_XRGB(
0
?,?
255
?,?
0
);
?43
????????pVertecies[
2
].color?
=
?D3DCOLOR_XRGB(
0
?,?
0
?,?
255
);
?44
?45
????????g_pVB
->
Unlock();
?46
 ????}
?47
????
else
?48
????
{
?49
????????
return
?E_FAIL;
?50
????}
?51
????
return
?S_OK;
?52
}
?53
?54
//
?初始化?D3D?設備
?55
HRESULT?InitD3D(HWND?hWnd)
?56
{
?57
????
//
?創建?D3D?Driver
?58
????
if
(NULL?
==
?(g_pD3D?
=
?Direct3DCreate9(D3D_SDK_VERSION)))
?59
????
{
?60
????????D3DErr(
"
無法創建Direct3D9設備
"
);
?61
????????
return
?E_FAIL;
?62
????}
?63
????
//
?獲取當前顯示模式
?64
????D3DDISPLAYMODE?d3ddm;
?65
????
if
(FAILED(g_pD3D
->
GetAdapterDisplayMode(D3DADAPTER_DEFAULT?,?
&
d3ddm)))
?66
????
{
?67
????????D3DErr(
"
無法獲取D3D顯示器模式
"
);
?68
????????
return
?E_FAIL;
?69
????}
?70
?71
????
//
?獲取窗口的大小
?72
????RECT?rect;
?73
????GetClientRect(hWnd?,?
&
rect);
?74
?75
????
//
?填充參數
?76
????D3DPRESENT_PARAMETERS?d3dpp;
?77
????memset(
&
d3dpp?,?
0
?,?
sizeof
(d3dpp));
?78
????d3dpp.BackBufferFormat?
=
?d3ddm.Format;
?79
????d3dpp.BackBufferWidth?
=
?rect.right?
-
?rect.left;
?80
????d3dpp.BackBufferHeight?
=
?rect.bottom?
-
?rect.top;
?81
????d3dpp.SwapEffect?
=
?D3DSWAPEFFECT_DISCARD;
?82
????d3dpp.Windowed?
=
?
true
;
?83
?84
????
//
?獲取帽子
?85
????
if
(FAILED(g_pD3D
->
GetDeviceCaps(D3DADAPTER_DEFAULT?,?D3DDEVTYPE_HAL?,?
&
g_Caps)))
?86
????
{
?87
????????D3DErr(
"
獲取D3D?帽子時發生錯誤
"
);
?88
????????
return
?E_FAIL;
?89
????}
?90
?91
????
//
?創建D3D設備
?92
????
if
(FAILED(g_pD3D
->
CreateDevice(D3DADAPTER_DEFAULT
?93
????????,?D3DDEVTYPE_HAL
?94
????????,?hWnd
?95
????????
//
?檢查是否支持硬件頂點處理
?96
????????,?g_Caps.DevCaps?
&
?D3DDEVCAPS_HWTRANSFORMANDLIGHT?
?
?D3DCREATE_HARDWARE_VERTEXPROCESSING?:?D3DCREATE_SOFTWARE_VERTEXPROCESSING
?97
????????,?
&
d3dpp
?98
????????,?
&
g_pd3dDevice
?99
????????)
100
????????))
101
????
{
102
????????D3DErr(
"
創建D3D設備時發生錯誤
"
);
103
????????
return
?E_FAIL;
104
????}
105
106
????
//
?創建頂點緩沖區
107
????
if
(FAILED(InitVB()))
108
????????
return
?E_FAIL;
109
????
return
?S_OK;
110
}
111
112
//
?清空所有占用的資源
113
void
?CleanUp()
114
{
115
????SAFE_RELEASE(g_pVB);
116
????SAFE_RELEASE(g_pd3dDevice);
117
????SAFE_RELEASE(g_pD3D);
118
}
119
120
//
?渲染場景
121
void
?Render()
122
{
123
????
if
(g_pd3dDevice)
124
????
{
125
????????
//
?清空場景
126
????????g_pd3dDevice
->
Clear(
0
?,?
0
?,?D3DCLEAR_TARGET?,?D3DCOLOR_XRGB(
0
?,?
0
?,?
255
)?,?
1
?,?
0
);
127
????????
//
?開始渲染
128
????????
if
(SUCCEEDED(g_pd3dDevice
->
BeginScene()))
129
????????
{
130
????????????g_pd3dDevice
->
SetRenderState(D3DRS_LIGHTING?,?FALSE);
131
????????????g_pd3dDevice
->
SetStreamSource(
0
?,?g_pVB?,?
0
?,?
sizeof
(CUSTOMVERTEX));
132
????????????g_pd3dDevice
->
SetFVF(D3DFVF_CUSTOMVERTEX);
133
????????????g_pd3dDevice
->
DrawPrimitive(D3DPT_TRIANGLELIST?,?
0
?,?
1
);
134
????????????g_pd3dDevice
->
EndScene();
135
????????}
136
????????
//
?顯示
137
????????g_pd3dDevice
->
Present(
0
?,?
0
?,?
0
?,?
0
);
138
????}
139
}
140
141
//
?消息處理
142
LRESULT?WINAPI?MsgProc(HWND?hWnd?,?UINT?message?,?WPARAM?wParam?,?LPARAM?lParam)
143
{
144
????
switch
(message)
145
????
{
146
????
case
?WM_DESTROY:
147
????????CleanUp();
148
????????PostQuitMessage(
0
);
149
????????
break
;
150
????}
151
????
return
?::DefWindowProc(hWnd,?message?,?wParam?,?lParam);
152
}
153
154
//
?Windows?入口
155
int
?WINAPI?WinMain(IN?HINSTANCE?hInstance,?IN?HINSTANCE?hPrevInstance,?IN?LPSTR?lpCmdLine,?IN?
int
?nShowCmd?)
156
{
157
????WNDCLASS?wndClass;
158
????memset(
&
wndClass?,?
0
?,?
sizeof
(wndClass));
159
????wndClass.hInstance?
=
?hInstance;
160
????wndClass.lpszClassName?
=
?
"
Tutorial02
"
;
161
????wndClass.lpfnWndProc?
=
?MsgProc;
162
????RegisterClass(
&
wndClass);
163
164
????
//
?創建窗口
165
????HWND?hWnd?
=
?CreateWindow(
"
Tutorial02
"
?,?
"
Tutorial02?Vertex?Buffer
"
?
166
????????,?WS_OVERLAPPEDWINDOW?,?
0
?,?
0
?,?
512
?,
512
?,?GetDesktopWindow()
167
????????,?
0
?,?wndClass.hInstance?,?
0
);
168
????
//
?顯示窗口
169
????ShowWindow(hWnd?,?SW_SHOWDEFAULT);
170
????UpdateWindow(hWnd);
171
172
????
//
?初始化?D3D?設備
173
????
if
(SUCCEEDED(InitD3D(hWnd)))
174
????
{
175
????????
//
?消息處理循環
176
????????MSG?msg;
177
????????memset(
&
msg?,?
0
?,?
sizeof
(msg));
178
????????
while
(msg.message?
!=
?WM_QUIT)
179
????????
{
180
????????????
if
(PeekMessage(
&
msg?,?
0
?,?
0
?,?
0
?,?PM_REMOVE))
181
????????????
{
182
????????????????TranslateMessage(
&
msg);
183
????????????????DispatchMessage(
&
msg);
184
????????????}
185
????????????
else
186
????????????
{
187
????????????????Render();
188
????????????}
189
????????}
190
????}
191
????
//
?清空場景
192
????CleanUp();
193
194
????UnregisterClass(
"
Tutorial02
"
?,?wndClass.hInstance);
195
196
????
return
?
0
;
197
}
?
|