求助!基于MFC的DX8程序用LPDIRECT3DTEXTURE8画图片,实际画出来

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实际的大小比原始的大.特求助于大家.
不多说,上代码.

1. 
   
2. // D3DTestDlg.cpp : implementation file
   
3. //
   
4. 
   
5. #include "stdafx.h"
   
6. #include "D3DTest.h"
   
7. #include "D3DTestDlg.h"
   
8. #include "d3d8.h"
   
9. #include "d3dx8math.h"
   
10. 
    
11. #ifdef _DEBUG
    
12. #define new DEBUG_NEW
    
13. #undef THIS_FILE
    
14. static char THIS_FILE[] = __FILE__;
    
15. #endif
    
16. 
    
17. /////////////////////////////////////////////////////////////////////////////
    
18. // CAboutDlg dialog used for App About
    
19. 
    
20. LPDIRECT3D8                        g_pD3D = NULL;
    
21. LPDIRECT3DDEVICE8        g_pDevice = NULL;
    
22. LPD3DXSPRITE                g_pSprite = NULL;
    
23. D3DPRESENT_PARAMETERS g_Present;
    
24. LPDIRECT3DTEXTURE8        g_pTexture = NULL;
    
25. 
    
26. class CAboutDlg : public CDialog
    
27. {
    
28. public:
    
29.         CAboutDlg();
    
30. 
    
31. // Dialog Data
    
32.         //{{AFX_DATA(CAboutDlg)
    
33.         enum { IDD = IDD_ABOUTBOX };
    
34.         //}}AFX_DATA
    
35. 
    
36.         // ClassWizard generated virtual function overrides
    
37.         //{{AFX_VIRTUAL(CAboutDlg)
    
38.         protected:
    
39.         virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
    
40.         //}}AFX_VIRTUAL
    
41. 
    
42. // Implementation
    
43. protected:
    
44.         //{{AFX_MSG(CAboutDlg)
    
45.         //}}AFX_MSG
    
46.         DECLARE_MESSAGE_MAP()
    
47. };
    
48. 
    
49. CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
    
50. {
    
51.         //{{AFX_DATA_INIT(CAboutDlg)
    
52.         //}}AFX_DATA_INIT
    
53. }
    
54. 
    
55. void CAboutDlg::DoDataExchange(CDataExchange* pDX)
    
56. {
    
57.         CDialog::DoDataExchange(pDX);
    
58.         //{{AFX_DATA_MAP(CAboutDlg)
    
59.         //}}AFX_DATA_MAP
    
60. }
    
61. 
    
62. BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
    
63.         //{{AFX_MSG_MAP(CAboutDlg)
    
64.                 // No message handlers
    
65.         //}}AFX_MSG_MAP
    
66. END_MESSAGE_MAP()
    
67. 
    
68. /////////////////////////////////////////////////////////////////////////////
    
69. // CD3DTestDlg dialog
    
70. 
    
71. CD3DTestDlg::CD3DTestDlg(CWnd* pParent /*=NULL*/)
    
72.         : CDialog(CD3DTestDlg::IDD, pParent)
    
73. {
    
74.         //{{AFX_DATA_INIT(CD3DTestDlg)
    
75.                 // NOTE: the ClassWizard will add member initialization here
    
76.         //}}AFX_DATA_INIT
    
77.         // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    
78.         m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    
79. }
    
80. 
    
81. void CD3DTestDlg::DoDataExchange(CDataExchange* pDX)
    
82. {
    
83.         CDialog::DoDataExchange(pDX);
    
84.         //{{AFX_DATA_MAP(CD3DTestDlg)
    
85.         DDX_Control(pDX, IDC_STA_SHOW, m_staShow);
    
86.         //}}AFX_DATA_MAP
    
87. }
    
88. 
    
89. BEGIN_MESSAGE_MAP(CD3DTestDlg, CDialog)
    
90.         //{{AFX_MSG_MAP(CD3DTestDlg)
    
91.         ON_WM_SYSCOMMAND()
    
92.         ON_WM_PAINT()
    
93.         ON_WM_QUERYDRAGICON()
    
94.         ON_WM_TIMER()
    
95.         //}}AFX_MSG_MAP
    
96. END_MESSAGE_MAP()
    
97. 
    
98. /////////////////////////////////////////////////////////////////////////////
    
99. // CD3DTestDlg message handlers
    
100. 
     
101. BOOL CD3DTestDlg::OnInitDialog()
     
102. {
     
103.         CDialog::OnInitDialog();
     
104. 
     
105.         // Add "About..." menu item to system menu.
     
106. 
     
107.         // IDM_ABOUTBOX must be in the system command range.
     
108.         ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
     
109.         ASSERT(IDM_ABOUTBOX < 0xF000);
     
110. 
     
111.         CMenu* pSysMenu = GetSystemMenu(FALSE);
     
112.         if (pSysMenu != NULL)
     
113.         {
     
114.                 CString strAboutMenu;
     
115.                 strAboutMenu.LoadString(IDS_ABOUTBOX);
     
116.                 if (!strAboutMenu.IsEmpty())
     
117.                 {
     
118.                         pSysMenu->AppendMenu(MF_SEPARATOR);
     
119.                         pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
     
120.                 }
     
121.         }
     
122. 
     
123.         // Set the icon for this dialog.  The framework does this automatically
     
124.         //  when the application's main window is not a dialog
     
125.         SetIcon(m_hIcon, TRUE);                        // Set big icon
     
126.         SetIcon(m_hIcon, FALSE);                // Set small icon
     
127.        
     
128.         // TODO: Add extra initialization here
     
129.         this->InitD3D(m_staShow.GetSafeHwnd());
     
130.         if (FAILED(::D3DXCreateTextureFromFile(g_pDevice, "Test.bmp", &g_pTexture)))
     
131.         {
     
132.                 int a = 0;
     
133.                 ++a;
     
134.         }
     
135. 
     
136.         this->SetTimer(1001, 8, NULL);
     
137.         return TRUE;  // return TRUE  unless you set the focus to a control
     
138. }
     
139. 
     
140. void CD3DTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
     
141. {
     
142.         if ((nID & 0xFFF0) == IDM_ABOUTBOX)
     
143.         {
     
144.                 CAboutDlg dlgAbout;
     
145.                 dlgAbout.DoModal();
     
146.         }
     
147.         else
     
148.         {
     
149.                 CDialog::OnSysCommand(nID, lParam);
     
150.         }
     
151. }
     
152. 
     
153. // If you add a minimize button to your dialog, you will need the code below
     
154. //  to draw the icon.  For MFC applications using the document/view model,
     
155. //  this is automatically done for you by the framework.
     
156. 
     
157. void CD3DTestDlg::OnPaint()
     
158. {
     
159.         if (IsIconic())
     
160.         {
     
161.                 CPaintDC dc(this); // device context for painting
     
162. 
     
163.                 SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
     
164. 
     
165.                 // Center icon in client rectangle
     
166.                 int cxIcon = GetSystemMetrics(SM_CXICON);
     
167.                 int cyIcon = GetSystemMetrics(SM_CYICON);
     
168.                 CRect rect;
     
169.                 GetClientRect(&rect);
     
170.                 int x = (rect.Width() - cxIcon + 1) / 2;
     
171.                 int y = (rect.Height() - cyIcon + 1) / 2;
     
172. 
     
173.                 // Draw the icon
     
174.                 dc.DrawIcon(x, y, m_hIcon);
     
175.         }
     
176.         else
     
177.         {
     
178.                 CDialog::OnPaint();
     
179.         }
     
180. }
     
181. 
     
182. // The system calls this to obtain the cursor to display while the user drags
     
183. //  the minimized window.
     
184. HCURSOR CD3DTestDlg::OnQueryDragIcon()
     
185. {
     
186.         return (HCURSOR) m_hIcon;
     
187. }
     
188. 
     
189. bool CD3DTestDlg::InitD3D(HWND hWnd)
     
190. {
     
191.         g_pD3D = Direct3DCreate8(D3D_SDK_VERSION);
     
192.        
     
193.         HRESULT hr;
     
194.         D3DDISPLAYMODE d3ddm;
     
195.         hr = g_pD3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm);
     
196.         if(FAILED(hr))
     
197.                 return false;
     
198.        
     
199.         //D3DPRESENT_PARAMETERS d3dpp;
     
200.         ZeroMemory(&g_Present, sizeof(g_Present));
     
201.         g_Present.BackBufferFormat = d3ddm.Format;
     
202.         g_Present.BackBufferCount = 1;
     
203.         g_Present.MultiSampleType = D3DMULTISAMPLE_NONE;
     
204.         g_Present.SwapEffect = D3DSWAPEFFECT_DISCARD;
     
205.         g_Present.hDeviceWindow = hWnd;
     
206.         g_Present.Windowed = TRUE;
     
207.         g_Present.EnableAutoDepthStencil = TRUE;
     
208.         g_Present.AutoDepthStencilFormat = D3DFMT_D24S8;
     
209.         g_Present.Flags = 0;
     
210.         g_Present.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
     
211.         //d3dpp.FullScreen_PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
     
212.        
     
213.         hr = g_pD3D->CreateDevice(D3DADAPTER_DEFAULT,
     
214.                 D3DDEVTYPE_HAL,
     
215.                 hWnd,
     
216.                 D3DCREATE_SOFTWARE_VERTEXPROCESSING,
     
217.                 &g_Present,
     
218.                 &g_pDevice);
     
219.        
     
220.         if(FAILED(hr))
     
221.                 return false;
     
222.        
     
223.         if (FAILED(D3DXCreateSprite(g_pDevice, &g_pSprite)))
     
224.                 return false;
     
225. 
     
226.         if (FAILED(D3DXCreateSprite(g_pDevice, &g_pSprite)))
     
227.                 return false;
     
228.        
     
229.         return true;
     
230. }
     
231. 
     
232. void CD3DTestDlg::OnTimer(UINT nIDEvent)
     
233. {
     
234.         // TODO: Add your message handler code here and/or call default
     
235.         if (1001 == nIDEvent)
     
236.         {
     
237.                 this->OnRender();
     
238.         }
     
239.         CDialog::OnTimer(nIDEvent);
     
240. }
     
241. 
     
242. int CD3DTestDlg::IfDeviceLost()
     
243. {
     
244.         HRESULT hr;
     
245.         if (FAILED(hr = g_pDevice->TestCooperativeLevel()))
     
246.         {
     
247.                 if (D3DERR_DEVICELOST == hr)
     
248.                         return 1;
     
249.                
     
250.                 if (D3DERR_DEVICENOTRESET)
     
251.                         return 2;
     
252.         }
     
253.         return 0;
     
254. }
     
255. 
     
256. bool CD3DTestDlg::ResetDevice()
     
257. {
     
258.         if (FAILED(g_pDevice->Reset(&g_Present)))
     
259.         {
     
260.                 return false;
     
261.         }
     
262.         DWORD current;
     
263.         g_pDevice->GetRenderState(D3DRS_AMBIENT, &current);
     
264.         if (current != D3DCOLOR_ARGB(255, 255, 255, 255))
     
265.                 g_pDevice->SetRenderState(D3DRS_AMBIENT, D3DCOLOR_ARGB(255, 255, 255, 255));
     
266.        
     
267.         return true;
     
268. }
     
269. 
     
270. void CD3DTestDlg::OnRender()
     
271. {
     
272.         if (NULL == g_pDevice)
     
273.         {
     
274.                 return;
     
275.         }
     
276. 
     
277.         int nRet = this->IfDeviceLost();
     
278.         if (nRet == 1)
     
279.         {
     
280.                 return;
     
281.         }
     
282.         else if (nRet == 2)
     
283.         {
     
284. 
     
285.                 return;
     
286.         }
     
287. 
     
288.         g_pDevice->BeginScene();
     
289.         g_pDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(255, 255, 255, 255), 1.0f, 0);
     
290. 
     
291.         if (g_pSprite && g_pTexture)
     
292.         {
     
293.                 D3DXVECTOR2 dvTran(0.0f, 0.0f);
     
294.                 g_pSprite->Draw(g_pTexture, NULL, NULL, NULL, 0.0f, &dvTran, 0xFFFFFFFF);
     
295.         }
     
296. 
     
297.         g_pDevice->EndScene();
     
298.         g_pDevice->Present(NULL, NULL, NULL, NULL);
     
299. }
     

复制代码

无心大师

因为图片大小不是2的幂