SDL2是跨平台的图形库，在windows上使用的是directx的surface来实现的，surface可以用来开发视频播放之类的。
贴代码.
1 #include <windows.h>
2 #include <d3d9.h>
3
4 #pragma comment(lib, "d3d9.lib")
5
6
7 /*常量定义*/
8 #define WINDOW_WIDTH 640 //窗口尺寸
9 #define WINDOW_HEIGHT 480
10
11
12 /*变量定义*/
13 HWND m_hwnd;
14
15 IDirect3DDevice9* m_device; //d3d设备
16 IDirect3DSurface9* m_surface; //directx表面
17 D3DSURFACE_DESC m_surfacedesc; //表面描述
18
19 LRESULT CALLBACK sWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
20 {
21 switch (msg)
22 {
23 case WM_PAINT:
24 //draw();
25 break;
26 case WM_KEYDOWN:
27 switch (wParam)
28 {
29 case VK_ESCAPE:
30 SendMessage(hwnd, WM_CLOSE, 0, 0);
31 break;
32 }
33 break;
34 case WM_DESTROY:
35
36 PostQuitMessage(0);
37 break;
38 }
39 return DefWindowProc(hwnd, msg, wParam, lParam);
40 }
41
42 void draw()
43 {
44 //渲染到离屏表面
45 //取得指向内存区的指针
46 D3DLOCKED_RECT lockedRect;
47 m_surface->LockRect(&lockedRect, 0, 0);
48
49 DWORD* imageData = (DWORD*)lockedRect.pBits;
50
51 for (UINT i = 0; i < m_surfacedesc.Height; i++)
52 {
53 for (UINT j = 0; j < m_surfacedesc.Width; j++)
54 {
55 UINT index = i * lockedRect.Pitch / 4 + j;
56 imageData[index] = 0xffffff00;
57 }
58 }
59
60 m_surface->UnlockRect();
61
62
63 //渲染
64 m_device->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0xffffffff, 1.0f, 0);
65 m_device->BeginScene();
66
67 IDirect3DSurface9 * pBackBuffer = NULL;
68
69 m_device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &pBackBuffer);
70 m_device->StretchRect(m_surface, NULL, pBackBuffer, NULL, D3DTEXF_LINEAR);
71
72 m_device->EndScene();
73 m_device->Present(0, 0, 0, 0);
74
75 pBackBuffer->Release();
76 }
77
78 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
79 {
80 WNDCLASSEX winClass;
81
82 winClass.lpszClassName = "DirectSurface";
83 winClass.cbSize = sizeof(WNDCLASSEX);
84 winClass.style = CS_HREDRAW | CS_VREDRAW;
85 winClass.lpfnWndProc = sWndProc;
86 winClass.hInstance = hInstance;
87 winClass.hIcon = NULL;
88 winClass.hIconSm = NULL;
89 winClass.hCursor = LoadCursor(NULL, IDC_ARROW);
90 winClass.hbrBackground = NULL;
91 winClass.lpszMenuName = NULL;
92 winClass.cbClsExtra = 0;
93 winClass.cbWndExtra = 0;
94
95 if (!RegisterClassEx(&winClass))
96 {
97 MessageBox(NULL, TEXT("This program requires Windows NT!"), "error", MB_ICONERROR);
98 return 1;
99 }
100
101 m_hwnd = CreateWindowEx(NULL,
102 "DirectSurface", // window class name
103 "Draw Surface", // window caption
104 WS_OVERLAPPEDWINDOW, // window style
105 CW_USEDEFAULT, // initial x position
106 CW_USEDEFAULT, // initial y position
107 WINDOW_WIDTH, // initial x size
108 WINDOW_HEIGHT, // initial y size
109 NULL, // parent window handle
110 NULL, // window menu handle
111 hInstance, // program instance handle
112 NULL); // creation parameters
113
114 //初始化directx
115 D3DDEVTYPE deviceType = D3DDEVTYPE_HAL;
116
117 HRESULT hr = 0;
118
119 // Step 1: Create the IDirect3D9 object.
120
121 IDirect3D9* d3d9 = 0;
122 d3d9 = Direct3DCreate9(D3D_SDK_VERSION);
123
124 if (!d3d9)
125 {
126 ::MessageBox(0, "Direct3DCreate9() - FAILED", 0, 0);
127 return 0;
128 }
129
130 // Step 2: Check for hardware vp.
131
132 D3DCAPS9 caps;
133 d3d9->GetDeviceCaps(D3DADAPTER_DEFAULT, deviceType, &caps);
134
135 int vp = 0;
136 if (caps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT)
137 vp = D3DCREATE_HARDWARE_VERTEXPROCESSING;
138 else
139 vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
140
141 // Step 3: Fill out the D3DPRESENT_PARAMETERS structure.
142
143 D3DPRESENT_PARAMETERS d3dpp;
144 d3dpp.BackBufferWidth = WINDOW_WIDTH;
145 d3dpp.BackBufferHeight = WINDOW_HEIGHT;
146 d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8;
147 d3dpp.BackBufferCount = 1;
148 d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
149 d3dpp.MultiSampleQuality = 0;
150 d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
151 d3dpp.hDeviceWindow = m_hwnd;
152 d3dpp.Windowed = true;
153 d3dpp.EnableAutoDepthStencil = true;
154 d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;
155 d3dpp.Flags = 0;
156 d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
157 d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
158
159 // Step 4: Create the device.
160
161 hr = d3d9->CreateDevice(
162 D3DADAPTER_DEFAULT, // primary adapter
163 deviceType, // device type
164 m_hwnd, // window associated with device
165 vp, // vertex processing
166 &d3dpp, // present parameters
167 &m_device); // return created device
168
169 if (FAILED(hr))
170 {
171 // try again using a 16-bit depth buffer
172 d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
173
174 hr = d3d9->CreateDevice(
175 D3DADAPTER_DEFAULT,
176 deviceType,
177 m_hwnd,
178 vp,
179 &d3dpp,
180 &m_device);
181
182 if (FAILED(hr))
183 {
184 d3d9->Release(); // done with d3d9 object
185 ::MessageBox(0, "CreateDevice() - FAILED", 0, 0);
186 return 0;
187 }
188 }
189
190 d3d9->Release(); // done with d3d9 object
191
192 m_device->CreateOffscreenPlainSurface(WINDOW_WIDTH, WINDOW_HEIGHT, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, &m_surface, NULL);
193 m_surface->GetDesc(&m_surfacedesc);
194
195
196 ShowWindow(m_hwnd, SW_SHOW);
197 UpdateWindow(m_hwnd);
198
199 MSG msg;
200 ZeroMemory(&msg, sizeof(msg));
201
202 while (TRUE)
203 {
204 if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
205 {
206
207 if (msg.message == WM_QUIT)
208 break;
209
210 // translate any accelerator keys
211 TranslateMessage(&msg);
212
213 // send the message to the window proc
214 DispatchMessage(&msg);
215 } // end while
216
217 draw();
218 }
219
220 //释放资源
221 m_device->Release();
222 if (m_surface)
223 m_surface->Release();
224
225 return 0;
226 }
时间： 2024-11-10 15:24:06