1 //桌面 透明 三角形 分层窗口 DX
2 //IDirect3DSurface9 GetDC UpdateLayeredWindow
3
4 #include <Windows.h>
5 #include <mmsystem.h>
6 #include <d3dx9.h>
7 #pragma warning( disable : 4996 )
8 #include <strsafe.h>
9 #pragma warning( default : 4996 )
10
11 //include path $(DXSDK_DIR)Include;
12 //library path $(DXSDK_DIR)Lib\x86
13 //library d3dx9.lib d3d9.lib Winmm.lib
14
15
16 LPDIRECT3D9 g_pD3D = NULL;
17 LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
18 LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;
19
20 HWND g_hWnd = NULL;
21 IDirect3DSurface9* g_pkRenderTarget = NULL;
22 IDirect3DSurface9* g_pkOffscreenPlainSurface = NULL;
23
24 struct CUSTOMVERTEX
25 {
26 FLOAT x, y, z;
27 DWORD color;
28 };
29
30 #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE)
31
32 HRESULT InitD3D(HWND hWnd)
33 {
34 if (NULL == (g_pD3D = Direct3DCreate9(D3D_SDK_VERSION)))
35 {
36 return E_FAIL;
37 }
38
39 D3DPRESENT_PARAMETERS d3dpp;
40 ZeroMemory(&d3dpp, sizeof(d3dpp));
41 d3dpp.Windowed = TRUE;
42 d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
43 d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
44
45 if (FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pd3dDevice)))
46 {
47 return E_FAIL;
48 }
49
50 g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
51 g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, FALSE);
52
53 return S_OK;
54 }
55
56 HRESULT InitGeometry()
57 {
58 CUSTOMVERTEX g_Vertices[] =
59 {
60 { -1.0f, -1.0f, 0.0f, 0xffff0000, },
61 { 1.0f, -1.0f, 0.0f, 0xff0000ff, },
62 { 0.0f, 1.0f, 0.0f, 0xffffffff, },
63 };
64
65 if (FAILED(g_pd3dDevice->CreateVertexBuffer(3 * sizeof(CUSTOMVERTEX), 0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL)))
66 {
67 return E_FAIL;
68 }
69
70 VOID* pVertices;
71 if (FAILED(g_pVB->Lock(0, sizeof(g_Vertices), (void**)&pVertices, 0)))
72 {
73 return E_FAIL;
74 }
75 memcpy(pVertices, g_Vertices, sizeof(g_Vertices));
76 g_pVB->Unlock();
77
78 return S_OK;
79 }
80
81 VOID Cleanup()
82 {
83 if (g_pVB != NULL)
84 {
85 g_pVB->Release();
86 }
87 if (g_pd3dDevice != NULL)
88 {
89 g_pd3dDevice->Release();
90 }
91 if (g_pD3D != NULL)
92 {
93 g_pD3D->Release();
94 }
95 }
96
97 VOID SetupMatrices()
98 {
99 D3DXMATRIXA16 matWorld;
100 UINT iTime = timeGetTime() % 1000;
101 FLOAT fAngle = iTime * (2.0f * D3DX_PI) / 1000.0f;
102 D3DXMatrixRotationY(&matWorld, fAngle);
103 g_pd3dDevice->SetTransform(D3DTS_WORLD, &matWorld);
104
105 D3DXVECTOR3 vEyePt(0.0f, 3.0f, -5.0f);
106 D3DXVECTOR3 vLookatPt(0.0f, 0.0f, 0.0f);
107 D3DXVECTOR3 vUpVec(0.0f, 1.0f, 0.0f);
108 D3DXMATRIXA16 matView;
109 D3DXMatrixLookAtLH(&matView, &vEyePt, &vLookatPt, &vUpVec);
110 g_pd3dDevice->SetTransform(D3DTS_VIEW, &matView);
111
112 D3DXMATRIXA16 matProj;
113 D3DXMatrixPerspectiveFovLH(&matProj, D3DX_PI / 4, 1.0f, 1.0f, 100.0f);
114 g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &matProj);
115
116 }
117
118 VOID Render()
119 {
120
121 RECT kRect;
122 GetWindowRect(g_hWnd, &kRect);
123
124 UINT uiWndWidth = kRect.right - kRect.left;
125 UINT uiWndHeight = kRect.bottom - kRect.top;
126
127 if (!g_pkOffscreenPlainSurface)
128 {
129 g_pd3dDevice->CreateOffscreenPlainSurface(uiWndWidth, uiWndHeight, D3DFMT_X8R8G8B8, D3DPOOL_SYSTEMMEM, &g_pkOffscreenPlainSurface, 0);
130 g_pd3dDevice->CreateRenderTarget(uiWndWidth, uiWndHeight, D3DFMT_X8R8G8B8, D3DMULTISAMPLE_NONE, 0, true, &g_pkRenderTarget, 0);
131 }
132 else
133 {
134 D3DSURFACE_DESC kDesc;
135 g_pkOffscreenPlainSurface->GetDesc(&kDesc);
136
137 if (kDesc.Width != uiWndWidth || kDesc.Width != uiWndHeight)
138 {
139 g_pkOffscreenPlainSurface->Release();
140 g_pkRenderTarget->Release();
141 g_pd3dDevice->CreateOffscreenPlainSurface(uiWndWidth, uiWndHeight, D3DFMT_X8R8G8B8, D3DPOOL_SYSTEMMEM, &g_pkOffscreenPlainSurface, 0);
142 g_pd3dDevice->CreateRenderTarget(uiWndWidth, uiWndHeight, D3DFMT_X8R8G8B8, D3DMULTISAMPLE_NONE, 0, true, &g_pkRenderTarget, 0);
143 }
144 }
145
146 if (!g_pkOffscreenPlainSurface || !g_pkRenderTarget)
147 {
148 return;
149 }
150
151 HRESULT hr = g_pd3dDevice->SetRenderTarget(0, g_pkRenderTarget);
152 g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
153
154 if (SUCCEEDED(g_pd3dDevice->BeginScene()))
155 {
156 SetupMatrices();
157
158 g_pd3dDevice->SetStreamSource(0, g_pVB, 0, sizeof(CUSTOMVERTEX));
159 g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
160 g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 1);
161
162 g_pd3dDevice->EndScene();
163 }
164
165 g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
166
167 hr = g_pd3dDevice->GetRenderTargetData(g_pkRenderTarget, g_pkOffscreenPlainSurface);
168
169 HDC hDC = 0;
170 //g_pkRenderTarget->GetDC(&hDC);
171 g_pkOffscreenPlainSurface->GetDC(&hDC);
172
173 POINT kPoint = { 0, 0 };
174 SIZE kSize = { uiWndWidth, uiWndHeight };
175
176 BLENDFUNCTION kBlend;
177 kBlend.AlphaFormat = AC_SRC_ALPHA;
178 kBlend.SourceConstantAlpha = 255;
179 kBlend.BlendFlags = 0;
180 kBlend.BlendOp = AC_SRC_OVER;
181
182 UpdateLayeredWindow(g_hWnd, 0, &kPoint, &kSize, hDC, &kPoint, 0, &kBlend, ULW_ALPHA);
183
184 g_pkOffscreenPlainSurface->ReleaseDC(hDC);
185 //g_pkRenderTarget->ReleaseDC(hDC);
186 }
187
188 LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
189 {
190 switch (msg)
191 {
192 case WM_DESTROY:
193 Cleanup();
194 PostQuitMessage(0);
195 return 0;
196 }
197
198 return DefWindowProc(hWnd, msg, wParam, lParam);
199 }
200
201 INT WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, INT)
202 {
203 UNREFERENCED_PARAMETER(hInst);
204
205 WNDCLASSEX wc =
206 {
207 sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, L"D3D Tutorial", NULL
208 };
209 RegisterClassEx(&wc);
210
211 g_hWnd = CreateWindowEx(WS_EX_LAYERED, L"D3D Tutorial", L"D3D Tutorial 03: Matrices", WS_POPUP | WS_THICKFRAME, 100, 100, 512, 512, NULL, NULL, wc.hInstance, NULL);
212
213 if (SUCCEEDED(InitD3D(g_hWnd)))
214 {
215 if (SUCCEEDED(InitGeometry()))
216 {
217 ShowWindow(g_hWnd, SW_SHOWDEFAULT);
218 UpdateWindow(g_hWnd);
219
220 MSG msg;
221 ZeroMemory(&msg, sizeof(msg));
222 while (msg.message != WM_QUIT)
223 {
224 if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
225 {
226 TranslateMessage(&msg);
227 DispatchMessage(&msg);
228 }
229 else
230 {
231 Render();
232 }
233 }
234 }
235 }
236
237 UnregisterClass(L"D3D Tutorial", wc.hInstance);
238 return 0;
239 }
