Commit | Line | Data |
---|---|---|
a09e091a JB |
1 | /* |
2 | *Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved. | |
3 | * | |
4 | *Permission is hereby granted, free of charge, to any person obtaining | |
5 | * a copy of this software and associated documentation files (the | |
6 | *"Software"), to deal in the Software without restriction, including | |
7 | *without limitation the rights to use, copy, modify, merge, publish, | |
8 | *distribute, sublicense, and/or sell copies of the Software, and to | |
9 | *permit persons to whom the Software is furnished to do so, subject to | |
10 | *the following conditions: | |
11 | * | |
12 | *The above copyright notice and this permission notice shall be | |
13 | *included in all copies or substantial portions of the Software. | |
14 | * | |
15 | *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
16 | *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
17 | *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
18 | *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR | |
19 | *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF | |
20 | *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
21 | *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | *Except as contained in this notice, the name of Harold L Hunt II | |
24 | *shall not be used in advertising or otherwise to promote the sale, use | |
25 | *or other dealings in this Software without prior written authorization | |
26 | *from Harold L Hunt II. | |
27 | * | |
28 | * Authors: Harold L Hunt II | |
29 | */ | |
30 | ||
31 | #ifdef HAVE_XWIN_CONFIG_H | |
32 | #include <xwin-config.h> | |
33 | #endif | |
34 | #include "win.h" | |
35 | #include "winmsg.h" | |
36 | ||
37 | /* | |
38 | * Global variables for function pointers into | |
39 | * dynamically loaded libraries | |
40 | */ | |
41 | FARPROC g_fpDirectDrawCreate = NULL; | |
42 | FARPROC g_fpDirectDrawCreateClipper = NULL; | |
43 | ||
44 | /* | |
45 | module handle for dynamically loaded directdraw library | |
46 | */ | |
47 | static HMODULE g_hmodDirectDraw = NULL; | |
48 | ||
49 | /* | |
50 | * Detect engines supported by current Windows version | |
51 | * DirectDraw version and hardware | |
52 | */ | |
53 | ||
54 | void | |
55 | winDetectSupportedEngines(void) | |
56 | { | |
57 | OSVERSIONINFO osvi; | |
58 | ||
59 | /* Initialize the engine support flags */ | |
60 | g_dwEnginesSupported = WIN_SERVER_SHADOW_GDI; | |
61 | ||
62 | #ifdef XWIN_NATIVEGDI | |
63 | g_dwEnginesSupported |= WIN_SERVER_NATIVE_GDI; | |
64 | #endif | |
65 | ||
66 | /* Get operating system version information */ | |
67 | ZeroMemory(&osvi, sizeof(osvi)); | |
68 | osvi.dwOSVersionInfoSize = sizeof(osvi); | |
69 | GetVersionEx(&osvi); | |
70 | ||
71 | /* Do we have DirectDraw? */ | |
72 | if (g_hmodDirectDraw != NULL) { | |
73 | LPDIRECTDRAW lpdd = NULL; | |
74 | LPDIRECTDRAW4 lpdd4 = NULL; | |
75 | HRESULT ddrval; | |
76 | ||
77 | /* Was the DirectDrawCreate function found? */ | |
78 | if (g_fpDirectDrawCreate == NULL) { | |
79 | /* No DirectDraw support */ | |
80 | return; | |
81 | } | |
82 | ||
83 | /* DirectDrawCreate exists, try to call it */ | |
84 | /* Create a DirectDraw object, store the address at lpdd */ | |
85 | ddrval = (*g_fpDirectDrawCreate) (NULL, (void **) &lpdd, NULL); | |
86 | if (FAILED(ddrval)) { | |
87 | /* No DirectDraw support */ | |
88 | winErrorFVerb(2, | |
89 | "winDetectSupportedEngines - DirectDraw not installed\n"); | |
90 | return; | |
91 | } | |
92 | else { | |
93 | /* We have DirectDraw */ | |
94 | winErrorFVerb(2, | |
95 | "winDetectSupportedEngines - DirectDraw installed, allowing ShadowDD\n"); | |
96 | g_dwEnginesSupported |= WIN_SERVER_SHADOW_DD; | |
97 | ||
98 | #ifdef XWIN_PRIMARYFB | |
99 | /* Allow PrimaryDD engine if NT */ | |
100 | if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
101 | g_dwEnginesSupported |= WIN_SERVER_PRIMARY_DD; | |
102 | winErrorFVerb(2, | |
103 | "winDetectSupportedEngines - Windows NT, allowing PrimaryDD\n"); | |
104 | } | |
105 | #endif | |
106 | } | |
107 | ||
108 | /* Try to query for DirectDraw4 interface */ | |
109 | ddrval = IDirectDraw_QueryInterface(lpdd, | |
110 | &IID_IDirectDraw4, | |
111 | (LPVOID *) &lpdd4); | |
112 | if (SUCCEEDED(ddrval)) { | |
113 | /* We have DirectDraw4 */ | |
114 | winErrorFVerb(2, | |
115 | "winDetectSupportedEngines - DirectDraw4 installed, allowing ShadowDDNL\n"); | |
116 | g_dwEnginesSupported |= WIN_SERVER_SHADOW_DDNL; | |
117 | } | |
118 | ||
119 | /* Cleanup DirectDraw interfaces */ | |
120 | if (lpdd4 != NULL) | |
121 | IDirectDraw_Release(lpdd4); | |
122 | if (lpdd != NULL) | |
123 | IDirectDraw_Release(lpdd); | |
124 | } | |
125 | ||
126 | winErrorFVerb(2, | |
127 | "winDetectSupportedEngines - Returning, supported engines %08x\n", | |
128 | (unsigned int) g_dwEnginesSupported); | |
129 | } | |
130 | ||
131 | /* | |
132 | * Set the engine type, depending on the engines | |
133 | * supported for this screen, and whether the user | |
134 | * suggested an engine type | |
135 | */ | |
136 | ||
137 | Bool | |
138 | winSetEngine(ScreenPtr pScreen) | |
139 | { | |
140 | winScreenPriv(pScreen); | |
141 | winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo; | |
142 | HDC hdc; | |
143 | DWORD dwBPP; | |
144 | ||
145 | /* Get a DC */ | |
146 | hdc = GetDC(NULL); | |
147 | if (hdc == NULL) { | |
148 | ErrorF("winSetEngine - Couldn't get an HDC\n"); | |
149 | return FALSE; | |
150 | } | |
151 | ||
152 | /* | |
153 | * pScreenInfo->dwBPP may be 0 to indicate that the current screen | |
154 | * depth is to be used. Thus, we must query for the current display | |
155 | * depth here. | |
156 | */ | |
157 | dwBPP = GetDeviceCaps(hdc, BITSPIXEL); | |
158 | ||
159 | /* Release the DC */ | |
160 | ReleaseDC(NULL, hdc); | |
161 | hdc = NULL; | |
162 | ||
163 | /* ShadowGDI is the only engine that supports windowed PseudoColor */ | |
164 | if (dwBPP == 8 && !pScreenInfo->fFullScreen) { | |
165 | winErrorFVerb(2, | |
166 | "winSetEngine - Windowed && PseudoColor => ShadowGDI\n"); | |
167 | pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI; | |
168 | ||
169 | /* Set engine function pointers */ | |
170 | winSetEngineFunctionsShadowGDI(pScreen); | |
171 | return TRUE; | |
172 | } | |
173 | ||
174 | /* ShadowGDI is the only engine that supports Multi Window Mode */ | |
175 | if (FALSE | |
176 | #ifdef XWIN_MULTIWINDOWEXTWM | |
177 | || pScreenInfo->fMWExtWM | |
178 | #endif | |
179 | #ifdef XWIN_MULTIWINDOW | |
180 | || pScreenInfo->fMultiWindow | |
181 | #endif | |
182 | ) { | |
183 | winErrorFVerb(2, | |
184 | "winSetEngine - Multi Window or Rootless => ShadowGDI\n"); | |
185 | pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI; | |
186 | ||
187 | /* Set engine function pointers */ | |
188 | winSetEngineFunctionsShadowGDI(pScreen); | |
189 | return TRUE; | |
190 | } | |
191 | ||
192 | /* If the user's choice is supported, we'll use that */ | |
193 | if (g_dwEnginesSupported & pScreenInfo->dwEnginePreferred) { | |
194 | winErrorFVerb(2, "winSetEngine - Using user's preference: %d\n", | |
195 | (int) pScreenInfo->dwEnginePreferred); | |
196 | pScreenInfo->dwEngine = pScreenInfo->dwEnginePreferred; | |
197 | ||
198 | /* Setup engine function pointers */ | |
199 | switch (pScreenInfo->dwEngine) { | |
200 | case WIN_SERVER_SHADOW_GDI: | |
201 | winSetEngineFunctionsShadowGDI(pScreen); | |
202 | break; | |
203 | case WIN_SERVER_SHADOW_DD: | |
204 | winSetEngineFunctionsShadowDD(pScreen); | |
205 | break; | |
206 | case WIN_SERVER_SHADOW_DDNL: | |
207 | winSetEngineFunctionsShadowDDNL(pScreen); | |
208 | break; | |
209 | #ifdef XWIN_PRIMARYFB | |
210 | case WIN_SERVER_PRIMARY_DD: | |
211 | winSetEngineFunctionsPrimaryDD(pScreen); | |
212 | break; | |
213 | #endif | |
214 | #ifdef XWIN_NATIVEGDI | |
215 | case WIN_SERVER_NATIVE_GDI: | |
216 | winSetEngineFunctionsNativeGDI(pScreen); | |
217 | break; | |
218 | #endif | |
219 | default: | |
220 | FatalError("winSetEngine - Invalid engine type\n"); | |
221 | } | |
222 | return TRUE; | |
223 | } | |
224 | ||
225 | /* ShadowDDNL has good performance, so why not */ | |
226 | if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL) { | |
227 | winErrorFVerb(2, "winSetEngine - Using Shadow DirectDraw NonLocking\n"); | |
228 | pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DDNL; | |
229 | ||
230 | /* Set engine function pointers */ | |
231 | winSetEngineFunctionsShadowDDNL(pScreen); | |
232 | return TRUE; | |
233 | } | |
234 | ||
235 | /* ShadowDD is next in line */ | |
236 | if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DD) { | |
237 | winErrorFVerb(2, "winSetEngine - Using Shadow DirectDraw\n"); | |
238 | pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DD; | |
239 | ||
240 | /* Set engine function pointers */ | |
241 | winSetEngineFunctionsShadowDD(pScreen); | |
242 | return TRUE; | |
243 | } | |
244 | ||
245 | /* ShadowGDI is next in line */ | |
246 | if (g_dwEnginesSupported & WIN_SERVER_SHADOW_GDI) { | |
247 | winErrorFVerb(2, "winSetEngine - Using Shadow GDI DIB\n"); | |
248 | pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI; | |
249 | ||
250 | /* Set engine function pointers */ | |
251 | winSetEngineFunctionsShadowGDI(pScreen); | |
252 | return TRUE; | |
253 | } | |
254 | ||
255 | return TRUE; | |
256 | } | |
257 | ||
258 | /* | |
259 | * Get procedure addresses for DirectDrawCreate and DirectDrawCreateClipper | |
260 | */ | |
261 | ||
262 | Bool | |
263 | winGetDDProcAddresses(void) | |
264 | { | |
265 | Bool fReturn = TRUE; | |
266 | ||
267 | /* Load the DirectDraw library */ | |
268 | g_hmodDirectDraw = LoadLibraryEx("ddraw.dll", NULL, 0); | |
269 | if (g_hmodDirectDraw == NULL) { | |
270 | ErrorF("winGetDDProcAddresses - Could not load ddraw.dll\n"); | |
271 | fReturn = TRUE; | |
272 | goto winGetDDProcAddresses_Exit; | |
273 | } | |
274 | ||
275 | /* Try to get the DirectDrawCreate address */ | |
276 | g_fpDirectDrawCreate = GetProcAddress(g_hmodDirectDraw, "DirectDrawCreate"); | |
277 | if (g_fpDirectDrawCreate == NULL) { | |
278 | ErrorF("winGetDDProcAddresses - Could not get DirectDrawCreate " | |
279 | "address\n"); | |
280 | fReturn = TRUE; | |
281 | goto winGetDDProcAddresses_Exit; | |
282 | } | |
283 | ||
284 | /* Try to get the DirectDrawCreateClipper address */ | |
285 | g_fpDirectDrawCreateClipper = GetProcAddress(g_hmodDirectDraw, | |
286 | "DirectDrawCreateClipper"); | |
287 | if (g_fpDirectDrawCreateClipper == NULL) { | |
288 | ErrorF("winGetDDProcAddresses - Could not get " | |
289 | "DirectDrawCreateClipper address\n"); | |
290 | fReturn = FALSE; | |
291 | goto winGetDDProcAddresses_Exit; | |
292 | } | |
293 | ||
294 | /* | |
295 | * Note: Do not unload ddraw.dll here. Do it in GiveUp | |
296 | */ | |
297 | ||
298 | winGetDDProcAddresses_Exit: | |
299 | /* Unload the DirectDraw library if we failed to initialize */ | |
300 | if (!fReturn && g_hmodDirectDraw != NULL) { | |
301 | FreeLibrary(g_hmodDirectDraw); | |
302 | g_hmodDirectDraw = NULL; | |
303 | } | |
304 | ||
305 | return fReturn; | |
306 | } | |
307 | ||
308 | void | |
309 | winReleaseDDProcAddresses(void) | |
310 | { | |
311 | if (g_hmodDirectDraw != NULL) { | |
312 | FreeLibrary(g_hmodDirectDraw); | |
313 | g_hmodDirectDraw = NULL; | |
314 | g_fpDirectDrawCreate = NULL; | |
315 | g_fpDirectDrawCreateClipper = NULL; | |
316 | } | |
317 | } |