implemented support for turning off mousegrab in csqc (feature existed
[divverent/darkplaces.git] / vid_glx.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18 */
19
20 #include <signal.h>
21
22 #include <dlfcn.h>
23
24 #include <X11/Xlib.h>
25 #include <X11/Xutil.h>
26 #include <GL/glx.h>
27
28 #include "quakedef.h"
29
30 #include <X11/keysym.h>
31 #include <X11/cursorfont.h>
32 #include <X11/xpm.h>
33
34 #include <X11/extensions/XShm.h>
35 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
36 #include <X11/extensions/xf86dga.h>
37 #endif
38 #include <X11/extensions/xf86vmode.h>
39
40 #include "nexuiz.xpm"
41 #include "darkplaces.xpm"
42
43 // Tell startup code that we have a client
44 int cl_available = true;
45
46 // note: if we used the XRandR extension we could support refresh rates
47 qboolean vid_supportrefreshrate = false;
48
49 //GLX prototypes
50 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
51 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
52 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
53 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
54 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
55 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
56
57 //GLX_ARB_get_proc_address
58 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
59
60 static dllfunction_t getprocaddressfuncs[] =
61 {
62         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
63         {NULL, NULL}
64 };
65
66 //GLX_SGI_swap_control
67 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
68
69 static dllfunction_t swapcontrolfuncs[] =
70 {
71         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
72         {NULL, NULL}
73 };
74
75 static Display *vidx11_display = NULL;
76 static int vidx11_screen;
77 static Window win;
78 static GLXContext ctx = NULL;
79
80 Atom wm_delete_window_atom;
81
82 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
83 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
84                     PointerMotionMask | ButtonMotionMask)
85 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
86                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
87                 LeaveWindowMask)
88
89
90 static qboolean mouse_avail = true;
91 static qboolean vid_usingmouse = false;
92 static qboolean vid_usingvsync = false;
93 static qboolean vid_usevsync = false;
94 static qboolean vid_x11_hardwaregammasupported = false;
95 static qboolean vid_x11_dgasupported = false;
96 static int vid_x11_gammarampsize = 0;
97
98 #if !defined(__APPLE__) && !defined(SUNOS)
99 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "1", "make use of DGA mouse input"};
100 static qboolean vid_usingdgamouse = false;
101 #endif
102
103 qboolean vidmode_ext = false;
104
105 static int win_x, win_y;
106
107 static XF86VidModeModeInfo init_vidmode;
108 static qboolean vid_isfullscreen = false;
109
110 static Visual *vidx11_visual;
111 static Colormap vidx11_colormap;
112
113 /*-----------------------------------------------------------------------*/
114
115 static int XLateKey(XKeyEvent *ev, char *ascii)
116 {
117         int key = 0;
118         char buf[64];
119         KeySym keysym, shifted;
120
121         keysym = XLookupKeysym (ev, 0);
122         XLookupString(ev, buf, sizeof buf, &shifted, 0);
123         *ascii = buf[0];
124
125         switch(keysym)
126         {
127                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
128                 case XK_Page_Up:         key = K_PGUP; break;
129
130                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
131                 case XK_Page_Down:       key = K_PGDN; break;
132
133                 case XK_KP_Home: key = K_KP_HOME; break;
134                 case XK_Home:    key = K_HOME; break;
135
136                 case XK_KP_End:  key = K_KP_END; break;
137                 case XK_End:     key = K_END; break;
138
139                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
140                 case XK_Left:    key = K_LEFTARROW; break;
141
142                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
143                 case XK_Right:  key = K_RIGHTARROW;             break;
144
145                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
146                 case XK_Down:    key = K_DOWNARROW; break;
147
148                 case XK_KP_Up:   key = K_KP_UPARROW; break;
149                 case XK_Up:              key = K_UPARROW;        break;
150
151                 case XK_Escape: key = K_ESCAPE;         break;
152
153                 case XK_KP_Enter: key = K_KP_ENTER;     break;
154                 case XK_Return: key = K_ENTER;           break;
155
156                 case XK_Tab:            key = K_TAB;                     break;
157
158                 case XK_F1:              key = K_F1;                            break;
159
160                 case XK_F2:              key = K_F2;                            break;
161
162                 case XK_F3:              key = K_F3;                            break;
163
164                 case XK_F4:              key = K_F4;                            break;
165
166                 case XK_F5:              key = K_F5;                            break;
167
168                 case XK_F6:              key = K_F6;                            break;
169
170                 case XK_F7:              key = K_F7;                            break;
171
172                 case XK_F8:              key = K_F8;                            break;
173
174                 case XK_F9:              key = K_F9;                            break;
175
176                 case XK_F10:            key = K_F10;                     break;
177
178                 case XK_F11:            key = K_F11;                     break;
179
180                 case XK_F12:            key = K_F12;                     break;
181
182                 case XK_BackSpace: key = K_BACKSPACE; break;
183
184                 case XK_KP_Delete: key = K_KP_DEL; break;
185                 case XK_Delete: key = K_DEL; break;
186
187                 case XK_Pause:  key = K_PAUSE;           break;
188
189                 case XK_Shift_L:
190                 case XK_Shift_R:        key = K_SHIFT;          break;
191
192                 case XK_Execute:
193                 case XK_Control_L:
194                 case XK_Control_R:      key = K_CTRL;            break;
195
196                 case XK_Alt_L:
197                 case XK_Meta_L:
198                 case XK_ISO_Level3_Shift:
199                 case XK_Alt_R:
200                 case XK_Meta_R: key = K_ALT;                    break;
201
202                 case XK_KP_Begin: key = K_KP_5; break;
203
204                 case XK_Insert:key = K_INS; break;
205                 case XK_KP_Insert: key = K_KP_INS; break;
206
207                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
208                 case XK_KP_Add:  key = K_KP_PLUS; break;
209                 case XK_KP_Subtract: key = K_KP_MINUS; break;
210                 case XK_KP_Divide: key = K_KP_SLASH; break;
211
212                 case XK_section:        key = '~'; break;
213
214                 default:
215                         if (keysym < 32)
216                                 break;
217
218                         if (keysym >= 'A' && keysym <= 'Z')
219                                 key = keysym - 'A' + 'a';
220                         else
221                                 key = keysym;
222
223                         break;
224         }
225
226         return key;
227 }
228
229 static Cursor CreateNullCursor(Display *display, Window root)
230 {
231         Pixmap cursormask;
232         XGCValues xgc;
233         GC gc;
234         XColor dummycolour;
235         Cursor cursor;
236
237         cursormask = XCreatePixmap(display, root, 1, 1, 1);
238         xgc.function = GXclear;
239         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
240         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
241         dummycolour.pixel = 0;
242         dummycolour.red = 0;
243         dummycolour.flags = 04;
244         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
245         XFreePixmap(display,cursormask);
246         XFreeGC(display,gc);
247         return cursor;
248 }
249
250 void VID_GrabMouse(qboolean grab)
251 {
252         if (!vidx11_display)
253                 return;
254         if (grab)
255         {
256 #if !defined(__APPLE__) && !defined(SUNOS)
257                 if(vid_usingmouse && (vid_usingdgamouse != !!vid_dgamouse.integer))
258                         VID_GrabMouse(false); // ungrab first!
259 #endif
260                 if (!vid_usingmouse && mouse_avail && win)
261                 {
262                         XWindowAttributes attribs_1;
263                         XSetWindowAttributes attribs_2;
264
265                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
266                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
267                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
268
269                 // inviso cursor
270                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
271
272                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
273
274 #if !defined(__APPLE__) && !defined(SUNOS)
275                         if (vid_dgamouse.integer && vid_x11_dgasupported)
276                         {
277                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
278                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
279                         }
280                         else
281 #endif
282                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
283
284                         if (vid_grabkeyboard.integer || vid_isfullscreen)
285                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
286
287                         cl_ignoremousemoves = 2;
288                         vid_usingmouse = true;
289 #if !defined(__APPLE__) && !defined(SUNOS)
290                         vid_usingdgamouse = !!vid_dgamouse.integer;
291 #endif
292                 }
293         }
294         else
295         {
296                 if (vid_usingmouse)
297                 {
298 #if !defined(__APPLE__) && !defined(SUNOS)
299                         if (vid_x11_dgasupported)
300                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
301 #endif
302
303                         XUngrabPointer(vidx11_display, CurrentTime);
304                         XUngrabKeyboard(vidx11_display, CurrentTime);
305
306                         // inviso cursor
307                         if (win)
308                                 XUndefineCursor(vidx11_display, win);
309
310                         cl_ignoremousemoves = 2;
311                         vid_usingmouse = false;
312                 }
313         }
314 }
315
316 static keynum_t buttonremap[18] =
317 {
318         K_MOUSE1,
319         K_MOUSE3,
320         K_MOUSE2,
321         K_MWHEELUP,
322         K_MWHEELDOWN,
323         K_MOUSE4,
324         K_MOUSE5,
325         K_MOUSE6,
326         K_MOUSE7,
327         K_MOUSE8,
328         K_MOUSE9,
329         K_MOUSE10,
330         K_MOUSE11,
331         K_MOUSE12,
332         K_MOUSE13,
333         K_MOUSE14,
334         K_MOUSE15,
335         K_MOUSE16,
336 };
337
338 static void HandleEvents(void)
339 {
340         XEvent event;
341         int key;
342         char ascii;
343         qboolean dowarp = false;
344
345         if (!vidx11_display)
346                 return;
347
348         while (XPending(vidx11_display))
349         {
350                 XNextEvent(vidx11_display, &event);
351
352                 switch (event.type)
353                 {
354                 case KeyPress:
355                         // key pressed
356                         key = XLateKey (&event.xkey, &ascii);
357                         Key_Event(key, ascii, true);
358                         break;
359
360                 case KeyRelease:
361                         // key released
362                         key = XLateKey (&event.xkey, &ascii);
363                         Key_Event(key, ascii, false);
364                         break;
365
366                 case MotionNotify:
367                         // mouse moved
368                         if (vid_usingmouse)
369                         {
370 #if !defined(__APPLE__) && !defined(SUNOS)
371                                 if (vid_dgamouse.integer == 1 && vid_x11_dgasupported)
372                                 {
373                                         in_mouse_x += event.xmotion.x_root;
374                                         in_mouse_y += event.xmotion.y_root;
375                                 }
376                                 else
377 #endif
378                                 {
379                                         if (!event.xmotion.send_event)
380                                         {
381                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
382                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
383                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
384                                                         dowarp = true;
385                                         }
386                                 }
387                         }
388                         in_windowmouse_x = event.xmotion.x;
389                         in_windowmouse_y = event.xmotion.y;
390                         break;
391
392                 case ButtonPress:
393                         // mouse button pressed
394                         if (event.xbutton.button <= 18)
395                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
396                         else
397                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
398                         break;
399
400                 case ButtonRelease:
401                         // mouse button released
402                         if (event.xbutton.button <= 18)
403                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
404                         else
405                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
406                         break;
407
408                 case CreateNotify:
409                         // window created
410                         win_x = event.xcreatewindow.x;
411                         win_y = event.xcreatewindow.y;
412                         break;
413
414                 case ConfigureNotify:
415                         // window changed size/location
416                         win_x = event.xconfigure.x;
417                         win_y = event.xconfigure.y;
418                         if(vid_resizable.integer < 2)
419                         {
420                                 vid.width = event.xconfigure.width;
421                                 vid.height = event.xconfigure.height;
422                         }
423                         break;
424                 case DestroyNotify:
425                         // window has been destroyed
426                         Sys_Quit(0);
427                         break;
428                 case ClientMessage:
429                         // window manager messages
430                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
431                                 Sys_Quit(0);
432                         break;
433                 case MapNotify:
434                         // window restored
435                         vid_hidden = false;
436                         VID_RestoreSystemGamma();
437                         break;
438                 case UnmapNotify:
439                         // window iconified/rolledup/whatever
440                         vid_hidden = true;
441                         VID_RestoreSystemGamma();
442                         break;
443                 case FocusIn:
444                         // window is now the input focus
445                         vid_activewindow = true;
446                         break;
447                 case FocusOut:
448                         // window is no longer the input focus
449                         vid_activewindow = false;
450                         VID_RestoreSystemGamma();
451                         break;
452                 case EnterNotify:
453                         // mouse entered window
454                         break;
455                 case LeaveNotify:
456                         // mouse left window
457                         break;
458                 }
459         }
460
461         if (dowarp)
462         {
463                 /* move the mouse to the window center again */
464                 in_windowmouse_x = (int)(vid.width / 2);
465                 in_windowmouse_y = (int)(vid.height / 2);
466                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, (int)in_windowmouse_x, (int)in_windowmouse_y);
467         }
468 }
469
470 static void *prjobj = NULL;
471
472 static void GL_CloseLibrary(void)
473 {
474         if (prjobj)
475                 dlclose(prjobj);
476         prjobj = NULL;
477         gl_driver[0] = 0;
478         qglXGetProcAddressARB = NULL;
479         gl_extensions = "";
480         gl_platform = "";
481         gl_platformextensions = "";
482 }
483
484 static int GL_OpenLibrary(const char *name)
485 {
486         Con_Printf("Loading OpenGL driver %s\n", name);
487         GL_CloseLibrary();
488         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
489         {
490                 Con_Printf("Unable to open symbol list for %s\n", name);
491                 return false;
492         }
493         strlcpy(gl_driver, name, sizeof(gl_driver));
494         return true;
495 }
496
497 void *GL_GetProcAddress(const char *name)
498 {
499         void *p = NULL;
500         if (qglXGetProcAddressARB != NULL)
501                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
502         if (p == NULL)
503                 p = (void *) dlsym(prjobj, name);
504         return p;
505 }
506
507 void VID_Shutdown(void)
508 {
509         if (!ctx || !vidx11_display)
510                 return;
511
512         VID_GrabMouse(false);
513         VID_RestoreSystemGamma();
514
515         // FIXME: glXDestroyContext here?
516         if (vid_isfullscreen)
517                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
518         if (win)
519                 XDestroyWindow(vidx11_display, win);
520         XCloseDisplay(vidx11_display);
521
522         vid_hidden = true;
523         vid_isfullscreen = false;
524         vidx11_display = NULL;
525         win = 0;
526         ctx = NULL;
527
528         GL_CloseLibrary();
529         Key_ClearStates ();
530 }
531
532 void signal_handler(int sig)
533 {
534         Con_Printf("Received signal %d, exiting...\n", sig);
535         VID_RestoreSystemGamma();
536         Sys_Quit(1);
537 }
538
539 void InitSig(void)
540 {
541         signal(SIGHUP, signal_handler);
542         signal(SIGINT, signal_handler);
543         signal(SIGQUIT, signal_handler);
544         signal(SIGILL, signal_handler);
545         signal(SIGTRAP, signal_handler);
546         signal(SIGIOT, signal_handler);
547         signal(SIGBUS, signal_handler);
548         signal(SIGFPE, signal_handler);
549         signal(SIGSEGV, signal_handler);
550         signal(SIGTERM, signal_handler);
551 }
552
553 void VID_Finish (void)
554 {
555         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
556         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
557         {
558                 vid_usingvsync = vid_usevsync;
559                 if (qglXSwapIntervalSGI (vid_usevsync))
560                         Con_Print("glXSwapIntervalSGI didn't accept the vid_vsync change, it will take effect on next vid_restart (GLX_SGI_swap_control does not allow turning off vsync)\n");
561         }
562
563         if (r_render.integer)
564         {
565                 CHECKGLERROR
566                 if (r_speeds.integer || gl_finish.integer)
567                 {
568                         qglFinish();CHECKGLERROR
569                 }
570                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
571         }
572
573         if (vid_x11_hardwaregammasupported)
574                 VID_UpdateGamma(false, vid_x11_gammarampsize);
575 }
576
577 int VID_SetGamma(unsigned short *ramps, int rampsize)
578 {
579         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
580 }
581
582 int VID_GetGamma(unsigned short *ramps, int rampsize)
583 {
584         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
585 }
586
587 void VID_Init(void)
588 {
589 #if !defined(__APPLE__) && !defined(SUNOS)
590         Cvar_RegisterVariable (&vid_dgamouse);
591 #endif
592         InitSig(); // trap evil signals
593 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
594         if (COM_CheckParm ("-nomouse"))
595                 mouse_avail = false;
596 }
597
598 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
599 {
600         *attrib++ = GLX_RGBA;
601         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
602         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
603         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
604         *attrib++ = GLX_DOUBLEBUFFER;
605         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
606         // if stencil is enabled, ask for alpha too
607         if (stencil)
608         {
609                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
610                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
611         }
612         if (stereobuffer)
613                 *attrib++ = GLX_STEREO;
614         if (samples > 1)
615         {
616                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
617                 *attrib++ = 1;
618                 *attrib++ = GLX_SAMPLES_ARB;
619                 *attrib++ = samples;
620         }
621         *attrib++ = None;
622 }
623
624 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
625 {
626         int i;
627         int attrib[32];
628         XSetWindowAttributes attr;
629         XClassHint *clshints;
630         XWMHints *wmhints;
631         XSizeHints *szhints;
632         unsigned long mask;
633         Window root;
634         XVisualInfo *visinfo;
635         int MajorVersion, MinorVersion;
636         const char *drivername;
637
638 #if defined(__APPLE__) && defined(__MACH__)
639         drivername = "/usr/X11R6/lib/libGL.1.dylib";
640 #else
641         drivername = "libGL.so.1";
642 #endif
643 // COMMANDLINEOPTION: Linux GLX: -gl_driver <drivername> selects a GL driver library, default is libGL.so.1, useful only for using fxmesa or similar, if you don't know what this is for, you don't need it
644 // COMMANDLINEOPTION: BSD GLX: -gl_driver <drivername> selects a GL driver library, default is libGL.so.1, useful only for using fxmesa or similar, if you don't know what this is for, you don't need it
645 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
646         i = COM_CheckParm("-gl_driver");
647         if (i && i < com_argc - 1)
648                 drivername = com_argv[i + 1];
649         if (!GL_OpenLibrary(drivername))
650         {
651                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
652                 return false;
653         }
654
655         if (!(vidx11_display = XOpenDisplay(NULL)))
656         {
657                 Con_Print("Couldn't open the X display\n");
658                 return false;
659         }
660
661         vidx11_screen = DefaultScreen(vidx11_display);
662         root = RootWindow(vidx11_display, vidx11_screen);
663
664         // Get video mode list
665         MajorVersion = MinorVersion = 0;
666         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
667                 vidmode_ext = false;
668         else
669         {
670                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
671                 vidmode_ext = true;
672         }
673
674         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
675          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
676          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
677          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
678          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
679          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
680         {
681                 Con_Printf("glX functions not found in %s\n", gl_driver);
682                 return false;
683         }
684
685         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
686         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
687         if (!visinfo && (samples == 1))
688         {
689                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
690                  * entirely without one */
691                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
692                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
693         }
694         if (!visinfo)
695         {
696                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
697                 return false;
698         }
699
700         if (vidmode_ext)
701         {
702                 int best_fit, best_dist, dist, x, y;
703
704                 // Are we going fullscreen?  If so, let's change video mode
705                 if (fullscreen)
706                 {
707                         XF86VidModeModeLine *current_vidmode;
708                         XF86VidModeModeInfo **vidmodes;
709                         int num_vidmodes;
710
711                         // This nice hack comes from the SDL source code
712                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
713                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
714
715                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
716                         best_dist = 9999999;
717                         best_fit = -1;
718
719                         for (i = 0; i < num_vidmodes; i++)
720                         {
721                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
722                                         continue;
723
724                                 x = width - vidmodes[i]->hdisplay;
725                                 y = height - vidmodes[i]->vdisplay;
726                                 dist = (x * x) + (y * y);
727                                 if (dist < best_dist)
728                                 {
729                                         best_dist = dist;
730                                         best_fit = i;
731                                 }
732                         }
733
734                         if (best_fit != -1)
735                         {
736                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
737                                 // to width/height =, so the window will take the full area of
738                                 // the mode chosen
739                                 width = vidmodes[best_fit]->hdisplay;
740                                 height = vidmodes[best_fit]->vdisplay;
741
742                                 // change to the mode
743                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
744                                 vid_isfullscreen = true;
745
746                                 // Move the viewport to top left
747                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
748                         }
749                         else
750                                 fullscreen = 0;
751
752                         free(vidmodes);
753                 }
754         }
755
756         // LordHavoc: save the visual for use in gamma ramp settings later
757         vidx11_visual = visinfo->visual;
758
759         /* window attributes */
760         attr.background_pixel = 0;
761         attr.border_pixel = 0;
762         // LordHavoc: save the colormap for later, too
763         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
764         attr.event_mask = X_MASK;
765         if (vid_isfullscreen)
766         {
767                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
768                 attr.override_redirect = True;
769                 attr.backing_store = NotUseful;
770                 attr.save_under = False;
771         }
772         else
773                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
774
775         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
776
777         wmhints = XAllocWMHints();
778         if(XpmCreatePixmapFromData(vidx11_display, win,
779                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
780                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
781                 wmhints->flags |= IconPixmapHint | IconMaskHint;
782
783         clshints = XAllocClassHint();
784         clshints->res_name = strdup(gamename);
785         clshints->res_class = strdup("DarkPlaces");
786
787         szhints = XAllocSizeHints();
788         if(vid_resizable.integer == 0)
789         {
790                 szhints->min_width = szhints->max_width = width;
791                 szhints->min_height = szhints->max_height = height;
792                 szhints->flags |= PMinSize | PMaxSize;
793         }
794
795         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
796         XFree(clshints);
797         XFree(wmhints);
798         XFree(szhints);
799         //XStoreName(vidx11_display, win, gamename);
800         XMapWindow(vidx11_display, win);
801
802         // LordHavoc: making the close button on a window do the right thing
803         // seems to involve this mess, sigh...
804         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
805         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
806
807         if (vid_isfullscreen)
808         {
809                 XMoveWindow(vidx11_display, win, 0, 0);
810                 XRaiseWindow(vidx11_display, win);
811                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
812                 XFlush(vidx11_display);
813                 // Move the viewport to top left
814                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
815         }
816
817         //XSync(vidx11_display, False);
818
819         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
820         if (!ctx)
821         {
822                 Con_Printf ("glXCreateContext failed\n");
823                 return false;
824         }
825
826         if (!qglXMakeCurrent(vidx11_display, win, ctx))
827         {
828                 Con_Printf ("glXMakeCurrent failed\n");
829                 return false;
830         }
831
832         XSync(vidx11_display, False);
833
834         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
835         {
836                 Con_Printf ("glGetString not found in %s\n", gl_driver);
837                 return false;
838         }
839
840         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
841         gl_platform = "GLX";
842         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
843
844         gl_videosyncavailable = false;
845
846 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
847 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
848 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
849         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
850 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
851 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
852 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
853         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
854
855         vid_usingmouse = false;
856         vid_usingvsync = false;
857         vid_hidden = false;
858         vid_activewindow = true;
859         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
860 #if !defined(__APPLE__) && !defined(SUNOS)
861         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
862         if (!vid_x11_dgasupported)
863                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
864 #endif
865         GL_Init();
866         return true;
867 }
868
869 void Sys_SendKeyEvents(void)
870 {
871         static qboolean sound_active = true;
872
873         // enable/disable sound on focus gain/loss
874         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
875         {
876                 if (!sound_active)
877                 {
878                         S_UnblockSound ();
879                         sound_active = true;
880                 }
881         }
882         else
883         {
884                 if (sound_active)
885                 {
886                         S_BlockSound ();
887                         sound_active = false;
888                 }
889         }
890
891         HandleEvents();
892 }
893
894 void IN_Move (void)
895 {
896 }