fixed several bugs with mouse grabbing
[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.mouseaim)
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                         if (vid.fullscreen)
435                                 break;
436                         // window restored
437                         vid_hidden = false;
438                         VID_RestoreSystemGamma();
439                         break;
440                 case UnmapNotify:
441                         if (vid.fullscreen)
442                                 break;
443                         // window iconified/rolledup/whatever
444                         vid_hidden = true;
445                         VID_RestoreSystemGamma();
446                         break;
447                 case FocusIn:
448                         if (vid.fullscreen)
449                                 break;
450                         // window is now the input focus
451                         vid_activewindow = true;
452                         break;
453                 case FocusOut:
454                         if (vid.fullscreen)
455                                 break;
456                         // window is no longer the input focus
457                         vid_activewindow = false;
458                         VID_RestoreSystemGamma();
459                         break;
460                 case EnterNotify:
461                         // mouse entered window
462                         break;
463                 case LeaveNotify:
464                         // mouse left window
465                         break;
466                 }
467         }
468
469         if (dowarp)
470         {
471                 /* move the mouse to the window center again */
472                 in_windowmouse_x = (int)(vid.width / 2);
473                 in_windowmouse_y = (int)(vid.height / 2);
474                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, (int)in_windowmouse_x, (int)in_windowmouse_y);
475         }
476 }
477
478 static void *prjobj = NULL;
479
480 static void GL_CloseLibrary(void)
481 {
482         if (prjobj)
483                 dlclose(prjobj);
484         prjobj = NULL;
485         gl_driver[0] = 0;
486         qglXGetProcAddressARB = NULL;
487         gl_extensions = "";
488         gl_platform = "";
489         gl_platformextensions = "";
490 }
491
492 static int GL_OpenLibrary(const char *name)
493 {
494         Con_Printf("Loading OpenGL driver %s\n", name);
495         GL_CloseLibrary();
496         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
497         {
498                 Con_Printf("Unable to open symbol list for %s\n", name);
499                 return false;
500         }
501         strlcpy(gl_driver, name, sizeof(gl_driver));
502         return true;
503 }
504
505 void *GL_GetProcAddress(const char *name)
506 {
507         void *p = NULL;
508         if (qglXGetProcAddressARB != NULL)
509                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
510         if (p == NULL)
511                 p = (void *) dlsym(prjobj, name);
512         return p;
513 }
514
515 void VID_Shutdown(void)
516 {
517         if (!ctx || !vidx11_display)
518                 return;
519
520         VID_GrabMouse(false);
521         VID_RestoreSystemGamma();
522
523         // FIXME: glXDestroyContext here?
524         if (vid_isfullscreen)
525                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
526         if (win)
527                 XDestroyWindow(vidx11_display, win);
528         XCloseDisplay(vidx11_display);
529
530         vid_hidden = true;
531         vid_isfullscreen = false;
532         vidx11_display = NULL;
533         win = 0;
534         ctx = NULL;
535
536         GL_CloseLibrary();
537         Key_ClearStates ();
538 }
539
540 void signal_handler(int sig)
541 {
542         Con_Printf("Received signal %d, exiting...\n", sig);
543         VID_RestoreSystemGamma();
544         Sys_Quit(1);
545 }
546
547 void InitSig(void)
548 {
549         signal(SIGHUP, signal_handler);
550         signal(SIGINT, signal_handler);
551         signal(SIGQUIT, signal_handler);
552         signal(SIGILL, signal_handler);
553         signal(SIGTRAP, signal_handler);
554         signal(SIGIOT, signal_handler);
555         signal(SIGBUS, signal_handler);
556         signal(SIGFPE, signal_handler);
557         signal(SIGSEGV, signal_handler);
558         signal(SIGTERM, signal_handler);
559 }
560
561 void VID_Finish (void)
562 {
563         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
564         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
565         {
566                 vid_usingvsync = vid_usevsync;
567                 if (qglXSwapIntervalSGI (vid_usevsync))
568                         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");
569         }
570
571         if (r_render.integer)
572         {
573                 CHECKGLERROR
574                 if (r_speeds.integer || gl_finish.integer)
575                 {
576                         qglFinish();CHECKGLERROR
577                 }
578                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
579         }
580
581         if (vid_x11_hardwaregammasupported)
582                 VID_UpdateGamma(false, vid_x11_gammarampsize);
583 }
584
585 int VID_SetGamma(unsigned short *ramps, int rampsize)
586 {
587         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
588 }
589
590 int VID_GetGamma(unsigned short *ramps, int rampsize)
591 {
592         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
593 }
594
595 void VID_Init(void)
596 {
597 #if !defined(__APPLE__) && !defined(SUNOS)
598         Cvar_RegisterVariable (&vid_dgamouse);
599 #endif
600         InitSig(); // trap evil signals
601 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
602         if (COM_CheckParm ("-nomouse"))
603                 mouse_avail = false;
604 }
605
606 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
607 {
608         *attrib++ = GLX_RGBA;
609         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
610         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
611         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
612         *attrib++ = GLX_DOUBLEBUFFER;
613         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
614         // if stencil is enabled, ask for alpha too
615         if (stencil)
616         {
617                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
618                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
619         }
620         if (stereobuffer)
621                 *attrib++ = GLX_STEREO;
622         if (samples > 1)
623         {
624                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
625                 *attrib++ = 1;
626                 *attrib++ = GLX_SAMPLES_ARB;
627                 *attrib++ = samples;
628         }
629         *attrib++ = None;
630 }
631
632 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
633 {
634         int i;
635         int attrib[32];
636         XSetWindowAttributes attr;
637         XClassHint *clshints;
638         XWMHints *wmhints;
639         XSizeHints *szhints;
640         unsigned long mask;
641         Window root;
642         XVisualInfo *visinfo;
643         int MajorVersion, MinorVersion;
644         const char *drivername;
645
646 #if defined(__APPLE__) && defined(__MACH__)
647         drivername = "/usr/X11R6/lib/libGL.1.dylib";
648 #else
649         drivername = "libGL.so.1";
650 #endif
651 // 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
652 // 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
653 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
654         i = COM_CheckParm("-gl_driver");
655         if (i && i < com_argc - 1)
656                 drivername = com_argv[i + 1];
657         if (!GL_OpenLibrary(drivername))
658         {
659                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
660                 return false;
661         }
662
663         if (!(vidx11_display = XOpenDisplay(NULL)))
664         {
665                 Con_Print("Couldn't open the X display\n");
666                 return false;
667         }
668
669         vidx11_screen = DefaultScreen(vidx11_display);
670         root = RootWindow(vidx11_display, vidx11_screen);
671
672         // Get video mode list
673         MajorVersion = MinorVersion = 0;
674         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
675                 vidmode_ext = false;
676         else
677         {
678                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
679                 vidmode_ext = true;
680         }
681
682         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
683          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
684          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
685          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
686          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
687          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
688         {
689                 Con_Printf("glX functions not found in %s\n", gl_driver);
690                 return false;
691         }
692
693         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
694         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
695         if (!visinfo && (samples == 1))
696         {
697                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
698                  * entirely without one */
699                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
700                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
701         }
702         if (!visinfo)
703         {
704                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
705                 return false;
706         }
707
708         if (vidmode_ext)
709         {
710                 int best_fit, best_dist, dist, x, y;
711
712                 // Are we going fullscreen?  If so, let's change video mode
713                 if (fullscreen)
714                 {
715                         XF86VidModeModeLine *current_vidmode;
716                         XF86VidModeModeInfo **vidmodes;
717                         int num_vidmodes;
718
719                         // This nice hack comes from the SDL source code
720                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
721                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
722
723                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
724                         best_dist = 9999999;
725                         best_fit = -1;
726
727                         for (i = 0; i < num_vidmodes; i++)
728                         {
729                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
730                                         continue;
731
732                                 x = width - vidmodes[i]->hdisplay;
733                                 y = height - vidmodes[i]->vdisplay;
734                                 dist = (x * x) + (y * y);
735                                 if (dist < best_dist)
736                                 {
737                                         best_dist = dist;
738                                         best_fit = i;
739                                 }
740                         }
741
742                         if (best_fit != -1)
743                         {
744                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
745                                 // to width/height =, so the window will take the full area of
746                                 // the mode chosen
747                                 width = vidmodes[best_fit]->hdisplay;
748                                 height = vidmodes[best_fit]->vdisplay;
749
750                                 // change to the mode
751                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
752                                 vid_isfullscreen = true;
753
754                                 // Move the viewport to top left
755                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
756                         }
757                         else
758                                 fullscreen = 0;
759
760                         free(vidmodes);
761                 }
762         }
763
764         // LordHavoc: save the visual for use in gamma ramp settings later
765         vidx11_visual = visinfo->visual;
766
767         /* window attributes */
768         attr.background_pixel = 0;
769         attr.border_pixel = 0;
770         // LordHavoc: save the colormap for later, too
771         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
772         attr.event_mask = X_MASK;
773         if (vid_isfullscreen)
774         {
775                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
776                 attr.override_redirect = True;
777                 attr.backing_store = NotUseful;
778                 attr.save_under = False;
779         }
780         else
781                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
782
783         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
784
785         wmhints = XAllocWMHints();
786         if(XpmCreatePixmapFromData(vidx11_display, win,
787                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
788                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
789                 wmhints->flags |= IconPixmapHint | IconMaskHint;
790
791         clshints = XAllocClassHint();
792         clshints->res_name = strdup(gamename);
793         clshints->res_class = strdup("DarkPlaces");
794
795         szhints = XAllocSizeHints();
796         if(vid_resizable.integer == 0)
797         {
798                 szhints->min_width = szhints->max_width = width;
799                 szhints->min_height = szhints->max_height = height;
800                 szhints->flags |= PMinSize | PMaxSize;
801         }
802
803         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
804         XFree(clshints);
805         XFree(wmhints);
806         XFree(szhints);
807         //XStoreName(vidx11_display, win, gamename);
808         XMapWindow(vidx11_display, win);
809
810         // LordHavoc: making the close button on a window do the right thing
811         // seems to involve this mess, sigh...
812         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
813         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
814
815         if (vid_isfullscreen)
816         {
817                 XMoveWindow(vidx11_display, win, 0, 0);
818                 XRaiseWindow(vidx11_display, win);
819                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
820                 XFlush(vidx11_display);
821                 // Move the viewport to top left
822                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
823         }
824
825         //XSync(vidx11_display, False);
826
827         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
828         if (!ctx)
829         {
830                 Con_Printf ("glXCreateContext failed\n");
831                 return false;
832         }
833
834         if (!qglXMakeCurrent(vidx11_display, win, ctx))
835         {
836                 Con_Printf ("glXMakeCurrent failed\n");
837                 return false;
838         }
839
840         XSync(vidx11_display, False);
841
842         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
843         {
844                 Con_Printf ("glGetString not found in %s\n", gl_driver);
845                 return false;
846         }
847
848         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
849         gl_platform = "GLX";
850         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
851
852         gl_videosyncavailable = false;
853
854 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
855 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
856 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
857         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
858 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
859 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
860 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
861         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
862
863         vid_usingmouse = false;
864         vid_usingvsync = false;
865         vid_hidden = false;
866         vid_activewindow = true;
867         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
868 #if !defined(__APPLE__) && !defined(SUNOS)
869         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
870         if (!vid_x11_dgasupported)
871                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
872 #endif
873         GL_Init();
874         return true;
875 }
876
877 void Sys_SendKeyEvents(void)
878 {
879         static qboolean sound_active = true;
880
881         // enable/disable sound on focus gain/loss
882         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
883         {
884                 if (!sound_active)
885                 {
886                         S_UnblockSound ();
887                         sound_active = true;
888                 }
889         }
890         else
891         {
892                 if (sound_active)
893                 {
894                         S_BlockSound ();
895                         sound_active = false;
896                 }
897         }
898
899         HandleEvents();
900 }
901
902 void IN_Move (void)
903 {
904 }