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