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