fixed bug where vid_dgamouse cvar broke support for absolute mouse
[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         qboolean usedgamouse;
253         if (!vidx11_display)
254                 return;
255         usedgamouse = grab && vid.mouseaim && vid_dgamouse.integer;
256 #if !defined(__APPLE__) && !defined(SUNOS)
257         if (!vid_x11_dgasupported)
258                 usedgamouse = false;
259 #endif
260         if (grab)
261         {
262 #if !defined(__APPLE__) && !defined(SUNOS)
263                 if(vid_usingmouse && (vid_usingdgamouse != usedgamouse))
264                         VID_GrabMouse(false); // ungrab first!
265 #endif
266                 if (!vid_usingmouse && mouse_avail && win)
267                 {
268                         XWindowAttributes attribs_1;
269                         XSetWindowAttributes attribs_2;
270
271                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
272                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
273                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
274
275                 // inviso cursor
276                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
277
278                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
279
280 #if !defined(__APPLE__) && !defined(SUNOS)
281                         vid_usingdgamouse = usedgamouse;
282                         if (usedgamouse)
283                         {
284                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
285                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
286                         }
287                         else
288 #endif
289                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
290
291                         if (vid_grabkeyboard.integer || vid_isfullscreen)
292                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
293
294                         cl_ignoremousemoves = 2;
295                         vid_usingmouse = true;
296                 }
297         }
298         else
299         {
300                 if (vid_usingmouse)
301                 {
302 #if !defined(__APPLE__) && !defined(SUNOS)
303                         if (vid_usingdgamouse)
304                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
305                         vid_usingdgamouse = false;
306 #endif
307
308                         XUngrabPointer(vidx11_display, CurrentTime);
309                         XUngrabKeyboard(vidx11_display, CurrentTime);
310
311                         // inviso cursor
312                         if (win)
313                                 XUndefineCursor(vidx11_display, win);
314
315                         cl_ignoremousemoves = 2;
316                         vid_usingmouse = false;
317                 }
318         }
319 }
320
321 static keynum_t buttonremap[18] =
322 {
323         K_MOUSE1,
324         K_MOUSE3,
325         K_MOUSE2,
326         K_MWHEELUP,
327         K_MWHEELDOWN,
328         K_MOUSE4,
329         K_MOUSE5,
330         K_MOUSE6,
331         K_MOUSE7,
332         K_MOUSE8,
333         K_MOUSE9,
334         K_MOUSE10,
335         K_MOUSE11,
336         K_MOUSE12,
337         K_MOUSE13,
338         K_MOUSE14,
339         K_MOUSE15,
340         K_MOUSE16,
341 };
342
343 static void HandleEvents(void)
344 {
345         XEvent event;
346         int key;
347         char ascii;
348         qboolean dowarp = false;
349
350         if (!vidx11_display)
351                 return;
352
353         while (XPending(vidx11_display))
354         {
355                 XNextEvent(vidx11_display, &event);
356
357                 switch (event.type)
358                 {
359                 case KeyPress:
360                         // key pressed
361                         key = XLateKey (&event.xkey, &ascii);
362                         Key_Event(key, ascii, true);
363                         break;
364
365                 case KeyRelease:
366                         // key released
367                         key = XLateKey (&event.xkey, &ascii);
368                         Key_Event(key, ascii, false);
369                         break;
370
371                 case MotionNotify:
372                         // mouse moved
373                         if (vid.mouseaim)
374                         {
375 #if !defined(__APPLE__) && !defined(SUNOS)
376                                 if (vid_usingdgamouse)
377                                 {
378                                         in_mouse_x += event.xmotion.x_root;
379                                         in_mouse_y += event.xmotion.y_root;
380                                 }
381                                 else
382 #endif
383                                 {
384                                         if (!event.xmotion.send_event)
385                                         {
386                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
387                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
388                                                 if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
389                                                 //if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
390                                                         dowarp = true;
391                                         }
392                                 }
393                         }
394                         in_windowmouse_x = event.xmotion.x;
395                         in_windowmouse_y = 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                         if(vid_resizable.integer < 2)
425                         {
426                                 vid.width = event.xconfigure.width;
427                                 vid.height = event.xconfigure.height;
428                         }
429                         break;
430                 case DestroyNotify:
431                         // window has been destroyed
432                         Sys_Quit(0);
433                         break;
434                 case ClientMessage:
435                         // window manager messages
436                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
437                                 Sys_Quit(0);
438                         break;
439                 case MapNotify:
440                         if (vid.fullscreen)
441                                 break;
442                         // window restored
443                         vid_hidden = false;
444                         VID_RestoreSystemGamma();
445                         break;
446                 case UnmapNotify:
447                         if (vid.fullscreen)
448                                 break;
449                         // window iconified/rolledup/whatever
450                         vid_hidden = true;
451                         VID_RestoreSystemGamma();
452                         break;
453                 case FocusIn:
454                         if (vid.fullscreen)
455                                 break;
456                         // window is now the input focus
457                         vid_activewindow = true;
458                         break;
459                 case FocusOut:
460                         if (vid.fullscreen)
461                                 break;
462                         // window is no longer the input focus
463                         vid_activewindow = false;
464                         VID_RestoreSystemGamma();
465                         break;
466                 case EnterNotify:
467                         // mouse entered window
468                         break;
469                 case LeaveNotify:
470                         // mouse left window
471                         break;
472                 }
473         }
474
475         if (dowarp)
476         {
477                 /* move the mouse to the window center again */
478                 in_windowmouse_x = (int)(vid.width / 2);
479                 in_windowmouse_y = (int)(vid.height / 2);
480                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, (int)in_windowmouse_x, (int)in_windowmouse_y);
481         }
482 }
483
484 static void *prjobj = NULL;
485
486 static void GL_CloseLibrary(void)
487 {
488         if (prjobj)
489                 dlclose(prjobj);
490         prjobj = NULL;
491         gl_driver[0] = 0;
492         qglXGetProcAddressARB = NULL;
493         gl_extensions = "";
494         gl_platform = "";
495         gl_platformextensions = "";
496 }
497
498 static int GL_OpenLibrary(const char *name)
499 {
500         Con_Printf("Loading OpenGL driver %s\n", name);
501         GL_CloseLibrary();
502         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
503         {
504                 Con_Printf("Unable to open symbol list for %s\n", name);
505                 return false;
506         }
507         strlcpy(gl_driver, name, sizeof(gl_driver));
508         return true;
509 }
510
511 void *GL_GetProcAddress(const char *name)
512 {
513         void *p = NULL;
514         if (qglXGetProcAddressARB != NULL)
515                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
516         if (p == NULL)
517                 p = (void *) dlsym(prjobj, name);
518         return p;
519 }
520
521 void VID_Shutdown(void)
522 {
523         if (!ctx || !vidx11_display)
524                 return;
525
526         VID_GrabMouse(false);
527         VID_RestoreSystemGamma();
528
529         // FIXME: glXDestroyContext here?
530         if (vid_isfullscreen)
531                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
532         if (win)
533                 XDestroyWindow(vidx11_display, win);
534         XCloseDisplay(vidx11_display);
535
536         vid_hidden = true;
537         vid_isfullscreen = false;
538         vidx11_display = NULL;
539         win = 0;
540         ctx = NULL;
541
542         GL_CloseLibrary();
543         Key_ClearStates ();
544 }
545
546 void signal_handler(int sig)
547 {
548         Con_Printf("Received signal %d, exiting...\n", sig);
549         VID_RestoreSystemGamma();
550         Sys_Quit(1);
551 }
552
553 void InitSig(void)
554 {
555         signal(SIGHUP, signal_handler);
556         signal(SIGINT, signal_handler);
557         signal(SIGQUIT, signal_handler);
558         signal(SIGILL, signal_handler);
559         signal(SIGTRAP, signal_handler);
560         signal(SIGIOT, signal_handler);
561         signal(SIGBUS, signal_handler);
562         signal(SIGFPE, signal_handler);
563         signal(SIGSEGV, signal_handler);
564         signal(SIGTERM, signal_handler);
565 }
566
567 void VID_Finish (void)
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         if (r_render.integer)
578         {
579                 CHECKGLERROR
580                 if (r_speeds.integer || gl_finish.integer)
581                 {
582                         qglFinish();CHECKGLERROR
583                 }
584                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
585         }
586
587         if (vid_x11_hardwaregammasupported)
588                 VID_UpdateGamma(false, vid_x11_gammarampsize);
589 }
590
591 int VID_SetGamma(unsigned short *ramps, int rampsize)
592 {
593         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
594 }
595
596 int VID_GetGamma(unsigned short *ramps, int rampsize)
597 {
598         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
599 }
600
601 void VID_Init(void)
602 {
603 #if !defined(__APPLE__) && !defined(SUNOS)
604         Cvar_RegisterVariable (&vid_dgamouse);
605 #endif
606         InitSig(); // trap evil signals
607 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
608         if (COM_CheckParm ("-nomouse"))
609                 mouse_avail = false;
610 }
611
612 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
613 {
614         *attrib++ = GLX_RGBA;
615         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
616         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
617         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
618         *attrib++ = GLX_DOUBLEBUFFER;
619         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
620         // if stencil is enabled, ask for alpha too
621         if (stencil)
622         {
623                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
624                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
625         }
626         if (stereobuffer)
627                 *attrib++ = GLX_STEREO;
628         if (samples > 1)
629         {
630                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
631                 *attrib++ = 1;
632                 *attrib++ = GLX_SAMPLES_ARB;
633                 *attrib++ = samples;
634         }
635         *attrib++ = None;
636 }
637
638 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
639 {
640         int i;
641         int attrib[32];
642         XSetWindowAttributes attr;
643         XClassHint *clshints;
644         XWMHints *wmhints;
645         XSizeHints *szhints;
646         unsigned long mask;
647         Window root;
648         XVisualInfo *visinfo;
649         int MajorVersion, MinorVersion;
650         const char *drivername;
651
652 #if defined(__APPLE__) && defined(__MACH__)
653         drivername = "/usr/X11R6/lib/libGL.1.dylib";
654 #else
655         drivername = "libGL.so.1";
656 #endif
657 // 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
658 // 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
659 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
660         i = COM_CheckParm("-gl_driver");
661         if (i && i < com_argc - 1)
662                 drivername = com_argv[i + 1];
663         if (!GL_OpenLibrary(drivername))
664         {
665                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
666                 return false;
667         }
668
669         if (!(vidx11_display = XOpenDisplay(NULL)))
670         {
671                 Con_Print("Couldn't open the X display\n");
672                 return false;
673         }
674
675         vidx11_screen = DefaultScreen(vidx11_display);
676         root = RootWindow(vidx11_display, vidx11_screen);
677
678         // Get video mode list
679         MajorVersion = MinorVersion = 0;
680         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
681                 vidmode_ext = false;
682         else
683         {
684                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
685                 vidmode_ext = true;
686         }
687
688         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
689          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
690          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
691          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
692          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
693          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
694         {
695                 Con_Printf("glX functions not found in %s\n", gl_driver);
696                 return false;
697         }
698
699         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
700         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
701         if (!visinfo && (samples == 1))
702         {
703                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
704                  * entirely without one */
705                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
706                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
707         }
708         if (!visinfo)
709         {
710                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
711                 return false;
712         }
713
714         if (vidmode_ext)
715         {
716                 int best_fit, best_dist, dist, x, y;
717
718                 // Are we going fullscreen?  If so, let's change video mode
719                 if (fullscreen)
720                 {
721                         XF86VidModeModeLine *current_vidmode;
722                         XF86VidModeModeInfo **vidmodes;
723                         int num_vidmodes;
724
725                         // This nice hack comes from the SDL source code
726                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
727                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
728
729                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
730                         best_dist = 9999999;
731                         best_fit = -1;
732
733                         for (i = 0; i < num_vidmodes; i++)
734                         {
735                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
736                                         continue;
737
738                                 x = width - vidmodes[i]->hdisplay;
739                                 y = height - vidmodes[i]->vdisplay;
740                                 dist = (x * x) + (y * y);
741                                 if (dist < best_dist)
742                                 {
743                                         best_dist = dist;
744                                         best_fit = i;
745                                 }
746                         }
747
748                         if (best_fit != -1)
749                         {
750                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
751                                 // to width/height =, so the window will take the full area of
752                                 // the mode chosen
753                                 width = vidmodes[best_fit]->hdisplay;
754                                 height = vidmodes[best_fit]->vdisplay;
755
756                                 // change to the mode
757                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
758                                 vid_isfullscreen = true;
759
760                                 // Move the viewport to top left
761                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
762                         }
763                         else
764                                 fullscreen = 0;
765
766                         free(vidmodes);
767                 }
768         }
769
770         // LordHavoc: save the visual for use in gamma ramp settings later
771         vidx11_visual = visinfo->visual;
772
773         /* window attributes */
774         attr.background_pixel = 0;
775         attr.border_pixel = 0;
776         // LordHavoc: save the colormap for later, too
777         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
778         attr.event_mask = X_MASK;
779         if (vid_isfullscreen)
780         {
781                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
782                 attr.override_redirect = True;
783                 attr.backing_store = NotUseful;
784                 attr.save_under = False;
785         }
786         else
787                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
788
789         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
790
791         wmhints = XAllocWMHints();
792         if(XpmCreatePixmapFromData(vidx11_display, win,
793                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
794                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
795                 wmhints->flags |= IconPixmapHint | IconMaskHint;
796
797         clshints = XAllocClassHint();
798         clshints->res_name = strdup(gamename);
799         clshints->res_class = strdup("DarkPlaces");
800
801         szhints = XAllocSizeHints();
802         if(vid_resizable.integer == 0)
803         {
804                 szhints->min_width = szhints->max_width = width;
805                 szhints->min_height = szhints->max_height = height;
806                 szhints->flags |= PMinSize | PMaxSize;
807         }
808
809         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
810         XFree(clshints);
811         XFree(wmhints);
812         XFree(szhints);
813         //XStoreName(vidx11_display, win, gamename);
814         XMapWindow(vidx11_display, win);
815
816         // LordHavoc: making the close button on a window do the right thing
817         // seems to involve this mess, sigh...
818         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
819         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
820
821         if (vid_isfullscreen)
822         {
823                 XMoveWindow(vidx11_display, win, 0, 0);
824                 XRaiseWindow(vidx11_display, win);
825                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
826                 XFlush(vidx11_display);
827                 // Move the viewport to top left
828                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
829         }
830
831         //XSync(vidx11_display, False);
832
833         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
834         if (!ctx)
835         {
836                 Con_Printf ("glXCreateContext failed\n");
837                 return false;
838         }
839
840         if (!qglXMakeCurrent(vidx11_display, win, ctx))
841         {
842                 Con_Printf ("glXMakeCurrent failed\n");
843                 return false;
844         }
845
846         XSync(vidx11_display, False);
847
848         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
849         {
850                 Con_Printf ("glGetString not found in %s\n", gl_driver);
851                 return false;
852         }
853
854         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
855         gl_platform = "GLX";
856         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
857
858         gl_videosyncavailable = false;
859
860 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
861 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
862 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
863         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
864 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
865 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
866 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
867         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
868
869         vid_usingmouse = false;
870         vid_usingvsync = false;
871         vid_hidden = false;
872         vid_activewindow = true;
873         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
874 #if !defined(__APPLE__) && !defined(SUNOS)
875         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
876         if (!vid_x11_dgasupported)
877                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
878 #endif
879         GL_Init();
880         return true;
881 }
882
883 void Sys_SendKeyEvents(void)
884 {
885         static qboolean sound_active = true;
886
887         // enable/disable sound on focus gain/loss
888         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
889         {
890                 if (!sound_active)
891                 {
892                         S_UnblockSound ();
893                         sound_active = true;
894                 }
895         }
896         else
897         {
898                 if (sound_active)
899                 {
900                         S_BlockSound ();
901                         sound_active = false;
902                 }
903         }
904
905         HandleEvents();
906 }
907
908 void IN_Move (void)
909 {
910 }