modified gamma handling, now VID_UpdateGamma is only called from VID_Finish, and...
[xonotic/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 float    mouse_x, mouse_y;
97 static int p_mouse_x, p_mouse_y;
98
99 #if !defined(__APPLE__) && !defined(SUNOS)
100 // 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)
101 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1", "make use of DGA mouse input"};
102 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1", "speed of mouse when using DGA mouse input"};
103 #endif
104
105 qboolean vidmode_ext = false;
106
107 static int win_x, win_y;
108
109 static XF86VidModeModeInfo init_vidmode;
110 static qboolean vid_isfullscreen = false;
111
112 static Visual *vidx11_visual;
113 static Colormap vidx11_colormap;
114
115 /*-----------------------------------------------------------------------*/
116
117 static int XLateKey(XKeyEvent *ev, char *ascii)
118 {
119         int key = 0;
120         char buf[64];
121         KeySym keysym, shifted;
122
123         keysym = XLookupKeysym (ev, 0);
124         XLookupString(ev, buf, sizeof buf, &shifted, 0);
125         *ascii = buf[0];
126
127         switch(keysym)
128         {
129                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
130                 case XK_Page_Up:         key = K_PGUP; break;
131
132                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
133                 case XK_Page_Down:       key = K_PGDN; break;
134
135                 case XK_KP_Home: key = K_KP_HOME; break;
136                 case XK_Home:    key = K_HOME; break;
137
138                 case XK_KP_End:  key = K_KP_END; break;
139                 case XK_End:     key = K_END; break;
140
141                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
142                 case XK_Left:    key = K_LEFTARROW; break;
143
144                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
145                 case XK_Right:  key = K_RIGHTARROW;             break;
146
147                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
148                 case XK_Down:    key = K_DOWNARROW; break;
149
150                 case XK_KP_Up:   key = K_KP_UPARROW; break;
151                 case XK_Up:              key = K_UPARROW;        break;
152
153                 case XK_Escape: key = K_ESCAPE;         break;
154
155                 case XK_KP_Enter: key = K_KP_ENTER;     break;
156                 case XK_Return: key = K_ENTER;           break;
157
158                 case XK_Tab:            key = K_TAB;                     break;
159
160                 case XK_F1:              key = K_F1;                            break;
161
162                 case XK_F2:              key = K_F2;                            break;
163
164                 case XK_F3:              key = K_F3;                            break;
165
166                 case XK_F4:              key = K_F4;                            break;
167
168                 case XK_F5:              key = K_F5;                            break;
169
170                 case XK_F6:              key = K_F6;                            break;
171
172                 case XK_F7:              key = K_F7;                            break;
173
174                 case XK_F8:              key = K_F8;                            break;
175
176                 case XK_F9:              key = K_F9;                            break;
177
178                 case XK_F10:            key = K_F10;                     break;
179
180                 case XK_F11:            key = K_F11;                     break;
181
182                 case XK_F12:            key = K_F12;                     break;
183
184                 case XK_BackSpace: key = K_BACKSPACE; break;
185
186                 case XK_KP_Delete: key = K_KP_DEL; break;
187                 case XK_Delete: key = K_DEL; break;
188
189                 case XK_Pause:  key = K_PAUSE;           break;
190
191                 case XK_Shift_L:
192                 case XK_Shift_R:        key = K_SHIFT;          break;
193
194                 case XK_Execute:
195                 case XK_Control_L:
196                 case XK_Control_R:      key = K_CTRL;            break;
197
198                 case XK_Alt_L:
199                 case XK_Meta_L:
200                 case XK_Alt_R:
201                 case XK_Meta_R: key = K_ALT;                    break;
202
203                 case XK_KP_Begin: key = K_KP_5; break;
204
205                 case XK_Insert:key = K_INS; break;
206                 case XK_KP_Insert: key = K_KP_INS; break;
207
208                 case XK_KP_Multiply: key = '*'; break;
209                 case XK_KP_Add:  key = K_KP_PLUS; break;
210                 case XK_KP_Subtract: key = K_KP_MINUS; break;
211                 case XK_KP_Divide: key = K_KP_SLASH; break;
212
213                 case XK_section:        key = '~'; break;
214
215                 default:
216                         if (keysym < 32)
217                                 break;
218
219                         if (keysym >= 'A' && keysym <= 'Z')
220                                 key = keysym - 'A' + 'a';
221                         else
222                                 key = keysym;
223
224                         break;
225         }
226
227         return key;
228 }
229
230 static Cursor CreateNullCursor(Display *display, Window root)
231 {
232         Pixmap cursormask;
233         XGCValues xgc;
234         GC gc;
235         XColor dummycolour;
236         Cursor cursor;
237
238         cursormask = XCreatePixmap(display, root, 1, 1, 1);
239         xgc.function = GXclear;
240         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
241         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
242         dummycolour.pixel = 0;
243         dummycolour.red = 0;
244         dummycolour.flags = 04;
245         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
246         XFreePixmap(display,cursormask);
247         XFreeGC(display,gc);
248         return cursor;
249 }
250
251 static void IN_Activate (qboolean grab)
252 {
253         if (!vidx11_display)
254                 return;
255         if (grab)
256         {
257                 if (!vid_usingmouse && mouse_avail && win)
258                 {
259                         XWindowAttributes attribs_1;
260                         XSetWindowAttributes attribs_2;
261
262                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
263                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
264                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
265
266                 // inviso cursor
267                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
268
269                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
270
271 #if !defined(__APPLE__) && !defined(SUNOS)
272                         if (vid_dga.integer)
273                         {
274                                 int MajorVersion, MinorVersion;
275
276                                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
277                                 {
278                                         // unable to query, probably not supported
279                                         Con_Print( "Failed to detect XF86DGA Mouse\n" );
280                                         Cvar_SetValueQuick(&vid_dga, 0);
281                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
282                                 }
283                                 else
284                                 {
285                                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
286                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
287                                 }
288                         }
289                         else
290 #endif
291                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
292
293                         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
294
295                         mouse_x = mouse_y = 0;
296                         cl_ignoremousemove = true;
297                         vid_usingmouse = true;
298                 }
299         }
300         else
301         {
302                 if (vid_usingmouse)
303                 {
304 #if !defined(__APPLE__) && !defined(SUNOS)
305                         if (vid_dga.integer)
306                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
307 #endif
308
309                         XUngrabPointer(vidx11_display, CurrentTime);
310                         XUngrabKeyboard(vidx11_display, CurrentTime);
311
312                         // inviso cursor
313                         if (win)
314                                 XUndefineCursor(vidx11_display, win);
315
316                         cl_ignoremousemove = true;
317                         vid_usingmouse = false;
318                 }
319         }
320 }
321
322 static keynum_t buttonremap[18] =
323 {
324         K_MOUSE1,
325         K_MOUSE3,
326         K_MOUSE2,
327         K_MWHEELUP,
328         K_MWHEELDOWN,
329         K_MOUSE4,
330         K_MOUSE5,
331         K_MOUSE6,
332         K_MOUSE7,
333         K_MOUSE8,
334         K_MOUSE9,
335         K_MOUSE10,
336         K_MOUSE11,
337         K_MOUSE12,
338         K_MOUSE13,
339         K_MOUSE14,
340         K_MOUSE15,
341         K_MOUSE16,
342 };
343
344 static void HandleEvents(void)
345 {
346         XEvent event;
347         int key;
348         char ascii;
349         qboolean dowarp = false;
350
351         if (!vidx11_display)
352                 return;
353
354         while (XPending(vidx11_display))
355         {
356                 XNextEvent(vidx11_display, &event);
357
358                 switch (event.type)
359                 {
360                 case KeyPress:
361                         // key pressed
362                         key = XLateKey (&event.xkey, &ascii);
363                         Key_Event(key, ascii, true);
364                         break;
365
366                 case KeyRelease:
367                         // key released
368                         key = XLateKey (&event.xkey, &ascii);
369                         Key_Event(key, ascii, false);
370                         break;
371
372                 case MotionNotify:
373                         // mouse moved
374                         if (vid_usingmouse)
375                         {
376 #if !defined(__APPLE__) && !defined(SUNOS)
377                                 if (vid_dga.integer == 1)
378                                 {
379                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
380                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
381                                 }
382                                 else
383 #endif
384                                 {
385
386                                         if (!event.xmotion.send_event)
387                                         {
388                                                 mouse_x += event.xmotion.x - p_mouse_x;
389                                                 mouse_y += event.xmotion.y - p_mouse_y;
390                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
391                                                         dowarp = true;
392                                         }
393                                         p_mouse_x = event.xmotion.x;
394                                         p_mouse_y = event.xmotion.y;
395                                 }
396                         }
397                         //else
398                         //      ui_mouseupdate(event.xmotion.x, event.xmotion.y);
399                         break;
400
401                 case ButtonPress:
402                         // mouse button pressed
403                         if (event.xbutton.button <= 18)
404                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
405                         else
406                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
407                         break;
408
409                 case ButtonRelease:
410                         // mouse button released
411                         if (event.xbutton.button <= 18)
412                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
413                         else
414                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
415                         break;
416
417                 case CreateNotify:
418                         // window created
419                         win_x = event.xcreatewindow.x;
420                         win_y = event.xcreatewindow.y;
421                         break;
422
423                 case ConfigureNotify:
424                         // window changed size/location
425                         win_x = event.xconfigure.x;
426                         win_y = event.xconfigure.y;
427                         break;
428                 case DestroyNotify:
429                         // window has been destroyed
430                         Sys_Quit();
431                         break;
432                 case ClientMessage:
433                         // window manager messages
434                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
435                                 Sys_Quit();
436                         break;
437                 case MapNotify:
438                         // window restored
439                         vid_hidden = false;
440                         vid_activewindow = false;
441                         VID_RestoreSystemGamma();
442                         break;
443                 case UnmapNotify:
444                         // window iconified/rolledup/whatever
445                         vid_hidden = true;
446                         vid_activewindow = false;
447                         VID_RestoreSystemGamma();
448                         break;
449                 case FocusIn:
450                         // window is now the input focus
451                         vid_activewindow = true;
452                         break;
453                 case FocusOut:
454                         // window is no longer the input focus
455                         vid_activewindow = false;
456                         VID_RestoreSystemGamma();
457                         break;
458                 case EnterNotify:
459                         // mouse entered window
460                         break;
461                 case LeaveNotify:
462                         // mouse left window
463                         break;
464                 }
465         }
466
467         if (dowarp)
468         {
469                 /* move the mouse to the window center again */
470                 p_mouse_x = vid.width / 2;
471                 p_mouse_y = vid.height / 2;
472                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
473         }
474 }
475
476 static void *prjobj = NULL;
477
478 static void GL_CloseLibrary(void)
479 {
480         if (prjobj)
481                 dlclose(prjobj);
482         prjobj = NULL;
483         gl_driver[0] = 0;
484         qglXGetProcAddressARB = NULL;
485         gl_extensions = "";
486         gl_platform = "";
487         gl_platformextensions = "";
488 }
489
490 static int GL_OpenLibrary(const char *name)
491 {
492         Con_Printf("Loading OpenGL driver %s\n", name);
493         GL_CloseLibrary();
494         if (!(prjobj = dlopen(name, RTLD_LAZY)))
495         {
496                 Con_Printf("Unable to open symbol list for %s\n", name);
497                 return false;
498         }
499         strcpy(gl_driver, name);
500         return true;
501 }
502
503 void *GL_GetProcAddress(const char *name)
504 {
505         void *p = NULL;
506         if (qglXGetProcAddressARB != NULL)
507                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
508         if (p == NULL)
509                 p = (void *) dlsym(prjobj, name);
510         return p;
511 }
512
513 void VID_Shutdown(void)
514 {
515         if (!ctx || !vidx11_display)
516                 return;
517
518         if (vidx11_display)
519         {
520                 IN_Activate(false);
521                 VID_RestoreSystemGamma();
522
523                 // FIXME: glXDestroyContext here?
524                 if (vid_isfullscreen)
525                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
526                 if (win)
527                         XDestroyWindow(vidx11_display, win);
528                 XCloseDisplay(vidx11_display);
529         }
530         vid_hidden = true;
531         vid_isfullscreen = false;
532         vidx11_display = NULL;
533         win = 0;
534         ctx = NULL;
535
536         GL_CloseLibrary();
537         Key_ClearStates ();
538 }
539
540 void signal_handler(int sig)
541 {
542         Con_Printf("Received signal %d, exiting...\n", sig);
543         VID_RestoreSystemGamma();
544         Sys_Quit();
545         exit(0);
546 }
547
548 void InitSig(void)
549 {
550         signal(SIGHUP, signal_handler);
551         signal(SIGINT, signal_handler);
552         signal(SIGQUIT, signal_handler);
553         signal(SIGILL, signal_handler);
554         signal(SIGTRAP, signal_handler);
555         signal(SIGIOT, signal_handler);
556         signal(SIGBUS, signal_handler);
557         signal(SIGFPE, signal_handler);
558         signal(SIGSEGV, signal_handler);
559         signal(SIGTERM, signal_handler);
560 }
561
562 void VID_Finish (qboolean allowmousegrab)
563 {
564         int rampsize;
565         qboolean vid_usemouse;
566
567         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
568         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
569         {
570                 vid_usingvsync = vid_usevsync;
571                 if (qglXSwapIntervalSGI (vid_usevsync))
572                         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");
573         }
574
575 // handle the mouse state when windowed if that's changed
576         vid_usemouse = false;
577         if (allowmousegrab && vid_mouse.integer && !key_consoleactive && !cls.demoplayback)
578                 vid_usemouse = true;
579         if (!vid_activewindow)
580                 vid_usemouse = false;
581         if (vid_isfullscreen)
582                 vid_usemouse = true;
583         IN_Activate(vid_usemouse);
584
585         if (r_render.integer)
586         {
587                 if (r_speeds.integer || gl_finish.integer)
588                         qglFinish();
589                 qglXSwapBuffers(vidx11_display, win);
590         }
591
592         if(XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &rampsize))
593                 VID_UpdateGamma(false, rampsize);
594 }
595
596 int VID_SetGamma(unsigned short *ramps, int rampsize)
597 {
598         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
599 }
600
601 int VID_GetGamma(unsigned short *ramps, int rampsize)
602 {
603         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
604 }
605
606 void VID_Init(void)
607 {
608 #if !defined(__APPLE__) && !defined(SUNOS)
609         Cvar_RegisterVariable (&vid_dga);
610         Cvar_RegisterVariable (&vid_dga_mouseaccel);
611 #endif
612         InitSig(); // trap evil signals
613 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
614         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
615                 mouse_avail = false;
616 }
617
618 void VID_BuildGLXAttrib(int *attrib, int stencil)
619 {
620         *attrib++ = GLX_RGBA;
621         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
622         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
623         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
624         *attrib++ = GLX_DOUBLEBUFFER;
625         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
626         // if stencil is enabled, ask for alpha too
627         if (stencil)
628         {
629                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
630                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
631         }
632         *attrib++ = None;
633 }
634
635 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate)
636 {
637         int i;
638         int attrib[32];
639         XSetWindowAttributes attr;
640         unsigned long mask;
641         Window root;
642         XVisualInfo *visinfo;
643         int MajorVersion, MinorVersion;
644         const char *drivername;
645
646 #if defined(__APPLE__) && defined(__MACH__)
647         drivername = "/usr/X11R6/lib/libGL.1.dylib";
648 #else
649         drivername = "libGL.so.1";
650 #endif
651 // COMMANDLINEOPTION: Linux GLX: -gl_driver <drivername> selects a GL driver library, default is libGL.so.1, useful only for using fxmesa or similar, if you don't know what this is for, you don't need it
652 // COMMANDLINEOPTION: BSD GLX: -gl_driver <drivername> selects a GL driver library, default is libGL.so.1, useful only for using fxmesa or similar, if you don't know what this is for, you don't need it
653 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
654         i = COM_CheckParm("-gl_driver");
655         if (i && i < com_argc - 1)
656                 drivername = com_argv[i + 1];
657         if (!GL_OpenLibrary(drivername))
658         {
659                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
660                 return false;
661         }
662
663         if (!(vidx11_display = XOpenDisplay(NULL)))
664         {
665                 Con_Print("Couldn't open the X display\n");
666                 return false;
667         }
668
669         vidx11_screen = DefaultScreen(vidx11_display);
670         root = RootWindow(vidx11_display, vidx11_screen);
671
672         // Get video mode list
673         MajorVersion = MinorVersion = 0;
674         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
675                 vidmode_ext = false;
676         else
677         {
678                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
679                 vidmode_ext = true;
680         }
681
682         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
683          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
684          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
685          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
686          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
687          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
688         {
689                 Con_Printf("glX functions not found in %s\n", gl_driver);
690                 return false;
691         }
692
693         VID_BuildGLXAttrib(attrib, bpp == 32);
694         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
695         if (!visinfo)
696         {
697                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
698                 return false;
699         }
700
701         if (vidmode_ext)
702         {
703                 int best_fit, best_dist, dist, x, y;
704
705                 // Are we going fullscreen?  If so, let's change video mode
706                 if (fullscreen)
707                 {
708                         XF86VidModeModeLine *current_vidmode;
709                         XF86VidModeModeInfo **vidmodes;
710                         int num_vidmodes;
711
712                         // This nice hack comes from the SDL source code
713                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
714                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
715
716                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
717                         best_dist = 9999999;
718                         best_fit = -1;
719
720                         for (i = 0; i < num_vidmodes; i++)
721                         {
722                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
723                                         continue;
724
725                                 x = width - vidmodes[i]->hdisplay;
726                                 y = height - vidmodes[i]->vdisplay;
727                                 dist = (x * x) + (y * y);
728                                 if (dist < best_dist)
729                                 {
730                                         best_dist = dist;
731                                         best_fit = i;
732                                 }
733                         }
734
735                         if (best_fit != -1)
736                         {
737                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
738                                 // to width/height =, so the window will take the full area of
739                                 // the mode chosen
740                                 width = vidmodes[best_fit]->hdisplay;
741                                 height = vidmodes[best_fit]->vdisplay;
742
743                                 // change to the mode
744                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
745                                 vid_isfullscreen = true;
746
747                                 // Move the viewport to top left
748                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
749                         }
750                         else
751                                 fullscreen = 0;
752
753                         free(vidmodes);
754                 }
755         }
756
757         // LordHavoc: save the visual for use in gamma ramp settings later
758         vidx11_visual = visinfo->visual;
759
760         /* window attributes */
761         attr.background_pixel = 0;
762         attr.border_pixel = 0;
763         // LordHavoc: save the colormap for later, too
764         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
765         attr.event_mask = X_MASK;
766         if (vid_isfullscreen)
767         {
768                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
769                 attr.override_redirect = True;
770                 attr.backing_store = NotUseful;
771                 attr.save_under = False;
772         }
773         else
774                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
775
776         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
777         XStoreName(vidx11_display, win, gamename);
778         XMapWindow(vidx11_display, win);
779
780         // LordHavoc: making the close button on a window do the right thing
781         // seems to involve this mess, sigh...
782         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
783         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
784
785         if (vid_isfullscreen)
786         {
787                 XMoveWindow(vidx11_display, win, 0, 0);
788                 XRaiseWindow(vidx11_display, win);
789                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
790                 XFlush(vidx11_display);
791                 // Move the viewport to top left
792                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
793         }
794
795         //XSync(vidx11_display, False);
796
797         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
798         if (!ctx)
799         {
800                 Con_Printf ("glXCreateContext failed\n");
801                 return false;
802         }
803
804         if (!qglXMakeCurrent(vidx11_display, win, ctx))
805         {
806                 Con_Printf ("glXMakeCurrent failed\n");
807                 return false;
808         }
809
810         XSync(vidx11_display, False);
811
812         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
813         {
814                 Con_Printf ("glGetString not found in %s\n", gl_driver);
815                 return false;
816         }
817
818         gl_renderer = (const char *)qglGetString(GL_RENDERER);
819         gl_vendor = (const char *)qglGetString(GL_VENDOR);
820         gl_version = (const char *)qglGetString(GL_VERSION);
821         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
822         gl_platform = "GLX";
823         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
824
825         gl_videosyncavailable = false;
826
827 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
828 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
829 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
830         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
831 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
832 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
833 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
834         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
835
836         vid_usingmouse = false;
837         vid_usingvsync = false;
838         vid_hidden = false;
839         vid_activewindow = true;
840         GL_Init();
841         return true;
842 }
843
844 void Sys_SendKeyEvents(void)
845 {
846         HandleEvents();
847 }
848
849 void IN_Move (void)
850 {
851         if (mouse_avail)
852         {
853                 in_mouse_x = mouse_x;
854                 in_mouse_y = mouse_y;
855         }
856         mouse_x = 0;
857         mouse_y = 0;
858 }