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 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
  21 //#define USEDGA
  22 #endif
  23
  24 #include <signal.h>
  25
  26 #include <dlfcn.h>
  27
  28 #include <X11/Xlib.h>
  29 #include <X11/Xutil.h>
  30 #include <X11/Xatom.h>
  31 #include <X11/XKBlib.h> // TODO possibly ifdef this out on non-supporting systems... Solaris (as always)?
  32 #include <GL/glx.h>
  33
  34 #include "quakedef.h"
  35 #include "dpsoftrast.h"
  36
  37 #include <X11/keysym.h>
  38 #include <X11/cursorfont.h>
  39 #include <X11/xpm.h>
  40
  41 #include <X11/extensions/XShm.h>
  42 #ifdef USEDGA
  43 #include <X11/extensions/xf86dga.h>
  44 #endif
  45 #include <X11/extensions/xf86vmode.h>
  46
  47 #include <sys/ipc.h>
  48 #include <sys/shm.h>
  49 #include <X11/extensions/XShm.h>
  50
  51 // get the Uchar type
  52 #include "utf8lib.h"
  53 #include "image.h"
  54
  55 #include "nexuiz.xpm"
  56 #include "darkplaces.xpm"
  57
  58 // Tell startup code that we have a client
  59 int cl_available = true;
  60
  61 // note: if we used the XRandR extension we could support refresh rates
  62 qboolean vid_supportrefreshrate = false;
  63
  64 //GLX prototypes
  65 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  66 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  67 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  68 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  69 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  70 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  71
  72 //GLX_ARB_get_proc_address
  73 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  74
  75 static dllfunction_t getprocaddressfuncs[] =
  76 {
  77         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  78         {NULL, NULL}
  79 };
  80
  81 //GLX_SGI_swap_control
  82 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  83
  84 static dllfunction_t swapcontrolfuncs[] =
  85 {
  86         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  87         {NULL, NULL}
  88 };
  89
  90 static Display *vidx11_display = NULL;
  91 static int vidx11_screen;
  92 static Window win, root;
  93 static GLXContext ctx = NULL;
  94 static GC vidx11_gc = NULL;
  95 static XImage *vidx11_ximage[2] = { NULL, NULL };
  96 static int vidx11_ximage_pos = 0;
  97 static XShmSegmentInfo vidx11_shminfo[2];
  98 static int vidx11_shmevent = -1;
  99 static int vidx11_shmwait = 0; // number of frames outstanding
 100
 101 Atom wm_delete_window_atom;
 102 Atom net_wm_state_atom;
 103 Atom net_wm_state_hidden_atom;
 104 Atom net_wm_state_fullscreen_atom;
 105 Atom net_wm_icon;
 106 Atom cardinal;
 107
 108 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
 109 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
 110                     PointerMotionMask | ButtonMotionMask)
 111 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
 112                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
 113                 LeaveWindowMask)
 114
 115
 116 static qboolean mouse_avail = true;
 117 static qboolean vid_usingmousegrab = false;
 118 static qboolean vid_usingmouse = false;
 119 static qboolean vid_usinghidecursor = false;
 120 static qboolean vid_usingvsync = false;
 121 static qboolean vid_usevsync = false;
 122 static qboolean vid_x11_hardwaregammasupported = false;
 123 #ifdef USEDGA
 124 static qboolean vid_x11_dgasupported = false;
 125 #endif
 126 static int vid_x11_gammarampsize = 0;
 127
 128 #ifdef USEDGA
 129 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "0", "make use of DGA mouse input"};
 130 static qboolean vid_usingdgamouse = false;
 131 #endif
 132 cvar_t vid_netwmfullscreen = {CVAR_SAVE, "vid_netwmfullscreen", "0", "make use _NET_WM_STATE_FULLSCREEN; turn this off if fullscreen does not work for you"};
 133
 134 qboolean vidmode_ext = false;
 135
 136 static int win_x, win_y;
 137
 138 static XF86VidModeModeInfo init_vidmode, game_vidmode;
 139 static qboolean vid_isfullscreen = false;
 140 static qboolean vid_isvidmodefullscreen = false;
 141 static qboolean vid_isnetwmfullscreen = false;
 142 static qboolean vid_isoverrideredirect = false;
 143
 144 static Visual *vidx11_visual;
 145 static Colormap vidx11_colormap;
 146
 147 /*-----------------------------------------------------------------------*/
 148 //
 149
 150 extern long keysym2ucs(KeySym keysym); // LordHavoc: suppress warning just in this case, it's not worth having a header file for this...
 151 static void DP_Xutf8LookupString(XKeyEvent * ev,
 152                          Uchar *uch,
 153                          KeySym * keysym_return,
 154                          Status * status_return)
 155 {
 156         int rc;
 157         KeySym keysym;
 158         int codepoint;
 159         char buffer[64];
 160         int nbytes = sizeof(buffer);
 161
 162         rc = XLookupString(ev, buffer, nbytes, &keysym, NULL);
 163
 164         if (rc > 0) {
 165                 codepoint = buffer[0] & 0xFF;
 166         } else {
 167                 codepoint = keysym2ucs(keysym);
 168         }
 169
 170         if (codepoint < 0) {
 171                 if (keysym == None) {
 172                         *status_return = XLookupNone;
 173                 } else {
 174                         *status_return = XLookupKeySym;
 175                         *keysym_return = keysym;
 176                 }
 177                 *uch = 0;
 178                 return;
 179         }
 180
 181         *uch = codepoint;
 182
 183         if (keysym != None) {
 184                 *keysym_return = keysym;
 185                 *status_return = XLookupBoth;
 186         } else {
 187                 *status_return = XLookupChars;
 188         }
 189 }
 190 static int XLateKey(XKeyEvent *ev, Uchar *ascii)
 191 {
 192         int key = 0;
 193         //char buf[64];
 194         KeySym keysym, shifted;
 195         Status status;
 196
 197         keysym = XLookupKeysym (ev, 0);
 198         DP_Xutf8LookupString(ev, ascii, &shifted, &status);
 199
 200         switch(keysym)
 201         {
 202                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 203                 case XK_Page_Up:         key = K_PGUP; break;
 204
 205                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 206                 case XK_Page_Down:       key = K_PGDN; break;
 207
 208                 case XK_KP_Home: key = K_KP_HOME; break;
 209                 case XK_Home:    key = K_HOME; break;
 210
 211                 case XK_KP_End:  key = K_KP_END; break;
 212                 case XK_End:     key = K_END; break;
 213
 214                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 215                 case XK_Left:    key = K_LEFTARROW; break;
 216
 217                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 218                 case XK_Right:  key = K_RIGHTARROW;             break;
 219
 220                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 221                 case XK_Down:    key = K_DOWNARROW; break;
 222
 223                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 224                 case XK_Up:              key = K_UPARROW;        break;
 225
 226                 case XK_Escape: key = K_ESCAPE;         break;
 227
 228                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 229                 case XK_Return: key = K_ENTER;           break;
 230
 231                 case XK_Tab:            key = K_TAB;                     break;
 232
 233                 case XK_F1:              key = K_F1;                            break;
 234
 235                 case XK_F2:              key = K_F2;                            break;
 236
 237                 case XK_F3:              key = K_F3;                            break;
 238
 239                 case XK_F4:              key = K_F4;                            break;
 240
 241                 case XK_F5:              key = K_F5;                            break;
 242
 243                 case XK_F6:              key = K_F6;                            break;
 244
 245                 case XK_F7:              key = K_F7;                            break;
 246
 247                 case XK_F8:              key = K_F8;                            break;
 248
 249                 case XK_F9:              key = K_F9;                            break;
 250
 251                 case XK_F10:            key = K_F10;                     break;
 252
 253                 case XK_F11:            key = K_F11;                     break;
 254
 255                 case XK_F12:            key = K_F12;                     break;
 256
 257                 case XK_BackSpace: key = K_BACKSPACE; break;
 258
 259                 case XK_KP_Delete: key = K_KP_DEL; break;
 260                 case XK_Delete: key = K_DEL; break;
 261
 262                 case XK_Pause:  key = K_PAUSE;           break;
 263
 264                 case XK_Shift_L:
 265                 case XK_Shift_R:        key = K_SHIFT;          break;
 266
 267                 case XK_Execute:
 268                 case XK_Control_L:
 269                 case XK_Control_R:      key = K_CTRL;            break;
 270
 271                 case XK_Alt_L:
 272                 case XK_Meta_L:
 273                 case XK_ISO_Level3_Shift:
 274                 case XK_Alt_R:
 275                 case XK_Meta_R: key = K_ALT;                    break;
 276
 277                 case XK_KP_Begin: key = K_KP_5; break;
 278
 279                 case XK_Insert:key = K_INS; break;
 280                 case XK_KP_Insert: key = K_KP_INS; break;
 281
 282                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 283                 case XK_KP_Add:  key = K_KP_PLUS; break;
 284                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 285                 case XK_KP_Divide: key = K_KP_SLASH; break;
 286
 287                 case XK_asciicircum:    *ascii = key = '^'; break; // for some reason, XLookupString returns "" on this one for Grunt|2
 288
 289                 case XK_section:        *ascii = key = '~'; break;
 290
 291                 default:
 292                         if (keysym < 32)
 293                                 break;
 294
 295                         if (keysym >= 'A' && keysym <= 'Z')
 296                                 key = keysym - 'A' + 'a';
 297                         else
 298                                 key = keysym;
 299
 300                         break;
 301         }
 302
 303         return key;
 304 }
 305
 306 static Cursor CreateNullCursor(Display *display, Window root)
 307 {
 308         Pixmap cursormask;
 309         XGCValues xgc;
 310         GC gc;
 311         XColor dummycolour;
 312         Cursor cursor;
 313
 314         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 315         xgc.function = GXclear;
 316         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 317         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 318         dummycolour.pixel = 0;
 319         dummycolour.red = 0;
 320         dummycolour.flags = 04;
 321         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 322         XFreePixmap(display,cursormask);
 323         XFreeGC(display,gc);
 324         return cursor;
 325 }
 326
 327 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 328 {
 329         static int originalmouseparms_num;
 330         static int originalmouseparms_denom;
 331         static int originalmouseparms_threshold;
 332         static qboolean restore_spi;
 333
 334 #ifdef USEDGA
 335         qboolean usedgamouse;
 336 #endif
 337
 338         if (!vidx11_display || !win)
 339                 return;
 340
 341         if (relative)
 342                 fullscreengrab = true;
 343
 344         if (!mouse_avail)
 345                 fullscreengrab = relative = hidecursor = false;
 346
 347 #ifdef USEDGA
 348         usedgamouse = relative && vid_dgamouse.integer;
 349         if (!vid_x11_dgasupported)
 350                 usedgamouse = false;
 351         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 352                 VID_SetMouse(false, false, false); // ungrab first!
 353 #endif
 354
 355         if (vid_usingmousegrab != fullscreengrab)
 356         {
 357                 vid_usingmousegrab = fullscreengrab;
 358                 cl_ignoremousemoves = 2;
 359                 if (fullscreengrab)
 360                 {
 361                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 362                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 363                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 364                 }
 365                 else
 366                 {
 367                         XUngrabPointer(vidx11_display, CurrentTime);
 368                         XUngrabKeyboard(vidx11_display, CurrentTime);
 369                 }
 370         }
 371
 372         if (relative)
 373         {
 374                 if (!vid_usingmouse)
 375                 {
 376                         XWindowAttributes attribs_1;
 377                         XSetWindowAttributes attribs_2;
 378
 379                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 380                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 381                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 382
 383 #ifdef USEDGA
 384                         vid_usingdgamouse = usedgamouse;
 385                         if (usedgamouse)
 386                         {
 387                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 388                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 389                         }
 390                         else
 391 #endif
 392                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 393
 394 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 395 #ifdef USEDGA
 396                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 397 #else
 398                         if (!COM_CheckParm ("-noforcemparms"))
 399 #endif
 400                         {
 401                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 402                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 403                                 restore_spi = true;
 404                         }
 405                         else
 406                                 restore_spi = false;
 407
 408                         cl_ignoremousemoves = 2;
 409                         vid_usingmouse = true;
 410                 }
 411         }
 412         else
 413         {
 414                 if (vid_usingmouse)
 415                 {
 416 #ifdef USEDGA
 417                         if (vid_usingdgamouse)
 418                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 419                         vid_usingdgamouse = false;
 420 #endif
 421                         cl_ignoremousemoves = 2;
 422
 423                         if (restore_spi)
 424                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 425                         restore_spi = false;
 426
 427                         vid_usingmouse = false;
 428                 }
 429         }
 430
 431         if (vid_usinghidecursor != hidecursor)
 432         {
 433                 vid_usinghidecursor = hidecursor;
 434                 if (hidecursor)
 435                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 436                 else
 437                         XUndefineCursor(vidx11_display, win);
 438         }
 439 }
 440
 441 static keynum_t buttonremap[18] =
 442 {
 443         K_MOUSE1,
 444         K_MOUSE3,
 445         K_MOUSE2,
 446         K_MWHEELUP,
 447         K_MWHEELDOWN,
 448         K_MOUSE4,
 449         K_MOUSE5,
 450         K_MOUSE6,
 451         K_MOUSE7,
 452         K_MOUSE8,
 453         K_MOUSE9,
 454         K_MOUSE10,
 455         K_MOUSE11,
 456         K_MOUSE12,
 457         K_MOUSE13,
 458         K_MOUSE14,
 459         K_MOUSE15,
 460         K_MOUSE16,
 461 };
 462
 463 static qboolean BuildXImages(int w, int h)
 464 {
 465         int i;
 466         if(DefaultDepth(vidx11_display, vidx11_screen) != 32 && DefaultDepth(vidx11_display, vidx11_screen) != 24)
 467         {
 468                 Con_Printf("Sorry, we only support 24bpp and 32bpp modes\n");
 469                 VID_Shutdown();
 470                 return false;
 471         }
 472         // match to dpsoftrast's specs
 473         if(vidx11_visual->red_mask != 0x00FF0000)
 474         {
 475                 Con_Printf("Sorry, we only support BGR visuals\n");
 476                 VID_Shutdown();
 477                 return false;
 478         }
 479         if(vidx11_visual->green_mask != 0x0000FF00)
 480         {
 481                 Con_Printf("Sorry, we only support BGR visuals\n");
 482                 VID_Shutdown();
 483                 return false;
 484         }
 485         if(vidx11_visual->blue_mask != 0x000000FF)
 486         {
 487                 Con_Printf("Sorry, we only support BGR visuals\n");
 488                 VID_Shutdown();
 489                 return false;
 490         }
 491         if(vidx11_shmevent >= 0)
 492         {
 493                 for(i = 0; i < 2; ++i)
 494                 {
 495                         vidx11_shminfo[i].shmid = -1;
 496                         vidx11_ximage[i] = XShmCreateImage(vidx11_display, vidx11_visual, DefaultDepth(vidx11_display, vidx11_screen), ZPixmap, NULL, &vidx11_shminfo[i], w, h);
 497                         if(!vidx11_ximage[i])
 498                         {
 499                                 Con_Printf("Failed to get an XImage segment\n");
 500                                 VID_Shutdown();
 501                                 return false;
 502                         }
 503                         if(vidx11_ximage[i]->bytes_per_line != w * 4)
 504                         {
 505                                 Con_Printf("Sorry, we only support linear pixel layout\n");
 506                                 VID_Shutdown();
 507                                 return false;
 508                         }
 509                         vidx11_shminfo[i].shmid = shmget(IPC_PRIVATE, vidx11_ximage[i]->bytes_per_line * vidx11_ximage[i]->height, IPC_CREAT|0777);
 510                         if(vidx11_shminfo[i].shmid < 0)
 511                         {
 512                                 Con_Printf("Failed to get a shm segment\n");
 513                                 VID_Shutdown();
 514                                 return false;
 515                         }
 516                         vidx11_shminfo[i].shmaddr = vidx11_ximage[i]->data = shmat(vidx11_shminfo[i].shmid, NULL, 0);
 517                         if(!vidx11_shminfo[i].shmaddr)
 518                         {
 519                                 Con_Printf("Failed to get a shm segment addresst\n");
 520                                 VID_Shutdown();
 521                                 return false;
 522                         }
 523                         vidx11_shminfo[i].readOnly = True;
 524                         XShmAttach(vidx11_display, &vidx11_shminfo[i]);
 525                 }
 526         }
 527         else
 528         {
 529                 for(i = 0; i < 1; ++i) // we only need one buffer if we don't use Xshm
 530                 {
 531                         char *p = calloc(4, w * h);
 532                         vidx11_shminfo[i].shmid = -1;
 533                         vidx11_ximage[i] = XCreateImage(vidx11_display, vidx11_visual, DefaultDepth(vidx11_display, vidx11_screen), ZPixmap, 0, (char*)p, w, h, 8, 0);
 534                         if(!vidx11_ximage[i])
 535                         {
 536                                 Con_Printf("Failed to get an XImage segment\n");
 537                                 VID_Shutdown();
 538                                 return false;
 539                         }
 540                         if(vidx11_ximage[i]->bytes_per_line != w * 4)
 541                         {
 542                                 Con_Printf("Sorry, we only support linear pixel layout\n");
 543                                 VID_Shutdown();
 544                                 return false;
 545                         }
 546                 }
 547         }
 548         return true;
 549 }
 550 static void DestroyXImages(void)
 551 {
 552         int i;
 553         for(i = 0; i < 2; ++i)
 554         {
 555                 if(vidx11_shminfo[i].shmid >= 0)
 556                 {
 557                         XShmDetach(vidx11_display, &vidx11_shminfo[i]);
 558                         XDestroyImage(vidx11_ximage[i]);
 559                         vidx11_ximage[i] = NULL;
 560                         shmdt(vidx11_shminfo[i].shmaddr);
 561                         shmctl(vidx11_shminfo[i].shmid, IPC_RMID, 0);
 562                         vidx11_shminfo[i].shmid = -1;
 563                 }
 564                 if(vidx11_ximage[i])
 565                         XDestroyImage(vidx11_ximage[i]);
 566                 vidx11_ximage[i] = 0;
 567         }
 568 }
 569
 570 static int in_mouse_x_save = 0, in_mouse_y_save = 0;
 571 static void HandleEvents(void)
 572 {
 573         XEvent event;
 574         int key;
 575         Uchar unicode;
 576         qboolean dowarp = false;
 577
 578         if (!vidx11_display)
 579                 return;
 580
 581         in_mouse_x += in_mouse_x_save;
 582         in_mouse_y += in_mouse_y_save;
 583         in_mouse_x_save = 0;
 584         in_mouse_y_save = 0;
 585
 586         while (XPending(vidx11_display))
 587         {
 588                 XNextEvent(vidx11_display, &event);
 589
 590                 switch (event.type)
 591                 {
 592                 case KeyPress:
 593                         // key pressed
 594                         key = XLateKey (&event.xkey, &unicode);
 595                         Key_Event(key, unicode, true);
 596                         break;
 597
 598                 case KeyRelease:
 599                         // key released
 600                         key = XLateKey (&event.xkey, &unicode);
 601                         Key_Event(key, unicode, false);
 602                         break;
 603
 604                 case MotionNotify:
 605                         // mouse moved
 606                         if (vid_usingmouse)
 607                         {
 608 #ifdef USEDGA
 609                                 if (vid_usingdgamouse)
 610                                 {
 611                                         in_mouse_x += event.xmotion.x_root;
 612                                         in_mouse_y += event.xmotion.y_root;
 613                                 }
 614                                 else
 615 #endif
 616                                 {
 617                                         if (!event.xmotion.send_event)
 618                                         {
 619                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 620                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 621                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 622                                                 if (vid_stick_mouse.integer || abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 623                                                         dowarp = true;
 624                                         }
 625                                 }
 626                         }
 627                         in_windowmouse_x = event.xmotion.x;
 628                         in_windowmouse_y = event.xmotion.y;
 629                         break;
 630
 631                 case ButtonPress:
 632                         // mouse button pressed
 633                         if (event.xbutton.button <= 18)
 634                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 635                         else
 636                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 637                         break;
 638
 639                 case ButtonRelease:
 640                         // mouse button released
 641                         if (event.xbutton.button <= 18)
 642                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 643                         else
 644                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 645                         break;
 646
 647                 case CreateNotify:
 648                         // window created
 649                         win_x = event.xcreatewindow.x;
 650                         win_y = event.xcreatewindow.y;
 651                         break;
 652
 653                 case ConfigureNotify:
 654                         // window changed size/location
 655                         win_x = event.xconfigure.x;
 656                         win_y = event.xconfigure.y;
 657                         if((vid_resizable.integer < 2 || vid_isnetwmfullscreen) && (vid.width != event.xconfigure.width || vid.height != event.xconfigure.height))
 658                         {
 659                                 vid.width = event.xconfigure.width;
 660                                 vid.height = event.xconfigure.height;
 661                                 if(vid_isnetwmfullscreen)
 662                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 663                                 else
 664                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 665
 666                                 DPSOFTRAST_Flush();
 667
 668                                 if(vid.softdepthpixels)
 669                                         free(vid.softdepthpixels);
 670
 671                                 DestroyXImages();
 672                                 XSync(vidx11_display, False);
 673                                 if(!BuildXImages(vid.width, vid.height))
 674                                         return;
 675                                 XSync(vidx11_display, False);
 676
 677                                 vid.softpixels = (unsigned int *) vidx11_ximage[vidx11_ximage_pos]->data;
 678                                 vid.softdepthpixels = (unsigned int *)calloc(4, vid.width * vid.height);
 679                         }
 680                         break;
 681                 case DestroyNotify:
 682                         // window has been destroyed
 683                         Sys_Quit(0);
 684                         break;
 685                 case ClientMessage:
 686                         // window manager messages
 687                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 688                                 Sys_Quit(0);
 689                         break;
 690                 case MapNotify:
 691                         if (vid_isoverrideredirect)
 692                                 break;
 693                         // window restored
 694                         vid_hidden = false;
 695                         VID_RestoreSystemGamma();
 696
 697                         if(vid_isvidmodefullscreen)
 698                         {
 699                                 // set our video mode
 700                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 701
 702                                 // Move the viewport to top left
 703                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 704                         }
 705
 706                         if(vid_isnetwmfullscreen)
 707                         {
 708                                 // make sure it's fullscreen
 709                                 XEvent event;
 710                                 event.type = ClientMessage;
 711                                 event.xclient.serial = 0;
 712                                 event.xclient.send_event = True;
 713                                 event.xclient.message_type = net_wm_state_atom;
 714                                 event.xclient.window = win;
 715                                 event.xclient.format = 32;
 716                                 event.xclient.data.l[0] = 1;
 717                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 718                                 event.xclient.data.l[2] = 0;
 719                                 event.xclient.data.l[3] = 1;
 720                                 event.xclient.data.l[4] = 0;
 721                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 722                         }
 723
 724                         dowarp = true;
 725
 726                         break;
 727                 case UnmapNotify:
 728                         if (vid_isoverrideredirect)
 729                                 break;
 730                         // window iconified/rolledup/whatever
 731                         vid_hidden = true;
 732                         VID_RestoreSystemGamma();
 733
 734                         if(vid_isvidmodefullscreen)
 735                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 736
 737                         break;
 738                 case FocusIn:
 739                         if (vid_isoverrideredirect)
 740                                 break;
 741                         // window is now the input focus
 742                         vid_activewindow = true;
 743                         break;
 744                 case FocusOut:
 745                         if (vid_isoverrideredirect)
 746                                 break;
 747
 748                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 749                         {
 750                                 // iconify netwm fullscreen window when it loses focus
 751                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 752                                 XEvent event;
 753                                 event.type = ClientMessage;
 754                                 event.xclient.serial = 0;
 755                                 event.xclient.send_event = True;
 756                                 event.xclient.message_type = net_wm_state_atom;
 757                                 event.xclient.window = win;
 758                                 event.xclient.format = 32;
 759                                 event.xclient.data.l[0] = 1;
 760                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 761                                 event.xclient.data.l[2] = 0;
 762                                 event.xclient.data.l[3] = 1;
 763                                 event.xclient.data.l[4] = 0;
 764                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 765                         }
 766
 767                         // window is no longer the input focus
 768                         vid_activewindow = false;
 769                         VID_RestoreSystemGamma();
 770
 771                         break;
 772                 case EnterNotify:
 773                         // mouse entered window
 774                         break;
 775                 case LeaveNotify:
 776                         // mouse left window
 777                         break;
 778                 default:
 779                         if(vidx11_shmevent >= 0 && event.type == vidx11_shmevent)
 780                                 --vidx11_shmwait;
 781                         break;
 782                 }
 783         }
 784
 785         if (dowarp)
 786         {
 787                 /* move the mouse to the window center again */
 788                 // we'll catch the warp motion by its send_event flag, updating the
 789                 // stored mouse position without adding any delta motion
 790                 XEvent event;
 791                 event.type = MotionNotify;
 792                 event.xmotion.display = vidx11_display;
 793                 event.xmotion.window = win;
 794                 event.xmotion.x = vid.width / 2;
 795                 event.xmotion.y = vid.height / 2;
 796                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 797                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 798         }
 799 }
 800
 801 static void *prjobj = NULL;
 802
 803 static void GL_CloseLibrary(void)
 804 {
 805         if (prjobj)
 806                 dlclose(prjobj);
 807         prjobj = NULL;
 808         gl_driver[0] = 0;
 809         qglXGetProcAddressARB = NULL;
 810         gl_extensions = "";
 811         gl_platform = "";
 812         gl_platformextensions = "";
 813 }
 814
 815 static int GL_OpenLibrary(const char *name)
 816 {
 817         Con_Printf("Loading OpenGL driver %s\n", name);
 818         GL_CloseLibrary();
 819         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 820         {
 821                 Con_Printf("Unable to open symbol list for %s\n", name);
 822                 return false;
 823         }
 824         strlcpy(gl_driver, name, sizeof(gl_driver));
 825         return true;
 826 }
 827
 828 void *GL_GetProcAddress(const char *name)
 829 {
 830         void *p = NULL;
 831         if (qglXGetProcAddressARB != NULL)
 832                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 833         if (p == NULL)
 834                 p = (void *) dlsym(prjobj, name);
 835         return p;
 836 }
 837
 838 void VID_Shutdown(void)
 839 {
 840         if (!vidx11_display)
 841                 return;
 842
 843         VID_EnableJoystick(false);
 844         VID_SetMouse(false, false, false);
 845         VID_RestoreSystemGamma();
 846
 847         // FIXME: glXDestroyContext here?
 848         if (vid_isvidmodefullscreen)
 849                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 850
 851         if(vidx11_gc)
 852                 XFreeGC(vidx11_display, vidx11_gc);
 853         vidx11_gc = NULL;
 854
 855         DestroyXImages();
 856         vidx11_shmevent = -1;
 857         vid.softpixels = NULL;
 858
 859         if (vid.softdepthpixels)
 860                 free(vid.softdepthpixels);
 861         vid.softdepthpixels = NULL;
 862
 863         if (win)
 864                 XDestroyWindow(vidx11_display, win);
 865         XCloseDisplay(vidx11_display);
 866
 867         vid_hidden = true;
 868         vid_isfullscreen = false;
 869         vid_isnetwmfullscreen = false;
 870         vid_isvidmodefullscreen = false;
 871         vid_isoverrideredirect = false;
 872         vidx11_display = NULL;
 873         win = 0;
 874         ctx = NULL;
 875
 876         GL_CloseLibrary();
 877         Key_ClearStates ();
 878 }
 879
 880 static void signal_handler(int sig)
 881 {
 882         Con_Printf("Received signal %d, exiting...\n", sig);
 883         VID_RestoreSystemGamma();
 884         Sys_Quit(1);
 885 }
 886
 887 static void InitSig(void)
 888 {
 889         signal(SIGHUP, signal_handler);
 890         signal(SIGINT, signal_handler);
 891         signal(SIGQUIT, signal_handler);
 892         signal(SIGILL, signal_handler);
 893         signal(SIGTRAP, signal_handler);
 894         signal(SIGIOT, signal_handler);
 895         signal(SIGBUS, signal_handler);
 896         signal(SIGFPE, signal_handler);
 897         signal(SIGSEGV, signal_handler);
 898         signal(SIGTERM, signal_handler);
 899 }
 900
 901 void VID_Finish (void)
 902 {
 903         vid_usevsync = vid_vsync.integer && !cls.timedemo && qglXSwapIntervalSGI;
 904         switch(vid.renderpath)
 905         {
 906                 case RENDERPATH_SOFT:
 907                         if(vidx11_shmevent >= 0) {
 908                                 vidx11_ximage_pos = !vidx11_ximage_pos;
 909                                 vid.softpixels = (unsigned int *) vidx11_ximage[vidx11_ximage_pos]->data;
 910                                 DPSOFTRAST_SetRenderTargets(vid.width, vid.height, vid.softdepthpixels, vid.softpixels, NULL, NULL, NULL);
 911
 912                                 // save mouse motion so we can deal with it later
 913                                 in_mouse_x = 0;
 914                                 in_mouse_y = 0;
 915                                 while(vidx11_shmwait)
 916                                         HandleEvents();
 917                                 in_mouse_x_save += in_mouse_x;
 918                                 in_mouse_y_save += in_mouse_y;
 919                                 in_mouse_x = 0;
 920                                 in_mouse_y = 0;
 921
 922                                 ++vidx11_shmwait;
 923                                 XShmPutImage(vidx11_display, win, vidx11_gc, vidx11_ximage[!vidx11_ximage_pos], 0, 0, 0, 0, vid.width, vid.height, True);
 924                         } else {
 925                                 // no buffer switching here, we just flush the renderer
 926                                 DPSOFTRAST_Finish();
 927                                 XPutImage(vidx11_display, win, vidx11_gc, vidx11_ximage[vidx11_ximage_pos], 0, 0, 0, 0, vid.width, vid.height);
 928                         }
 929                         break;
 930
 931                 case RENDERPATH_GL11:
 932                 case RENDERPATH_GL13:
 933                 case RENDERPATH_GL20:
 934                 case RENDERPATH_GLES1:
 935                 case RENDERPATH_GLES2:
 936                         if (vid_usingvsync != vid_usevsync)
 937                         {
 938                                 vid_usingvsync = vid_usevsync;
 939                                 if (qglXSwapIntervalSGI (vid_usevsync))
 940                                         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");
 941                         }
 942
 943                         if (!vid_hidden)
 944                         {
 945                                 CHECKGLERROR
 946                                 if (r_speeds.integer == 2 || gl_finish.integer)
 947                                         GL_Finish();
 948                                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 949                         }
 950                         break;
 951
 952                 case RENDERPATH_D3D9:
 953                 case RENDERPATH_D3D10:
 954                 case RENDERPATH_D3D11:
 955                         break;
 956         }
 957
 958         if (vid_x11_hardwaregammasupported)
 959                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 960 }
 961
 962 int VID_SetGamma(unsigned short *ramps, int rampsize)
 963 {
 964         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 965 }
 966
 967 int VID_GetGamma(unsigned short *ramps, int rampsize)
 968 {
 969         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 970 }
 971
 972 void VID_Init(void)
 973 {
 974 #ifdef USEDGA
 975         Cvar_RegisterVariable (&vid_dgamouse);
 976 #endif
 977         Cvar_RegisterVariable (&vid_netwmfullscreen);
 978         InitSig(); // trap evil signals
 979 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 980         if (COM_CheckParm ("-nomouse"))
 981                 mouse_avail = false;
 982         vidx11_shminfo[0].shmid = -1;
 983         vidx11_shminfo[1].shmid = -1;
 984 }
 985
 986 static void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 987 {
 988         *attrib++ = GLX_RGBA;
 989         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 990         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 991         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 992         *attrib++ = GLX_DOUBLEBUFFER;
 993         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 994         // if stencil is enabled, ask for alpha too
 995         if (stencil)
 996         {
 997                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 998                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 999         }
1000         if (stereobuffer)
1001                 *attrib++ = GLX_STEREO;
1002         if (samples > 1)
1003         {
1004                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
1005                 *attrib++ = 1;
1006                 *attrib++ = GLX_SAMPLES_ARB;
1007                 *attrib++ = samples;
1008         }
1009         *attrib++ = None;
1010 }
1011
1012 static qboolean VID_InitModeSoft(viddef_mode_t *mode)
1013 {
1014         int i, j;
1015         XSetWindowAttributes attr;
1016         XClassHint *clshints;
1017         XWMHints *wmhints;
1018         XSizeHints *szhints;
1019         unsigned long mask;
1020         int MajorVersion, MinorVersion;
1021         char *xpm;
1022         char **idata;
1023         unsigned char *data;
1024         XGCValues gcval;
1025         const char *dpyname;
1026         char vabuf[1024];
1027
1028         vid_isfullscreen = false;
1029         vid_isnetwmfullscreen = false;
1030         vid_isvidmodefullscreen = false;
1031         vid_isoverrideredirect = false;
1032
1033         if (!(vidx11_display = XOpenDisplay(NULL)))
1034         {
1035                 Con_Print("Couldn't open the X display\n");
1036                 return false;
1037         }
1038         dpyname = XDisplayName(NULL);
1039
1040         // LordHavoc: making the close button on a window do the right thing
1041         // seems to involve this mess, sigh...
1042         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
1043         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
1044         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
1045         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
1046         net_wm_icon = XInternAtom(vidx11_display, "_NET_WM_ICON", false);
1047         cardinal = XInternAtom(vidx11_display, "CARDINAL", false);
1048
1049         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
1050         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
1051
1052         vidx11_screen = DefaultScreen(vidx11_display);
1053         root = RootWindow(vidx11_display, vidx11_screen);
1054
1055         // Get video mode list
1056         MajorVersion = MinorVersion = 0;
1057         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
1058                 vidmode_ext = false;
1059         else
1060         {
1061                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
1062                 vidmode_ext = true;
1063         }
1064
1065         if (mode->fullscreen)
1066         {
1067                 if(vid_netwmfullscreen.integer)
1068                 {
1069                         // TODO detect WM support
1070                         vid_isnetwmfullscreen = true;
1071                         vid_isfullscreen = true;
1072                         // width and height will be filled in later
1073                         Con_DPrintf("Using NetWM fullscreen mode\n");
1074                 }
1075
1076                 if(!vid_isfullscreen && vidmode_ext)
1077                 {
1078                         int best_fit, best_dist, dist, x, y;
1079
1080                         // Are we going fullscreen?  If so, let's change video mode
1081                         XF86VidModeModeLine *current_vidmode;
1082                         XF86VidModeModeInfo **vidmodes;
1083                         int num_vidmodes;
1084
1085                         // This nice hack comes from the SDL source code
1086                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
1087                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
1088
1089                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1090                         best_dist = 0;
1091                         best_fit = -1;
1092
1093                         for (i = 0; i < num_vidmodes; i++)
1094                         {
1095                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
1096                                         continue;
1097
1098                                 x = mode->width - vidmodes[i]->hdisplay;
1099                                 y = mode->height - vidmodes[i]->vdisplay;
1100                                 dist = (x * x) + (y * y);
1101                                 if (best_fit == -1 || dist < best_dist)
1102                                 {
1103                                         best_dist = dist;
1104                                         best_fit = i;
1105                                 }
1106                         }
1107
1108                         if (best_fit != -1)
1109                         {
1110                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
1111                                 // to width/height =, so the window will take the full area of
1112                                 // the mode chosen
1113                                 mode->width = vidmodes[best_fit]->hdisplay;
1114                                 mode->height = vidmodes[best_fit]->vdisplay;
1115
1116                                 // change to the mode
1117                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
1118                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
1119                                 vid_isvidmodefullscreen = true;
1120                                 vid_isfullscreen = true;
1121
1122                                 // Move the viewport to top left
1123                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1124                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
1125                         }
1126
1127                         free(vidmodes);
1128                 }
1129
1130                 if(!vid_isfullscreen)
1131                 {
1132                         // sorry, no FS available
1133                         // use the full desktop resolution
1134                         vid_isfullscreen = true;
1135                         // width and height will be filled in later
1136                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
1137                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
1138                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
1139                 }
1140         }
1141
1142         // LordHavoc: save the visual for use in gamma ramp settings later
1143         vidx11_visual = DefaultVisual(vidx11_display, vidx11_screen);
1144
1145         /* window attributes */
1146         attr.background_pixel = 0;
1147         attr.border_pixel = 0;
1148         // LordHavoc: save the colormap for later, too
1149         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, vidx11_visual, AllocNone);
1150         attr.event_mask = X_MASK;
1151
1152         if (mode->fullscreen)
1153         {
1154                 if(vid_isnetwmfullscreen)
1155                 {
1156                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
1157                         attr.backing_store = NotUseful;
1158                         attr.save_under = False;
1159                 }
1160                 else
1161                 {
1162                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
1163                         attr.override_redirect = True;
1164                         attr.backing_store = NotUseful;
1165                         attr.save_under = False;
1166                         vid_isoverrideredirect = true; // so it knows to grab
1167                 }
1168         }
1169         else
1170         {
1171                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1172         }
1173
1174         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, CopyFromParent, InputOutput, vidx11_visual, mask, &attr);
1175
1176         data = loadimagepixelsbgra("darkplaces-icon", false, false, false, NULL);
1177         if(data)
1178         {
1179                 // use _NET_WM_ICON too
1180                 static long netwm_icon[MAX_NETWM_ICON];
1181                 int pos = 0;
1182                 int i = 1;
1183
1184                 while(data)
1185                 {
1186                         if(pos + 2 * image_width * image_height < MAX_NETWM_ICON)
1187                         {
1188                                 netwm_icon[pos++] = image_width;
1189                                 netwm_icon[pos++] = image_height;
1190                                 for(i = 0; i < image_height; ++i)
1191                                         for(j = 0; j < image_width; ++j)
1192                                                 netwm_icon[pos++] = BuffLittleLong(&data[(i*image_width+j)*4]);
1193                         }
1194                         else
1195                         {
1196                                 Con_Printf("Skipping NETWM icon #%d because there is no space left\n", i);
1197                         }
1198                         ++i;
1199                         Mem_Free(data);
1200                         data = loadimagepixelsbgra(va(vabuf, sizeof(vabuf), "darkplaces-icon%d", i), false, false, false, NULL);
1201                 }
1202                 XChangeProperty(vidx11_display, win, net_wm_icon, cardinal, 32, PropModeReplace, (const unsigned char *) netwm_icon, pos);
1203         }
1204
1205         // fallthrough for old window managers
1206         xpm = (char *) FS_LoadFile("darkplaces-icon.xpm", tempmempool, false, NULL);
1207         idata = NULL;
1208         if(xpm)
1209                 idata = XPM_DecodeString(xpm);
1210         if(!idata)
1211                 idata = ENGINE_ICON;
1212
1213         wmhints = XAllocWMHints();
1214         if(XpmCreatePixmapFromData(vidx11_display, win,
1215                 idata,
1216                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1217                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1218
1219         if(xpm)
1220                 Mem_Free(xpm);
1221
1222         clshints = XAllocClassHint();
1223         clshints->res_name = strdup(gamename);
1224         clshints->res_class = strdup("DarkPlaces");
1225
1226         szhints = XAllocSizeHints();
1227         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1228         {
1229                 szhints->min_width = szhints->max_width = mode->width;
1230                 szhints->min_height = szhints->max_height = mode->height;
1231                 szhints->flags |= PMinSize | PMaxSize;
1232         }
1233
1234         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1235         // strdup() allocates using malloc(), should be freed with free()
1236         free(clshints->res_name);
1237         free(clshints->res_class);
1238         XFree(clshints);
1239         XFree(wmhints);
1240         XFree(szhints);
1241
1242         //XStoreName(vidx11_display, win, gamename);
1243         XMapWindow(vidx11_display, win);
1244
1245         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1246
1247         if (vid_isoverrideredirect)
1248         {
1249                 XMoveWindow(vidx11_display, win, 0, 0);
1250                 XRaiseWindow(vidx11_display, win);
1251                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1252                 XFlush(vidx11_display);
1253         }
1254
1255         if(vid_isvidmodefullscreen)
1256         {
1257                 // Move the viewport to top left
1258                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1259         }
1260
1261         //XSync(vidx11_display, False);
1262
1263         // COMMANDLINEOPTION: Unix GLX: -noshm disables XShm extensioon
1264         if(dpyname && dpyname[0] == ':' && dpyname[1] && (dpyname[2] < '0' || dpyname[2] > '9') && !COM_CheckParm("-noshm") && XShmQueryExtension(vidx11_display))
1265         {
1266                 Con_Printf("Using XShm\n");
1267                 vidx11_shmevent = XShmGetEventBase(vidx11_display) + ShmCompletion;
1268         }
1269         else
1270         {
1271                 Con_Printf("Not using XShm\n");
1272                 vidx11_shmevent = -1;
1273         }
1274         BuildXImages(mode->width, mode->height);
1275
1276         vidx11_ximage_pos = 0;
1277         vid.softpixels = (unsigned int *) vidx11_ximage[vidx11_ximage_pos]->data;
1278         vidx11_shmwait = 0;
1279         vid.softdepthpixels = (unsigned int *)calloc(1, mode->width * mode->height * 4);
1280
1281         memset(&gcval, 0, sizeof(gcval));
1282         vidx11_gc = XCreateGC(vidx11_display, win, 0, &gcval);
1283
1284         if (DPSOFTRAST_Init(mode->width, mode->height, vid_soft_threads.integer, vid_soft_interlace.integer, (unsigned int *)vid.softpixels, (unsigned int *)vid.softdepthpixels) < 0)
1285         {
1286                 Con_Printf("Failed to initialize software rasterizer\n");
1287                 VID_Shutdown();
1288                 return false;
1289         }
1290
1291         XSync(vidx11_display, False);
1292
1293         vid_usingmousegrab = false;
1294         vid_usingmouse = false;
1295         vid_usinghidecursor = false;
1296         vid_usingvsync = false;
1297         vid_hidden = false;
1298         vid_activewindow = true;
1299         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1300 #ifdef USEDGA
1301         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1302         if (!vid_x11_dgasupported)
1303                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1304 #endif
1305
1306         VID_Soft_SharedSetup();
1307
1308         return true;
1309 }
1310
1311 static qboolean VID_InitModeGL(viddef_mode_t *mode)
1312 {
1313         int i, j;
1314         int attrib[32];
1315         XSetWindowAttributes attr;
1316         XClassHint *clshints;
1317         XWMHints *wmhints;
1318         XSizeHints *szhints;
1319         unsigned long mask;
1320         XVisualInfo *visinfo;
1321         int MajorVersion, MinorVersion;
1322         const char *drivername;
1323         char *xpm;
1324         char **idata;
1325         unsigned char *data;
1326         char vabuf[1024];
1327
1328         vid_isfullscreen = false;
1329         vid_isnetwmfullscreen = false;
1330         vid_isvidmodefullscreen = false;
1331         vid_isoverrideredirect = false;
1332
1333 #if defined(__APPLE__) && defined(__MACH__)
1334         drivername = "/usr/X11R6/lib/libGL.1.dylib";
1335 #else
1336         drivername = "libGL.so.1";
1337 #endif
1338 // 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
1339 // 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
1340 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
1341         i = COM_CheckParm("-gl_driver");
1342         if (i && i < com_argc - 1)
1343                 drivername = com_argv[i + 1];
1344         if (!GL_OpenLibrary(drivername))
1345         {
1346                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
1347                 return false;
1348         }
1349
1350         if (!(vidx11_display = XOpenDisplay(NULL)))
1351         {
1352                 Con_Print("Couldn't open the X display\n");
1353                 return false;
1354         }
1355
1356         // LordHavoc: making the close button on a window do the right thing
1357         // seems to involve this mess, sigh...
1358         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
1359         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
1360         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
1361         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
1362         net_wm_icon = XInternAtom(vidx11_display, "_NET_WM_ICON", false);
1363         cardinal = XInternAtom(vidx11_display, "CARDINAL", false);
1364
1365         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
1366         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
1367
1368         vidx11_screen = DefaultScreen(vidx11_display);
1369         root = RootWindow(vidx11_display, vidx11_screen);
1370
1371         // Get video mode list
1372         MajorVersion = MinorVersion = 0;
1373         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
1374                 vidmode_ext = false;
1375         else
1376         {
1377                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
1378                 vidmode_ext = true;
1379         }
1380
1381         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
1382          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
1383          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
1384          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
1385          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
1386          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
1387         {
1388                 Con_Printf("glX functions not found in %s\n", gl_driver);
1389                 return false;
1390         }
1391
1392         VID_BuildGLXAttrib(attrib, mode->bitsperpixel == 32, mode->stereobuffer, mode->samples);
1393         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
1394         if (!visinfo)
1395         {
1396                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
1397                 return false;
1398         }
1399
1400         if (mode->fullscreen)
1401         {
1402                 if(vid_netwmfullscreen.integer)
1403                 {
1404                         // TODO detect WM support
1405                         vid_isnetwmfullscreen = true;
1406                         vid_isfullscreen = true;
1407                         // width and height will be filled in later
1408                         Con_DPrintf("Using NetWM fullscreen mode\n");
1409                 }
1410
1411                 if(!vid_isfullscreen && vidmode_ext)
1412                 {
1413                         int best_fit, best_dist, dist, x, y;
1414
1415                         // Are we going fullscreen?  If so, let's change video mode
1416                         XF86VidModeModeLine *current_vidmode;
1417                         XF86VidModeModeInfo **vidmodes;
1418                         int num_vidmodes;
1419
1420                         // This nice hack comes from the SDL source code
1421                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
1422                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
1423
1424                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1425                         best_dist = 0;
1426                         best_fit = -1;
1427
1428                         for (i = 0; i < num_vidmodes; i++)
1429                         {
1430                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
1431                                         continue;
1432
1433                                 x = mode->width - vidmodes[i]->hdisplay;
1434                                 y = mode->height - vidmodes[i]->vdisplay;
1435                                 dist = (x * x) + (y * y);
1436                                 if (best_fit == -1 || dist < best_dist)
1437                                 {
1438                                         best_dist = dist;
1439                                         best_fit = i;
1440                                 }
1441                         }
1442
1443                         if (best_fit != -1)
1444                         {
1445                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
1446                                 // to width/height =, so the window will take the full area of
1447                                 // the mode chosen
1448                                 mode->width = vidmodes[best_fit]->hdisplay;
1449                                 mode->height = vidmodes[best_fit]->vdisplay;
1450
1451                                 // change to the mode
1452                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
1453                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
1454                                 vid_isvidmodefullscreen = true;
1455                                 vid_isfullscreen = true;
1456
1457                                 // Move the viewport to top left
1458                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1459                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
1460                         }
1461
1462                         free(vidmodes);
1463                 }
1464
1465                 if(!vid_isfullscreen)
1466                 {
1467                         // sorry, no FS available
1468                         // use the full desktop resolution
1469                         vid_isfullscreen = true;
1470                         // width and height will be filled in later
1471                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
1472                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
1473                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
1474                 }
1475         }
1476
1477         // LordHavoc: save the visual for use in gamma ramp settings later
1478         vidx11_visual = visinfo->visual;
1479
1480         /* window attributes */
1481         attr.background_pixel = 0;
1482         attr.border_pixel = 0;
1483         // LordHavoc: save the colormap for later, too
1484         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
1485         attr.event_mask = X_MASK;
1486
1487         if (mode->fullscreen)
1488         {
1489                 if(vid_isnetwmfullscreen)
1490                 {
1491                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
1492                         attr.backing_store = NotUseful;
1493                         attr.save_under = False;
1494                 }
1495                 else
1496                 {
1497                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
1498                         attr.override_redirect = True;
1499                         attr.backing_store = NotUseful;
1500                         attr.save_under = False;
1501                         vid_isoverrideredirect = true; // so it knows to grab
1502                 }
1503         }
1504         else
1505         {
1506                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1507         }
1508
1509         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
1510
1511         data = loadimagepixelsbgra("darkplaces-icon", false, false, false, NULL);
1512         if(data)
1513         {
1514                 // use _NET_WM_ICON too
1515                 static long netwm_icon[MAX_NETWM_ICON];
1516                 int pos = 0;
1517                 int i = 1;
1518
1519                 while(data)
1520                 {
1521                         if(pos + 2 * image_width * image_height < MAX_NETWM_ICON)
1522                         {
1523                                 netwm_icon[pos++] = image_width;
1524                                 netwm_icon[pos++] = image_height;
1525                                 for(i = 0; i < image_height; ++i)
1526                                         for(j = 0; j < image_width; ++j)
1527                                                 netwm_icon[pos++] = BuffLittleLong(&data[(i*image_width+j)*4]);
1528                         }
1529                         else
1530                         {
1531                                 Con_Printf("Skipping NETWM icon #%d because there is no space left\n", i);
1532                         }
1533                         ++i;
1534                         Mem_Free(data);
1535                         data = loadimagepixelsbgra(va(vabuf, sizeof(vabuf), "darkplaces-icon%d", i), false, false, false, NULL);
1536                 }
1537                 XChangeProperty(vidx11_display, win, net_wm_icon, cardinal, 32, PropModeReplace, (const unsigned char *) netwm_icon, pos);
1538         }
1539
1540         // fallthrough for old window managers
1541         xpm = (char *) FS_LoadFile("darkplaces-icon.xpm", tempmempool, false, NULL);
1542         idata = NULL;
1543         if(xpm)
1544                 idata = XPM_DecodeString(xpm);
1545         if(!idata)
1546                 idata = ENGINE_ICON;
1547
1548         wmhints = XAllocWMHints();
1549         if(XpmCreatePixmapFromData(vidx11_display, win,
1550                 idata,
1551                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1552                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1553
1554         if(xpm)
1555                 Mem_Free(xpm);
1556
1557         clshints = XAllocClassHint();
1558         clshints->res_name = strdup(gamename);
1559         clshints->res_class = strdup("DarkPlaces");
1560
1561         szhints = XAllocSizeHints();
1562         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1563         {
1564                 szhints->min_width = szhints->max_width = mode->width;
1565                 szhints->min_height = szhints->max_height = mode->height;
1566                 szhints->flags |= PMinSize | PMaxSize;
1567         }
1568
1569         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1570         // strdup() allocates using malloc(), should be freed with free()
1571         free(clshints->res_name);
1572         free(clshints->res_class);
1573         XFree(clshints);
1574         XFree(wmhints);
1575         XFree(szhints);
1576
1577         //XStoreName(vidx11_display, win, gamename);
1578         XMapWindow(vidx11_display, win);
1579
1580         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1581
1582         if (vid_isoverrideredirect)
1583         {
1584                 XMoveWindow(vidx11_display, win, 0, 0);
1585                 XRaiseWindow(vidx11_display, win);
1586                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1587                 XFlush(vidx11_display);
1588         }
1589
1590         if(vid_isvidmodefullscreen)
1591         {
1592                 // Move the viewport to top left
1593                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1594         }
1595
1596         //XSync(vidx11_display, False);
1597
1598         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1599         XFree(visinfo); // glXChooseVisual man page says to use XFree to free visinfo
1600         if (!ctx)
1601         {
1602                 Con_Printf ("glXCreateContext failed\n");
1603                 return false;
1604         }
1605
1606         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1607         {
1608                 Con_Printf ("glXMakeCurrent failed\n");
1609                 return false;
1610         }
1611
1612         XSync(vidx11_display, False);
1613
1614         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1615         {
1616                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1617                 return false;
1618         }
1619
1620         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1621         gl_platform = "GLX";
1622         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1623
1624 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1625 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1626 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1627         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1628 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1629 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1630 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1631         GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1632
1633         vid_usingmousegrab = false;
1634         vid_usingmouse = false;
1635         vid_usinghidecursor = false;
1636         vid_usingvsync = false;
1637         vid_hidden = false;
1638         vid_activewindow = true;
1639         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1640 #ifdef USEDGA
1641         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1642         if (!vid_x11_dgasupported)
1643                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1644 #endif
1645
1646         GL_Init();
1647         return true;
1648 }
1649
1650 qboolean VID_InitMode(viddef_mode_t *mode)
1651 {
1652 #ifdef SSE_POSSIBLE
1653         if (vid_soft.integer)
1654                 return VID_InitModeSoft(mode);
1655         else
1656 #endif
1657                 return VID_InitModeGL(mode);
1658 }
1659
1660 void Sys_SendKeyEvents(void)
1661 {
1662         static qboolean sound_active = true;
1663
1664         // enable/disable sound on focus gain/loss
1665         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1666         {
1667                 if (!sound_active)
1668                 {
1669                         S_UnblockSound ();
1670                         sound_active = true;
1671                 }
1672         }
1673         else
1674         {
1675                 if (sound_active)
1676                 {
1677                         S_BlockSound ();
1678                         sound_active = false;
1679                 }
1680         }
1681
1682         HandleEvents();
1683 }
1684
1685 void VID_BuildJoyState(vid_joystate_t *joystate)
1686 {
1687         VID_Shared_BuildJoyState_Begin(joystate);
1688         VID_Shared_BuildJoyState_Finish(joystate);
1689 }
1690
1691 void VID_EnableJoystick(qboolean enable)
1692 {
1693         int index = joy_enable.integer > 0 ? joy_index.integer : -1;
1694         qboolean success = false;
1695         int sharedcount = 0;
1696         sharedcount = VID_Shared_SetJoystick(index);
1697         if (index >= 0 && index < sharedcount)
1698                 success = true;
1699
1700         // update cvar containing count of XInput joysticks
1701         if (joy_detected.integer != sharedcount)
1702                 Cvar_SetValueQuick(&joy_detected, sharedcount);
1703
1704         Cvar_SetValueQuick(&joy_active, success ? 1 : 0);
1705 }
1706
1707 void IN_Move (void)
1708 {
1709         vid_joystate_t joystate;
1710         VID_EnableJoystick(true);
1711         VID_BuildJoyState(&joystate);
1712         VID_ApplyJoyState(&joystate);
1713 }
1714
1715 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1716 {
1717         if(vidmode_ext)
1718         {
1719                 int i, bpp;
1720                 size_t k;
1721                 XF86VidModeModeInfo **vidmodes;
1722                 int num_vidmodes;
1723
1724                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1725                 k = 0;
1726                 for (i = 0; i < num_vidmodes; i++)
1727                 {
1728                         if(k >= maxcount)
1729                                 break;
1730                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1731                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1732                         {
1733                                 if(k >= maxcount)
1734                                         break;
1735                                 modes[k].width = vidmodes[i]->hdisplay;
1736                                 modes[k].height = vidmodes[i]->vdisplay;
1737                                 modes[k].bpp = 8;
1738                                 if(vidmodes[i]->dotclock && vidmodes[i]->htotal && vidmodes[i]->vtotal)
1739                                         modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1740                                 else
1741                                         modes[k].refreshrate = 60;
1742                                 modes[k].pixelheight_num = 1;
1743                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1744                                 ++k;
1745                         }
1746                 }
1747                 // manpage of XF86VidModeGetAllModeLines says it should be freed by the caller
1748                 XFree(vidmodes);
1749                 return k;
1750         }
1751         return 0; // FIXME implement this
1752 }