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