vid_glx.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 #include <signal.h>
  21
  22 #include <dlfcn.h>
  23
  24 #include <X11/Xlib.h>
  25 #include <X11/Xutil.h>
  26 #include <X11/Xatom.h>
  27 #include <X11/XKBlib.h> // TODO possibly ifdef this out on non-supporting systems... Solaris (as always)?
  28 #include <GL/glx.h>
  29
  30 #include "quakedef.h"
  31
  32 #include <X11/keysym.h>
  33 #include <X11/cursorfont.h>
  34 #include <X11/xpm.h>
  35
  36 #include <X11/extensions/XShm.h>
  37 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
  38 #include <X11/extensions/xf86dga.h>
  39 #endif
  40 #include <X11/extensions/xf86vmode.h>
  41
  42 // get the Uchar type
  43 #include "utf8lib.h"
  44 #include "image.h"
  45
  46 #include "nexuiz.xpm"
  47 #include "darkplaces.xpm"
  48
  49 // Tell startup code that we have a client
  50 int cl_available = true;
  51
  52 // note: if we used the XRandR extension we could support refresh rates
  53 qboolean vid_supportrefreshrate = false;
  54
  55 //GLX prototypes
  56 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  57 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  58 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  59 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  60 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  61 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  62
  63 //GLX_ARB_get_proc_address
  64 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  65
  66 static dllfunction_t getprocaddressfuncs[] =
  67 {
  68         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  69         {NULL, NULL}
  70 };
  71
  72 //GLX_SGI_swap_control
  73 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  74
  75 static dllfunction_t swapcontrolfuncs[] =
  76 {
  77         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  78         {NULL, NULL}
  79 };
  80
  81 static Display *vidx11_display = NULL;
  82 static int vidx11_screen;
  83 static Window win, root;
  84 static GLXContext ctx = NULL;
  85
  86 Atom wm_delete_window_atom;
  87 Atom net_wm_state_atom;
  88 Atom net_wm_state_hidden_atom;
  89 Atom net_wm_state_fullscreen_atom;
  90 Atom net_wm_icon;
  91 Atom cardinal;
  92
  93 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  94 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  95                     PointerMotionMask | ButtonMotionMask)
  96 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  97                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  98                 LeaveWindowMask)
  99
 100
 101 static qboolean mouse_avail = true;
 102 static qboolean vid_usingmousegrab = false;
 103 static qboolean vid_usingmouse = false;
 104 static qboolean vid_usinghidecursor = false;
 105 static qboolean vid_usingvsync = false;
 106 static qboolean vid_usevsync = false;
 107 static qboolean vid_x11_hardwaregammasupported = false;
 108 static qboolean vid_x11_dgasupported = false;
 109 static int vid_x11_gammarampsize = 0;
 110
 111 #if !defined(__APPLE__) && !defined(SUNOS)
 112 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "0", "make use of DGA mouse input"};
 113 static qboolean vid_usingdgamouse = false;
 114 #endif
 115 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"};
 116
 117 qboolean vidmode_ext = false;
 118
 119 static int win_x, win_y;
 120
 121 static XF86VidModeModeInfo init_vidmode, game_vidmode;
 122 static qboolean vid_isfullscreen = false;
 123 static qboolean vid_isvidmodefullscreen = false;
 124 static qboolean vid_isnetwmfullscreen = false;
 125 static qboolean vid_isoverrideredirect = false;
 126
 127 static Visual *vidx11_visual;
 128 static Colormap vidx11_colormap;
 129
 130 /*-----------------------------------------------------------------------*/
 131 //
 132
 133 long keysym2ucs(KeySym keysym);
 134 void DP_Xutf8LookupString(XKeyEvent * ev,
 135                          Uchar *uch,
 136                          KeySym * keysym_return,
 137                          Status * status_return)
 138 {
 139         int rc;
 140         KeySym keysym;
 141         int codepoint;
 142         char buffer[64];
 143         int nbytes = sizeof(buffer);
 144
 145         rc = XLookupString(ev, buffer, nbytes, &keysym, NULL);
 146
 147         if (rc > 0) {
 148                 codepoint = buffer[0] & 0xFF;
 149         } else {
 150                 codepoint = keysym2ucs(keysym);
 151         }
 152
 153         if (codepoint < 0) {
 154                 if (keysym == None) {
 155                         *status_return = XLookupNone;
 156                 } else {
 157                         *status_return = XLookupKeySym;
 158                         *keysym_return = keysym;
 159                 }
 160                 *uch = 0;
 161                 return;
 162         }
 163
 164         *uch = codepoint;
 165
 166         if (keysym != None) {
 167                 *keysym_return = keysym;
 168                 *status_return = XLookupBoth;
 169         } else {
 170                 *status_return = XLookupChars;
 171         }
 172 }
 173 static int XLateKey(XKeyEvent *ev, Uchar *ascii)
 174 {
 175         int key = 0;
 176         //char buf[64];
 177         KeySym keysym, shifted;
 178         Status status;
 179
 180         keysym = XLookupKeysym (ev, 0);
 181         DP_Xutf8LookupString(ev, ascii, &shifted, &status);
 182
 183         switch(keysym)
 184         {
 185                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 186                 case XK_Page_Up:         key = K_PGUP; break;
 187
 188                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 189                 case XK_Page_Down:       key = K_PGDN; break;
 190
 191                 case XK_KP_Home: key = K_KP_HOME; break;
 192                 case XK_Home:    key = K_HOME; break;
 193
 194                 case XK_KP_End:  key = K_KP_END; break;
 195                 case XK_End:     key = K_END; break;
 196
 197                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 198                 case XK_Left:    key = K_LEFTARROW; break;
 199
 200                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 201                 case XK_Right:  key = K_RIGHTARROW;             break;
 202
 203                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 204                 case XK_Down:    key = K_DOWNARROW; break;
 205
 206                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 207                 case XK_Up:              key = K_UPARROW;        break;
 208
 209                 case XK_Escape: key = K_ESCAPE;         break;
 210
 211                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 212                 case XK_Return: key = K_ENTER;           break;
 213
 214                 case XK_Tab:            key = K_TAB;                     break;
 215
 216                 case XK_F1:              key = K_F1;                            break;
 217
 218                 case XK_F2:              key = K_F2;                            break;
 219
 220                 case XK_F3:              key = K_F3;                            break;
 221
 222                 case XK_F4:              key = K_F4;                            break;
 223
 224                 case XK_F5:              key = K_F5;                            break;
 225
 226                 case XK_F6:              key = K_F6;                            break;
 227
 228                 case XK_F7:              key = K_F7;                            break;
 229
 230                 case XK_F8:              key = K_F8;                            break;
 231
 232                 case XK_F9:              key = K_F9;                            break;
 233
 234                 case XK_F10:            key = K_F10;                     break;
 235
 236                 case XK_F11:            key = K_F11;                     break;
 237
 238                 case XK_F12:            key = K_F12;                     break;
 239
 240                 case XK_BackSpace: key = K_BACKSPACE; break;
 241
 242                 case XK_KP_Delete: key = K_KP_DEL; break;
 243                 case XK_Delete: key = K_DEL; break;
 244
 245                 case XK_Pause:  key = K_PAUSE;           break;
 246
 247                 case XK_Shift_L:
 248                 case XK_Shift_R:        key = K_SHIFT;          break;
 249
 250                 case XK_Execute:
 251                 case XK_Control_L:
 252                 case XK_Control_R:      key = K_CTRL;            break;
 253
 254                 case XK_Alt_L:
 255                 case XK_Meta_L:
 256                 case XK_ISO_Level3_Shift:
 257                 case XK_Alt_R:
 258                 case XK_Meta_R: key = K_ALT;                    break;
 259
 260                 case XK_KP_Begin: key = K_KP_5; break;
 261
 262                 case XK_Insert:key = K_INS; break;
 263                 case XK_KP_Insert: key = K_KP_INS; break;
 264
 265                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 266                 case XK_KP_Add:  key = K_KP_PLUS; break;
 267                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 268                 case XK_KP_Divide: key = K_KP_SLASH; break;
 269
 270                 case XK_section:        key = '~'; break;
 271
 272                 default:
 273                         if (keysym < 32)
 274                                 break;
 275
 276                         if (keysym >= 'A' && keysym <= 'Z')
 277                                 key = keysym - 'A' + 'a';
 278                         else
 279                                 key = keysym;
 280
 281                         break;
 282         }
 283
 284         return key;
 285 }
 286
 287 static Cursor CreateNullCursor(Display *display, Window root)
 288 {
 289         Pixmap cursormask;
 290         XGCValues xgc;
 291         GC gc;
 292         XColor dummycolour;
 293         Cursor cursor;
 294
 295         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 296         xgc.function = GXclear;
 297         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 298         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 299         dummycolour.pixel = 0;
 300         dummycolour.red = 0;
 301         dummycolour.flags = 04;
 302         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 303         XFreePixmap(display,cursormask);
 304         XFreeGC(display,gc);
 305         return cursor;
 306 }
 307
 308 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 309 {
 310         static int originalmouseparms_num;
 311         static int originalmouseparms_denom;
 312         static int originalmouseparms_threshold;
 313         static qboolean restore_spi;
 314
 315 #if !defined(__APPLE__) && !defined(SUNOS)
 316         qboolean usedgamouse;
 317 #endif
 318
 319         if (!vidx11_display || !win)
 320                 return;
 321
 322         if (relative)
 323                 fullscreengrab = true;
 324
 325         if (!mouse_avail)
 326                 fullscreengrab = relative = hidecursor = false;
 327
 328 #if !defined(__APPLE__) && !defined(SUNOS)
 329         usedgamouse = relative && vid_dgamouse.integer;
 330         if (!vid_x11_dgasupported)
 331                 usedgamouse = false;
 332         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 333                 VID_SetMouse(false, false, false); // ungrab first!
 334 #endif
 335
 336         if (vid_usingmousegrab != fullscreengrab)
 337         {
 338                 vid_usingmousegrab = fullscreengrab;
 339                 cl_ignoremousemoves = 2;
 340                 if (fullscreengrab)
 341                 {
 342                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 343                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 344                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 345                 }
 346                 else
 347                 {
 348                         XUngrabPointer(vidx11_display, CurrentTime);
 349                         XUngrabKeyboard(vidx11_display, CurrentTime);
 350                 }
 351         }
 352
 353         if (relative)
 354         {
 355                 if (!vid_usingmouse)
 356                 {
 357                         XWindowAttributes attribs_1;
 358                         XSetWindowAttributes attribs_2;
 359
 360                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 361                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 362                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 363
 364 #if !defined(__APPLE__) && !defined(SUNOS)
 365                         vid_usingdgamouse = usedgamouse;
 366                         if (usedgamouse)
 367                         {
 368                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 369                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 370                         }
 371                         else
 372 #endif
 373                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 374
 375 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 376 #if !defined(__APPLE__) && !defined(SUNOS)
 377                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 378 #else
 379                         if (!COM_CheckParm ("-noforcemparms"))
 380 #endif
 381                         {
 382                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 383                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 384                                 restore_spi = true;
 385                         }
 386                         else
 387                                 restore_spi = false;
 388
 389                         cl_ignoremousemoves = 2;
 390                         vid_usingmouse = true;
 391                 }
 392         }
 393         else
 394         {
 395                 if (vid_usingmouse)
 396                 {
 397 #if !defined(__APPLE__) && !defined(SUNOS)
 398                         if (vid_usingdgamouse)
 399                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 400                         vid_usingdgamouse = false;
 401 #endif
 402                         cl_ignoremousemoves = 2;
 403
 404                         if (restore_spi)
 405                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 406                         restore_spi = false;
 407
 408                         vid_usingmouse = false;
 409                 }
 410         }
 411
 412         if (vid_usinghidecursor != hidecursor)
 413         {
 414                 vid_usinghidecursor = hidecursor;
 415                 if (hidecursor)
 416                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 417                 else
 418                         XUndefineCursor(vidx11_display, win);
 419         }
 420 }
 421
 422 static keynum_t buttonremap[18] =
 423 {
 424         K_MOUSE1,
 425         K_MOUSE3,
 426         K_MOUSE2,
 427         K_MWHEELUP,
 428         K_MWHEELDOWN,
 429         K_MOUSE4,
 430         K_MOUSE5,
 431         K_MOUSE6,
 432         K_MOUSE7,
 433         K_MOUSE8,
 434         K_MOUSE9,
 435         K_MOUSE10,
 436         K_MOUSE11,
 437         K_MOUSE12,
 438         K_MOUSE13,
 439         K_MOUSE14,
 440         K_MOUSE15,
 441         K_MOUSE16,
 442 };
 443
 444 static void HandleEvents(void)
 445 {
 446         XEvent event;
 447         int key;
 448         Uchar unicode;
 449         qboolean dowarp = false;
 450
 451         if (!vidx11_display)
 452                 return;
 453
 454         while (XPending(vidx11_display))
 455         {
 456                 XNextEvent(vidx11_display, &event);
 457
 458                 switch (event.type)
 459                 {
 460                 case KeyPress:
 461                         // key pressed
 462                         key = XLateKey (&event.xkey, &unicode);
 463                         Key_Event(key, unicode, true);
 464                         break;
 465
 466                 case KeyRelease:
 467                         // key released
 468                         key = XLateKey (&event.xkey, &unicode);
 469                         Key_Event(key, unicode, false);
 470                         break;
 471
 472                 case MotionNotify:
 473                         // mouse moved
 474                         if (vid_usingmouse)
 475                         {
 476 #if !defined(__APPLE__) && !defined(SUNOS)
 477                                 if (vid_usingdgamouse)
 478                                 {
 479                                         in_mouse_x += event.xmotion.x_root;
 480                                         in_mouse_y += event.xmotion.y_root;
 481                                 }
 482                                 else
 483 #endif
 484                                 {
 485                                         if (!event.xmotion.send_event)
 486                                         {
 487                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 488                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 489                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 490                                                 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)
 491                                                         dowarp = true;
 492                                         }
 493                                 }
 494                         }
 495                         in_windowmouse_x = event.xmotion.x;
 496                         in_windowmouse_y = event.xmotion.y;
 497                         break;
 498
 499                 case ButtonPress:
 500                         // mouse button pressed
 501                         if (event.xbutton.button <= 18)
 502                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 503                         else
 504                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 505                         break;
 506
 507                 case ButtonRelease:
 508                         // mouse button released
 509                         if (event.xbutton.button <= 18)
 510                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 511                         else
 512                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 513                         break;
 514
 515                 case CreateNotify:
 516                         // window created
 517                         win_x = event.xcreatewindow.x;
 518                         win_y = event.xcreatewindow.y;
 519                         break;
 520
 521                 case ConfigureNotify:
 522                         // window changed size/location
 523                         win_x = event.xconfigure.x;
 524                         win_y = event.xconfigure.y;
 525                         if(vid_resizable.integer < 2 || vid_isnetwmfullscreen)
 526                         {
 527                                 vid.width = event.xconfigure.width;
 528                                 vid.height = event.xconfigure.height;
 529                                 if(vid_isnetwmfullscreen)
 530                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 531                                 else
 532                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 533                         }
 534                         break;
 535                 case DestroyNotify:
 536                         // window has been destroyed
 537                         Sys_Quit(0);
 538                         break;
 539                 case ClientMessage:
 540                         // window manager messages
 541                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 542                                 Sys_Quit(0);
 543                         break;
 544                 case MapNotify:
 545                         if (vid_isoverrideredirect)
 546                                 break;
 547                         // window restored
 548                         vid_hidden = false;
 549                         VID_RestoreSystemGamma();
 550
 551                         if(vid_isvidmodefullscreen)
 552                         {
 553                                 // set our video mode
 554                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 555
 556                                 // Move the viewport to top left
 557                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 558                         }
 559
 560                         if(vid_isnetwmfullscreen)
 561                         {
 562                                 // make sure it's fullscreen
 563                                 XEvent event;
 564                                 event.type = ClientMessage;
 565                                 event.xclient.serial = 0;
 566                                 event.xclient.send_event = True;
 567                                 event.xclient.message_type = net_wm_state_atom;
 568                                 event.xclient.window = win;
 569                                 event.xclient.format = 32;
 570                                 event.xclient.data.l[0] = 1;
 571                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 572                                 event.xclient.data.l[2] = 0;
 573                                 event.xclient.data.l[3] = 1;
 574                                 event.xclient.data.l[4] = 0;
 575                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 576                         }
 577
 578                         dowarp = true;
 579
 580                         break;
 581                 case UnmapNotify:
 582                         if (vid_isoverrideredirect)
 583                                 break;
 584                         // window iconified/rolledup/whatever
 585                         vid_hidden = true;
 586                         VID_RestoreSystemGamma();
 587
 588                         if(vid_isvidmodefullscreen)
 589                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 590
 591                         break;
 592                 case FocusIn:
 593                         if (vid_isoverrideredirect)
 594                                 break;
 595                         // window is now the input focus
 596                         vid_activewindow = true;
 597                         break;
 598                 case FocusOut:
 599                         if (vid_isoverrideredirect)
 600                                 break;
 601
 602                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 603                         {
 604                                 // iconify netwm fullscreen window when it loses focus
 605                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 606                                 XEvent event;
 607                                 event.type = ClientMessage;
 608                                 event.xclient.serial = 0;
 609                                 event.xclient.send_event = True;
 610                                 event.xclient.message_type = net_wm_state_atom;
 611                                 event.xclient.window = win;
 612                                 event.xclient.format = 32;
 613                                 event.xclient.data.l[0] = 1;
 614                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 615                                 event.xclient.data.l[2] = 0;
 616                                 event.xclient.data.l[3] = 1;
 617                                 event.xclient.data.l[4] = 0;
 618                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 619                         }
 620
 621                         // window is no longer the input focus
 622                         vid_activewindow = false;
 623                         VID_RestoreSystemGamma();
 624
 625                         break;
 626                 case EnterNotify:
 627                         // mouse entered window
 628                         break;
 629                 case LeaveNotify:
 630                         // mouse left window
 631                         break;
 632                 }
 633         }
 634
 635         if (dowarp)
 636         {
 637                 /* move the mouse to the window center again */
 638                 // we'll catch the warp motion by its send_event flag, updating the
 639                 // stored mouse position without adding any delta motion
 640                 XEvent event;
 641                 event.type = MotionNotify;
 642                 event.xmotion.display = vidx11_display;
 643                 event.xmotion.window = win;
 644                 event.xmotion.x = vid.width / 2;
 645                 event.xmotion.y = vid.height / 2;
 646                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 647                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 648         }
 649 }
 650
 651 static void *prjobj = NULL;
 652
 653 static void GL_CloseLibrary(void)
 654 {
 655         if (prjobj)
 656                 dlclose(prjobj);
 657         prjobj = NULL;
 658         gl_driver[0] = 0;
 659         qglXGetProcAddressARB = NULL;
 660         gl_extensions = "";
 661         gl_platform = "";
 662         gl_platformextensions = "";
 663 }
 664
 665 static int GL_OpenLibrary(const char *name)
 666 {
 667         Con_Printf("Loading OpenGL driver %s\n", name);
 668         GL_CloseLibrary();
 669         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 670         {
 671                 Con_Printf("Unable to open symbol list for %s\n", name);
 672                 return false;
 673         }
 674         strlcpy(gl_driver, name, sizeof(gl_driver));
 675         return true;
 676 }
 677
 678 void *GL_GetProcAddress(const char *name)
 679 {
 680         void *p = NULL;
 681         if (qglXGetProcAddressARB != NULL)
 682                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 683         if (p == NULL)
 684                 p = (void *) dlsym(prjobj, name);
 685         return p;
 686 }
 687
 688 void VID_Shutdown(void)
 689 {
 690         if (!ctx || !vidx11_display)
 691                 return;
 692
 693         VID_SetMouse(false, false, false);
 694         VID_RestoreSystemGamma();
 695
 696         // FIXME: glXDestroyContext here?
 697         if (vid_isvidmodefullscreen)
 698                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 699         if (win)
 700                 XDestroyWindow(vidx11_display, win);
 701         XCloseDisplay(vidx11_display);
 702
 703         vid_hidden = true;
 704         vid_isfullscreen = false;
 705         vid_isnetwmfullscreen = false;
 706         vid_isvidmodefullscreen = false;
 707         vid_isoverrideredirect = false;
 708         vidx11_display = NULL;
 709         win = 0;
 710         ctx = NULL;
 711
 712         GL_CloseLibrary();
 713         Key_ClearStates ();
 714 }
 715
 716 void signal_handler(int sig)
 717 {
 718         Con_Printf("Received signal %d, exiting...\n", sig);
 719         VID_RestoreSystemGamma();
 720         Sys_Quit(1);
 721 }
 722
 723 void InitSig(void)
 724 {
 725         signal(SIGHUP, signal_handler);
 726         signal(SIGINT, signal_handler);
 727         signal(SIGQUIT, signal_handler);
 728         signal(SIGILL, signal_handler);
 729         signal(SIGTRAP, signal_handler);
 730         signal(SIGIOT, signal_handler);
 731         signal(SIGBUS, signal_handler);
 732         signal(SIGFPE, signal_handler);
 733         signal(SIGSEGV, signal_handler);
 734         signal(SIGTERM, signal_handler);
 735 }
 736
 737 void VID_Finish (void)
 738 {
 739         vid_usevsync = vid_vsync.integer && !cls.timedemo && qglXSwapIntervalSGI;
 740         if (vid_usingvsync != vid_usevsync)
 741         {
 742                 vid_usingvsync = vid_usevsync;
 743                 if (qglXSwapIntervalSGI (vid_usevsync))
 744                         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");
 745         }
 746
 747         if (!vid_hidden)
 748         {
 749                 CHECKGLERROR
 750                 if (r_speeds.integer == 2 || gl_finish.integer)
 751                 {
 752                         qglFinish();CHECKGLERROR
 753                 }
 754                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 755         }
 756
 757         if (vid_x11_hardwaregammasupported)
 758                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 759 }
 760
 761 int VID_SetGamma(unsigned short *ramps, int rampsize)
 762 {
 763         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 764 }
 765
 766 int VID_GetGamma(unsigned short *ramps, int rampsize)
 767 {
 768         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 769 }
 770
 771 void VID_Init(void)
 772 {
 773 #if !defined(__APPLE__) && !defined(SUNOS)
 774         Cvar_RegisterVariable (&vid_dgamouse);
 775 #endif
 776         Cvar_RegisterVariable (&vid_netwmfullscreen);
 777         InitSig(); // trap evil signals
 778 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 779         if (COM_CheckParm ("-nomouse"))
 780                 mouse_avail = false;
 781 }
 782
 783 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 784 {
 785         *attrib++ = GLX_RGBA;
 786         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 787         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 788         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 789         *attrib++ = GLX_DOUBLEBUFFER;
 790         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 791         // if stencil is enabled, ask for alpha too
 792         if (stencil)
 793         {
 794                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 795                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 796         }
 797         if (stereobuffer)
 798                 *attrib++ = GLX_STEREO;
 799         if (samples > 1)
 800         {
 801                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 802                 *attrib++ = 1;
 803                 *attrib++ = GLX_SAMPLES_ARB;
 804                 *attrib++ = samples;
 805         }
 806         *attrib++ = None;
 807 }
 808
 809 qboolean VID_InitMode(viddef_mode_t *mode)
 810 {
 811         int i, j;
 812         int attrib[32];
 813         XSetWindowAttributes attr;
 814         XClassHint *clshints;
 815         XWMHints *wmhints;
 816         XSizeHints *szhints;
 817         unsigned long mask;
 818         XVisualInfo *visinfo;
 819         int MajorVersion, MinorVersion;
 820         const char *drivername;
 821         char *xpm;
 822         char **idata;
 823         unsigned char *data;
 824
 825         vid_isfullscreen = false;
 826         vid_isnetwmfullscreen = false;
 827         vid_isvidmodefullscreen = false;
 828         vid_isoverrideredirect = false;
 829
 830 #if defined(__APPLE__) && defined(__MACH__)
 831         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 832 #else
 833         drivername = "libGL.so.1";
 834 #endif
 835 // 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
 836 // 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
 837 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 838         i = COM_CheckParm("-gl_driver");
 839         if (i && i < com_argc - 1)
 840                 drivername = com_argv[i + 1];
 841         if (!GL_OpenLibrary(drivername))
 842         {
 843                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 844                 return false;
 845         }
 846
 847         if (!(vidx11_display = XOpenDisplay(NULL)))
 848         {
 849                 Con_Print("Couldn't open the X display\n");
 850                 return false;
 851         }
 852
 853         // LordHavoc: making the close button on a window do the right thing
 854         // seems to involve this mess, sigh...
 855         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 856         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 857         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 858         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 859         net_wm_icon = XInternAtom(vidx11_display, "_NET_WM_ICON", false);
 860         cardinal = XInternAtom(vidx11_display, "CARDINAL", false);
 861
 862         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 863         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 864
 865         vidx11_screen = DefaultScreen(vidx11_display);
 866         root = RootWindow(vidx11_display, vidx11_screen);
 867
 868         // Get video mode list
 869         MajorVersion = MinorVersion = 0;
 870         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 871                 vidmode_ext = false;
 872         else
 873         {
 874                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 875                 vidmode_ext = true;
 876         }
 877
 878         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 879          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 880          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 881          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 882          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 883          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 884         {
 885                 Con_Printf("glX functions not found in %s\n", gl_driver);
 886                 return false;
 887         }
 888
 889         VID_BuildGLXAttrib(attrib, mode->bitsperpixel == 32, mode->stereobuffer, mode->samples);
 890         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 891         if (!visinfo)
 892         {
 893                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 894                 return false;
 895         }
 896
 897         if (mode->fullscreen)
 898         {
 899                 if(vid_netwmfullscreen.integer)
 900                 {
 901                         // TODO detect WM support
 902                         vid_isnetwmfullscreen = true;
 903                         vid_isfullscreen = true;
 904                         // width and height will be filled in later
 905                         Con_DPrintf("Using NetWM fullscreen mode\n");
 906                 }
 907
 908                 if(!vid_isfullscreen && vidmode_ext)
 909                 {
 910                         int best_fit, best_dist, dist, x, y;
 911
 912                         // Are we going fullscreen?  If so, let's change video mode
 913                         XF86VidModeModeLine *current_vidmode;
 914                         XF86VidModeModeInfo **vidmodes;
 915                         int num_vidmodes;
 916
 917                         // This nice hack comes from the SDL source code
 918                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 919                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 920
 921                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 922                         best_dist = 0;
 923                         best_fit = -1;
 924
 925                         for (i = 0; i < num_vidmodes; i++)
 926                         {
 927                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
 928                                         continue;
 929
 930                                 x = mode->width - vidmodes[i]->hdisplay;
 931                                 y = mode->height - vidmodes[i]->vdisplay;
 932                                 dist = (x * x) + (y * y);
 933                                 if (best_fit == -1 || dist < best_dist)
 934                                 {
 935                                         best_dist = dist;
 936                                         best_fit = i;
 937                                 }
 938                         }
 939
 940                         if (best_fit != -1)
 941                         {
 942                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 943                                 // to width/height =, so the window will take the full area of
 944                                 // the mode chosen
 945                                 mode->width = vidmodes[best_fit]->hdisplay;
 946                                 mode->height = vidmodes[best_fit]->vdisplay;
 947
 948                                 // change to the mode
 949                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 950                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 951                                 vid_isvidmodefullscreen = true;
 952                                 vid_isfullscreen = true;
 953
 954                                 // Move the viewport to top left
 955                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 956                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
 957                         }
 958
 959                         free(vidmodes);
 960                 }
 961
 962                 if(!vid_isfullscreen)
 963                 {
 964                         // sorry, no FS available
 965                         // use the full desktop resolution
 966                         vid_isfullscreen = true;
 967                         // width and height will be filled in later
 968                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
 969                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
 970                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
 971                 }
 972         }
 973
 974         // LordHavoc: save the visual for use in gamma ramp settings later
 975         vidx11_visual = visinfo->visual;
 976
 977         /* window attributes */
 978         attr.background_pixel = 0;
 979         attr.border_pixel = 0;
 980         // LordHavoc: save the colormap for later, too
 981         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 982         attr.event_mask = X_MASK;
 983
 984         if (mode->fullscreen)
 985         {
 986                 if(vid_isnetwmfullscreen)
 987                 {
 988                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 989                         attr.backing_store = NotUseful;
 990                         attr.save_under = False;
 991                 }
 992                 else
 993                 {
 994                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 995                         attr.override_redirect = True;
 996                         attr.backing_store = NotUseful;
 997                         attr.save_under = False;
 998                         vid_isoverrideredirect = true; // so it knows to grab
 999                 }
1000         }
1001         else
1002         {
1003                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1004         }
1005
1006         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
1007
1008         data = loadimagepixelsbgra("darkplaces-icon", false, false, false, NULL);
1009         if(data)
1010         {
1011                 // use _NET_WM_ICON too
1012                 static long netwm_icon[MAX_NETWM_ICON];
1013                 int pos = 0;
1014                 int i = 1;
1015
1016                 while(data)
1017                 {
1018                         if(pos + 2 * image_width * image_height < MAX_NETWM_ICON)
1019                         {
1020                                 netwm_icon[pos++] = image_width;
1021                                 netwm_icon[pos++] = image_height;
1022                                 for(i = 0; i < image_height; ++i)
1023                                         for(j = 0; j < image_width; ++j)
1024                                                 netwm_icon[pos++] = BuffLittleLong(&data[(i*image_width+j)*4]);
1025                         }
1026                         else
1027                         {
1028                                 Con_Printf("Skipping NETWM icon #%d because there is no space left\n", i);
1029                         }
1030                         ++i;
1031                         Mem_Free(data);
1032                         data = loadimagepixelsbgra(va("darkplaces-icon%d", i), false, false, false, NULL);
1033                 }
1034                 XChangeProperty(vidx11_display, win, net_wm_icon, cardinal, 32, PropModeReplace, (const unsigned char *) netwm_icon, pos);
1035         }
1036
1037         // fallthrough for old window managers
1038         xpm = (char *) FS_LoadFile("darkplaces-icon.xpm", tempmempool, false, NULL);
1039         idata = NULL;
1040         if(xpm)
1041                 idata = XPM_DecodeString(xpm);
1042         if(!idata)
1043                 idata = ENGINE_ICON;
1044
1045         wmhints = XAllocWMHints();
1046         if(XpmCreatePixmapFromData(vidx11_display, win,
1047                 idata,
1048                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1049                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1050
1051         if(xpm)
1052                 Mem_Free(xpm);
1053
1054         clshints = XAllocClassHint();
1055         clshints->res_name = strdup(gamename);
1056         clshints->res_class = strdup("DarkPlaces");
1057
1058         szhints = XAllocSizeHints();
1059         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1060         {
1061                 szhints->min_width = szhints->max_width = mode->width;
1062                 szhints->min_height = szhints->max_height = mode->height;
1063                 szhints->flags |= PMinSize | PMaxSize;
1064         }
1065
1066         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1067         // strdup() allocates using malloc(), should be freed with free()
1068         free(clshints->res_name);
1069         free(clshints->res_class);
1070         XFree(clshints);
1071         XFree(wmhints);
1072         XFree(szhints);
1073
1074         //XStoreName(vidx11_display, win, gamename);
1075         XMapWindow(vidx11_display, win);
1076
1077         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1078
1079         if (vid_isoverrideredirect)
1080         {
1081                 XMoveWindow(vidx11_display, win, 0, 0);
1082                 XRaiseWindow(vidx11_display, win);
1083                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1084                 XFlush(vidx11_display);
1085         }
1086
1087         if(vid_isvidmodefullscreen)
1088         {
1089                 // Move the viewport to top left
1090                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1091         }
1092
1093         //XSync(vidx11_display, False);
1094
1095         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1096         XFree(visinfo); // glXChooseVisual man page says to use XFree to free visinfo
1097         if (!ctx)
1098         {
1099                 Con_Printf ("glXCreateContext failed\n");
1100                 return false;
1101         }
1102
1103         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1104         {
1105                 Con_Printf ("glXMakeCurrent failed\n");
1106                 return false;
1107         }
1108
1109         XSync(vidx11_display, False);
1110
1111         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1112         {
1113                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1114                 return false;
1115         }
1116
1117         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1118         gl_platform = "GLX";
1119         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1120
1121 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1122 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1123 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1124         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1125 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1126 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1127 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1128         GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1129
1130         vid_usingmousegrab = false;
1131         vid_usingmouse = false;
1132         vid_usinghidecursor = false;
1133         vid_usingvsync = false;
1134         vid_hidden = false;
1135         vid_activewindow = true;
1136         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1137 #if !defined(__APPLE__) && !defined(SUNOS)
1138         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1139         if (!vid_x11_dgasupported)
1140                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1141 #endif
1142
1143         GL_Init();
1144         return true;
1145 }
1146
1147 void Sys_SendKeyEvents(void)
1148 {
1149         static qboolean sound_active = true;
1150
1151         // enable/disable sound on focus gain/loss
1152         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1153         {
1154                 if (!sound_active)
1155                 {
1156                         S_UnblockSound ();
1157                         sound_active = true;
1158                 }
1159         }
1160         else
1161         {
1162                 if (sound_active)
1163                 {
1164                         S_BlockSound ();
1165                         sound_active = false;
1166                 }
1167         }
1168
1169         HandleEvents();
1170 }
1171
1172 void IN_Move (void)
1173 {
1174 }
1175
1176 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1177 {
1178         if(vidmode_ext)
1179         {
1180                 int i, bpp;
1181                 size_t k;
1182                 XF86VidModeModeInfo **vidmodes;
1183                 int num_vidmodes;
1184
1185                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1186                 k = 0;
1187                 for (i = 0; i < num_vidmodes; i++)
1188                 {
1189                         if(k >= maxcount)
1190                                 break;
1191                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1192                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1193                         {
1194                                 if(k >= maxcount)
1195                                         break;
1196                                 modes[k].width = vidmodes[i]->hdisplay;
1197                                 modes[k].height = vidmodes[i]->vdisplay;
1198                                 modes[k].bpp = 8;
1199                                 if(vidmodes[i]->dotclock && vidmodes[i]->htotal && vidmodes[i]->vtotal)
1200                                         modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1201                                 else
1202                                         modes[k].refreshrate = 60;
1203                                 modes[k].pixelheight_num = 1;
1204                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1205                                 ++k;
1206                         }
1207                 }
1208                 // manpage of XF86VidModeGetAllModeLines says it should be freed by the caller
1209                 XFree(vidmodes);
1210                 return k;
1211         }
1212         return 0; // FIXME implement this
1213 }