vid_glx.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 #include <termios.h>
  21 #include <sys/ioctl.h>
  22 #include <sys/stat.h>
  23 #include <sys/vt.h>
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26 #include <signal.h>
  27
  28 #include <dlfcn.h>
  29
  30 #include "quakedef.h"
  31
  32 #include <GL/glx.h>
  33
  34 #include <X11/keysym.h>
  35 #include <X11/cursorfont.h>
  36
  37 #include <X11/extensions/XShm.h>
  38 #include <X11/extensions/xf86dga.h>
  39 #include <X11/extensions/xf86vmode.h>
  40
  41 static Display *vidx11_display = NULL;
  42 static int scrnum;
  43 static Window win;
  44 static GLXContext ctx = NULL;
  45
  46 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  47 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  48                     PointerMotionMask | ButtonMotionMask )
  49 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | StructureNotifyMask )
  50
  51
  52 viddef_t        vid;                            // global video state
  53
  54 static qboolean         mouse_avail = true;
  55 static qboolean         mouse_active = false, usingmouse = false;
  56 static float    mouse_x, mouse_y;
  57 static int p_mouse_x, p_mouse_y;
  58
  59 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  60 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
  61
  62 qboolean vidmode_ext = false;
  63
  64 static int win_x, win_y;
  65
  66 static int scr_width, scr_height;
  67
  68 static XF86VidModeModeInfo **vidmodes;
  69 static int num_vidmodes;
  70 static qboolean vidmode_active = false;
  71
  72 static Visual *vidx11_visual;
  73 static Colormap vidx11_colormap;
  74
  75 /*-----------------------------------------------------------------------*/
  76
  77 const char *gl_vendor;
  78 const char *gl_renderer;
  79 const char *gl_version;
  80 const char *gl_extensions;
  81
  82 /*-----------------------------------------------------------------------*/
  83 static int
  84 XLateKey(XKeyEvent *ev)
  85 {
  86         int key = 0;
  87         KeySym keysym;
  88
  89         keysym = XLookupKeysym(ev, 0);
  90
  91         switch(keysym)
  92         {
  93                 case XK_KP_Page_Up:     key = KP_PGUP; break;
  94                 case XK_Page_Up:        key = K_PGUP; break;
  95
  96                 case XK_KP_Page_Down:   key = KP_PGDN; break;
  97                 case XK_Page_Down:      key = K_PGDN; break;
  98
  99                 case XK_KP_Home:        key = KP_HOME; break;
 100                 case XK_Home:           key = K_HOME; break;
 101
 102                 case XK_KP_End:         key = KP_END; break;
 103                 case XK_End:            key = K_END; break;
 104
 105                 case XK_KP_Left:        key = KP_LEFTARROW; break;
 106                 case XK_Left:           key = K_LEFTARROW; break;
 107
 108                 case XK_KP_Right:       key = KP_RIGHTARROW; break;
 109                 case XK_Right:          key = K_RIGHTARROW; break;
 110
 111                 case XK_KP_Down:        key = KP_DOWNARROW; break;
 112                 case XK_Down:           key = K_DOWNARROW; break;
 113
 114                 case XK_KP_Up:          key = KP_UPARROW; break;
 115                 case XK_Up:                     key = K_UPARROW; break;
 116
 117                 case XK_Escape:         key = K_ESCAPE; break;
 118
 119                 case XK_KP_Enter:       key = KP_ENTER; break;
 120                 case XK_Return:         key = K_ENTER; break;
 121
 122                 case XK_Tab:            key = K_TAB; break;
 123
 124                 case XK_F1:                     key = K_F1; break;
 125                 case XK_F2:                     key = K_F2; break;
 126                 case XK_F3:                     key = K_F3; break;
 127                 case XK_F4:                     key = K_F4; break;
 128                 case XK_F5:                     key = K_F5; break;
 129                 case XK_F6:                     key = K_F6; break;
 130                 case XK_F7:                     key = K_F7; break;
 131                 case XK_F8:                     key = K_F8; break;
 132                 case XK_F9:                     key = K_F9; break;
 133                 case XK_F10:            key = K_F10; break;
 134                 case XK_F11:            key = K_F11; break;
 135                 case XK_F12:            key = K_F12; break;
 136
 137                 case XK_BackSpace:      key = K_BACKSPACE; break;
 138
 139                 case XK_KP_Delete:      key = KP_DEL; break;
 140                 case XK_Delete:         key = K_DEL; break;
 141
 142                 case XK_Pause:          key = K_PAUSE; break;
 143
 144                 case XK_Shift_L:
 145                 case XK_Shift_R:        key = K_SHIFT; break;
 146
 147                 case XK_Execute:
 148                 case XK_Control_L:
 149                 case XK_Control_R:      key = K_CTRL; break;
 150
 151                 case XK_Mode_switch:
 152                 case XK_Alt_L:
 153                 case XK_Meta_L:
 154                 case XK_Alt_R:
 155                 case XK_Meta_R:         key = K_ALT; break;
 156
 157                 case XK_Caps_Lock:      key = K_CAPSLOCK; break;
 158                 case XK_KP_Begin:       key = KP_5; break;
 159
 160                 case XK_Insert:         key = K_INS; break;
 161                 case XK_KP_Insert:      key = KP_INS; break;
 162
 163                 case XK_KP_Multiply:    key = KP_MULTIPLY; break;
 164                 case XK_KP_Add:         key = KP_PLUS; break;
 165                 case XK_KP_Subtract:    key = KP_MINUS; break;
 166                 case XK_KP_Divide:      key = KP_DIVIDE; break;
 167
 168                 /* For Sun keyboards */
 169                 case XK_F27:            key = K_HOME; break;
 170                 case XK_F29:            key = K_PGUP; break;
 171                 case XK_F33:            key = K_END; break;
 172                 case XK_F35:            key = K_PGDN; break;
 173
 174                 default:
 175                         if (keysym < 128)
 176                         {
 177                                 /* ASCII keys */
 178                                 key = keysym;
 179                                 if ((key >= 'A') && (key <= 'Z'))
 180                                         key = key + ('a' - 'A');
 181                         }
 182                         break;
 183         }
 184
 185         return key;
 186 }
 187
 188 static Cursor CreateNullCursor(Display *display, Window root)
 189 {
 190         Pixmap cursormask;
 191         XGCValues xgc;
 192         GC gc;
 193         XColor dummycolour;
 194         Cursor cursor;
 195
 196         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 197         xgc.function = GXclear;
 198         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 199         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 200         dummycolour.pixel = 0;
 201         dummycolour.red = 0;
 202         dummycolour.flags = 04;
 203         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 204         XFreePixmap(display,cursormask);
 205         XFreeGC(display,gc);
 206         return cursor;
 207 }
 208
 209 static void install_grabs(void)
 210 {
 211         XWindowAttributes attribs_1;
 212         XSetWindowAttributes attribs_2;
 213
 214         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 215         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 216         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 217
 218 // inviso cursor
 219         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 220
 221         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 222
 223         if (vid_dga.integer)
 224         {
 225                 int MajorVersion, MinorVersion;
 226
 227                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 228                 {
 229                         // unable to query, probalby not supported
 230                         Con_Printf( "Failed to detect XF86DGA Mouse\n" );
 231                         vid_dga.integer = 0;
 232                 }
 233                 else
 234                 {
 235                         vid_dga.integer = 1;
 236                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 237                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 238                 }
 239         }
 240         else
 241                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 242
 243         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 244
 245         mouse_active = true;
 246         mouse_x = mouse_y = 0;
 247 }
 248
 249 static void uninstall_grabs(void)
 250 {
 251         if (!vidx11_display || !win)
 252                 return;
 253
 254         if (vid_dga.integer == 1)
 255                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 256
 257         XUngrabPointer(vidx11_display, CurrentTime);
 258         XUngrabKeyboard(vidx11_display, CurrentTime);
 259
 260 // inviso cursor
 261         XUndefineCursor(vidx11_display, win);
 262
 263         mouse_active = false;
 264 }
 265
 266 static void HandleEvents(void)
 267 {
 268         XEvent event;
 269         qboolean dowarp = false;
 270
 271         if (!vidx11_display)
 272                 return;
 273
 274         while (XPending(vidx11_display))
 275         {
 276                 XNextEvent(vidx11_display, &event);
 277
 278                 switch (event.type)
 279                 {
 280                 case KeyPress:
 281                 case KeyRelease:
 282                         Key_Event(XLateKey(&event.xkey), event.type == KeyPress);
 283                         break;
 284
 285                 case MotionNotify:
 286                         if (usingmouse)
 287                         {
 288                                 if (vid_dga.integer == 1)
 289                                 {
 290                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 291                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 292                                 }
 293                                 else
 294                                 {
 295
 296                                         if (!event.xmotion.send_event)
 297                                         {
 298                                                 mouse_x += event.xmotion.x - p_mouse_x;
 299                                                 mouse_y += event.xmotion.y - p_mouse_y;
 300                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 301                                                         dowarp = true;
 302                                         }
 303                                         p_mouse_x = event.xmotion.x;
 304                                         p_mouse_y = event.xmotion.y;
 305                                 }
 306                         }
 307                         else
 308                                 ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 309                         break;
 310
 311                 case ButtonPress:
 312                         switch(event.xbutton.button)
 313                         {
 314                         case 1:
 315                                 Key_Event(K_MOUSE1, true);
 316                                 break;
 317                         case 2:
 318                                 Key_Event(K_MOUSE3, true);
 319                                 break;
 320                         case 3:
 321                                 Key_Event(K_MOUSE2, true);
 322                                 break;
 323                         case 4:
 324                                 Key_Event(K_MWHEELUP, true);
 325                                 break;
 326                         case 5:
 327                                 Key_Event(K_MWHEELDOWN, true);
 328                                 break;
 329                 default:
 330                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-5 expected\n", event.xbutton.button);
 331                                 break;
 332                         }
 333                         break;
 334
 335                 case ButtonRelease:
 336                         switch(event.xbutton.button)
 337                         {
 338                         case 1:
 339                                 Key_Event(K_MOUSE1, false);
 340                                 break;
 341                         case 2:
 342                                 Key_Event(K_MOUSE3, false);
 343                                 break;
 344                         case 3:
 345                                 Key_Event(K_MOUSE2, false);
 346                                 break;
 347                         case 4:
 348                                 Key_Event(K_MWHEELUP, false);
 349                                 break;
 350                         case 5:
 351                                 Key_Event(K_MWHEELDOWN, false);
 352                                 break;
 353                 default:
 354                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-5 expected\n", event.xbutton.button);
 355                                 break;
 356                         }
 357                         break;
 358
 359                 case CreateNotify :
 360                         win_x = event.xcreatewindow.x;
 361                         win_y = event.xcreatewindow.y;
 362                         break;
 363
 364                 case ConfigureNotify :
 365                         win_x = event.xconfigure.x;
 366                         win_y = event.xconfigure.y;
 367                         break;
 368                 }
 369         }
 370
 371         if (dowarp)
 372         {
 373                 /* move the mouse to the window center again */
 374                 p_mouse_x = scr_width / 2;
 375                 p_mouse_y = scr_height / 2;
 376                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 377         }
 378
 379 }
 380
 381 static void IN_DeactivateMouse( void )
 382 {
 383         if (!mouse_avail || !vidx11_display || !win)
 384                 return;
 385
 386         if (mouse_active)
 387         {
 388                 uninstall_grabs();
 389                 mouse_active = false;
 390         }
 391 }
 392
 393 static void IN_ActivateMouse( void )
 394 {
 395         if (!mouse_avail || !vidx11_display || !win)
 396                 return;
 397
 398         if (!mouse_active)
 399         {
 400                 mouse_x = mouse_y = 0; // don't spazz
 401                 install_grabs();
 402                 mouse_active = true;
 403         }
 404 }
 405
 406
 407 void VID_Shutdown(void)
 408 {
 409         if (!ctx || !vidx11_display)
 410                 return;
 411
 412         if (vidx11_display)
 413         {
 414                 uninstall_grabs();
 415
 416                 if (vidmode_active)
 417                         XF86VidModeSwitchToMode(vidx11_display, scrnum, vidmodes[0]);
 418                 if (win)
 419                         XDestroyWindow(vidx11_display, win);
 420                 XCloseDisplay(vidx11_display);
 421         }
 422         vidmode_active = false;
 423         vidx11_display = NULL;
 424         win = 0;
 425         ctx = NULL;
 426 }
 427
 428 void signal_handler(int sig)
 429 {
 430         printf("Received signal %d, exiting...\n", sig);
 431         Sys_Quit();
 432         exit(0);
 433 }
 434
 435 void InitSig(void)
 436 {
 437         signal(SIGHUP, signal_handler);
 438         signal(SIGINT, signal_handler);
 439         signal(SIGQUIT, signal_handler);
 440         signal(SIGILL, signal_handler);
 441         signal(SIGTRAP, signal_handler);
 442         signal(SIGIOT, signal_handler);
 443         signal(SIGBUS, signal_handler);
 444         signal(SIGFPE, signal_handler);
 445         signal(SIGSEGV, signal_handler);
 446         signal(SIGTERM, signal_handler);
 447 }
 448
 449 /*
 450 =================
 451 VID_GetWindowSize
 452 =================
 453 */
 454 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 455 {
 456         *x = *y = 0;
 457         *width = scr_width;
 458         *height = scr_height;
 459 }
 460
 461 void VID_Finish (void)
 462 {
 463         int usemouse;
 464         if (r_render.integer)
 465         {
 466                 qglFinish();
 467                 glXSwapBuffers(vidx11_display, win);
 468         }
 469
 470 // handle the mouse state when windowed if that's changed
 471         usemouse = false;
 472         if (vid_mouse.integer && key_dest == key_game)
 473                 usemouse = true;
 474         if (vidmode_active)
 475                 usemouse = true;
 476         if (usemouse)
 477         {
 478                 if (!usingmouse)
 479                 {
 480                         usingmouse = true;
 481                         IN_ActivateMouse ();
 482                 }
 483         }
 484         else
 485         {
 486                 if (usingmouse)
 487                 {
 488                         usingmouse = false;
 489                         IN_DeactivateMouse ();
 490                 }
 491         }
 492 }
 493
 494 // LordHavoc: ported from SDL 1.2.2, this was far more difficult to port from
 495 // SDL than to simply use the XFree gamma ramp extension, but that affects the
 496 // whole screen even when the game window is inactive, this only affects the
 497 // screen while the window is active, very desirable behavior :)
 498 int VID_SetGamma(float prescale, float gamma, float scale, float base)
 499 {
 500 // LordHavoc: FIXME: finish this code, we need to allocate colors before we can store them
 501 #if 1
 502         return FALSE;
 503 #else
 504         int i, ncolors, c;
 505         unsigned int Rmask, Gmask, Bmask, Rloss, Gloss, Bloss, Rshift, Gshift, Bshift, mask;
 506         XColor xcmap[256];
 507         unsigned short ramp[256];
 508
 509         if (COM_CheckParm("-nogamma"))
 510                 return FALSE;
 511
 512         if (vidx11_visual->class != DirectColor)
 513         {
 514                 Con_Printf("X11 Visual class is %d, can only do gamma on %d\n", vidx11_visual->class, DirectColor);
 515                 return FALSE;
 516         }
 517
 518         Rmask = vidx11_visual->red_mask;
 519         Gmask = vidx11_visual->green_mask;
 520         Bmask = vidx11_visual->blue_mask;
 521
 522         Rshift = 0;
 523         Rloss = 8;
 524         if ((mask = Rmask))
 525         {
 526                 for (;!(mask & 1);mask >>= 1)
 527                         ++Rshift;
 528                 for (;(mask & 1);mask >>= 1)
 529                         --Rloss;
 530         }
 531         Gshift = 0;
 532         Gloss = 8;
 533         if ((mask = Gmask))
 534         {
 535                 for (;!(mask & 1);mask >>= 1)
 536                         ++Gshift;
 537                 for (;(mask & 1);mask >>= 1)
 538                         --Gloss;
 539         }
 540         Bshift = 0;
 541         Bloss = 8;
 542         if ((mask = Bmask))
 543         {
 544                 for (;!(mask & 1);mask >>= 1)
 545                         ++Bshift;
 546                 for (;(mask & 1);mask >>= 1)
 547                         --Bloss;
 548         }
 549
 550         BuildGammaTable16(prescale, gamma, scale, base, ramp);
 551
 552         // convert gamma ramp to palette (yes this seems odd)
 553         ncolors = vidx11_visual->map_entries;
 554         for (i = 0;i < ncolors;i++)
 555         {
 556                 c = (256 * i / ncolors);
 557                 xcmap[i].pixel = ((c >> Rloss) << Rshift) | ((c >> Gloss) << Gshift) | ((c >> Bloss) << Bshift);
 558                 xcmap[i].red   = ramp[c];
 559                 xcmap[i].green = ramp[c];
 560                 xcmap[i].blue  = ramp[c];
 561                 xcmap[i].flags = (DoRed|DoGreen|DoBlue);
 562         }
 563         XStoreColors(vidx11_display, vidx11_colormap, xcmap, ncolors);
 564         XSync(vidx11_display, false);
 565         // FIXME: should this check for BadAccess/BadColor/BadValue errors produced by XStoreColors before setting this true?
 566         return TRUE;
 567 #endif
 568 }
 569
 570 void VID_Init(void)
 571 {
 572         int i;
 573 // LordHavoc: FIXME: finish this code, we need to allocate colors before we can store them
 574 #if 0
 575         int gammaattrib[] =
 576         {
 577                 GLX_RGBA,
 578                 GLX_RED_SIZE, 1,
 579                 GLX_GREEN_SIZE, 1,
 580                 GLX_BLUE_SIZE, 1,
 581                 GLX_DOUBLEBUFFER,
 582                 GLX_DEPTH_SIZE, 1,
 583                 GLX_X_VISUAL_TYPE, GLX_DIRECT_COLOR,
 584                 None
 585         };
 586 #endif
 587         int nogammaattrib[] =
 588         {
 589                 GLX_RGBA,
 590                 GLX_RED_SIZE, 1,
 591                 GLX_GREEN_SIZE, 1,
 592                 GLX_BLUE_SIZE, 1,
 593                 GLX_DOUBLEBUFFER,
 594                 GLX_DEPTH_SIZE, 1,
 595                 None
 596         };
 597         int width = 640, height = 480;
 598         XSetWindowAttributes attr;
 599         unsigned long mask;
 600         Window root;
 601         XVisualInfo *visinfo;
 602         qboolean fullscreen = true;
 603         int MajorVersion, MinorVersion;
 604
 605         Cvar_RegisterVariable (&vid_dga);
 606         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 607
 608 // interpret command-line params
 609
 610 // set vid parameters
 611         if ((i = COM_CheckParm("-window")) != 0)
 612                 fullscreen = false;
 613
 614         if ((i = COM_CheckParm("-width")) != 0)
 615                 width = atoi(com_argv[i+1]);
 616
 617         if ((i = COM_CheckParm("-height")) != 0)
 618                 height = atoi(com_argv[i+1]);
 619
 620         if ((i = COM_CheckParm("-conwidth")) != 0)
 621                 vid.conwidth = atoi(com_argv[i+1]);
 622         else
 623                 vid.conwidth = 640;
 624
 625         vid.conwidth &= 0xfff8; // make it a multiple of eight
 626
 627         if (vid.conwidth < 320)
 628                 vid.conwidth = 320;
 629
 630         // pick a conheight that matches with correct aspect
 631         vid.conheight = vid.conwidth*3 / 4;
 632
 633         if ((i = COM_CheckParm("-conheight")) != 0)
 634                 vid.conheight = atoi(com_argv[i+1]);
 635         if (vid.conheight < 200)
 636                 vid.conheight = 200;
 637
 638         if (!(vidx11_display = XOpenDisplay(NULL)))
 639         {
 640                 fprintf(stderr, "Error couldn't open the X display\n");
 641                 exit(1);
 642         }
 643
 644         scrnum = DefaultScreen(vidx11_display);
 645         root = RootWindow(vidx11_display, scrnum);
 646
 647         // Get video mode list
 648         MajorVersion = MinorVersion = 0;
 649         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 650                 vidmode_ext = false;
 651         else
 652         {
 653                 Con_Printf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 654                 vidmode_ext = true;
 655         }
 656
 657         visinfo = NULL;
 658 // LordHavoc: FIXME: finish this code, we need to allocate colors before we can store them
 659 #if 0
 660         if (!COM_CheckParm("-nogamma"))
 661                 visinfo = glXChooseVisual(vidx11_display, scrnum, gammaattrib);
 662 #endif
 663         if (!visinfo)
 664         {
 665                 visinfo = glXChooseVisual(vidx11_display, scrnum, nogammaattrib);
 666                 if (!visinfo)
 667                 {
 668                         fprintf(stderr, "qkHack: Error couldn't get an RGB, Double-buffered, Depth visual\n");
 669                         exit(1);
 670                 }
 671         }
 672
 673         if (vidmode_ext)
 674         {
 675                 int best_fit, best_dist, dist, x, y;
 676
 677                 XF86VidModeGetAllModeLines(vidx11_display, scrnum, &num_vidmodes, &vidmodes);
 678
 679                 // Are we going fullscreen?  If so, let's change video mode
 680                 if (fullscreen)
 681                 {
 682                         best_dist = 9999999;
 683                         best_fit = -1;
 684
 685                         for (i = 0; i < num_vidmodes; i++)
 686                         {
 687                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 688                                         continue;
 689
 690                                 x = width - vidmodes[i]->hdisplay;
 691                                 y = height - vidmodes[i]->vdisplay;
 692                                 dist = (x * x) + (y * y);
 693                                 if (dist < best_dist)
 694                                 {
 695                                         best_dist = dist;
 696                                         best_fit = i;
 697                                 }
 698                         }
 699
 700                         if (best_fit != -1)
 701                         {
 702                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 703                                 // to width/height =, so the window will take the full area of
 704                                 // the mode chosen
 705                                 width = vidmodes[best_fit]->hdisplay;
 706                                 height = vidmodes[best_fit]->vdisplay;
 707
 708                                 // change to the mode
 709                                 XF86VidModeSwitchToMode(vidx11_display, scrnum, vidmodes[best_fit]);
 710                                 vidmode_active = true;
 711
 712                                 // Move the viewport to top left
 713                                 XF86VidModeSetViewPort(vidx11_display, scrnum, 0, 0);
 714                         }
 715                         else
 716                                 fullscreen = 0;
 717                 }
 718         }
 719
 720         // LordHavoc: save the visual for use in gamma ramp settings later
 721         vidx11_visual = visinfo->visual;
 722
 723         /* window attributes */
 724         attr.background_pixel = 0;
 725         attr.border_pixel = 0;
 726         // LordHavoc: save the colormap for later, too
 727         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 728         attr.event_mask = X_MASK;
 729         if (vidmode_active)
 730         {
 731                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 732                 attr.override_redirect = True;
 733                 attr.backing_store = NotUseful;
 734                 attr.save_under = False;
 735         }
 736         else
 737                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 738
 739         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 740         XStoreName(vidx11_display, win, gamename);
 741         XMapWindow(vidx11_display, win);
 742
 743         if (vidmode_active)
 744         {
 745                 XMoveWindow(vidx11_display, win, 0, 0);
 746                 XRaiseWindow(vidx11_display, win);
 747                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 748                 XFlush(vidx11_display);
 749                 // Move the viewport to top left
 750                 XF86VidModeSetViewPort(vidx11_display, scrnum, 0, 0);
 751         }
 752
 753         XFlush(vidx11_display);
 754
 755         ctx = glXCreateContext(vidx11_display, visinfo, NULL, True);
 756
 757         glXMakeCurrent(vidx11_display, win, ctx);
 758
 759         scr_width = width;
 760         scr_height = height;
 761
 762         if (vid.conheight > height)
 763                 vid.conheight = height;
 764         if (vid.conwidth > width)
 765                 vid.conwidth = width;
 766
 767         InitSig(); // trap evil signals
 768
 769         GL_Init();
 770
 771         Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
 772 }
 773
 774 void Sys_SendKeyEvents(void)
 775 {
 776         HandleEvents();
 777 }
 778
 779 void IN_Init(void)
 780 {
 781         if (COM_CheckParm ("-nomouse"))
 782                 mouse_avail = false;
 783 }
 784
 785 void IN_Shutdown(void)
 786 {
 787 }
 788
 789 /*
 790 ===========
 791 IN_Commands
 792 ===========
 793 */
 794 void IN_Commands (void)
 795 {
 796 }
 797
 798 void IN_Move (usercmd_t *cmd)
 799 {
 800         if (mouse_avail)
 801                 IN_Mouse(cmd, mouse_x, mouse_y);
 802         mouse_x = 0;
 803         mouse_y = 0;
 804 }
 805