vid_glx.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 //#include <termios.h>
  21 //#include <sys/ioctl.h>
  22 //#include <sys/stat.h>
  23 //#include <sys/vt.h>
  24 //#include <stdarg.h>
  25 //#include <stdio.h>
  26 #include <signal.h>
  27
  28 #include <dlfcn.h>
  29
  30 #include <X11/Xlib.h>
  31 #include <X11/Xutil.h>
  32 #include <GL/glx.h>
  33
  34 #include <X11/keysym.h>
  35 #include <X11/cursorfont.h>
  36
  37 #include <X11/extensions/XShm.h>
  38 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
  39 #include <X11/extensions/xf86dga.h>
  40 #endif
  41 #include <X11/extensions/xf86vmode.h>
  42
  43 #include "quakedef.h"
  44
  45 // Tell startup code that we have a client
  46 int cl_available = true;
  47
  48 //GLX prototypes
  49 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  50 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  51 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  52 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  53 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  54 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  55
  56 //GLX_ARB_get_proc_address
  57 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  58
  59 static dllfunction_t getprocaddressfuncs[] =
  60 {
  61         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  62         {NULL, NULL}
  63 };
  64
  65 //GLX_SGI_swap_control
  66 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  67
  68 static dllfunction_t swapcontrolfuncs[] =
  69 {
  70         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  71         {NULL, NULL}
  72 };
  73
  74 static Display *vidx11_display = NULL;
  75 static int vidx11_screen;
  76 static Window win;
  77 static GLXContext ctx = NULL;
  78
  79 Atom wm_delete_window_atom;
  80
  81 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  82 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  83                     PointerMotionMask | ButtonMotionMask)
  84 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  85                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  86                 LeaveWindowMask)
  87
  88
  89 static qboolean mouse_avail = true;
  90 static qboolean vid_usingmouse = false;
  91 static qboolean vid_usingvsync = false;
  92 static qboolean vid_usevsync = false;
  93 static float    mouse_x, mouse_y;
  94 static int p_mouse_x, p_mouse_y;
  95
  96 #if !defined(__APPLE__) && !defined(SUNOS)
  97 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  98 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
  99 #endif
 100
 101 qboolean vidmode_ext = false;
 102
 103 static int win_x, win_y;
 104
 105 static XF86VidModeModeInfo **vidmodes;
 106 static int num_vidmodes;
 107 static qboolean vid_isfullscreen = false;
 108
 109 static Visual *vidx11_visual;
 110 static Colormap vidx11_colormap;
 111
 112 /*-----------------------------------------------------------------------*/
 113
 114 static int XLateKey(XKeyEvent *ev, char *ascii)
 115 {
 116         int key = 0;
 117         char buf[64];
 118         KeySym keysym, shifted;
 119
 120         keysym = XLookupKeysym (ev, 0);
 121         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 122         *ascii = buf[0];
 123
 124         switch(keysym)
 125         {
 126                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 127                 case XK_Page_Up:         key = K_PGUP; break;
 128
 129                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 130                 case XK_Page_Down:       key = K_PGDN; break;
 131
 132                 case XK_KP_Home: key = K_KP_HOME; break;
 133                 case XK_Home:    key = K_HOME; break;
 134
 135                 case XK_KP_End:  key = K_KP_END; break;
 136                 case XK_End:     key = K_END; break;
 137
 138                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 139                 case XK_Left:    key = K_LEFTARROW; break;
 140
 141                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 142                 case XK_Right:  key = K_RIGHTARROW;             break;
 143
 144                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 145                 case XK_Down:    key = K_DOWNARROW; break;
 146
 147                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 148                 case XK_Up:              key = K_UPARROW;        break;
 149
 150                 case XK_Escape: key = K_ESCAPE;         break;
 151
 152                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 153                 case XK_Return: key = K_ENTER;           break;
 154
 155                 case XK_Tab:            key = K_TAB;                     break;
 156
 157                 case XK_F1:              key = K_F1;                            break;
 158
 159                 case XK_F2:              key = K_F2;                            break;
 160
 161                 case XK_F3:              key = K_F3;                            break;
 162
 163                 case XK_F4:              key = K_F4;                            break;
 164
 165                 case XK_F5:              key = K_F5;                            break;
 166
 167                 case XK_F6:              key = K_F6;                            break;
 168
 169                 case XK_F7:              key = K_F7;                            break;
 170
 171                 case XK_F8:              key = K_F8;                            break;
 172
 173                 case XK_F9:              key = K_F9;                            break;
 174
 175                 case XK_F10:            key = K_F10;                     break;
 176
 177                 case XK_F11:            key = K_F11;                     break;
 178
 179                 case XK_F12:            key = K_F12;                     break;
 180
 181                 case XK_BackSpace: key = K_BACKSPACE; break;
 182
 183                 case XK_KP_Delete: key = K_KP_DEL; break;
 184                 case XK_Delete: key = K_DEL; break;
 185
 186                 case XK_Pause:  key = K_PAUSE;           break;
 187
 188                 case XK_Shift_L:
 189                 case XK_Shift_R:        key = K_SHIFT;          break;
 190
 191                 case XK_Execute:
 192                 case XK_Control_L:
 193                 case XK_Control_R:      key = K_CTRL;            break;
 194
 195                 case XK_Alt_L:
 196                 case XK_Meta_L:
 197                 case XK_Alt_R:
 198                 case XK_Meta_R: key = K_ALT;                    break;
 199
 200                 case XK_KP_Begin: key = K_KP_5; break;
 201
 202                 case XK_Insert:key = K_INS; break;
 203                 case XK_KP_Insert: key = K_KP_INS; break;
 204
 205                 case XK_KP_Multiply: key = '*'; break;
 206                 case XK_KP_Add:  key = K_KP_PLUS; break;
 207                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 208                 case XK_KP_Divide: key = K_KP_SLASH; break;
 209
 210                 case XK_section:        key = '~'; break;
 211
 212                 default:
 213                         if (keysym < 32 && keysym > 126)
 214                                 break;
 215
 216                         if (keysym >= 'A' && keysym <= 'Z')
 217                                 key = keysym - 'A' + 'a';
 218                         else
 219                                 key = keysym;
 220
 221                         break;
 222         }
 223
 224         return key;
 225 }
 226
 227 static Cursor CreateNullCursor(Display *display, Window root)
 228 {
 229         Pixmap cursormask;
 230         XGCValues xgc;
 231         GC gc;
 232         XColor dummycolour;
 233         Cursor cursor;
 234
 235         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 236         xgc.function = GXclear;
 237         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 238         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 239         dummycolour.pixel = 0;
 240         dummycolour.red = 0;
 241         dummycolour.flags = 04;
 242         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 243         XFreePixmap(display,cursormask);
 244         XFreeGC(display,gc);
 245         return cursor;
 246 }
 247
 248 static void IN_Activate (qboolean grab)
 249 {
 250         if (!vidx11_display)
 251                 return;
 252         if (grab)
 253         {
 254                 if (!vid_usingmouse && mouse_avail && win)
 255                 {
 256                         XWindowAttributes attribs_1;
 257                         XSetWindowAttributes attribs_2;
 258
 259                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 260                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 261                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 262
 263                 // inviso cursor
 264                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 265
 266                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 267
 268 #if !defined(__APPLE__) && !defined(SUNOS)
 269                         if (vid_dga.integer)
 270                         {
 271                                 int MajorVersion, MinorVersion;
 272
 273                                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 274                                 {
 275                                         // unable to query, probably not supported
 276                                         Con_Print( "Failed to detect XF86DGA Mouse\n" );
 277                                         Cvar_SetValueQuick(&vid_dga, 0);
 278                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 279                                 }
 280                                 else
 281                                 {
 282                                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 283                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 284                                 }
 285                         }
 286                         else
 287 #endif
 288                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 289
 290                         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 291
 292                         mouse_x = mouse_y = 0;
 293                         cl_ignoremousemove = true;
 294                         vid_usingmouse = true;
 295                 }
 296         }
 297         else
 298         {
 299                 if (vid_usingmouse)
 300                 {
 301 #if !defined(__APPLE__) && !defined(SUNOS)
 302                         if (vid_dga.integer)
 303                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 304 #endif
 305
 306                         XUngrabPointer(vidx11_display, CurrentTime);
 307                         XUngrabKeyboard(vidx11_display, CurrentTime);
 308
 309                         // inviso cursor
 310                         if (win)
 311                                 XUndefineCursor(vidx11_display, win);
 312
 313                         cl_ignoremousemove = true;
 314                         vid_usingmouse = false;
 315                 }
 316         }
 317 }
 318
 319 static void HandleEvents(void)
 320 {
 321         XEvent event;
 322         int key;
 323         char ascii;
 324         qboolean dowarp = false;
 325
 326         if (!vidx11_display)
 327                 return;
 328
 329         while (XPending(vidx11_display))
 330         {
 331                 XNextEvent(vidx11_display, &event);
 332
 333                 switch (event.type)
 334                 {
 335                 case KeyPress:
 336                         // key pressed
 337                         key = XLateKey (&event.xkey, &ascii);
 338                         Key_Event(key, ascii, true);
 339                         break;
 340
 341                 case KeyRelease:
 342                         // key released
 343                         key = XLateKey (&event.xkey, &ascii);
 344                         Key_Event(key, ascii, false);
 345                         break;
 346
 347                 case MotionNotify:
 348                         // mouse moved
 349                         if (vid_usingmouse)
 350                         {
 351 #if !defined(__APPLE__) && !defined(SUNOS)
 352                                 if (vid_dga.integer == 1)
 353                                 {
 354                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 355                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 356                                 }
 357                                 else
 358 #endif
 359                                 {
 360
 361                                         if (!event.xmotion.send_event)
 362                                         {
 363                                                 mouse_x += event.xmotion.x - p_mouse_x;
 364                                                 mouse_y += event.xmotion.y - p_mouse_y;
 365                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 366                                                         dowarp = true;
 367                                         }
 368                                         p_mouse_x = event.xmotion.x;
 369                                         p_mouse_y = event.xmotion.y;
 370                                 }
 371                         }
 372                         //else
 373                         //      ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 374                         break;
 375
 376                 case ButtonPress:
 377                         // mouse button pressed
 378                         switch(event.xbutton.button)
 379                         {
 380                         case 1:
 381                                 Key_Event(K_MOUSE1, 0, true);
 382                                 break;
 383                         case 2:
 384                                 Key_Event(K_MOUSE3, 0, true);
 385                                 break;
 386                         case 3:
 387                                 Key_Event(K_MOUSE2, 0, true);
 388                                 break;
 389                         case 4:
 390                                 Key_Event(K_MWHEELUP, 0, true);
 391                                 break;
 392                         case 5:
 393                                 Key_Event(K_MWHEELDOWN, 0, true);
 394                                 break;
 395                         case 6:
 396                                 Key_Event(K_MOUSE4, 0, true);
 397                                 break;
 398                         case 7:
 399                                 Key_Event(K_MOUSE5, 0, true);
 400                                 break;
 401                         case 8:
 402                                 Key_Event(K_MOUSE6, 0, true);
 403                                 break;
 404                         case 9:
 405                                 Key_Event(K_MOUSE7, 0, true);
 406                                 break;
 407                         case 10:
 408                                 Key_Event(K_MOUSE8, 0, true);
 409                                 break;
 410                         case 11:
 411                                 Key_Event(K_MOUSE9, 0, true);
 412                                 break;
 413                         case 12:
 414                                 Key_Event(K_MOUSE10, 0, true);
 415                                 break;
 416                         default:
 417                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-12 expected\n", event.xbutton.button);
 418                                 break;
 419                         }
 420                         break;
 421
 422                 case ButtonRelease:
 423                         // mouse button released
 424                         switch(event.xbutton.button)
 425                         {
 426                         case 1:
 427                                 Key_Event(K_MOUSE1, 0, false);
 428                                 break;
 429                         case 2:
 430                                 Key_Event(K_MOUSE3, 0, false);
 431                                 break;
 432                         case 3:
 433                                 Key_Event(K_MOUSE2, 0, false);
 434                                 break;
 435                         case 4:
 436                                 Key_Event(K_MWHEELUP, 0, false);
 437                                 break;
 438                         case 5:
 439                                 Key_Event(K_MWHEELDOWN, 0, false);
 440                                 break;
 441                         case 6:
 442                                 Key_Event(K_MOUSE4, 0, false);
 443                                 break;
 444                         case 7:
 445                                 Key_Event(K_MOUSE5, 0, false);
 446                                 break;
 447                         case 8:
 448                                 Key_Event(K_MOUSE6, 0, false);
 449                                 break;
 450                         case 9:
 451                                 Key_Event(K_MOUSE7, 0, false);
 452                                 break;
 453                         case 10:
 454                                 Key_Event(K_MOUSE8, 0, false);
 455                                 break;
 456                         case 11:
 457                                 Key_Event(K_MOUSE9, 0, false);
 458                                 break;
 459                         case 12:
 460                                 Key_Event(K_MOUSE10, 0, false);
 461                                 break;
 462                         default:
 463                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-12 expected\n", event.xbutton.button);
 464                                 break;
 465                         }
 466                         break;
 467
 468                 case CreateNotify:
 469                         // window created
 470                         win_x = event.xcreatewindow.x;
 471                         win_y = event.xcreatewindow.y;
 472                         break;
 473
 474                 case ConfigureNotify:
 475                         // window changed size/location
 476                         win_x = event.xconfigure.x;
 477                         win_y = event.xconfigure.y;
 478                         break;
 479                 case DestroyNotify:
 480                         // window has been destroyed
 481                         Sys_Quit();
 482                         break;
 483                 case ClientMessage:
 484                         // window manager messages
 485                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 486                                 Sys_Quit();
 487                         break;
 488                 case MapNotify:
 489                         // window restored
 490                         vid_hidden = false;
 491                         vid_activewindow = false;
 492                         VID_RestoreSystemGamma();
 493                         break;
 494                 case UnmapNotify:
 495                         // window iconified/rolledup/whatever
 496                         vid_hidden = true;
 497                         vid_activewindow = false;
 498                         VID_RestoreSystemGamma();
 499                         break;
 500                 case FocusIn:
 501                         // window is now the input focus
 502                         vid_activewindow = true;
 503                         break;
 504                 case FocusOut:
 505                         // window is no longer the input focus
 506                         vid_activewindow = false;
 507                         VID_RestoreSystemGamma();
 508                         break;
 509                 case EnterNotify:
 510                         // mouse entered window
 511                         break;
 512                 case LeaveNotify:
 513                         // mouse left window
 514                         break;
 515                 }
 516         }
 517
 518         if (dowarp)
 519         {
 520                 /* move the mouse to the window center again */
 521                 p_mouse_x = vid.width / 2;
 522                 p_mouse_y = vid.height / 2;
 523                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 524         }
 525 }
 526
 527 static void *prjobj = NULL;
 528
 529 static void GL_CloseLibrary(void)
 530 {
 531         if (prjobj)
 532                 dlclose(prjobj);
 533         prjobj = NULL;
 534         gl_driver[0] = 0;
 535         qglXGetProcAddressARB = NULL;
 536         gl_extensions = "";
 537         gl_platform = "";
 538         gl_platformextensions = "";
 539 }
 540
 541 static int GL_OpenLibrary(const char *name)
 542 {
 543         Con_Printf("Loading OpenGL driver %s\n", name);
 544         GL_CloseLibrary();
 545         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 546         {
 547                 Con_Printf("Unable to open symbol list for %s\n", name);
 548                 return false;
 549         }
 550         strcpy(gl_driver, name);
 551         return true;
 552 }
 553
 554 void *GL_GetProcAddress(const char *name)
 555 {
 556         void *p = NULL;
 557         if (qglXGetProcAddressARB != NULL)
 558                 p = (void *) qglXGetProcAddressARB(name);
 559         if (p == NULL)
 560                 p = (void *) dlsym(prjobj, name);
 561         return p;
 562 }
 563
 564 void VID_Shutdown(void)
 565 {
 566         if (!ctx || !vidx11_display)
 567                 return;
 568
 569         if (vidx11_display)
 570         {
 571                 IN_Activate(false);
 572                 VID_RestoreSystemGamma();
 573
 574                 // FIXME: glXDestroyContext here?
 575                 if (vid_isfullscreen)
 576                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
 577                 if (win)
 578                         XDestroyWindow(vidx11_display, win);
 579                 XCloseDisplay(vidx11_display);
 580         }
 581         vid_hidden = true;
 582         vid_isfullscreen = false;
 583         vidx11_display = NULL;
 584         win = 0;
 585         ctx = NULL;
 586
 587         GL_CloseLibrary();
 588         Key_ClearStates ();
 589 }
 590
 591 void signal_handler(int sig)
 592 {
 593         Con_Printf("Received signal %d, exiting...\n", sig);
 594         VID_RestoreSystemGamma();
 595         Sys_Quit();
 596         exit(0);
 597 }
 598
 599 void InitSig(void)
 600 {
 601         signal(SIGHUP, signal_handler);
 602         signal(SIGINT, signal_handler);
 603         signal(SIGQUIT, signal_handler);
 604         signal(SIGILL, signal_handler);
 605         signal(SIGTRAP, signal_handler);
 606         signal(SIGIOT, signal_handler);
 607         signal(SIGBUS, signal_handler);
 608         signal(SIGFPE, signal_handler);
 609         signal(SIGSEGV, signal_handler);
 610         signal(SIGTERM, signal_handler);
 611 }
 612
 613 void VID_Finish (void)
 614 {
 615         qboolean vid_usemouse;
 616
 617         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 618         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 619         {
 620                 vid_usingvsync = vid_usevsync;
 621                 if (qglXSwapIntervalSGI (vid_usevsync))
 622                         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");
 623         }
 624
 625 // handle the mouse state when windowed if that's changed
 626         vid_usemouse = false;
 627         if (vid_mouse.integer && !key_consoleactive && !cls.demoplayback)
 628                 vid_usemouse = true;
 629         if (!vid_activewindow)
 630                 vid_usemouse = false;
 631         if (vid_isfullscreen)
 632                 vid_usemouse = true;
 633         IN_Activate(vid_usemouse);
 634
 635         if (r_render.integer)
 636         {
 637                 if (r_speeds.integer || gl_finish.integer)
 638                         qglFinish();
 639                 qglXSwapBuffers(vidx11_display, win);
 640         }
 641 }
 642
 643 int VID_SetGamma(unsigned short *ramps)
 644 {
 645         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 646 }
 647
 648 int VID_GetGamma(unsigned short *ramps)
 649 {
 650         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 651 }
 652
 653 void VID_Init(void)
 654 {
 655 #if !defined(__APPLE__) && !defined(SUNOS)
 656         Cvar_RegisterVariable (&vid_dga);
 657         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 658 #endif
 659         InitSig(); // trap evil signals
 660 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 661         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 662                 mouse_avail = false;
 663 }
 664
 665 void VID_BuildGLXAttrib(int *attrib, int stencil)
 666 {
 667         *attrib++ = GLX_RGBA;
 668         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
 669         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
 670         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
 671         *attrib++ = GLX_DOUBLEBUFFER;
 672         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
 673         // if stencil is enabled, ask for alpha too
 674         if (stencil)
 675         {
 676                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 677                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
 678         }
 679         *attrib++ = None;
 680 }
 681
 682 int VID_InitMode(int fullscreen, int width, int height, int bpp)
 683 {
 684         int i;
 685         int attrib[32];
 686         XSetWindowAttributes attr;
 687         unsigned long mask;
 688         Window root;
 689         XVisualInfo *visinfo;
 690         int MajorVersion, MinorVersion;
 691         const char *drivername;
 692
 693 #if defined(__APPLE__) && defined(__MACH__)
 694         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 695 #else
 696         drivername = "libGL.so.1";
 697 #endif
 698 // 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
 699 // 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
 700 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 701         i = COM_CheckParm("-gl_driver");
 702         if (i && i < com_argc - 1)
 703                 drivername = com_argv[i + 1];
 704         if (!GL_OpenLibrary(drivername))
 705         {
 706                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 707                 return false;
 708         }
 709
 710         if (!(vidx11_display = XOpenDisplay(NULL)))
 711         {
 712                 Con_Print("Couldn't open the X display\n");
 713                 return false;
 714         }
 715
 716         vidx11_screen = DefaultScreen(vidx11_display);
 717         root = RootWindow(vidx11_display, vidx11_screen);
 718
 719         // Get video mode list
 720         MajorVersion = MinorVersion = 0;
 721         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 722                 vidmode_ext = false;
 723         else
 724         {
 725                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 726                 vidmode_ext = true;
 727         }
 728
 729         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 730          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 731          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 732          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 733          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 734         {
 735                 Con_Printf("glX functions not found in %s\n", gl_driver);
 736                 return false;
 737         }
 738
 739         VID_BuildGLXAttrib(attrib, bpp == 32);
 740         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 741         if (!visinfo)
 742         {
 743                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 744                 return false;
 745         }
 746
 747         if (vidmode_ext)
 748         {
 749                 int best_fit, best_dist, dist, x, y;
 750
 751                 // Are we going fullscreen?  If so, let's change video mode
 752                 if (fullscreen)
 753                 {
 754                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 755                         best_dist = 9999999;
 756                         best_fit = -1;
 757
 758                         for (i = 0; i < num_vidmodes; i++)
 759                         {
 760                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 761                                         continue;
 762
 763                                 x = width - vidmodes[i]->hdisplay;
 764                                 y = height - vidmodes[i]->vdisplay;
 765                                 dist = (x * x) + (y * y);
 766                                 if (dist < best_dist)
 767                                 {
 768                                         best_dist = dist;
 769                                         best_fit = i;
 770                                 }
 771                         }
 772
 773                         if (best_fit != -1)
 774                         {
 775                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 776                                 // to width/height =, so the window will take the full area of
 777                                 // the mode chosen
 778                                 width = vidmodes[best_fit]->hdisplay;
 779                                 height = vidmodes[best_fit]->vdisplay;
 780
 781                                 // change to the mode
 782                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 783                                 vid_isfullscreen = true;
 784
 785                                 // Move the viewport to top left
 786                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 787                         }
 788                         else
 789                                 fullscreen = 0;
 790                 }
 791         }
 792
 793         // LordHavoc: save the visual for use in gamma ramp settings later
 794         vidx11_visual = visinfo->visual;
 795
 796         /* window attributes */
 797         attr.background_pixel = 0;
 798         attr.border_pixel = 0;
 799         // LordHavoc: save the colormap for later, too
 800         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 801         attr.event_mask = X_MASK;
 802         if (vid_isfullscreen)
 803         {
 804                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 805                 attr.override_redirect = True;
 806                 attr.backing_store = NotUseful;
 807                 attr.save_under = False;
 808         }
 809         else
 810                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 811
 812         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 813         XStoreName(vidx11_display, win, gamename);
 814         XMapWindow(vidx11_display, win);
 815
 816         // LordHavoc: making the close button on a window do the right thing
 817         // seems to involve this mess, sigh...
 818         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 819         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 820
 821         if (vid_isfullscreen)
 822         {
 823                 XMoveWindow(vidx11_display, win, 0, 0);
 824                 XRaiseWindow(vidx11_display, win);
 825                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 826                 XFlush(vidx11_display);
 827                 // Move the viewport to top left
 828                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 829         }
 830
 831         //XSync(vidx11_display, False);
 832
 833         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 834         if (!ctx)
 835         {
 836                 Con_Printf ("glXCreateContext failed\n");
 837                 return false;
 838         }
 839
 840         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 841         {
 842                 Con_Printf ("glXMakeCurrent failed\n");
 843                 return false;
 844         }
 845
 846         XSync(vidx11_display, False);
 847
 848         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 849         {
 850                 Con_Printf ("glGetString not found in %s", gl_driver);
 851                 return false;
 852         }
 853
 854         gl_renderer = qglGetString(GL_RENDERER);
 855         gl_vendor = qglGetString(GL_VENDOR);
 856         gl_version = qglGetString(GL_VERSION);
 857         gl_extensions = qglGetString(GL_EXTENSIONS);
 858         gl_platform = "GLX";
 859         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 860
 861         gl_videosyncavailable = false;
 862
 863 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 864 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 865 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 866         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 867 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 868 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 869 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 870         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 871
 872         vid_usingmouse = false;
 873         vid_usingvsync = false;
 874         vid_hidden = false;
 875         vid_activewindow = true;
 876         GL_Init();
 877         return true;
 878 }
 879
 880 void Sys_SendKeyEvents(void)
 881 {
 882         HandleEvents();
 883 }
 884
 885 void IN_Move (void)
 886 {
 887         if (mouse_avail)
 888         {
 889                 in_mouse_x = mouse_x;
 890                 in_mouse_y = mouse_y;
 891         }
 892         mouse_x = 0;
 893         mouse_y = 0;
 894 }