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 #include <X11/extensions/xf86dga.h>
  39 #include <X11/extensions/xf86vmode.h>
  40
  41 #include "quakedef.h"
  42
  43 int cl_available = true;
  44
  45 //GLX prototypes
  46 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  47 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  48 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  49 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  50 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  51 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  52
  53 //GLX_ARB_get_proc_address
  54 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  55
  56 static dllfunction_t getprocaddressfuncs[] =
  57 {
  58         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  59         {NULL, NULL}
  60 };
  61
  62 //GLX_SGI_video_sync
  63 GLint (GLAPIENTRY *qglXGetVideoSyncSGI)(GLuint *count);
  64 GLint (GLAPIENTRY *qglXWaitVideoSyncSGI)(GLint divisor, GLint remainder, GLuint *count);
  65
  66 static dllfunction_t videosyncfuncs[] =
  67 {
  68         {"glXGetVideoSyncSGI", (void **) &qglXGetVideoSyncSGI},
  69         {"glXWaitVideoSyncSGI", (void **) &qglXWaitVideoSyncSGI},
  70         {NULL, NULL}
  71 };
  72
  73 static Display *vidx11_display = NULL;
  74 static int vidx11_screen;
  75 static Window win;
  76 static GLXContext ctx = NULL;
  77
  78 Atom wm_delete_window_atom;
  79
  80 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  81 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  82                     PointerMotionMask | ButtonMotionMask )
  83 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | StructureNotifyMask )
  84
  85
  86 static qboolean         mouse_avail = true;
  87 static qboolean         mouse_active = false, usingmouse = false;
  88 static float    mouse_x, mouse_y;
  89 static int p_mouse_x, p_mouse_y;
  90
  91 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  92 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
  93
  94 qboolean vidmode_ext = false;
  95
  96 static int win_x, win_y;
  97
  98 static int scr_width, scr_height;
  99
 100 static XF86VidModeModeInfo **vidmodes;
 101 static int num_vidmodes;
 102 static qboolean vidmode_active = false;
 103
 104 static Visual *vidx11_visual;
 105 static Colormap vidx11_colormap;
 106
 107 /*-----------------------------------------------------------------------*/
 108
 109 static int XLateKey(XKeyEvent *ev)
 110 {
 111         int key = 0;
 112         char buf[64];
 113         KeySym keysym;
 114
 115         XLookupString(ev, buf, sizeof buf, &keysym, 0);
 116
 117         switch(keysym)
 118         {
 119                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 120                 case XK_Page_Up:         key = K_PGUP; break;
 121
 122                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 123                 case XK_Page_Down:       key = K_PGDN; break;
 124
 125                 case XK_KP_Home: key = K_KP_HOME; break;
 126                 case XK_Home:    key = K_HOME; break;
 127
 128                 case XK_KP_End:  key = K_KP_END; break;
 129                 case XK_End:     key = K_END; break;
 130
 131                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 132                 case XK_Left:    key = K_LEFTARROW; break;
 133
 134                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 135                 case XK_Right:  key = K_RIGHTARROW;             break;
 136
 137                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 138                 case XK_Down:    key = K_DOWNARROW; break;
 139
 140                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 141                 case XK_Up:              key = K_UPARROW;        break;
 142
 143                 case XK_Escape: key = K_ESCAPE;         break;
 144
 145                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 146                 case XK_Return: key = K_ENTER;           break;
 147
 148                 case XK_Tab:            key = K_TAB;                     break;
 149
 150                 case XK_F1:              key = K_F1;                            break;
 151
 152                 case XK_F2:              key = K_F2;                            break;
 153
 154                 case XK_F3:              key = K_F3;                            break;
 155
 156                 case XK_F4:              key = K_F4;                            break;
 157
 158                 case XK_F5:              key = K_F5;                            break;
 159
 160                 case XK_F6:              key = K_F6;                            break;
 161
 162                 case XK_F7:              key = K_F7;                            break;
 163
 164                 case XK_F8:              key = K_F8;                            break;
 165
 166                 case XK_F9:              key = K_F9;                            break;
 167
 168                 case XK_F10:            key = K_F10;                     break;
 169
 170                 case XK_F11:            key = K_F11;                     break;
 171
 172                 case XK_F12:            key = K_F12;                     break;
 173
 174                 case XK_BackSpace: key = K_BACKSPACE; break;
 175
 176                 case XK_KP_Delete: key = K_KP_DEL; break;
 177                 case XK_Delete: key = K_DEL; break;
 178
 179                 case XK_Pause:  key = K_PAUSE;           break;
 180
 181                 case XK_Shift_L:
 182                 case XK_Shift_R:        key = K_SHIFT;          break;
 183
 184                 case XK_Execute:
 185                 case XK_Control_L:
 186                 case XK_Control_R:      key = K_CTRL;            break;
 187
 188                 case XK_Alt_L:
 189                 case XK_Meta_L:
 190                 case XK_Alt_R:
 191                 case XK_Meta_R: key = K_ALT;                    break;
 192
 193                 case XK_KP_Begin: key = K_KP_5; break;
 194
 195                 case XK_Insert:key = K_INS; break;
 196                 case XK_KP_Insert: key = K_KP_INS; break;
 197
 198                 case XK_KP_Multiply: key = '*'; break;
 199                 case XK_KP_Add:  key = K_KP_PLUS; break;
 200                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 201                 case XK_KP_Divide: key = K_KP_SLASH; break;
 202
 203 #if 0
 204                 case 0x021: key = '1';break;/* [!] */
 205                 case 0x040: key = '2';break;/* [@] */
 206                 case 0x023: key = '3';break;/* [#] */
 207                 case 0x024: key = '4';break;/* [$] */
 208                 case 0x025: key = '5';break;/* [%] */
 209                 case 0x05e: key = '6';break;/* [^] */
 210                 case 0x026: key = '7';break;/* [&] */
 211                 case 0x02a: key = '8';break;/* [*] */
 212                 case 0x028: key = '9';;break;/* [(] */
 213                 case 0x029: key = '0';break;/* [)] */
 214                 case 0x05f: key = '-';break;/* [_] */
 215                 case 0x02b: key = '=';break;/* [+] */
 216                 case 0x07c: key = '\'';break;/* [|] */
 217                 case 0x07d: key = '[';break;/* [}] */
 218                 case 0x07b: key = ']';break;/* [{] */
 219                 case 0x022: key = '\'';break;/* ["] */
 220                 case 0x03a: key = ';';break;/* [:] */
 221                 case 0x03f: key = '/';break;/* [?] */
 222                 case 0x03e: key = '.';break;/* [>] */
 223                 case 0x03c: key = ',';break;/* [<] */
 224 #endif
 225
 226                 default:
 227                         key = *(unsigned char*)buf;
 228                         if (key >= 'A' && key <= 'Z')
 229                                 key = key - 'A' + 'a';
 230                         break;
 231         }
 232
 233         return key;
 234 }
 235
 236 static Cursor CreateNullCursor(Display *display, Window root)
 237 {
 238         Pixmap cursormask;
 239         XGCValues xgc;
 240         GC gc;
 241         XColor dummycolour;
 242         Cursor cursor;
 243
 244         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 245         xgc.function = GXclear;
 246         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 247         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 248         dummycolour.pixel = 0;
 249         dummycolour.red = 0;
 250         dummycolour.flags = 04;
 251         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 252         XFreePixmap(display,cursormask);
 253         XFreeGC(display,gc);
 254         return cursor;
 255 }
 256
 257 static void install_grabs(void)
 258 {
 259         XWindowAttributes attribs_1;
 260         XSetWindowAttributes attribs_2;
 261
 262         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 263         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 264         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 265
 266 // inviso cursor
 267         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 268
 269         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 270
 271         if (vid_dga.integer)
 272         {
 273                 int MajorVersion, MinorVersion;
 274
 275                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 276                 {
 277                         // unable to query, probalby not supported
 278                         Con_Printf( "Failed to detect XF86DGA Mouse\n" );
 279                         vid_dga.integer = 0;
 280                 }
 281                 else
 282                 {
 283                         vid_dga.integer = 1;
 284                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 285                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 286                 }
 287         }
 288         else
 289                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 290
 291         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 292
 293         mouse_active = true;
 294         mouse_x = mouse_y = 0;
 295 }
 296
 297 static void uninstall_grabs(void)
 298 {
 299         if (!vidx11_display || !win)
 300                 return;
 301
 302         if (vid_dga.integer == 1)
 303                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 304
 305         XUngrabPointer(vidx11_display, CurrentTime);
 306         XUngrabKeyboard(vidx11_display, CurrentTime);
 307
 308 // inviso cursor
 309         XUndefineCursor(vidx11_display, win);
 310
 311         mouse_active = false;
 312 }
 313
 314 static void HandleEvents(void)
 315 {
 316         XEvent event;
 317         qboolean dowarp = false;
 318
 319         if (!vidx11_display)
 320                 return;
 321
 322         while (XPending(vidx11_display))
 323         {
 324                 XNextEvent(vidx11_display, &event);
 325
 326                 switch (event.type)
 327                 {
 328                 case KeyPress:
 329                         // key pressed
 330                         Key_Event(XLateKey(&event.xkey), true);
 331                         break;
 332
 333                 case KeyRelease:
 334                         // key released
 335                         Key_Event(XLateKey(&event.xkey), false);
 336                         break;
 337
 338                 case MotionNotify:
 339                         // mouse moved
 340                         if (usingmouse)
 341                         {
 342                                 if (vid_dga.integer == 1)
 343                                 {
 344                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 345                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 346                                 }
 347                                 else
 348                                 {
 349
 350                                         if (!event.xmotion.send_event)
 351                                         {
 352                                                 mouse_x += event.xmotion.x - p_mouse_x;
 353                                                 mouse_y += event.xmotion.y - p_mouse_y;
 354                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 355                                                         dowarp = true;
 356                                         }
 357                                         p_mouse_x = event.xmotion.x;
 358                                         p_mouse_y = event.xmotion.y;
 359                                 }
 360                         }
 361                         else
 362                                 ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 363                         break;
 364
 365                 case ButtonPress:
 366                         // mouse button pressed
 367                         switch(event.xbutton.button)
 368                         {
 369                         case 1:
 370                                 Key_Event(K_MOUSE1, true);
 371                                 break;
 372                         case 2:
 373                                 Key_Event(K_MOUSE3, true);
 374                                 break;
 375                         case 3:
 376                                 Key_Event(K_MOUSE2, true);
 377                                 break;
 378                         case 4:
 379                                 Key_Event(K_MWHEELUP, true);
 380                                 break;
 381                         case 5:
 382                                 Key_Event(K_MWHEELDOWN, true);
 383                                 break;
 384                         default:
 385                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-5 expected\n", event.xbutton.button);
 386                                 break;
 387                         }
 388                         break;
 389
 390                 case ButtonRelease:
 391                         // mouse button released
 392                         switch(event.xbutton.button)
 393                         {
 394                         case 1:
 395                                 Key_Event(K_MOUSE1, false);
 396                                 break;
 397                         case 2:
 398                                 Key_Event(K_MOUSE3, false);
 399                                 break;
 400                         case 3:
 401                                 Key_Event(K_MOUSE2, false);
 402                                 break;
 403                         case 4:
 404                                 Key_Event(K_MWHEELUP, false);
 405                                 break;
 406                         case 5:
 407                                 Key_Event(K_MWHEELDOWN, false);
 408                                 break;
 409                         default:
 410                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-5 expected\n", event.xbutton.button);
 411                                 break;
 412                         }
 413                         break;
 414
 415                 case CreateNotify:
 416                         // window created
 417                         win_x = event.xcreatewindow.x;
 418                         win_y = event.xcreatewindow.y;
 419                         break;
 420
 421                 case ConfigureNotify:
 422                         // window changed size/location
 423                         win_x = event.xconfigure.x;
 424                         win_y = event.xconfigure.y;
 425                         break;
 426                 case DestroyNotify:
 427                         // window has been destroyed
 428                         Sys_Quit();
 429                         break;
 430                 case ClientMessage:
 431                         // window manager messages
 432                         if ((event.xclient.format == 32) && (event.xclient.data.l[0] == wm_delete_window_atom))
 433                                 Sys_Quit();
 434                         break;
 435                 case MapNotify:
 436                         // window restored
 437                         vid_hidden = false;
 438                         vid_allowhwgamma = true;
 439                         break;
 440                 case UnmapNotify:
 441                         // window iconified/rolledup/whatever
 442                         vid_hidden = true;
 443                         vid_allowhwgamma = false;
 444                         VID_RestoreSystemGamma();
 445                         break;
 446                 case FocusIn:
 447                         // window is now the input focus
 448                         vid_allowhwgamma = true;
 449                         break;
 450                 case FocusOut:
 451                         // window is no longer the input focus
 452                         vid_allowhwgamma = false;
 453                         VID_RestoreSystemGamma();
 454                         break;
 455                 case EnterNotify:
 456                         // mouse entered window
 457                         vid_allowhwgamma = true;
 458                         break;
 459                 case LeaveNotify:
 460                         // mouse left window
 461                         vid_allowhwgamma = false;
 462                         VID_RestoreSystemGamma();
 463                         break;
 464                 }
 465         }
 466
 467         if (dowarp)
 468         {
 469                 /* move the mouse to the window center again */
 470                 p_mouse_x = scr_width / 2;
 471                 p_mouse_y = scr_height / 2;
 472                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 473         }
 474
 475 }
 476
 477 static void IN_DeactivateMouse( void )
 478 {
 479         if (!mouse_avail || !vidx11_display || !win)
 480                 return;
 481
 482         if (mouse_active)
 483         {
 484                 uninstall_grabs();
 485                 mouse_active = false;
 486         }
 487 }
 488
 489 static void IN_ActivateMouse( void )
 490 {
 491         if (!mouse_avail || !vidx11_display || !win)
 492                 return;
 493
 494         if (!mouse_active)
 495         {
 496                 mouse_x = mouse_y = 0; // don't spazz
 497                 install_grabs();
 498                 mouse_active = true;
 499         }
 500 }
 501
 502 void VID_Shutdown(void)
 503 {
 504         if (!ctx || !vidx11_display)
 505                 return;
 506
 507         vid_hidden = true;
 508         usingmouse = false;
 509         if (vidx11_display)
 510         {
 511                 VID_RestoreSystemGamma();
 512                 uninstall_grabs();
 513
 514                 // FIXME: glXDestroyContext here?
 515                 if (vidmode_active)
 516                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
 517                 if (win)
 518                         XDestroyWindow(vidx11_display, win);
 519                 XCloseDisplay(vidx11_display);
 520         }
 521         vidmode_active = false;
 522         vidx11_display = NULL;
 523         win = 0;
 524         ctx = NULL;
 525
 526         GL_CloseLibrary();
 527 }
 528
 529 void signal_handler(int sig)
 530 {
 531         printf("Received signal %d, exiting...\n", sig);
 532         VID_RestoreSystemGamma();
 533         Sys_Quit();
 534         exit(0);
 535 }
 536
 537 void InitSig(void)
 538 {
 539         signal(SIGHUP, signal_handler);
 540         signal(SIGINT, signal_handler);
 541         signal(SIGQUIT, signal_handler);
 542         signal(SIGILL, signal_handler);
 543         signal(SIGTRAP, signal_handler);
 544         signal(SIGIOT, signal_handler);
 545         signal(SIGBUS, signal_handler);
 546         signal(SIGFPE, signal_handler);
 547         signal(SIGSEGV, signal_handler);
 548         signal(SIGTERM, signal_handler);
 549 }
 550
 551 /*
 552 =================
 553 VID_GetWindowSize
 554 =================
 555 */
 556 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 557 {
 558         *x = *y = 0;
 559         *width = scr_width;
 560         *height = scr_height;
 561 }
 562
 563 void VID_Finish (void)
 564 {
 565         int usemouse;
 566         if (r_render.integer)
 567         {
 568                 qglFinish();
 569                 qglXSwapBuffers(vidx11_display, win);
 570         }
 571
 572 // handle the mouse state when windowed if that's changed
 573         usemouse = false;
 574         if (vid_mouse.integer && !key_consoleactive)
 575                 usemouse = true;
 576         if (vidmode_active)
 577                 usemouse = true;
 578         if (usemouse)
 579         {
 580                 if (!usingmouse)
 581                 {
 582                         usingmouse = true;
 583                         IN_ActivateMouse ();
 584                 }
 585         }
 586         else
 587         {
 588                 if (usingmouse)
 589                 {
 590                         usingmouse = false;
 591                         IN_DeactivateMouse ();
 592                 }
 593         }
 594 }
 595
 596 int VID_SetGamma(unsigned short *ramps)
 597 {
 598         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 599 }
 600
 601 int VID_GetGamma(unsigned short *ramps)
 602 {
 603         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 604 }
 605
 606 void VID_Init(void)
 607 {
 608         Cvar_RegisterVariable (&vid_dga);
 609         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 610         InitSig(); // trap evil signals
 611         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 612                 mouse_avail = false;
 613 }
 614
 615 void VID_BuildGLXAttrib(int *attrib, int stencil)
 616 {
 617         *attrib++ = GLX_RGBA;
 618         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
 619         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
 620         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
 621         *attrib++ = GLX_DOUBLEBUFFER;
 622         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
 623         // if stencil is enabled, ask for alpha too
 624         if (stencil)
 625         {
 626                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 627                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
 628         }
 629         *attrib++ = None;
 630 }
 631
 632 int VID_InitMode(int fullscreen, int width, int height, int bpp, int stencil)
 633 {
 634         int i;
 635         int attrib[32];
 636         XSetWindowAttributes attr;
 637         unsigned long mask;
 638         Window root;
 639         XVisualInfo *visinfo;
 640         int MajorVersion, MinorVersion;
 641         const char *drivername;
 642
 643         drivername = "libGL.so.1";
 644         i = COM_CheckParm("-gl_driver");
 645         if (i && i < com_argc - 1)
 646                 drivername = com_argv[i + 1];
 647         if (!GL_OpenLibrary(drivername))
 648         {
 649                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 650                 return false;
 651         }
 652
 653         if (!(vidx11_display = XOpenDisplay(NULL)))
 654         {
 655                 Con_Printf("Couldn't open the X display\n");
 656                 return false;
 657         }
 658
 659         vidx11_screen = DefaultScreen(vidx11_display);
 660         root = RootWindow(vidx11_display, vidx11_screen);
 661
 662         // Get video mode list
 663         MajorVersion = MinorVersion = 0;
 664         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 665                 vidmode_ext = false;
 666         else
 667         {
 668                 Con_Printf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 669                 vidmode_ext = true;
 670         }
 671
 672         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 673          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 674          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 675          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 676          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 677         {
 678                 Con_Printf("glX functions not found in %s\n", gl_driver);
 679                 return false;
 680         }
 681
 682         VID_BuildGLXAttrib(attrib, stencil);
 683         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 684         if (!visinfo)
 685         {
 686                 Con_Printf("Couldn't get an RGB, Double-buffered, Depth visual\n");
 687                 return false;
 688         }
 689
 690         if (vidmode_ext)
 691         {
 692                 int best_fit, best_dist, dist, x, y;
 693
 694                 // Are we going fullscreen?  If so, let's change video mode
 695                 if (fullscreen)
 696                 {
 697                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 698                         best_dist = 9999999;
 699                         best_fit = -1;
 700
 701                         for (i = 0; i < num_vidmodes; i++)
 702                         {
 703                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 704                                         continue;
 705
 706                                 x = width - vidmodes[i]->hdisplay;
 707                                 y = height - vidmodes[i]->vdisplay;
 708                                 dist = (x * x) + (y * y);
 709                                 if (dist < best_dist)
 710                                 {
 711                                         best_dist = dist;
 712                                         best_fit = i;
 713                                 }
 714                         }
 715
 716                         if (best_fit != -1)
 717                         {
 718                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 719                                 // to width/height =, so the window will take the full area of
 720                                 // the mode chosen
 721                                 width = vidmodes[best_fit]->hdisplay;
 722                                 height = vidmodes[best_fit]->vdisplay;
 723
 724                                 // change to the mode
 725                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 726                                 vidmode_active = true;
 727
 728                                 // Move the viewport to top left
 729                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 730                         }
 731                         else
 732                                 fullscreen = 0;
 733                 }
 734         }
 735
 736         // LordHavoc: save the visual for use in gamma ramp settings later
 737         vidx11_visual = visinfo->visual;
 738
 739         /* window attributes */
 740         attr.background_pixel = 0;
 741         attr.border_pixel = 0;
 742         // LordHavoc: save the colormap for later, too
 743         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 744         attr.event_mask = X_MASK;
 745         if (vidmode_active)
 746         {
 747                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 748                 attr.override_redirect = True;
 749                 attr.backing_store = NotUseful;
 750                 attr.save_under = False;
 751         }
 752         else
 753                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 754
 755         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 756         XStoreName(vidx11_display, win, gamename);
 757         XMapWindow(vidx11_display, win);
 758
 759         // LordHavoc: making the close button on a window do the right thing
 760         // seems to involve this mess, sigh...
 761         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 762         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 763
 764         if (vidmode_active)
 765         {
 766                 XMoveWindow(vidx11_display, win, 0, 0);
 767                 XRaiseWindow(vidx11_display, win);
 768                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 769                 XFlush(vidx11_display);
 770                 // Move the viewport to top left
 771                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 772         }
 773
 774         //XSync(vidx11_display, False);
 775
 776         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 777         if (!ctx)
 778                 Sys_Error ("glXCreateContext failed\n");
 779
 780         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 781                 Sys_Error ("glXMakeCurrent failed\n");
 782
 783         XSync(vidx11_display, False);
 784
 785         scr_width = width;
 786         scr_height = height;
 787
 788         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 789                 Sys_Error("glGetString not found in %s", gl_driver);
 790
 791         gl_renderer = qglGetString(GL_RENDERER);
 792         gl_vendor = qglGetString(GL_VENDOR);
 793         gl_version = qglGetString(GL_VERSION);
 794         gl_extensions = qglGetString(GL_EXTENSIONS);
 795         gl_platform = "GLX";
 796         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 797
 798         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 799         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_video_sync", videosyncfuncs, "-novideosync", false);
 800
 801         usingmouse = false;
 802         vid_hidden = false;
 803         vid_allowhwgamma = true;
 804         GL_Init();
 805         return true;
 806 }
 807
 808 void Sys_SendKeyEvents(void)
 809 {
 810         HandleEvents();
 811 }
 812
 813 /*
 814 ===========
 815 IN_Commands
 816 ===========
 817 */
 818 void IN_Commands (void)
 819 {
 820 }
 821
 822 void IN_Move (usercmd_t *cmd)
 823 {
 824         if (mouse_avail)
 825                 IN_Mouse(cmd, mouse_x, mouse_y);
 826         mouse_x = 0;
 827         mouse_y = 0;
 828 }
 829
 830 static void *prjobj = NULL;
 831
 832 int GL_OpenLibrary(const char *name)
 833 {
 834         Con_Printf("Loading GL driver %s\n", name);
 835         GL_CloseLibrary();
 836         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 837         {
 838                 Con_Printf("Unable to open symbol list for %s\n", name);
 839                 return false;
 840         }
 841         strcpy(gl_driver, name);
 842         return true;
 843 }
 844
 845 void GL_CloseLibrary(void)
 846 {
 847         if (prjobj)
 848                 dlclose(prjobj);
 849         prjobj = NULL;
 850         gl_driver[0] = 0;
 851         qglXGetProcAddressARB = NULL;
 852         gl_extensions = "";
 853         gl_platform = "";
 854         gl_platformextensions = "";
 855 }
 856
 857 void *GL_GetProcAddress(const char *name)
 858 {
 859         void *p = NULL;
 860         if (qglXGetProcAddressARB != NULL)
 861                 p = (void *) qglXGetProcAddressARB(name);
 862         if (p == NULL)
 863                 p = (void *) dlsym(prjobj, name);
 864         return p;
 865 }
 866