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 gl_extensionfunctionlist_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)(int divisor, int remainder, unsigned int *count);
  65
  66 static gl_extensionfunctionlist_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 scrnum;
  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 viddef_t        vid;                            // global video state
  87
  88 static qboolean         mouse_avail = true;
  89 static qboolean         mouse_active = false, usingmouse = false;
  90 static float    mouse_x, mouse_y;
  91 static int p_mouse_x, p_mouse_y;
  92
  93 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  94 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
  95
  96 qboolean vidmode_ext = false;
  97
  98 static int win_x, win_y;
  99
 100 static int scr_width, scr_height;
 101
 102 static XF86VidModeModeInfo **vidmodes;
 103 static int num_vidmodes;
 104 static qboolean vidmode_active = false;
 105
 106 static Visual *vidx11_visual;
 107 static Colormap vidx11_colormap;
 108
 109 /*-----------------------------------------------------------------------*/
 110
 111 static int
 112 XLateKey(XKeyEvent *ev)
 113 {
 114         int key = 0;
 115         KeySym keysym;
 116
 117         keysym = XLookupKeysym(ev, 0);
 118
 119         switch(keysym)
 120         {
 121                 case XK_KP_Page_Up:     key = KP_PGUP; break;
 122                 case XK_Page_Up:        key = K_PGUP; break;
 123
 124                 case XK_KP_Page_Down:   key = KP_PGDN; break;
 125                 case XK_Page_Down:      key = K_PGDN; break;
 126
 127                 case XK_KP_Home:        key = KP_HOME; break;
 128                 case XK_Home:           key = K_HOME; break;
 129
 130                 case XK_KP_End:         key = KP_END; break;
 131                 case XK_End:            key = K_END; break;
 132
 133                 case XK_KP_Left:        key = KP_LEFTARROW; break;
 134                 case XK_Left:           key = K_LEFTARROW; break;
 135
 136                 case XK_KP_Right:       key = KP_RIGHTARROW; break;
 137                 case XK_Right:          key = K_RIGHTARROW; break;
 138
 139                 case XK_KP_Down:        key = KP_DOWNARROW; break;
 140                 case XK_Down:           key = K_DOWNARROW; break;
 141
 142                 case XK_KP_Up:          key = KP_UPARROW; break;
 143                 case XK_Up:                     key = K_UPARROW; break;
 144
 145                 case XK_Escape:         key = K_ESCAPE; break;
 146
 147                 case XK_KP_Enter:       key = KP_ENTER; break;
 148                 case XK_Return:         key = K_ENTER; break;
 149
 150                 case XK_Tab:            key = K_TAB; break;
 151
 152                 case XK_F1:                     key = K_F1; break;
 153                 case XK_F2:                     key = K_F2; break;
 154                 case XK_F3:                     key = K_F3; break;
 155                 case XK_F4:                     key = K_F4; break;
 156                 case XK_F5:                     key = K_F5; break;
 157                 case XK_F6:                     key = K_F6; break;
 158                 case XK_F7:                     key = K_F7; break;
 159                 case XK_F8:                     key = K_F8; break;
 160                 case XK_F9:                     key = K_F9; break;
 161                 case XK_F10:            key = K_F10; break;
 162                 case XK_F11:            key = K_F11; break;
 163                 case XK_F12:            key = K_F12; break;
 164
 165                 case XK_BackSpace:      key = K_BACKSPACE; break;
 166
 167                 case XK_KP_Delete:      key = KP_DEL; break;
 168                 case XK_Delete:         key = K_DEL; break;
 169
 170                 case XK_Pause:          key = K_PAUSE; break;
 171
 172                 case XK_Shift_L:
 173                 case XK_Shift_R:        key = K_SHIFT; break;
 174
 175                 case XK_Execute:
 176                 case XK_Control_L:
 177                 case XK_Control_R:      key = K_CTRL; break;
 178
 179                 case XK_Mode_switch:
 180                 case XK_Alt_L:
 181                 case XK_Meta_L:
 182                 case XK_Alt_R:
 183                 case XK_Meta_R:         key = K_ALT; break;
 184
 185                 case XK_Caps_Lock:      key = K_CAPSLOCK; break;
 186                 case XK_KP_Begin:       key = KP_5; break;
 187
 188                 case XK_Insert:         key = K_INS; break;
 189                 case XK_KP_Insert:      key = KP_INS; break;
 190
 191                 case XK_KP_Multiply:    key = KP_MULTIPLY; break;
 192                 case XK_KP_Add:         key = KP_PLUS; break;
 193                 case XK_KP_Subtract:    key = KP_MINUS; break;
 194                 case XK_KP_Divide:      key = KP_DIVIDE; break;
 195
 196                 /* For Sun keyboards */
 197                 case XK_F27:            key = K_HOME; break;
 198                 case XK_F29:            key = K_PGUP; break;
 199                 case XK_F33:            key = K_END; break;
 200                 case XK_F35:            key = K_PGDN; break;
 201
 202                 default:
 203                         if (keysym < 128)
 204                         {
 205                                 /* ASCII keys */
 206                                 key = keysym;
 207                                 if ((key >= 'A') && (key <= 'Z'))
 208                                         key = key + ('a' - 'A');
 209                         }
 210                         break;
 211         }
 212
 213         return key;
 214 }
 215
 216 static Cursor CreateNullCursor(Display *display, Window root)
 217 {
 218         Pixmap cursormask;
 219         XGCValues xgc;
 220         GC gc;
 221         XColor dummycolour;
 222         Cursor cursor;
 223
 224         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 225         xgc.function = GXclear;
 226         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 227         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 228         dummycolour.pixel = 0;
 229         dummycolour.red = 0;
 230         dummycolour.flags = 04;
 231         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 232         XFreePixmap(display,cursormask);
 233         XFreeGC(display,gc);
 234         return cursor;
 235 }
 236
 237 static void install_grabs(void)
 238 {
 239         XWindowAttributes attribs_1;
 240         XSetWindowAttributes attribs_2;
 241
 242         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 243         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 244         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 245
 246 // inviso cursor
 247         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 248
 249         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 250
 251         if (vid_dga.integer)
 252         {
 253                 int MajorVersion, MinorVersion;
 254
 255                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 256                 {
 257                         // unable to query, probalby not supported
 258                         Con_Printf( "Failed to detect XF86DGA Mouse\n" );
 259                         vid_dga.integer = 0;
 260                 }
 261                 else
 262                 {
 263                         vid_dga.integer = 1;
 264                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 265                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 266                 }
 267         }
 268         else
 269                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 270
 271         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 272
 273         mouse_active = true;
 274         mouse_x = mouse_y = 0;
 275 }
 276
 277 static void uninstall_grabs(void)
 278 {
 279         if (!vidx11_display || !win)
 280                 return;
 281
 282         if (vid_dga.integer == 1)
 283                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 284
 285         XUngrabPointer(vidx11_display, CurrentTime);
 286         XUngrabKeyboard(vidx11_display, CurrentTime);
 287
 288 // inviso cursor
 289         XUndefineCursor(vidx11_display, win);
 290
 291         mouse_active = false;
 292 }
 293
 294 static void HandleEvents(void)
 295 {
 296         XEvent event;
 297         qboolean dowarp = false;
 298
 299         if (!vidx11_display)
 300                 return;
 301
 302         while (XPending(vidx11_display))
 303         {
 304                 XNextEvent(vidx11_display, &event);
 305
 306                 switch (event.type)
 307                 {
 308                 case KeyPress:
 309                         // key pressed
 310                         Key_Event(XLateKey(&event.xkey), true);
 311                         break;
 312
 313                 case KeyRelease:
 314                         // key released
 315                         Key_Event(XLateKey(&event.xkey), false);
 316                         break;
 317
 318                 case MotionNotify:
 319                         // mouse moved
 320                         if (usingmouse)
 321                         {
 322                                 if (vid_dga.integer == 1)
 323                                 {
 324                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 325                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 326                                 }
 327                                 else
 328                                 {
 329
 330                                         if (!event.xmotion.send_event)
 331                                         {
 332                                                 mouse_x += event.xmotion.x - p_mouse_x;
 333                                                 mouse_y += event.xmotion.y - p_mouse_y;
 334                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 335                                                         dowarp = true;
 336                                         }
 337                                         p_mouse_x = event.xmotion.x;
 338                                         p_mouse_y = event.xmotion.y;
 339                                 }
 340                         }
 341                         else
 342                                 ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 343                         break;
 344
 345                 case ButtonPress:
 346                         // mouse button pressed
 347                         switch(event.xbutton.button)
 348                         {
 349                         case 1:
 350                                 Key_Event(K_MOUSE1, true);
 351                                 break;
 352                         case 2:
 353                                 Key_Event(K_MOUSE3, true);
 354                                 break;
 355                         case 3:
 356                                 Key_Event(K_MOUSE2, true);
 357                                 break;
 358                         case 4:
 359                                 Key_Event(K_MWHEELUP, true);
 360                                 break;
 361                         case 5:
 362                                 Key_Event(K_MWHEELDOWN, true);
 363                                 break;
 364                 default:
 365                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-5 expected\n", event.xbutton.button);
 366                                 break;
 367                         }
 368                         break;
 369
 370                 case ButtonRelease:
 371                         // mouse button released
 372                         switch(event.xbutton.button)
 373                         {
 374                         case 1:
 375                                 Key_Event(K_MOUSE1, false);
 376                                 break;
 377                         case 2:
 378                                 Key_Event(K_MOUSE3, false);
 379                                 break;
 380                         case 3:
 381                                 Key_Event(K_MOUSE2, false);
 382                                 break;
 383                         case 4:
 384                                 Key_Event(K_MWHEELUP, false);
 385                                 break;
 386                         case 5:
 387                                 Key_Event(K_MWHEELDOWN, false);
 388                                 break;
 389                 default:
 390                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-5 expected\n", event.xbutton.button);
 391                                 break;
 392                         }
 393                         break;
 394
 395                 case CreateNotify:
 396                         // window created
 397                         win_x = event.xcreatewindow.x;
 398                         win_y = event.xcreatewindow.y;
 399                         break;
 400
 401                 case ConfigureNotify:
 402                         // window changed size/location
 403                         win_x = event.xconfigure.x;
 404                         win_y = event.xconfigure.y;
 405                         break;
 406                 case DestroyNotify:
 407                         // window has been destroyed
 408                         Sys_Quit();
 409                         break;
 410                 case ClientMessage:
 411                         // window manager messages
 412                         if ((event.xclient.format == 32) && (event.xclient.data.l[0] == wm_delete_window_atom))
 413                                 Sys_Quit();
 414                         break;
 415                 case MapNotify:
 416                         // window restored
 417                         vid_hidden = false;
 418                         break;
 419                 case UnmapNotify:
 420                         // window iconified/rolledup/whatever
 421                         vid_hidden = true;
 422                         break;
 423                 case FocusIn:
 424                         // window is now the input focus
 425                         break;
 426                 case FocusOut:
 427                         // window is no longer the input focus
 428                         break;
 429                 case EnterNotify:
 430                         // mouse entered window
 431                         break;
 432                 case LeaveNotify:
 433                         // mouse left window
 434                         break;
 435                 }
 436         }
 437
 438         if (dowarp)
 439         {
 440                 /* move the mouse to the window center again */
 441                 p_mouse_x = scr_width / 2;
 442                 p_mouse_y = scr_height / 2;
 443                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 444         }
 445
 446 }
 447
 448 static void IN_DeactivateMouse( void )
 449 {
 450         if (!mouse_avail || !vidx11_display || !win)
 451                 return;
 452
 453         if (mouse_active)
 454         {
 455                 uninstall_grabs();
 456                 mouse_active = false;
 457         }
 458 }
 459
 460 static void IN_ActivateMouse( void )
 461 {
 462         if (!mouse_avail || !vidx11_display || !win)
 463                 return;
 464
 465         if (!mouse_active)
 466         {
 467                 mouse_x = mouse_y = 0; // don't spazz
 468                 install_grabs();
 469                 mouse_active = true;
 470         }
 471 }
 472
 473
 474 void VID_Shutdown(void)
 475 {
 476         if (!ctx || !vidx11_display)
 477                 return;
 478
 479         if (vidx11_display)
 480         {
 481                 uninstall_grabs();
 482
 483                 if (vidmode_active)
 484                         XF86VidModeSwitchToMode(vidx11_display, scrnum, vidmodes[0]);
 485                 if (win)
 486                         XDestroyWindow(vidx11_display, win);
 487                 XCloseDisplay(vidx11_display);
 488         }
 489         vidmode_active = false;
 490         vidx11_display = NULL;
 491         win = 0;
 492         ctx = NULL;
 493
 494         GL_CloseLibrary();
 495 }
 496
 497 void signal_handler(int sig)
 498 {
 499         printf("Received signal %d, exiting...\n", sig);
 500         Sys_Quit();
 501         exit(0);
 502 }
 503
 504 void InitSig(void)
 505 {
 506         signal(SIGHUP, signal_handler);
 507         signal(SIGINT, signal_handler);
 508         signal(SIGQUIT, signal_handler);
 509         signal(SIGILL, signal_handler);
 510         signal(SIGTRAP, signal_handler);
 511         signal(SIGIOT, signal_handler);
 512         signal(SIGBUS, signal_handler);
 513         signal(SIGFPE, signal_handler);
 514         signal(SIGSEGV, signal_handler);
 515         signal(SIGTERM, signal_handler);
 516 }
 517
 518 /*
 519 =================
 520 VID_GetWindowSize
 521 =================
 522 */
 523 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 524 {
 525         *x = *y = 0;
 526         *width = scr_width;
 527         *height = scr_height;
 528 }
 529
 530 void VID_Finish (void)
 531 {
 532         int usemouse;
 533         if (r_render.integer)
 534         {
 535                 qglFinish();
 536                 qglXSwapBuffers(vidx11_display, win);
 537         }
 538
 539 // handle the mouse state when windowed if that's changed
 540         usemouse = false;
 541         if (vid_mouse.integer && !key_consoleactive)
 542                 usemouse = true;
 543         if (vidmode_active)
 544                 usemouse = true;
 545         if (usemouse)
 546         {
 547                 if (!usingmouse)
 548                 {
 549                         usingmouse = true;
 550                         IN_ActivateMouse ();
 551                 }
 552         }
 553         else
 554         {
 555                 if (usingmouse)
 556                 {
 557                         usingmouse = false;
 558                         IN_DeactivateMouse ();
 559                 }
 560         }
 561 }
 562
 563 // LordHavoc: ported from SDL 1.2.2, this was far more difficult to port from
 564 // SDL than to simply use the XFree gamma ramp extension, but that affects the
 565 // whole screen even when the game window is inactive, this only affects the
 566 // screen while the window is active, very desirable behavior :)
 567 int VID_SetGamma(float prescale, float gamma, float scale, float base)
 568 {
 569 // LordHavoc: FIXME: finish this code, we need to allocate colors before we can store them
 570 #if 1
 571         return FALSE;
 572 #else
 573         int i, ncolors, c;
 574         unsigned int Rmask, Gmask, Bmask, Rloss, Gloss, Bloss, Rshift, Gshift, Bshift, mask;
 575         XColor xcmap[256];
 576         unsigned short ramp[256];
 577
 578         if (COM_CheckParm("-nogamma"))
 579                 return FALSE;
 580
 581         if (vidx11_visual->class != DirectColor)
 582         {
 583                 Con_Printf("X11 Visual class is %d, can only do gamma on %d\n", vidx11_visual->class, DirectColor);
 584                 return FALSE;
 585         }
 586
 587         Rmask = vidx11_visual->red_mask;
 588         Gmask = vidx11_visual->green_mask;
 589         Bmask = vidx11_visual->blue_mask;
 590
 591         Rshift = 0;
 592         Rloss = 8;
 593         if ((mask = Rmask))
 594         {
 595                 for (;!(mask & 1);mask >>= 1)
 596                         ++Rshift;
 597                 for (;(mask & 1);mask >>= 1)
 598                         --Rloss;
 599         }
 600         Gshift = 0;
 601         Gloss = 8;
 602         if ((mask = Gmask))
 603         {
 604                 for (;!(mask & 1);mask >>= 1)
 605                         ++Gshift;
 606                 for (;(mask & 1);mask >>= 1)
 607                         --Gloss;
 608         }
 609         Bshift = 0;
 610         Bloss = 8;
 611         if ((mask = Bmask))
 612         {
 613                 for (;!(mask & 1);mask >>= 1)
 614                         ++Bshift;
 615                 for (;(mask & 1);mask >>= 1)
 616                         --Bloss;
 617         }
 618
 619         BuildGammaTable16(prescale, gamma, scale, base, ramp);
 620
 621         // convert gamma ramp to palette (yes this seems odd)
 622         ncolors = vidx11_visual->map_entries;
 623         for (i = 0;i < ncolors;i++)
 624         {
 625                 c = (256 * i / ncolors);
 626                 xcmap[i].pixel = ((c >> Rloss) << Rshift) | ((c >> Gloss) << Gshift) | ((c >> Bloss) << Bshift);
 627                 xcmap[i].red   = ramp[c];
 628                 xcmap[i].green = ramp[c];
 629                 xcmap[i].blue  = ramp[c];
 630                 xcmap[i].flags = (DoRed|DoGreen|DoBlue);
 631         }
 632         XStoreColors(vidx11_display, vidx11_colormap, xcmap, ncolors);
 633         XSync(vidx11_display, false);
 634         // FIXME: should this check for BadAccess/BadColor/BadValue errors produced by XStoreColors before setting this true?
 635         return TRUE;
 636 #endif
 637 }
 638
 639 void VID_Init(int fullscreen, int width, int height)
 640 {
 641         int i;
 642 // LordHavoc: FIXME: finish this code, we need to allocate colors before we can store them
 643 #if 0
 644         int gammaattrib[] =
 645         {
 646                 GLX_RGBA,
 647                 GLX_RED_SIZE, 1,
 648                 GLX_GREEN_SIZE, 1,
 649                 GLX_BLUE_SIZE, 1,
 650                 GLX_DOUBLEBUFFER,
 651                 GLX_DEPTH_SIZE, 1,
 652                 GLX_X_VISUAL_TYPE, GLX_DIRECT_COLOR,
 653                 None
 654         };
 655 #endif
 656         int nogammaattrib[] =
 657         {
 658                 GLX_RGBA,
 659                 GLX_RED_SIZE, 1,
 660                 GLX_GREEN_SIZE, 1,
 661                 GLX_BLUE_SIZE, 1,
 662                 GLX_DOUBLEBUFFER,
 663                 GLX_DEPTH_SIZE, 1,
 664                 None
 665         };
 666         XSetWindowAttributes attr;
 667         unsigned long mask;
 668         Window root;
 669         XVisualInfo *visinfo;
 670         int MajorVersion, MinorVersion;
 671
 672         if (!GL_OpenLibrary("libGL.so.1"))
 673                 Sys_Error("Unable to load GL driver\n");
 674
 675         Cvar_RegisterVariable (&vid_dga);
 676         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 677
 678         if (!(vidx11_display = XOpenDisplay(NULL)))
 679         {
 680                 fprintf(stderr, "Error couldn't open the X display\n");
 681                 exit(1);
 682         }
 683
 684         scrnum = DefaultScreen(vidx11_display);
 685         root = RootWindow(vidx11_display, scrnum);
 686
 687         // Get video mode list
 688         MajorVersion = MinorVersion = 0;
 689         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 690                 vidmode_ext = false;
 691         else
 692         {
 693                 Con_Printf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 694                 vidmode_ext = true;
 695         }
 696
 697         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 698          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 699          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 700          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 701          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 702                 Sys_Error("glX functions not found in %s\n", gl_driver);
 703
 704         visinfo = NULL;
 705 // LordHavoc: FIXME: finish this code, we need to allocate colors before we can store them
 706 #if 0
 707         if (!COM_CheckParm("-nogamma"))
 708                 visinfo = qglXChooseVisual(vidx11_display, scrnum, gammaattrib);
 709 #endif
 710         if (!visinfo)
 711         {
 712                 visinfo = qglXChooseVisual(vidx11_display, scrnum, nogammaattrib);
 713                 if (!visinfo)
 714                 {
 715                         Sys_Error("couldn't get an RGB, Double-buffered, Depth visual\n");
 716                         exit(1);
 717                 }
 718         }
 719
 720         if (vidmode_ext)
 721         {
 722                 int best_fit, best_dist, dist, x, y;
 723
 724                 XF86VidModeGetAllModeLines(vidx11_display, scrnum, &num_vidmodes, &vidmodes);
 725
 726                 // Are we going fullscreen?  If so, let's change video mode
 727                 if (fullscreen)
 728                 {
 729                         best_dist = 9999999;
 730                         best_fit = -1;
 731
 732                         for (i = 0; i < num_vidmodes; i++)
 733                         {
 734                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 735                                         continue;
 736
 737                                 x = width - vidmodes[i]->hdisplay;
 738                                 y = height - vidmodes[i]->vdisplay;
 739                                 dist = (x * x) + (y * y);
 740                                 if (dist < best_dist)
 741                                 {
 742                                         best_dist = dist;
 743                                         best_fit = i;
 744                                 }
 745                         }
 746
 747                         if (best_fit != -1)
 748                         {
 749                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 750                                 // to width/height =, so the window will take the full area of
 751                                 // the mode chosen
 752                                 width = vidmodes[best_fit]->hdisplay;
 753                                 height = vidmodes[best_fit]->vdisplay;
 754
 755                                 // change to the mode
 756                                 XF86VidModeSwitchToMode(vidx11_display, scrnum, vidmodes[best_fit]);
 757                                 vidmode_active = true;
 758
 759                                 // Move the viewport to top left
 760                                 XF86VidModeSetViewPort(vidx11_display, scrnum, 0, 0);
 761                         }
 762                         else
 763                                 fullscreen = 0;
 764                 }
 765         }
 766
 767         // LordHavoc: save the visual for use in gamma ramp settings later
 768         vidx11_visual = visinfo->visual;
 769
 770         /* window attributes */
 771         attr.background_pixel = 0;
 772         attr.border_pixel = 0;
 773         // LordHavoc: save the colormap for later, too
 774         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 775         attr.event_mask = X_MASK;
 776         if (vidmode_active)
 777         {
 778                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 779                 attr.override_redirect = True;
 780                 attr.backing_store = NotUseful;
 781                 attr.save_under = False;
 782         }
 783         else
 784                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 785
 786         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 787         XStoreName(vidx11_display, win, gamename);
 788         XMapWindow(vidx11_display, win);
 789
 790         // LordHavoc: making the close button on a window do the right thing
 791         // seems to involve this mess, sigh...
 792         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 793         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 794
 795         if (vidmode_active)
 796         {
 797                 XMoveWindow(vidx11_display, win, 0, 0);
 798                 XRaiseWindow(vidx11_display, win);
 799                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 800                 XFlush(vidx11_display);
 801                 // Move the viewport to top left
 802                 XF86VidModeSetViewPort(vidx11_display, scrnum, 0, 0);
 803         }
 804
 805         XFlush(vidx11_display);
 806
 807         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 808
 809         qglXMakeCurrent(vidx11_display, win, ctx);
 810
 811         scr_width = width;
 812         scr_height = height;
 813
 814         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 815                 Sys_Error("glGetString not found in %s", gl_driver);
 816
 817         gl_renderer = qglGetString(GL_RENDERER);
 818         gl_vendor = qglGetString(GL_VENDOR);
 819         gl_version = qglGetString(GL_VERSION);
 820         gl_extensions = qglGetString(GL_EXTENSIONS);
 821         gl_platform = "GLX";
 822         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, scrnum);
 823
 824         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 825         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_video_sync", videosyncfuncs, "-novideosync", false);
 826
 827         InitSig(); // trap evil signals
 828
 829         vid_hidden = false;
 830
 831         GL_Init();
 832
 833         Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
 834 }
 835
 836 void Sys_SendKeyEvents(void)
 837 {
 838         HandleEvents();
 839 }
 840
 841 void IN_Init(void)
 842 {
 843         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 844                 mouse_avail = false;
 845 }
 846
 847 void IN_Shutdown(void)
 848 {
 849 }
 850
 851 /*
 852 ===========
 853 IN_Commands
 854 ===========
 855 */
 856 void IN_Commands (void)
 857 {
 858 }
 859
 860 void IN_Move (usercmd_t *cmd)
 861 {
 862         if (mouse_avail)
 863                 IN_Mouse(cmd, mouse_x, mouse_y);
 864         mouse_x = 0;
 865         mouse_y = 0;
 866 }
 867
 868 static void *prjobj = NULL;
 869
 870 int GL_OpenLibrary(const char *name)
 871 {
 872         Con_Printf("Loading GL driver %s\n", name);
 873         GL_CloseLibrary();
 874         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 875         {
 876                 Con_Printf("Unable to open symbol list for %s\n", name);
 877                 return false;
 878         }
 879         strcpy(gl_driver, name);
 880         return true;
 881 }
 882
 883 void GL_CloseLibrary(void)
 884 {
 885         if (prjobj)
 886                 dlclose(prjobj);
 887         prjobj = NULL;
 888         gl_driver[0] = 0;
 889         qglXGetProcAddressARB = NULL;
 890         gl_extensions = "";
 891         gl_platform = "";
 892         gl_platformextensions = "";
 893 }
 894
 895 void *GL_GetProcAddress(const char *name)
 896 {
 897         void *p = NULL;
 898         if (qglXGetProcAddressARB != NULL)
 899                 p = (void *) qglXGetProcAddressARB(name);
 900         if (p == NULL)
 901                 p = (void *) dlsym(prjobj, name);
 902         return p;
 903 }