vid_glx.c

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