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)
 479                         {
 480                                 vid.width = event.xconfigure.width;
 481                                 vid.height = event.xconfigure.height;
 482                         }
 483                         break;
 484                 case DestroyNotify:
 485                         // window has been destroyed
 486                         Sys_Quit(0);
 487                         break;
 488                 case ClientMessage:
 489                         // window manager messages
 490                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 491                                 Sys_Quit(0);
 492                         break;
 493                 case MapNotify:
 494                         if (vid_isoverrideredirect)
 495                                 break;
 496                         // window restored
 497                         vid_hidden = false;
 498                         VID_RestoreSystemGamma();
 499
 500                         if(vid_isvidmodefullscreen)
 501                         {
 502                                 // set our video mode
 503                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 504
 505                                 // Move the viewport to top left
 506                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 507                         }
 508
 509                         if(vid_isnetwmfullscreen)
 510                         {
 511                                 // make sure it's fullscreen
 512                                 XEvent event;
 513                                 event.type = ClientMessage;
 514                                 event.xclient.serial = 0;
 515                                 event.xclient.send_event = True;
 516                                 event.xclient.message_type = net_wm_state_atom;
 517                                 event.xclient.window = win;
 518                                 event.xclient.format = 32;
 519                                 event.xclient.data.l[0] = 1;
 520                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 521                                 event.xclient.data.l[2] = 0;
 522                                 event.xclient.data.l[3] = 1;
 523                                 event.xclient.data.l[4] = 0;
 524                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 525                         }
 526
 527                         dowarp = true;
 528
 529                         break;
 530                 case UnmapNotify:
 531                         if (vid_isoverrideredirect)
 532                                 break;
 533                         // window iconified/rolledup/whatever
 534                         vid_hidden = true;
 535                         VID_RestoreSystemGamma();
 536
 537                         if(vid_isvidmodefullscreen)
 538                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 539
 540                         break;
 541                 case FocusIn:
 542                         if (vid_isoverrideredirect)
 543                                 break;
 544                         // window is now the input focus
 545                         vid_activewindow = true;
 546                         break;
 547                 case FocusOut:
 548                         if (vid_isoverrideredirect)
 549                                 break;
 550
 551                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 552                         {
 553                                 // iconify netwm fullscreen window when it loses focus
 554                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 555                                 XEvent event;
 556                                 event.type = ClientMessage;
 557                                 event.xclient.serial = 0;
 558                                 event.xclient.send_event = True;
 559                                 event.xclient.message_type = net_wm_state_atom;
 560                                 event.xclient.window = win;
 561                                 event.xclient.format = 32;
 562                                 event.xclient.data.l[0] = 1;
 563                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 564                                 event.xclient.data.l[2] = 0;
 565                                 event.xclient.data.l[3] = 1;
 566                                 event.xclient.data.l[4] = 0;
 567                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 568                         }
 569
 570                         // window is no longer the input focus
 571                         vid_activewindow = false;
 572                         VID_RestoreSystemGamma();
 573
 574                         break;
 575                 case EnterNotify:
 576                         // mouse entered window
 577                         break;
 578                 case LeaveNotify:
 579                         // mouse left window
 580                         break;
 581                 }
 582         }
 583
 584         if (dowarp)
 585         {
 586                 /* move the mouse to the window center again */
 587                 // we'll catch the warp motion by its send_event flag, updating the
 588                 // stored mouse position without adding any delta motion
 589                 XEvent event;
 590                 event.type = MotionNotify;
 591                 event.xmotion.display = vidx11_display;
 592                 event.xmotion.window = win;
 593                 event.xmotion.x = vid.width / 2;
 594                 event.xmotion.y = vid.height / 2;
 595                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 596                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 597         }
 598 }
 599
 600 static void *prjobj = NULL;
 601
 602 static void GL_CloseLibrary(void)
 603 {
 604         if (prjobj)
 605                 dlclose(prjobj);
 606         prjobj = NULL;
 607         gl_driver[0] = 0;
 608         qglXGetProcAddressARB = NULL;
 609         gl_extensions = "";
 610         gl_platform = "";
 611         gl_platformextensions = "";
 612 }
 613
 614 static int GL_OpenLibrary(const char *name)
 615 {
 616         Con_Printf("Loading OpenGL driver %s\n", name);
 617         GL_CloseLibrary();
 618         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 619         {
 620                 Con_Printf("Unable to open symbol list for %s\n", name);
 621                 return false;
 622         }
 623         strlcpy(gl_driver, name, sizeof(gl_driver));
 624         return true;
 625 }
 626
 627 void *GL_GetProcAddress(const char *name)
 628 {
 629         void *p = NULL;
 630         if (qglXGetProcAddressARB != NULL)
 631                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 632         if (p == NULL)
 633                 p = (void *) dlsym(prjobj, name);
 634         return p;
 635 }
 636
 637 void VID_Shutdown(void)
 638 {
 639         if (!ctx || !vidx11_display)
 640                 return;
 641
 642         VID_SetMouse(false, false, false);
 643         VID_RestoreSystemGamma();
 644
 645         // FIXME: glXDestroyContext here?
 646         if (vid_isvidmodefullscreen)
 647                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 648         if (win)
 649                 XDestroyWindow(vidx11_display, win);
 650         XCloseDisplay(vidx11_display);
 651
 652         vid_hidden = true;
 653         vid_isfullscreen = false;
 654         vid_isnetwmfullscreen = false;
 655         vid_isvidmodefullscreen = false;
 656         vid_isoverrideredirect = false;
 657         vidx11_display = NULL;
 658         win = 0;
 659         ctx = NULL;
 660
 661         GL_CloseLibrary();
 662         Key_ClearStates ();
 663 }
 664
 665 void signal_handler(int sig)
 666 {
 667         Con_Printf("Received signal %d, exiting...\n", sig);
 668         VID_RestoreSystemGamma();
 669         Sys_Quit(1);
 670 }
 671
 672 void InitSig(void)
 673 {
 674         signal(SIGHUP, signal_handler);
 675         signal(SIGINT, signal_handler);
 676         signal(SIGQUIT, signal_handler);
 677         signal(SIGILL, signal_handler);
 678         signal(SIGTRAP, signal_handler);
 679         signal(SIGIOT, signal_handler);
 680         signal(SIGBUS, signal_handler);
 681         signal(SIGFPE, signal_handler);
 682         signal(SIGSEGV, signal_handler);
 683         signal(SIGTERM, signal_handler);
 684 }
 685
 686 void VID_Finish (void)
 687 {
 688         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 689         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 690         {
 691                 vid_usingvsync = vid_usevsync;
 692                 if (qglXSwapIntervalSGI (vid_usevsync))
 693                         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");
 694         }
 695
 696         if (r_render.integer)
 697         {
 698                 CHECKGLERROR
 699                 if (r_speeds.integer || gl_finish.integer)
 700                 {
 701                         qglFinish();CHECKGLERROR
 702                 }
 703                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 704         }
 705
 706         if (vid_x11_hardwaregammasupported)
 707                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 708 }
 709
 710 int VID_SetGamma(unsigned short *ramps, int rampsize)
 711 {
 712         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 713 }
 714
 715 int VID_GetGamma(unsigned short *ramps, int rampsize)
 716 {
 717         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 718 }
 719
 720 void VID_Init(void)
 721 {
 722 #if !defined(__APPLE__) && !defined(SUNOS)
 723         Cvar_RegisterVariable (&vid_dgamouse);
 724 #endif
 725         Cvar_RegisterVariable (&vid_netwmfullscreen);
 726         InitSig(); // trap evil signals
 727 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 728         if (COM_CheckParm ("-nomouse"))
 729                 mouse_avail = false;
 730 }
 731
 732 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 733 {
 734         *attrib++ = GLX_RGBA;
 735         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 736         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 737         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 738         *attrib++ = GLX_DOUBLEBUFFER;
 739         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 740         // if stencil is enabled, ask for alpha too
 741         if (stencil)
 742         {
 743                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 744                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 745         }
 746         if (stereobuffer)
 747                 *attrib++ = GLX_STEREO;
 748         if (samples > 1)
 749         {
 750                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 751                 *attrib++ = 1;
 752                 *attrib++ = GLX_SAMPLES_ARB;
 753                 *attrib++ = samples;
 754         }
 755         *attrib++ = None;
 756 }
 757
 758 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 759 {
 760         int i;
 761         int attrib[32];
 762         XSetWindowAttributes attr;
 763         XClassHint *clshints;
 764         XWMHints *wmhints;
 765         XSizeHints *szhints;
 766         unsigned long mask;
 767         XVisualInfo *visinfo;
 768         int MajorVersion, MinorVersion;
 769         const char *drivername;
 770
 771         vid_isfullscreen = false;
 772         vid_isnetwmfullscreen = false;
 773         vid_isvidmodefullscreen = false;
 774         vid_isoverrideredirect = false;
 775
 776 #if defined(__APPLE__) && defined(__MACH__)
 777         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 778 #else
 779         drivername = "libGL.so.1";
 780 #endif
 781 // 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
 782 // 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
 783 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 784         i = COM_CheckParm("-gl_driver");
 785         if (i && i < com_argc - 1)
 786                 drivername = com_argv[i + 1];
 787         if (!GL_OpenLibrary(drivername))
 788         {
 789                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 790                 return false;
 791         }
 792
 793         if (!(vidx11_display = XOpenDisplay(NULL)))
 794         {
 795                 Con_Print("Couldn't open the X display\n");
 796                 return false;
 797         }
 798
 799         // LordHavoc: making the close button on a window do the right thing
 800         // seems to involve this mess, sigh...
 801         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 802         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 803         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 804         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 805
 806         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 807         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 808
 809         vidx11_screen = DefaultScreen(vidx11_display);
 810         root = RootWindow(vidx11_display, vidx11_screen);
 811
 812         // Get video mode list
 813         MajorVersion = MinorVersion = 0;
 814         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 815                 vidmode_ext = false;
 816         else
 817         {
 818                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 819                 vidmode_ext = true;
 820         }
 821
 822         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 823          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 824          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 825          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 826          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 827          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 828         {
 829                 Con_Printf("glX functions not found in %s\n", gl_driver);
 830                 return false;
 831         }
 832
 833         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 834         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 835         if (!visinfo)
 836         {
 837                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 838                 return false;
 839         }
 840
 841         if (fullscreen)
 842         {
 843                 if(vid_netwmfullscreen.integer)
 844                 {
 845                         // TODO detect WM support
 846                         vid_isnetwmfullscreen = true;
 847                         vid_isfullscreen = true;
 848                         // width and height will be filled in later
 849                 }
 850
 851                 if(!vid_isfullscreen && vidmode_ext)
 852                 {
 853                         int best_fit, best_dist, dist, x, y;
 854
 855                         // Are we going fullscreen?  If so, let's change video mode
 856                         XF86VidModeModeLine *current_vidmode;
 857                         XF86VidModeModeInfo **vidmodes;
 858                         int num_vidmodes;
 859
 860                         // This nice hack comes from the SDL source code
 861                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 862                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 863
 864                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 865                         best_dist = 0;
 866                         best_fit = -1;
 867
 868                         for (i = 0; i < num_vidmodes; i++)
 869                         {
 870                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 871                                         continue;
 872
 873                                 x = width - vidmodes[i]->hdisplay;
 874                                 y = height - vidmodes[i]->vdisplay;
 875                                 dist = (x * x) + (y * y);
 876                                 if (best_fit == -1 || dist < best_dist)
 877                                 {
 878                                         best_dist = dist;
 879                                         best_fit = i;
 880                                 }
 881                         }
 882
 883                         if (best_fit != -1)
 884                         {
 885                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 886                                 // to width/height =, so the window will take the full area of
 887                                 // the mode chosen
 888                                 width = vidmodes[best_fit]->hdisplay;
 889                                 height = vidmodes[best_fit]->vdisplay;
 890
 891                                 // change to the mode
 892                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 893                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 894                                 vid_isvidmodefullscreen = true;
 895                                 vid_isfullscreen = true;
 896
 897                                 // Move the viewport to top left
 898                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 899                         }
 900
 901                         free(vidmodes);
 902                 }
 903
 904                 if(!vid_isfullscreen)
 905                 {
 906                         // sorry, no FS available
 907                         // use the full desktop resolution
 908                         vid_isfullscreen = true;
 909                         // width and height will be filled in later
 910                         width = DisplayWidth(vidx11_display, vidx11_screen);
 911                         height = DisplayHeight(vidx11_display, vidx11_screen);
 912                 }
 913         }
 914
 915         // LordHavoc: save the visual for use in gamma ramp settings later
 916         vidx11_visual = visinfo->visual;
 917
 918         /* window attributes */
 919         attr.background_pixel = 0;
 920         attr.border_pixel = 0;
 921         // LordHavoc: save the colormap for later, too
 922         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 923         attr.event_mask = X_MASK;
 924
 925         if (fullscreen)
 926         {
 927                 if(vid_isnetwmfullscreen)
 928                 {
 929                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 930                         attr.backing_store = NotUseful;
 931                         attr.save_under = False;
 932                 }
 933                 else
 934                 {
 935                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 936                         attr.override_redirect = True;
 937                         attr.backing_store = NotUseful;
 938                         attr.save_under = False;
 939                         vid_isoverrideredirect = true; // so it knows to grab
 940                 }
 941         }
 942         else
 943         {
 944                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 945         }
 946
 947         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 948
 949         wmhints = XAllocWMHints();
 950         if(XpmCreatePixmapFromData(vidx11_display, win,
 951                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 952                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 953                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 954
 955         clshints = XAllocClassHint();
 956         clshints->res_name = strdup(gamename);
 957         clshints->res_class = strdup("DarkPlaces");
 958
 959         szhints = XAllocSizeHints();
 960         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
 961         {
 962                 szhints->min_width = szhints->max_width = width;
 963                 szhints->min_height = szhints->max_height = height;
 964                 szhints->flags |= PMinSize | PMaxSize;
 965         }
 966
 967         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 968         XFree(clshints);
 969         XFree(wmhints);
 970         XFree(szhints);
 971
 972         //XStoreName(vidx11_display, win, gamename);
 973         XMapWindow(vidx11_display, win);
 974
 975         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 976
 977         if (vid_isoverrideredirect)
 978         {
 979                 XMoveWindow(vidx11_display, win, 0, 0);
 980                 XRaiseWindow(vidx11_display, win);
 981                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 982                 XFlush(vidx11_display);
 983         }
 984
 985         if(vid_isvidmodefullscreen)
 986         {
 987                 // Move the viewport to top left
 988                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 989         }
 990
 991         //XSync(vidx11_display, False);
 992
 993         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 994         if (!ctx)
 995         {
 996                 Con_Printf ("glXCreateContext failed\n");
 997                 return false;
 998         }
 999
1000         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1001         {
1002                 Con_Printf ("glXMakeCurrent failed\n");
1003                 return false;
1004         }
1005
1006         XSync(vidx11_display, False);
1007
1008         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1009         {
1010                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1011                 return false;
1012         }
1013
1014         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1015         gl_platform = "GLX";
1016         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1017
1018         gl_videosyncavailable = false;
1019
1020 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1021 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1022 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1023         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1024 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1025 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1026 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1027         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1028
1029         vid_usingmousegrab = false;
1030         vid_usingmouse = false;
1031         vid_usinghidecursor = false;
1032         vid_usingvsync = false;
1033         vid_hidden = false;
1034         vid_activewindow = true;
1035         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1036 #if !defined(__APPLE__) && !defined(SUNOS)
1037         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1038         if (!vid_x11_dgasupported)
1039                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1040 #endif
1041         GL_Init();
1042         return true;
1043 }
1044
1045 void Sys_SendKeyEvents(void)
1046 {
1047         static qboolean sound_active = true;
1048
1049         // enable/disable sound on focus gain/loss
1050         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
1051         {
1052                 if (!sound_active)
1053                 {
1054                         S_UnblockSound ();
1055                         sound_active = true;
1056                 }
1057         }
1058         else
1059         {
1060                 if (sound_active)
1061                 {
1062                         S_BlockSound ();
1063                         sound_active = false;
1064                 }
1065         }
1066
1067         HandleEvents();
1068 }
1069
1070 void IN_Move (void)
1071 {
1072 }