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_Super_L:
 208                 case XK_Super_R: key = K_SUPER;                 break;
 209                 case XK_Meta_L:
 210                 case XK_Meta_R:
 211                 case XK_Alt_L:
 212                 case XK_ISO_Level3_Shift:
 213                 case XK_Alt_R: key = K_ALT;                     break;
 214
 215                 case XK_KP_Begin: key = K_KP_5; break;
 216
 217                 case XK_Insert:key = K_INS; break;
 218                 case XK_KP_Insert: key = K_KP_INS; break;
 219
 220                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 221                 case XK_KP_Add:  key = K_KP_PLUS; break;
 222                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 223                 case XK_KP_Divide: key = K_KP_SLASH; break;
 224
 225                 case XK_section:        key = '~'; break;
 226
 227                 default:
 228                         if (keysym < 32)
 229                                 break;
 230
 231                         if (keysym >= 'A' && keysym <= 'Z')
 232                                 key = keysym - 'A' + 'a';
 233                         else
 234                                 key = keysym;
 235
 236                         break;
 237         }
 238
 239         return key;
 240 }
 241
 242 static Cursor CreateNullCursor(Display *display, Window root)
 243 {
 244         Pixmap cursormask;
 245         XGCValues xgc;
 246         GC gc;
 247         XColor dummycolour;
 248         Cursor cursor;
 249
 250         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 251         xgc.function = GXclear;
 252         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 253         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 254         dummycolour.pixel = 0;
 255         dummycolour.red = 0;
 256         dummycolour.flags = 04;
 257         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 258         XFreePixmap(display,cursormask);
 259         XFreeGC(display,gc);
 260         return cursor;
 261 }
 262
 263 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 264 {
 265         static int originalmouseparms_num;
 266         static int originalmouseparms_denom;
 267         static int originalmouseparms_threshold;
 268         static qboolean restore_spi;
 269
 270 #if !defined(__APPLE__) && !defined(SUNOS)
 271         qboolean usedgamouse;
 272 #endif
 273
 274         if (!vidx11_display || !win)
 275                 return;
 276
 277         if (relative)
 278                 fullscreengrab = true;
 279
 280         if (!mouse_avail)
 281                 fullscreengrab = relative = hidecursor = false;
 282
 283 #if !defined(__APPLE__) && !defined(SUNOS)
 284         usedgamouse = relative && vid_dgamouse.integer;
 285         if (!vid_x11_dgasupported)
 286                 usedgamouse = false;
 287         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 288                 VID_SetMouse(false, false, false); // ungrab first!
 289 #endif
 290
 291         if (vid_usingmousegrab != fullscreengrab)
 292         {
 293                 vid_usingmousegrab = fullscreengrab;
 294                 cl_ignoremousemoves = 2;
 295                 if (fullscreengrab)
 296                 {
 297                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 298                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 299                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 300                 }
 301                 else
 302                 {
 303                         XUngrabPointer(vidx11_display, CurrentTime);
 304                         XUngrabKeyboard(vidx11_display, CurrentTime);
 305                 }
 306         }
 307
 308         if (relative)
 309         {
 310                 if (!vid_usingmouse)
 311                 {
 312                         XWindowAttributes attribs_1;
 313                         XSetWindowAttributes attribs_2;
 314
 315                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 316                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 317                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 318
 319 #if !defined(__APPLE__) && !defined(SUNOS)
 320                         vid_usingdgamouse = usedgamouse;
 321                         if (usedgamouse)
 322                         {
 323                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 324                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 325                         }
 326                         else
 327 #endif
 328                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 329
 330 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 331 #if !defined(__APPLE__) && !defined(SUNOS)
 332                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 333 #else
 334                         if (!COM_CheckParm ("-noforcemparms"))
 335 #endif
 336                         {
 337                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 338                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 339                                 restore_spi = true;
 340                         }
 341                         else
 342                                 restore_spi = false;
 343
 344                         cl_ignoremousemoves = 2;
 345                         vid_usingmouse = true;
 346                 }
 347         }
 348         else
 349         {
 350                 if (vid_usingmouse)
 351                 {
 352 #if !defined(__APPLE__) && !defined(SUNOS)
 353                         if (vid_usingdgamouse)
 354                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 355                         vid_usingdgamouse = false;
 356 #endif
 357                         cl_ignoremousemoves = 2;
 358
 359                         if (restore_spi)
 360                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 361                         restore_spi = false;
 362
 363                         vid_usingmouse = false;
 364                 }
 365         }
 366
 367         if (vid_usinghidecursor != hidecursor)
 368         {
 369                 vid_usinghidecursor = hidecursor;
 370                 if (hidecursor)
 371                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 372                 else
 373                         XUndefineCursor(vidx11_display, win);
 374         }
 375 }
 376
 377 static keynum_t buttonremap[18] =
 378 {
 379         K_MOUSE1,
 380         K_MOUSE3,
 381         K_MOUSE2,
 382         K_MWHEELUP,
 383         K_MWHEELDOWN,
 384         K_MOUSE4,
 385         K_MOUSE5,
 386         K_MOUSE6,
 387         K_MOUSE7,
 388         K_MOUSE8,
 389         K_MOUSE9,
 390         K_MOUSE10,
 391         K_MOUSE11,
 392         K_MOUSE12,
 393         K_MOUSE13,
 394         K_MOUSE14,
 395         K_MOUSE15,
 396         K_MOUSE16,
 397 };
 398
 399 static void HandleEvents(void)
 400 {
 401         XEvent event;
 402         int key;
 403         char ascii;
 404         qboolean dowarp = false;
 405
 406         if (!vidx11_display)
 407                 return;
 408
 409         while (XPending(vidx11_display))
 410         {
 411                 XNextEvent(vidx11_display, &event);
 412
 413                 switch (event.type)
 414                 {
 415                 case KeyPress:
 416                         // key pressed
 417                         key = XLateKey (&event.xkey, &ascii);
 418                         Key_Event(key, ascii, true);
 419                         break;
 420
 421                 case KeyRelease:
 422                         // key released
 423                         key = XLateKey (&event.xkey, &ascii);
 424                         Key_Event(key, ascii, false);
 425                         break;
 426
 427                 case MotionNotify:
 428                         // mouse moved
 429                         if (vid_usingmouse)
 430                         {
 431 #if !defined(__APPLE__) && !defined(SUNOS)
 432                                 if (vid_usingdgamouse)
 433                                 {
 434                                         in_mouse_x += event.xmotion.x_root;
 435                                         in_mouse_y += event.xmotion.y_root;
 436                                 }
 437                                 else
 438 #endif
 439                                 {
 440                                         if (!event.xmotion.send_event)
 441                                         {
 442                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 443                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 444                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 445                                                 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)
 446                                                         dowarp = true;
 447                                         }
 448                                 }
 449                         }
 450                         in_windowmouse_x = event.xmotion.x;
 451                         in_windowmouse_y = event.xmotion.y;
 452                         break;
 453
 454                 case ButtonPress:
 455                         // mouse button pressed
 456                         if (event.xbutton.button <= 18)
 457                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 458                         else
 459                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 460                         break;
 461
 462                 case ButtonRelease:
 463                         // mouse button released
 464                         if (event.xbutton.button <= 18)
 465                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 466                         else
 467                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 468                         break;
 469
 470                 case CreateNotify:
 471                         // window created
 472                         win_x = event.xcreatewindow.x;
 473                         win_y = event.xcreatewindow.y;
 474                         break;
 475
 476                 case ConfigureNotify:
 477                         // window changed size/location
 478                         win_x = event.xconfigure.x;
 479                         win_y = event.xconfigure.y;
 480                         if(vid_resizable.integer < 2 || vid_isnetwmfullscreen)
 481                         {
 482                                 vid.width = event.xconfigure.width;
 483                                 vid.height = event.xconfigure.height;
 484                                 if(vid_isnetwmfullscreen)
 485                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 486                                 else
 487                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 488                         }
 489                         break;
 490                 case DestroyNotify:
 491                         // window has been destroyed
 492                         Sys_Quit(0);
 493                         break;
 494                 case ClientMessage:
 495                         // window manager messages
 496                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 497                                 Sys_Quit(0);
 498                         break;
 499                 case MapNotify:
 500                         if (vid_isoverrideredirect)
 501                                 break;
 502                         // window restored
 503                         vid_hidden = false;
 504                         VID_RestoreSystemGamma();
 505
 506                         if(vid_isvidmodefullscreen)
 507                         {
 508                                 // set our video mode
 509                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 510
 511                                 // Move the viewport to top left
 512                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 513                         }
 514
 515                         if(vid_isnetwmfullscreen)
 516                         {
 517                                 // make sure it's fullscreen
 518                                 XEvent event;
 519                                 event.type = ClientMessage;
 520                                 event.xclient.serial = 0;
 521                                 event.xclient.send_event = True;
 522                                 event.xclient.message_type = net_wm_state_atom;
 523                                 event.xclient.window = win;
 524                                 event.xclient.format = 32;
 525                                 event.xclient.data.l[0] = 1;
 526                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 527                                 event.xclient.data.l[2] = 0;
 528                                 event.xclient.data.l[3] = 1;
 529                                 event.xclient.data.l[4] = 0;
 530                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 531                         }
 532
 533                         dowarp = true;
 534
 535                         break;
 536                 case UnmapNotify:
 537                         if (vid_isoverrideredirect)
 538                                 break;
 539                         // window iconified/rolledup/whatever
 540                         vid_hidden = true;
 541                         VID_RestoreSystemGamma();
 542
 543                         if(vid_isvidmodefullscreen)
 544                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 545
 546                         break;
 547                 case FocusIn:
 548                         if (vid_isoverrideredirect)
 549                                 break;
 550                         // window is now the input focus
 551                         vid_activewindow = true;
 552                         break;
 553                 case FocusOut:
 554                         if (vid_isoverrideredirect)
 555                                 break;
 556
 557                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 558                         {
 559                                 // iconify netwm fullscreen window when it loses focus
 560                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 561                                 XEvent event;
 562                                 event.type = ClientMessage;
 563                                 event.xclient.serial = 0;
 564                                 event.xclient.send_event = True;
 565                                 event.xclient.message_type = net_wm_state_atom;
 566                                 event.xclient.window = win;
 567                                 event.xclient.format = 32;
 568                                 event.xclient.data.l[0] = 1;
 569                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 570                                 event.xclient.data.l[2] = 0;
 571                                 event.xclient.data.l[3] = 1;
 572                                 event.xclient.data.l[4] = 0;
 573                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 574                         }
 575
 576                         // window is no longer the input focus
 577                         vid_activewindow = false;
 578                         VID_RestoreSystemGamma();
 579
 580                         break;
 581                 case EnterNotify:
 582                         // mouse entered window
 583                         break;
 584                 case LeaveNotify:
 585                         // mouse left window
 586                         break;
 587                 }
 588         }
 589
 590         if (dowarp)
 591         {
 592                 /* move the mouse to the window center again */
 593                 // we'll catch the warp motion by its send_event flag, updating the
 594                 // stored mouse position without adding any delta motion
 595                 XEvent event;
 596                 event.type = MotionNotify;
 597                 event.xmotion.display = vidx11_display;
 598                 event.xmotion.window = win;
 599                 event.xmotion.x = vid.width / 2;
 600                 event.xmotion.y = vid.height / 2;
 601                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 602                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 603         }
 604 }
 605
 606 static void *prjobj = NULL;
 607
 608 static void GL_CloseLibrary(void)
 609 {
 610         if (prjobj)
 611                 dlclose(prjobj);
 612         prjobj = NULL;
 613         gl_driver[0] = 0;
 614         qglXGetProcAddressARB = NULL;
 615         gl_extensions = "";
 616         gl_platform = "";
 617         gl_platformextensions = "";
 618 }
 619
 620 static int GL_OpenLibrary(const char *name)
 621 {
 622         Con_Printf("Loading OpenGL driver %s\n", name);
 623         GL_CloseLibrary();
 624         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 625         {
 626                 Con_Printf("Unable to open symbol list for %s\n", name);
 627                 return false;
 628         }
 629         strlcpy(gl_driver, name, sizeof(gl_driver));
 630         return true;
 631 }
 632
 633 void *GL_GetProcAddress(const char *name)
 634 {
 635         void *p = NULL;
 636         if (qglXGetProcAddressARB != NULL)
 637                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 638         if (p == NULL)
 639                 p = (void *) dlsym(prjobj, name);
 640         return p;
 641 }
 642
 643 void VID_Shutdown(void)
 644 {
 645         if (!ctx || !vidx11_display)
 646                 return;
 647
 648         VID_SetMouse(false, false, false);
 649         VID_RestoreSystemGamma();
 650
 651         // FIXME: glXDestroyContext here?
 652         if (vid_isvidmodefullscreen)
 653                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 654         if (win)
 655                 XDestroyWindow(vidx11_display, win);
 656         XCloseDisplay(vidx11_display);
 657
 658         vid_hidden = true;
 659         vid_isfullscreen = false;
 660         vid_isnetwmfullscreen = false;
 661         vid_isvidmodefullscreen = false;
 662         vid_isoverrideredirect = false;
 663         vidx11_display = NULL;
 664         win = 0;
 665         ctx = NULL;
 666
 667         GL_CloseLibrary();
 668         Key_ClearStates ();
 669 }
 670
 671 void signal_handler(int sig)
 672 {
 673         Con_Printf("Received signal %d, exiting...\n", sig);
 674         VID_RestoreSystemGamma();
 675         Sys_Quit(1);
 676 }
 677
 678 void InitSig(void)
 679 {
 680         signal(SIGHUP, signal_handler);
 681         signal(SIGINT, signal_handler);
 682         signal(SIGQUIT, signal_handler);
 683         signal(SIGILL, signal_handler);
 684         signal(SIGTRAP, signal_handler);
 685         signal(SIGIOT, signal_handler);
 686         signal(SIGBUS, signal_handler);
 687         signal(SIGFPE, signal_handler);
 688         signal(SIGSEGV, signal_handler);
 689         signal(SIGTERM, signal_handler);
 690 }
 691
 692 void VID_Finish (void)
 693 {
 694         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 695         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 696         {
 697                 vid_usingvsync = vid_usevsync;
 698                 if (qglXSwapIntervalSGI (vid_usevsync))
 699                         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");
 700         }
 701
 702         if (r_render.integer)
 703         {
 704                 CHECKGLERROR
 705                 if (r_speeds.integer == 2 || gl_finish.integer)
 706                 {
 707                         qglFinish();CHECKGLERROR
 708                 }
 709                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 710         }
 711
 712         if (vid_x11_hardwaregammasupported)
 713                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 714 }
 715
 716 int VID_SetGamma(unsigned short *ramps, int rampsize)
 717 {
 718         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 719 }
 720
 721 int VID_GetGamma(unsigned short *ramps, int rampsize)
 722 {
 723         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 724 }
 725
 726 void VID_Init(void)
 727 {
 728 #if !defined(__APPLE__) && !defined(SUNOS)
 729         Cvar_RegisterVariable (&vid_dgamouse);
 730 #endif
 731         Cvar_RegisterVariable (&vid_netwmfullscreen);
 732         InitSig(); // trap evil signals
 733 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 734         if (COM_CheckParm ("-nomouse"))
 735                 mouse_avail = false;
 736 }
 737
 738 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 739 {
 740         *attrib++ = GLX_RGBA;
 741         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 742         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 743         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 744         *attrib++ = GLX_DOUBLEBUFFER;
 745         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 746         // if stencil is enabled, ask for alpha too
 747         if (stencil)
 748         {
 749                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 750                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 751         }
 752         if (stereobuffer)
 753                 *attrib++ = GLX_STEREO;
 754         if (samples > 1)
 755         {
 756                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 757                 *attrib++ = 1;
 758                 *attrib++ = GLX_SAMPLES_ARB;
 759                 *attrib++ = samples;
 760         }
 761         *attrib++ = None;
 762 }
 763
 764 int VID_InitMode(int fullscreen, int *width, int *height, int bpp, int refreshrate, int stereobuffer, int samples)
 765 {
 766         int i;
 767         int attrib[32];
 768         XSetWindowAttributes attr;
 769         XClassHint *clshints;
 770         XWMHints *wmhints;
 771         XSizeHints *szhints;
 772         unsigned long mask;
 773         XVisualInfo *visinfo;
 774         int MajorVersion, MinorVersion;
 775         const char *drivername;
 776
 777         vid_isfullscreen = false;
 778         vid_isnetwmfullscreen = false;
 779         vid_isvidmodefullscreen = false;
 780         vid_isoverrideredirect = false;
 781
 782 #if defined(__APPLE__) && defined(__MACH__)
 783         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 784 #else
 785         drivername = "libGL.so.1";
 786 #endif
 787 // 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
 788 // 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
 789 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 790         i = COM_CheckParm("-gl_driver");
 791         if (i && i < com_argc - 1)
 792                 drivername = com_argv[i + 1];
 793         if (!GL_OpenLibrary(drivername))
 794         {
 795                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 796                 return false;
 797         }
 798
 799         if (!(vidx11_display = XOpenDisplay(NULL)))
 800         {
 801                 Con_Print("Couldn't open the X display\n");
 802                 return false;
 803         }
 804
 805         // LordHavoc: making the close button on a window do the right thing
 806         // seems to involve this mess, sigh...
 807         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 808         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 809         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 810         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 811
 812         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 813         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 814
 815         vidx11_screen = DefaultScreen(vidx11_display);
 816         root = RootWindow(vidx11_display, vidx11_screen);
 817
 818         // Get video mode list
 819         MajorVersion = MinorVersion = 0;
 820         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 821                 vidmode_ext = false;
 822         else
 823         {
 824                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 825                 vidmode_ext = true;
 826         }
 827
 828         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 829          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 830          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 831          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 832          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 833          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 834         {
 835                 Con_Printf("glX functions not found in %s\n", gl_driver);
 836                 return false;
 837         }
 838
 839         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 840         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 841         if (!visinfo)
 842         {
 843                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 844                 return false;
 845         }
 846
 847         if (fullscreen)
 848         {
 849                 if(vid_netwmfullscreen.integer)
 850                 {
 851                         // TODO detect WM support
 852                         vid_isnetwmfullscreen = true;
 853                         vid_isfullscreen = true;
 854                         // width and height will be filled in later
 855                         Con_DPrintf("Using NetWM fullscreen mode\n");
 856                 }
 857
 858                 if(!vid_isfullscreen && vidmode_ext)
 859                 {
 860                         int best_fit, best_dist, dist, x, y;
 861
 862                         // Are we going fullscreen?  If so, let's change video mode
 863                         XF86VidModeModeLine *current_vidmode;
 864                         XF86VidModeModeInfo **vidmodes;
 865                         int num_vidmodes;
 866
 867                         // This nice hack comes from the SDL source code
 868                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 869                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 870
 871                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 872                         best_dist = 0;
 873                         best_fit = -1;
 874
 875                         for (i = 0; i < num_vidmodes; i++)
 876                         {
 877                                 if (*width > vidmodes[i]->hdisplay || *height > vidmodes[i]->vdisplay)
 878                                         continue;
 879
 880                                 x = *width - vidmodes[i]->hdisplay;
 881                                 y = *height - vidmodes[i]->vdisplay;
 882                                 dist = (x * x) + (y * y);
 883                                 if (best_fit == -1 || dist < best_dist)
 884                                 {
 885                                         best_dist = dist;
 886                                         best_fit = i;
 887                                 }
 888                         }
 889
 890                         if (best_fit != -1)
 891                         {
 892                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 893                                 // to width/height =, so the window will take the full area of
 894                                 // the mode chosen
 895                                 *width = vidmodes[best_fit]->hdisplay;
 896                                 *height = vidmodes[best_fit]->vdisplay;
 897
 898                                 // change to the mode
 899                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 900                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 901                                 vid_isvidmodefullscreen = true;
 902                                 vid_isfullscreen = true;
 903
 904                                 // Move the viewport to top left
 905                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 906                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", *width, *height);
 907                         }
 908
 909                         free(vidmodes);
 910                 }
 911
 912                 if(!vid_isfullscreen)
 913                 {
 914                         // sorry, no FS available
 915                         // use the full desktop resolution
 916                         vid_isfullscreen = true;
 917                         // width and height will be filled in later
 918                         *width = DisplayWidth(vidx11_display, vidx11_screen);
 919                         *height = DisplayHeight(vidx11_display, vidx11_screen);
 920                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", *width, *height);
 921                 }
 922         }
 923
 924         // LordHavoc: save the visual for use in gamma ramp settings later
 925         vidx11_visual = visinfo->visual;
 926
 927         /* window attributes */
 928         attr.background_pixel = 0;
 929         attr.border_pixel = 0;
 930         // LordHavoc: save the colormap for later, too
 931         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 932         attr.event_mask = X_MASK;
 933
 934         if (fullscreen)
 935         {
 936                 if(vid_isnetwmfullscreen)
 937                 {
 938                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 939                         attr.backing_store = NotUseful;
 940                         attr.save_under = False;
 941                 }
 942                 else
 943                 {
 944                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 945                         attr.override_redirect = True;
 946                         attr.backing_store = NotUseful;
 947                         attr.save_under = False;
 948                         vid_isoverrideredirect = true; // so it knows to grab
 949                 }
 950         }
 951         else
 952         {
 953                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 954         }
 955
 956         win = XCreateWindow(vidx11_display, root, 0, 0, *width, *height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 957
 958         wmhints = XAllocWMHints();
 959         if(XpmCreatePixmapFromData(vidx11_display, win,
 960                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 961                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 962                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 963
 964         clshints = XAllocClassHint();
 965         clshints->res_name = strdup(gamename);
 966         clshints->res_class = strdup("DarkPlaces");
 967
 968         szhints = XAllocSizeHints();
 969         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
 970         {
 971                 szhints->min_width = szhints->max_width = *width;
 972                 szhints->min_height = szhints->max_height = *height;
 973                 szhints->flags |= PMinSize | PMaxSize;
 974         }
 975
 976         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 977         XFree(clshints);
 978         XFree(wmhints);
 979         XFree(szhints);
 980
 981         //XStoreName(vidx11_display, win, gamename);
 982         XMapWindow(vidx11_display, win);
 983
 984         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 985
 986         if (vid_isoverrideredirect)
 987         {
 988                 XMoveWindow(vidx11_display, win, 0, 0);
 989                 XRaiseWindow(vidx11_display, win);
 990                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 991                 XFlush(vidx11_display);
 992         }
 993
 994         if(vid_isvidmodefullscreen)
 995         {
 996                 // Move the viewport to top left
 997                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 998         }
 999
1000         //XSync(vidx11_display, False);
1001
1002         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1003         if (!ctx)
1004         {
1005                 Con_Printf ("glXCreateContext failed\n");
1006                 return false;
1007         }
1008
1009         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1010         {
1011                 Con_Printf ("glXMakeCurrent failed\n");
1012                 return false;
1013         }
1014
1015         XSync(vidx11_display, False);
1016
1017         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1018         {
1019                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1020                 return false;
1021         }
1022
1023         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1024         gl_platform = "GLX";
1025         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1026
1027         gl_videosyncavailable = false;
1028
1029 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1030 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1031 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1032         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1033 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1034 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1035 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1036         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1037
1038         vid_usingmousegrab = false;
1039         vid_usingmouse = false;
1040         vid_usinghidecursor = false;
1041         vid_usingvsync = false;
1042         vid_hidden = false;
1043         vid_activewindow = true;
1044         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1045 #if !defined(__APPLE__) && !defined(SUNOS)
1046         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1047         if (!vid_x11_dgasupported)
1048                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1049 #endif
1050
1051         GL_Init();
1052         return true;
1053 }
1054
1055 void Sys_SendKeyEvents(void)
1056 {
1057         static qboolean sound_active = true;
1058
1059         // enable/disable sound on focus gain/loss
1060         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1061         {
1062                 if (!sound_active)
1063                 {
1064                         S_UnblockSound ();
1065                         sound_active = true;
1066                 }
1067         }
1068         else
1069         {
1070                 if (sound_active)
1071                 {
1072                         S_BlockSound ();
1073                         sound_active = false;
1074                 }
1075         }
1076
1077         HandleEvents();
1078 }
1079
1080 void IN_Move (void)
1081 {
1082 }
1083
1084 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1085 {
1086         if(vidmode_ext)
1087         {
1088                 int i, bpp;
1089                 size_t k;
1090                 XF86VidModeModeInfo **vidmodes;
1091                 int num_vidmodes;
1092
1093                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1094                 k = 0;
1095                 for (i = 0; i < num_vidmodes; i++)
1096                 {
1097                         if(k >= maxcount)
1098                                 break;
1099                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1100                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1101                         {
1102                                 if(k >= maxcount)
1103                                         break;
1104                                 modes[k].width = vidmodes[i]->hdisplay;
1105                                 modes[k].height = vidmodes[i]->vdisplay;
1106                                 modes[k].bpp = 8;
1107                                 modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1108                                 modes[k].pixelheight_num = 1;
1109                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1110                                 ++k;
1111                         }
1112                 }
1113                 return k;
1114         }
1115         return 0; // FIXME implement this
1116 }