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_isnetwmfullscreen = false;
 118
 119 static Visual *vidx11_visual;
 120 static Colormap vidx11_colormap;
 121
 122 /*-----------------------------------------------------------------------*/
 123
 124 static int XLateKey(XKeyEvent *ev, char *ascii)
 125 {
 126         int key = 0;
 127         char buf[64];
 128         KeySym keysym, shifted;
 129
 130         keysym = XLookupKeysym (ev, 0);
 131         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 132         *ascii = buf[0];
 133
 134         switch(keysym)
 135         {
 136                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 137                 case XK_Page_Up:         key = K_PGUP; break;
 138
 139                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 140                 case XK_Page_Down:       key = K_PGDN; break;
 141
 142                 case XK_KP_Home: key = K_KP_HOME; break;
 143                 case XK_Home:    key = K_HOME; break;
 144
 145                 case XK_KP_End:  key = K_KP_END; break;
 146                 case XK_End:     key = K_END; break;
 147
 148                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 149                 case XK_Left:    key = K_LEFTARROW; break;
 150
 151                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 152                 case XK_Right:  key = K_RIGHTARROW;             break;
 153
 154                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 155                 case XK_Down:    key = K_DOWNARROW; break;
 156
 157                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 158                 case XK_Up:              key = K_UPARROW;        break;
 159
 160                 case XK_Escape: key = K_ESCAPE;         break;
 161
 162                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 163                 case XK_Return: key = K_ENTER;           break;
 164
 165                 case XK_Tab:            key = K_TAB;                     break;
 166
 167                 case XK_F1:              key = K_F1;                            break;
 168
 169                 case XK_F2:              key = K_F2;                            break;
 170
 171                 case XK_F3:              key = K_F3;                            break;
 172
 173                 case XK_F4:              key = K_F4;                            break;
 174
 175                 case XK_F5:              key = K_F5;                            break;
 176
 177                 case XK_F6:              key = K_F6;                            break;
 178
 179                 case XK_F7:              key = K_F7;                            break;
 180
 181                 case XK_F8:              key = K_F8;                            break;
 182
 183                 case XK_F9:              key = K_F9;                            break;
 184
 185                 case XK_F10:            key = K_F10;                     break;
 186
 187                 case XK_F11:            key = K_F11;                     break;
 188
 189                 case XK_F12:            key = K_F12;                     break;
 190
 191                 case XK_BackSpace: key = K_BACKSPACE; break;
 192
 193                 case XK_KP_Delete: key = K_KP_DEL; break;
 194                 case XK_Delete: key = K_DEL; break;
 195
 196                 case XK_Pause:  key = K_PAUSE;           break;
 197
 198                 case XK_Shift_L:
 199                 case XK_Shift_R:        key = K_SHIFT;          break;
 200
 201                 case XK_Execute:
 202                 case XK_Control_L:
 203                 case XK_Control_R:      key = K_CTRL;            break;
 204
 205                 case XK_Alt_L:
 206                 case XK_Meta_L:
 207                 case XK_ISO_Level3_Shift:
 208                 case XK_Alt_R:
 209                 case XK_Meta_R: key = K_ALT;                    break;
 210
 211                 case XK_KP_Begin: key = K_KP_5; break;
 212
 213                 case XK_Insert:key = K_INS; break;
 214                 case XK_KP_Insert: key = K_KP_INS; break;
 215
 216                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 217                 case XK_KP_Add:  key = K_KP_PLUS; break;
 218                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 219                 case XK_KP_Divide: key = K_KP_SLASH; break;
 220
 221                 case XK_section:        key = '~'; break;
 222
 223                 default:
 224                         if (keysym < 32)
 225                                 break;
 226
 227                         if (keysym >= 'A' && keysym <= 'Z')
 228                                 key = keysym - 'A' + 'a';
 229                         else
 230                                 key = keysym;
 231
 232                         break;
 233         }
 234
 235         return key;
 236 }
 237
 238 static Cursor CreateNullCursor(Display *display, Window root)
 239 {
 240         Pixmap cursormask;
 241         XGCValues xgc;
 242         GC gc;
 243         XColor dummycolour;
 244         Cursor cursor;
 245
 246         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 247         xgc.function = GXclear;
 248         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 249         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 250         dummycolour.pixel = 0;
 251         dummycolour.red = 0;
 252         dummycolour.flags = 04;
 253         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 254         XFreePixmap(display,cursormask);
 255         XFreeGC(display,gc);
 256         return cursor;
 257 }
 258
 259 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 260 {
 261         static int originalmouseparms_num;
 262         static int originalmouseparms_denom;
 263         static int originalmouseparms_threshold;
 264         static qboolean restore_spi;
 265
 266 #if !defined(__APPLE__) && !defined(SUNOS)
 267         qboolean usedgamouse;
 268 #endif
 269
 270         if (!vidx11_display || !win)
 271                 return;
 272
 273         if (relative)
 274                 fullscreengrab = true;
 275
 276         if (!mouse_avail)
 277                 fullscreengrab = relative = hidecursor = false;
 278
 279 #if !defined(__APPLE__) && !defined(SUNOS)
 280         usedgamouse = relative && vid_dgamouse.integer;
 281         if (!vid_x11_dgasupported)
 282                 usedgamouse = false;
 283         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 284                 VID_SetMouse(false, false, false); // ungrab first!
 285 #endif
 286
 287         if (vid_usingmousegrab != fullscreengrab)
 288         {
 289                 vid_usingmousegrab = fullscreengrab;
 290                 cl_ignoremousemoves = 2;
 291                 if (fullscreengrab)
 292                 {
 293                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 294                         if (vid_grabkeyboard.integer || (vid_isfullscreen && !vid_isnetwmfullscreen))
 295                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 296                 }
 297                 else
 298                 {
 299                         XUngrabPointer(vidx11_display, CurrentTime);
 300                         XUngrabKeyboard(vidx11_display, CurrentTime);
 301                 }
 302         }
 303
 304         if (relative)
 305         {
 306                 if (!vid_usingmouse)
 307                 {
 308                         XWindowAttributes attribs_1;
 309                         XSetWindowAttributes attribs_2;
 310
 311                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 312                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 313                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 314
 315 #if !defined(__APPLE__) && !defined(SUNOS)
 316                         vid_usingdgamouse = usedgamouse;
 317                         if (usedgamouse)
 318                         {
 319                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 320                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 321                         }
 322                         else
 323 #endif
 324                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 325
 326 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 327 #if !defined(__APPLE__) && !defined(SUNOS)
 328                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 329 #else
 330                         if (!COM_CheckParm ("-noforcemparms"))
 331 #endif
 332                         {
 333                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 334                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 335                                 restore_spi = true;
 336                         }
 337                         else
 338                                 restore_spi = false;
 339
 340                         cl_ignoremousemoves = 2;
 341                         vid_usingmouse = true;
 342                 }
 343         }
 344         else
 345         {
 346                 if (vid_usingmouse)
 347                 {
 348 #if !defined(__APPLE__) && !defined(SUNOS)
 349                         if (vid_usingdgamouse)
 350                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 351                         vid_usingdgamouse = false;
 352 #endif
 353                         cl_ignoremousemoves = 2;
 354
 355                         if (restore_spi)
 356                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 357                         restore_spi = false;
 358
 359                         vid_usingmouse = false;
 360                 }
 361         }
 362
 363         if (vid_usinghidecursor != hidecursor)
 364         {
 365                 vid_usinghidecursor = hidecursor;
 366                 if (hidecursor)
 367                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 368                 else
 369                         XUndefineCursor(vidx11_display, win);
 370         }
 371 }
 372
 373 static keynum_t buttonremap[18] =
 374 {
 375         K_MOUSE1,
 376         K_MOUSE3,
 377         K_MOUSE2,
 378         K_MWHEELUP,
 379         K_MWHEELDOWN,
 380         K_MOUSE4,
 381         K_MOUSE5,
 382         K_MOUSE6,
 383         K_MOUSE7,
 384         K_MOUSE8,
 385         K_MOUSE9,
 386         K_MOUSE10,
 387         K_MOUSE11,
 388         K_MOUSE12,
 389         K_MOUSE13,
 390         K_MOUSE14,
 391         K_MOUSE15,
 392         K_MOUSE16,
 393 };
 394
 395 static void HandleEvents(void)
 396 {
 397         XEvent event;
 398         int key;
 399         char ascii;
 400         qboolean dowarp = false;
 401
 402         if (!vidx11_display)
 403                 return;
 404
 405         while (XPending(vidx11_display))
 406         {
 407                 XNextEvent(vidx11_display, &event);
 408
 409                 switch (event.type)
 410                 {
 411                 case KeyPress:
 412                         // key pressed
 413                         key = XLateKey (&event.xkey, &ascii);
 414                         Key_Event(key, ascii, true);
 415                         break;
 416
 417                 case KeyRelease:
 418                         // key released
 419                         key = XLateKey (&event.xkey, &ascii);
 420                         Key_Event(key, ascii, false);
 421                         break;
 422
 423                 case MotionNotify:
 424                         // mouse moved
 425                         if (vid_usingmouse)
 426                         {
 427 #if !defined(__APPLE__) && !defined(SUNOS)
 428                                 if (vid_usingdgamouse)
 429                                 {
 430                                         in_mouse_x += event.xmotion.x_root;
 431                                         in_mouse_y += event.xmotion.y_root;
 432                                 }
 433                                 else
 434 #endif
 435                                 {
 436                                         if (!event.xmotion.send_event)
 437                                         {
 438                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 439                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 440                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 441                                                 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)
 442                                                         dowarp = true;
 443                                         }
 444                                 }
 445                         }
 446                         in_windowmouse_x = event.xmotion.x;
 447                         in_windowmouse_y = event.xmotion.y;
 448                         break;
 449
 450                 case ButtonPress:
 451                         // mouse button pressed
 452                         if (event.xbutton.button <= 18)
 453                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 454                         else
 455                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 456                         break;
 457
 458                 case ButtonRelease:
 459                         // mouse button released
 460                         if (event.xbutton.button <= 18)
 461                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 462                         else
 463                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 464                         break;
 465
 466                 case CreateNotify:
 467                         // window created
 468                         win_x = event.xcreatewindow.x;
 469                         win_y = event.xcreatewindow.y;
 470                         break;
 471
 472                 case ConfigureNotify:
 473                         // window changed size/location
 474                         win_x = event.xconfigure.x;
 475                         win_y = event.xconfigure.y;
 476                         if(vid_resizable.integer < 2)
 477                         {
 478                                 vid.width = event.xconfigure.width;
 479                                 vid.height = event.xconfigure.height;
 480                         }
 481                         break;
 482                 case DestroyNotify:
 483                         // window has been destroyed
 484                         Sys_Quit(0);
 485                         break;
 486                 case ClientMessage:
 487                         // window manager messages
 488                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 489                                 Sys_Quit(0);
 490                         break;
 491                 case MapNotify:
 492                         if (vid_isfullscreen && !vid_isnetwmfullscreen)
 493                                 break;
 494                         // window restored
 495                         vid_hidden = false;
 496                         VID_RestoreSystemGamma();
 497
 498                         if(vid_isfullscreen)
 499                         {
 500                                 // set our video mode
 501                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 502
 503                                 // Move the viewport to top left
 504                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 505
 506                                 // make sure it's fullscreen
 507                                 XEvent event;
 508                                 event.type = ClientMessage;
 509                                 event.xclient.serial = 0;
 510                                 event.xclient.send_event = True;
 511                                 event.xclient.message_type = net_wm_state_atom;
 512                                 event.xclient.window = win;
 513                                 event.xclient.format = 32;
 514                                 event.xclient.data.l[0] = 1;
 515                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 516                                 event.xclient.data.l[2] = 0;
 517                                 event.xclient.data.l[3] = 1;
 518                                 event.xclient.data.l[4] = 0;
 519                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 520
 521                                 dowarp = true;
 522                         }
 523
 524                         break;
 525                 case UnmapNotify:
 526                         if (vid_isfullscreen && !vid_isnetwmfullscreen)
 527                                 break;
 528                         // window iconified/rolledup/whatever
 529                         vid_hidden = true;
 530                         VID_RestoreSystemGamma();
 531
 532                         if(vid_isfullscreen)
 533                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 534
 535                         break;
 536                 case FocusIn:
 537                         if (vid_isfullscreen && !vid_isnetwmfullscreen)
 538                                 break;
 539                         // window is now the input focus
 540                         vid_activewindow = true;
 541                         break;
 542                 case FocusOut:
 543                         if (vid_isfullscreen && !vid_isnetwmfullscreen)
 544                                 break;
 545
 546                         if(vid_isfullscreen & event.xfocus.mode == NotifyNormal)
 547                         {
 548                                 // iconify netwm fullscreen window when it loses focus
 549                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 550                                 XEvent event;
 551                                 event.type = ClientMessage;
 552                                 event.xclient.serial = 0;
 553                                 event.xclient.send_event = True;
 554                                 event.xclient.message_type = net_wm_state_atom;
 555                                 event.xclient.window = win;
 556                                 event.xclient.format = 32;
 557                                 event.xclient.data.l[0] = 1;
 558                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 559                                 event.xclient.data.l[2] = 0;
 560                                 event.xclient.data.l[3] = 1;
 561                                 event.xclient.data.l[4] = 0;
 562                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 563                         }
 564
 565                         // window is no longer the input focus
 566                         vid_activewindow = false;
 567                         VID_RestoreSystemGamma();
 568
 569                         break;
 570                 case EnterNotify:
 571                         // mouse entered window
 572                         break;
 573                 case LeaveNotify:
 574                         // mouse left window
 575                         break;
 576                 }
 577         }
 578
 579         if (dowarp)
 580         {
 581                 /* move the mouse to the window center again */
 582                 // we'll catch the warp motion by its send_event flag, updating the
 583                 // stored mouse position without adding any delta motion
 584                 XEvent event;
 585                 event.type = MotionNotify;
 586                 event.xmotion.display = vidx11_display;
 587                 event.xmotion.window = win;
 588                 event.xmotion.x = vid.width / 2;
 589                 event.xmotion.y = vid.height / 2;
 590                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 591                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 592         }
 593 }
 594
 595 static void *prjobj = NULL;
 596
 597 static void GL_CloseLibrary(void)
 598 {
 599         if (prjobj)
 600                 dlclose(prjobj);
 601         prjobj = NULL;
 602         gl_driver[0] = 0;
 603         qglXGetProcAddressARB = NULL;
 604         gl_extensions = "";
 605         gl_platform = "";
 606         gl_platformextensions = "";
 607 }
 608
 609 static int GL_OpenLibrary(const char *name)
 610 {
 611         Con_Printf("Loading OpenGL driver %s\n", name);
 612         GL_CloseLibrary();
 613         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 614         {
 615                 Con_Printf("Unable to open symbol list for %s\n", name);
 616                 return false;
 617         }
 618         strlcpy(gl_driver, name, sizeof(gl_driver));
 619         return true;
 620 }
 621
 622 void *GL_GetProcAddress(const char *name)
 623 {
 624         void *p = NULL;
 625         if (qglXGetProcAddressARB != NULL)
 626                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 627         if (p == NULL)
 628                 p = (void *) dlsym(prjobj, name);
 629         return p;
 630 }
 631
 632 void VID_Shutdown(void)
 633 {
 634         if (!ctx || !vidx11_display)
 635                 return;
 636
 637         VID_SetMouse(false, false, false);
 638         VID_RestoreSystemGamma();
 639
 640         // FIXME: glXDestroyContext here?
 641         if (vid_isfullscreen)
 642                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 643         if (win)
 644                 XDestroyWindow(vidx11_display, win);
 645         XCloseDisplay(vidx11_display);
 646
 647         vid_hidden = true;
 648         vid_isfullscreen = false;
 649         vid_isnetwmfullscreen = false;
 650         vidx11_display = NULL;
 651         win = 0;
 652         ctx = NULL;
 653
 654         GL_CloseLibrary();
 655         Key_ClearStates ();
 656 }
 657
 658 void signal_handler(int sig)
 659 {
 660         Con_Printf("Received signal %d, exiting...\n", sig);
 661         VID_RestoreSystemGamma();
 662         Sys_Quit(1);
 663 }
 664
 665 void InitSig(void)
 666 {
 667         signal(SIGHUP, signal_handler);
 668         signal(SIGINT, signal_handler);
 669         signal(SIGQUIT, signal_handler);
 670         signal(SIGILL, signal_handler);
 671         signal(SIGTRAP, signal_handler);
 672         signal(SIGIOT, signal_handler);
 673         signal(SIGBUS, signal_handler);
 674         signal(SIGFPE, signal_handler);
 675         signal(SIGSEGV, signal_handler);
 676         signal(SIGTERM, signal_handler);
 677 }
 678
 679 void VID_Finish (void)
 680 {
 681         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 682         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 683         {
 684                 vid_usingvsync = vid_usevsync;
 685                 if (qglXSwapIntervalSGI (vid_usevsync))
 686                         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");
 687         }
 688
 689         if (r_render.integer)
 690         {
 691                 CHECKGLERROR
 692                 if (r_speeds.integer || gl_finish.integer)
 693                 {
 694                         qglFinish();CHECKGLERROR
 695                 }
 696                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 697         }
 698
 699         if (vid_x11_hardwaregammasupported)
 700                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 701 }
 702
 703 int VID_SetGamma(unsigned short *ramps, int rampsize)
 704 {
 705         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 706 }
 707
 708 int VID_GetGamma(unsigned short *ramps, int rampsize)
 709 {
 710         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 711 }
 712
 713 void VID_Init(void)
 714 {
 715 #if !defined(__APPLE__) && !defined(SUNOS)
 716         Cvar_RegisterVariable (&vid_dgamouse);
 717 #endif
 718         Cvar_RegisterVariable (&vid_netwmfullscreen);
 719         InitSig(); // trap evil signals
 720 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 721         if (COM_CheckParm ("-nomouse"))
 722                 mouse_avail = false;
 723 }
 724
 725 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 726 {
 727         *attrib++ = GLX_RGBA;
 728         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 729         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 730         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 731         *attrib++ = GLX_DOUBLEBUFFER;
 732         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 733         // if stencil is enabled, ask for alpha too
 734         if (stencil)
 735         {
 736                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 737                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 738         }
 739         if (stereobuffer)
 740                 *attrib++ = GLX_STEREO;
 741         if (samples > 1)
 742         {
 743                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 744                 *attrib++ = 1;
 745                 *attrib++ = GLX_SAMPLES_ARB;
 746                 *attrib++ = samples;
 747         }
 748         *attrib++ = None;
 749 }
 750
 751 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 752 {
 753         int i;
 754         int attrib[32];
 755         XSetWindowAttributes attr;
 756         XClassHint *clshints;
 757         XWMHints *wmhints;
 758         XSizeHints *szhints;
 759         unsigned long mask;
 760         XVisualInfo *visinfo;
 761         int MajorVersion, MinorVersion;
 762         const char *drivername;
 763
 764 #if defined(__APPLE__) && defined(__MACH__)
 765         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 766 #else
 767         drivername = "libGL.so.1";
 768 #endif
 769 // 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
 770 // 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
 771 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 772         i = COM_CheckParm("-gl_driver");
 773         if (i && i < com_argc - 1)
 774                 drivername = com_argv[i + 1];
 775         if (!GL_OpenLibrary(drivername))
 776         {
 777                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 778                 return false;
 779         }
 780
 781         if (!(vidx11_display = XOpenDisplay(NULL)))
 782         {
 783                 Con_Print("Couldn't open the X display\n");
 784                 return false;
 785         }
 786
 787         // LordHavoc: making the close button on a window do the right thing
 788         // seems to involve this mess, sigh...
 789         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 790         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 791         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 792         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 793
 794         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 795         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 796
 797         vidx11_screen = DefaultScreen(vidx11_display);
 798         root = RootWindow(vidx11_display, vidx11_screen);
 799
 800         // Get video mode list
 801         MajorVersion = MinorVersion = 0;
 802         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 803                 vidmode_ext = false;
 804         else
 805         {
 806                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 807                 vidmode_ext = true;
 808         }
 809
 810         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 811          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 812          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 813          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 814          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 815          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 816         {
 817                 Con_Printf("glX functions not found in %s\n", gl_driver);
 818                 return false;
 819         }
 820
 821         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 822         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 823         if (!visinfo)
 824         {
 825                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 826                 return false;
 827         }
 828
 829         if (vidmode_ext)
 830         {
 831                 int best_fit, best_dist, dist, x, y;
 832
 833                 // Are we going fullscreen?  If so, let's change video mode
 834                 if (fullscreen)
 835                 {
 836                         XF86VidModeModeLine *current_vidmode;
 837                         XF86VidModeModeInfo **vidmodes;
 838                         int num_vidmodes;
 839
 840                         // This nice hack comes from the SDL source code
 841                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 842                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 843
 844                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 845                         best_dist = 0;
 846                         best_fit = -1;
 847
 848                         for (i = 0; i < num_vidmodes; i++)
 849                         {
 850                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 851                                         continue;
 852
 853                                 x = width - vidmodes[i]->hdisplay;
 854                                 y = height - vidmodes[i]->vdisplay;
 855                                 dist = (x * x) + (y * y);
 856                                 if (best_fit == -1 || dist < best_dist)
 857                                 {
 858                                         best_dist = dist;
 859                                         best_fit = i;
 860                                 }
 861                         }
 862
 863                         if (best_fit != -1)
 864                         {
 865                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 866                                 // to width/height =, so the window will take the full area of
 867                                 // the mode chosen
 868                                 width = vidmodes[best_fit]->hdisplay;
 869                                 height = vidmodes[best_fit]->vdisplay;
 870
 871                                 // change to the mode
 872                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 873                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 874                                 vid_isfullscreen = true;
 875
 876                                 // Move the viewport to top left
 877                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 878                         }
 879                         else
 880                                 fullscreen = 0;
 881
 882                         free(vidmodes);
 883                 }
 884         }
 885
 886         // LordHavoc: save the visual for use in gamma ramp settings later
 887         vidx11_visual = visinfo->visual;
 888
 889         /* window attributes */
 890         attr.background_pixel = 0;
 891         attr.border_pixel = 0;
 892         // LordHavoc: save the colormap for later, too
 893         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 894         attr.event_mask = X_MASK;
 895
 896         if (vid_isfullscreen)
 897         {
 898                 if(vid_netwmfullscreen.integer)
 899                 {
 900                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 901                         attr.backing_store = NotUseful;
 902                         attr.save_under = False;
 903                         vid_isnetwmfullscreen = true;
 904                 }
 905                 else
 906                 {
 907                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 908                         attr.override_redirect = True;
 909                         attr.backing_store = NotUseful;
 910                         attr.save_under = False;
 911                         vid_isnetwmfullscreen = false;
 912                 }
 913         }
 914         else
 915         {
 916                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 917                 vid_isnetwmfullscreen = false;
 918         }
 919
 920         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 921
 922         wmhints = XAllocWMHints();
 923         if(XpmCreatePixmapFromData(vidx11_display, win,
 924                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 925                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 926                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 927
 928         clshints = XAllocClassHint();
 929         clshints->res_name = strdup(gamename);
 930         clshints->res_class = strdup("DarkPlaces");
 931
 932         szhints = XAllocSizeHints();
 933         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
 934         {
 935                 szhints->min_width = szhints->max_width = width;
 936                 szhints->min_height = szhints->max_height = height;
 937                 szhints->flags |= PMinSize | PMaxSize;
 938         }
 939
 940         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 941         XFree(clshints);
 942         XFree(wmhints);
 943         XFree(szhints);
 944
 945         //XStoreName(vidx11_display, win, gamename);
 946         XMapWindow(vidx11_display, win);
 947
 948         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 949
 950         if (vid_isfullscreen && !vid_isnetwmfullscreen)
 951         {
 952                 XMoveWindow(vidx11_display, win, 0, 0);
 953                 XRaiseWindow(vidx11_display, win);
 954                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 955                 XFlush(vidx11_display);
 956                 // Move the viewport to top left
 957                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 958         }
 959
 960         //XSync(vidx11_display, False);
 961
 962         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 963         if (!ctx)
 964         {
 965                 Con_Printf ("glXCreateContext failed\n");
 966                 return false;
 967         }
 968
 969         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 970         {
 971                 Con_Printf ("glXMakeCurrent failed\n");
 972                 return false;
 973         }
 974
 975         XSync(vidx11_display, False);
 976
 977         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 978         {
 979                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 980                 return false;
 981         }
 982
 983         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 984         gl_platform = "GLX";
 985         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 986
 987         gl_videosyncavailable = false;
 988
 989 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 990 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 991 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 992         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 993 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 994 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 995 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 996         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 997
 998         vid_usingmousegrab = false;
 999         vid_usingmouse = false;
1000         vid_usinghidecursor = false;
1001         vid_usingvsync = false;
1002         vid_hidden = false;
1003         vid_activewindow = true;
1004         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1005 #if !defined(__APPLE__) && !defined(SUNOS)
1006         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1007         if (!vid_x11_dgasupported)
1008                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1009 #endif
1010         GL_Init();
1011         return true;
1012 }
1013
1014 void Sys_SendKeyEvents(void)
1015 {
1016         static qboolean sound_active = true;
1017
1018         // enable/disable sound on focus gain/loss
1019         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
1020         {
1021                 if (!sound_active)
1022                 {
1023                         S_UnblockSound ();
1024                         sound_active = true;
1025                 }
1026         }
1027         else
1028         {
1029                 if (sound_active)
1030                 {
1031                         S_BlockSound ();
1032                         sound_active = false;
1033                 }
1034         }
1035
1036         HandleEvents();
1037 }
1038
1039 void IN_Move (void)
1040 {
1041 }