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 // get the Uchar type
  43 #include "utf8lib.h"
  44
  45 #include "nexuiz.xpm"
  46 #include "darkplaces.xpm"
  47
  48 // Tell startup code that we have a client
  49 int cl_available = true;
  50
  51 // note: if we used the XRandR extension we could support refresh rates
  52 qboolean vid_supportrefreshrate = false;
  53
  54 //GLX prototypes
  55 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  56 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  57 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  58 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  59 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  60 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  61
  62 //GLX_ARB_get_proc_address
  63 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  64
  65 static dllfunction_t getprocaddressfuncs[] =
  66 {
  67         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  68         {NULL, NULL}
  69 };
  70
  71 //GLX_SGI_swap_control
  72 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  73
  74 static dllfunction_t swapcontrolfuncs[] =
  75 {
  76         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  77         {NULL, NULL}
  78 };
  79
  80 static Display *vidx11_display = NULL;
  81 static int vidx11_screen;
  82 static Window win, root;
  83 static GLXContext ctx = NULL;
  84
  85 Atom wm_delete_window_atom;
  86 Atom net_wm_state_atom;
  87 Atom net_wm_state_hidden_atom;
  88 Atom net_wm_state_fullscreen_atom;
  89
  90 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  91 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  92                     PointerMotionMask | ButtonMotionMask)
  93 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  94                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  95                 LeaveWindowMask)
  96
  97
  98 static qboolean mouse_avail = true;
  99 static qboolean vid_usingmousegrab = false;
 100 static qboolean vid_usingmouse = false;
 101 static qboolean vid_usinghidecursor = false;
 102 static qboolean vid_usingvsync = false;
 103 static qboolean vid_usevsync = false;
 104 static qboolean vid_x11_hardwaregammasupported = false;
 105 static qboolean vid_x11_dgasupported = false;
 106 static int vid_x11_gammarampsize = 0;
 107
 108 #if !defined(__APPLE__) && !defined(SUNOS)
 109 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "0", "make use of DGA mouse input"};
 110 static qboolean vid_usingdgamouse = false;
 111 #endif
 112 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"};
 113
 114 qboolean vidmode_ext = false;
 115
 116 static int win_x, win_y;
 117
 118 static XF86VidModeModeInfo init_vidmode, game_vidmode;
 119 static qboolean vid_isfullscreen = false;
 120 static qboolean vid_isvidmodefullscreen = false;
 121 static qboolean vid_isnetwmfullscreen = false;
 122 static qboolean vid_isoverrideredirect = false;
 123
 124 static Visual *vidx11_visual;
 125 static Colormap vidx11_colormap;
 126
 127 /*-----------------------------------------------------------------------*/
 128 //
 129
 130 long keysym2ucs(KeySym keysym);
 131 void DP_Xutf8LookupString(XKeyEvent * ev,
 132                          Uchar *uch,
 133                          KeySym * keysym_return,
 134                          Status * status_return)
 135 {
 136         int rc;
 137         KeySym keysym;
 138         int codepoint;
 139         char buffer[64];
 140         int nbytes = sizeof(buffer);
 141
 142         rc = XLookupString(ev, buffer, nbytes, &keysym, NULL);
 143
 144         if (rc > 0) {
 145                 codepoint = buffer[0] & 0xFF;
 146         } else {
 147                 codepoint = keysym2ucs(keysym);
 148         }
 149
 150         if (codepoint < 0) {
 151                 if (keysym == None) {
 152                         *status_return = XLookupNone;
 153                 } else {
 154                         *status_return = XLookupKeySym;
 155                         *keysym_return = keysym;
 156                 }
 157                 return;
 158         }
 159
 160         *uch = codepoint;
 161
 162         if (keysym != None) {
 163                 *keysym_return = keysym;
 164                 *status_return = XLookupBoth;
 165         } else {
 166                 *status_return = XLookupChars;
 167         }
 168 }
 169 static int XLateKey(XKeyEvent *ev, Uchar *ascii)
 170 {
 171         int key = 0;
 172         //char buf[64];
 173         KeySym keysym, shifted;
 174         Status status;
 175
 176         keysym = XLookupKeysym (ev, 0);
 177         DP_Xutf8LookupString(ev, ascii, &shifted, &status);
 178
 179         switch(keysym)
 180         {
 181                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 182                 case XK_Page_Up:         key = K_PGUP; break;
 183
 184                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 185                 case XK_Page_Down:       key = K_PGDN; break;
 186
 187                 case XK_KP_Home: key = K_KP_HOME; break;
 188                 case XK_Home:    key = K_HOME; break;
 189
 190                 case XK_KP_End:  key = K_KP_END; break;
 191                 case XK_End:     key = K_END; break;
 192
 193                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 194                 case XK_Left:    key = K_LEFTARROW; break;
 195
 196                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 197                 case XK_Right:  key = K_RIGHTARROW;             break;
 198
 199                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 200                 case XK_Down:    key = K_DOWNARROW; break;
 201
 202                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 203                 case XK_Up:              key = K_UPARROW;        break;
 204
 205                 case XK_Escape: key = K_ESCAPE;         break;
 206
 207                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 208                 case XK_Return: key = K_ENTER;           break;
 209
 210                 case XK_Tab:            key = K_TAB;                     break;
 211
 212                 case XK_F1:              key = K_F1;                            break;
 213
 214                 case XK_F2:              key = K_F2;                            break;
 215
 216                 case XK_F3:              key = K_F3;                            break;
 217
 218                 case XK_F4:              key = K_F4;                            break;
 219
 220                 case XK_F5:              key = K_F5;                            break;
 221
 222                 case XK_F6:              key = K_F6;                            break;
 223
 224                 case XK_F7:              key = K_F7;                            break;
 225
 226                 case XK_F8:              key = K_F8;                            break;
 227
 228                 case XK_F9:              key = K_F9;                            break;
 229
 230                 case XK_F10:            key = K_F10;                     break;
 231
 232                 case XK_F11:            key = K_F11;                     break;
 233
 234                 case XK_F12:            key = K_F12;                     break;
 235
 236                 case XK_BackSpace: key = K_BACKSPACE; break;
 237
 238                 case XK_KP_Delete: key = K_KP_DEL; break;
 239                 case XK_Delete: key = K_DEL; break;
 240
 241                 case XK_Pause:  key = K_PAUSE;           break;
 242
 243                 case XK_Shift_L:
 244                 case XK_Shift_R:        key = K_SHIFT;          break;
 245
 246                 case XK_Execute:
 247                 case XK_Control_L:
 248                 case XK_Control_R:      key = K_CTRL;            break;
 249
 250                 case XK_Alt_L:
 251                 case XK_Meta_L:
 252                 case XK_ISO_Level3_Shift:
 253                 case XK_Alt_R:
 254                 case XK_Meta_R: key = K_ALT;                    break;
 255
 256                 case XK_KP_Begin: key = K_KP_5; break;
 257
 258                 case XK_Insert:key = K_INS; break;
 259                 case XK_KP_Insert: key = K_KP_INS; break;
 260
 261                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 262                 case XK_KP_Add:  key = K_KP_PLUS; break;
 263                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 264                 case XK_KP_Divide: key = K_KP_SLASH; break;
 265
 266                 case XK_section:        key = '~'; break;
 267
 268                 default:
 269                         if (keysym < 32)
 270                                 break;
 271
 272                         if (keysym >= 'A' && keysym <= 'Z')
 273                                 key = keysym - 'A' + 'a';
 274                         else
 275                                 key = keysym;
 276
 277                         break;
 278         }
 279
 280         return key;
 281 }
 282
 283 static Cursor CreateNullCursor(Display *display, Window root)
 284 {
 285         Pixmap cursormask;
 286         XGCValues xgc;
 287         GC gc;
 288         XColor dummycolour;
 289         Cursor cursor;
 290
 291         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 292         xgc.function = GXclear;
 293         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 294         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 295         dummycolour.pixel = 0;
 296         dummycolour.red = 0;
 297         dummycolour.flags = 04;
 298         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 299         XFreePixmap(display,cursormask);
 300         XFreeGC(display,gc);
 301         return cursor;
 302 }
 303
 304 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 305 {
 306         static int originalmouseparms_num;
 307         static int originalmouseparms_denom;
 308         static int originalmouseparms_threshold;
 309         static qboolean restore_spi;
 310
 311 #if !defined(__APPLE__) && !defined(SUNOS)
 312         qboolean usedgamouse;
 313 #endif
 314
 315         if (!vidx11_display || !win)
 316                 return;
 317
 318         if (relative)
 319                 fullscreengrab = true;
 320
 321         if (!mouse_avail)
 322                 fullscreengrab = relative = hidecursor = false;
 323
 324 #if !defined(__APPLE__) && !defined(SUNOS)
 325         usedgamouse = relative && vid_dgamouse.integer;
 326         if (!vid_x11_dgasupported)
 327                 usedgamouse = false;
 328         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 329                 VID_SetMouse(false, false, false); // ungrab first!
 330 #endif
 331
 332         if (vid_usingmousegrab != fullscreengrab)
 333         {
 334                 vid_usingmousegrab = fullscreengrab;
 335                 cl_ignoremousemoves = 2;
 336                 if (fullscreengrab)
 337                 {
 338                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 339                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 340                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 341                 }
 342                 else
 343                 {
 344                         XUngrabPointer(vidx11_display, CurrentTime);
 345                         XUngrabKeyboard(vidx11_display, CurrentTime);
 346                 }
 347         }
 348
 349         if (relative)
 350         {
 351                 if (!vid_usingmouse)
 352                 {
 353                         XWindowAttributes attribs_1;
 354                         XSetWindowAttributes attribs_2;
 355
 356                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 357                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 358                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 359
 360 #if !defined(__APPLE__) && !defined(SUNOS)
 361                         vid_usingdgamouse = usedgamouse;
 362                         if (usedgamouse)
 363                         {
 364                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 365                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 366                         }
 367                         else
 368 #endif
 369                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 370
 371 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 372 #if !defined(__APPLE__) && !defined(SUNOS)
 373                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 374 #else
 375                         if (!COM_CheckParm ("-noforcemparms"))
 376 #endif
 377                         {
 378                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 379                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 380                                 restore_spi = true;
 381                         }
 382                         else
 383                                 restore_spi = false;
 384
 385                         cl_ignoremousemoves = 2;
 386                         vid_usingmouse = true;
 387                 }
 388         }
 389         else
 390         {
 391                 if (vid_usingmouse)
 392                 {
 393 #if !defined(__APPLE__) && !defined(SUNOS)
 394                         if (vid_usingdgamouse)
 395                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 396                         vid_usingdgamouse = false;
 397 #endif
 398                         cl_ignoremousemoves = 2;
 399
 400                         if (restore_spi)
 401                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 402                         restore_spi = false;
 403
 404                         vid_usingmouse = false;
 405                 }
 406         }
 407
 408         if (vid_usinghidecursor != hidecursor)
 409         {
 410                 vid_usinghidecursor = hidecursor;
 411                 if (hidecursor)
 412                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 413                 else
 414                         XUndefineCursor(vidx11_display, win);
 415         }
 416 }
 417
 418 static keynum_t buttonremap[18] =
 419 {
 420         K_MOUSE1,
 421         K_MOUSE3,
 422         K_MOUSE2,
 423         K_MWHEELUP,
 424         K_MWHEELDOWN,
 425         K_MOUSE4,
 426         K_MOUSE5,
 427         K_MOUSE6,
 428         K_MOUSE7,
 429         K_MOUSE8,
 430         K_MOUSE9,
 431         K_MOUSE10,
 432         K_MOUSE11,
 433         K_MOUSE12,
 434         K_MOUSE13,
 435         K_MOUSE14,
 436         K_MOUSE15,
 437         K_MOUSE16,
 438 };
 439
 440 static void HandleEvents(void)
 441 {
 442         XEvent event;
 443         int key;
 444         Uchar unicode;
 445         qboolean dowarp = false;
 446
 447         if (!vidx11_display)
 448                 return;
 449
 450         while (XPending(vidx11_display))
 451         {
 452                 XNextEvent(vidx11_display, &event);
 453
 454                 switch (event.type)
 455                 {
 456                 case KeyPress:
 457                         // key pressed
 458                         key = XLateKey (&event.xkey, &unicode);
 459                         Key_Event(key, unicode, true);
 460                         break;
 461
 462                 case KeyRelease:
 463                         // key released
 464                         key = XLateKey (&event.xkey, &unicode);
 465                         Key_Event(key, unicode, false);
 466                         break;
 467
 468                 case MotionNotify:
 469                         // mouse moved
 470                         if (vid_usingmouse)
 471                         {
 472 #if !defined(__APPLE__) && !defined(SUNOS)
 473                                 if (vid_usingdgamouse)
 474                                 {
 475                                         in_mouse_x += event.xmotion.x_root;
 476                                         in_mouse_y += event.xmotion.y_root;
 477                                 }
 478                                 else
 479 #endif
 480                                 {
 481                                         if (!event.xmotion.send_event)
 482                                         {
 483                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 484                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 485                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 486                                                 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)
 487                                                         dowarp = true;
 488                                         }
 489                                 }
 490                         }
 491                         in_windowmouse_x = event.xmotion.x;
 492                         in_windowmouse_y = event.xmotion.y;
 493                         break;
 494
 495                 case ButtonPress:
 496                         // mouse button pressed
 497                         if (event.xbutton.button <= 18)
 498                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 499                         else
 500                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 501                         break;
 502
 503                 case ButtonRelease:
 504                         // mouse button released
 505                         if (event.xbutton.button <= 18)
 506                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 507                         else
 508                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 509                         break;
 510
 511                 case CreateNotify:
 512                         // window created
 513                         win_x = event.xcreatewindow.x;
 514                         win_y = event.xcreatewindow.y;
 515                         break;
 516
 517                 case ConfigureNotify:
 518                         // window changed size/location
 519                         win_x = event.xconfigure.x;
 520                         win_y = event.xconfigure.y;
 521                         if(vid_resizable.integer < 2 || vid_isnetwmfullscreen)
 522                         {
 523                                 vid.width = event.xconfigure.width;
 524                                 vid.height = event.xconfigure.height;
 525                                 if(vid_isnetwmfullscreen)
 526                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 527                                 else
 528                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 529                         }
 530                         break;
 531                 case DestroyNotify:
 532                         // window has been destroyed
 533                         Sys_Quit(0);
 534                         break;
 535                 case ClientMessage:
 536                         // window manager messages
 537                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 538                                 Sys_Quit(0);
 539                         break;
 540                 case MapNotify:
 541                         if (vid_isoverrideredirect)
 542                                 break;
 543                         // window restored
 544                         vid_hidden = false;
 545                         VID_RestoreSystemGamma();
 546
 547                         if(vid_isvidmodefullscreen)
 548                         {
 549                                 // set our video mode
 550                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 551
 552                                 // Move the viewport to top left
 553                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 554                         }
 555
 556                         if(vid_isnetwmfullscreen)
 557                         {
 558                                 // make sure it's fullscreen
 559                                 XEvent event;
 560                                 event.type = ClientMessage;
 561                                 event.xclient.serial = 0;
 562                                 event.xclient.send_event = True;
 563                                 event.xclient.message_type = net_wm_state_atom;
 564                                 event.xclient.window = win;
 565                                 event.xclient.format = 32;
 566                                 event.xclient.data.l[0] = 1;
 567                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 568                                 event.xclient.data.l[2] = 0;
 569                                 event.xclient.data.l[3] = 1;
 570                                 event.xclient.data.l[4] = 0;
 571                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 572                         }
 573
 574                         dowarp = true;
 575
 576                         break;
 577                 case UnmapNotify:
 578                         if (vid_isoverrideredirect)
 579                                 break;
 580                         // window iconified/rolledup/whatever
 581                         vid_hidden = true;
 582                         VID_RestoreSystemGamma();
 583
 584                         if(vid_isvidmodefullscreen)
 585                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 586
 587                         break;
 588                 case FocusIn:
 589                         if (vid_isoverrideredirect)
 590                                 break;
 591                         // window is now the input focus
 592                         vid_activewindow = true;
 593                         break;
 594                 case FocusOut:
 595                         if (vid_isoverrideredirect)
 596                                 break;
 597
 598                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 599                         {
 600                                 // iconify netwm fullscreen window when it loses focus
 601                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 602                                 XEvent event;
 603                                 event.type = ClientMessage;
 604                                 event.xclient.serial = 0;
 605                                 event.xclient.send_event = True;
 606                                 event.xclient.message_type = net_wm_state_atom;
 607                                 event.xclient.window = win;
 608                                 event.xclient.format = 32;
 609                                 event.xclient.data.l[0] = 1;
 610                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 611                                 event.xclient.data.l[2] = 0;
 612                                 event.xclient.data.l[3] = 1;
 613                                 event.xclient.data.l[4] = 0;
 614                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 615                         }
 616
 617                         // window is no longer the input focus
 618                         vid_activewindow = false;
 619                         VID_RestoreSystemGamma();
 620
 621                         break;
 622                 case EnterNotify:
 623                         // mouse entered window
 624                         break;
 625                 case LeaveNotify:
 626                         // mouse left window
 627                         break;
 628                 }
 629         }
 630
 631         if (dowarp)
 632         {
 633                 /* move the mouse to the window center again */
 634                 // we'll catch the warp motion by its send_event flag, updating the
 635                 // stored mouse position without adding any delta motion
 636                 XEvent event;
 637                 event.type = MotionNotify;
 638                 event.xmotion.display = vidx11_display;
 639                 event.xmotion.window = win;
 640                 event.xmotion.x = vid.width / 2;
 641                 event.xmotion.y = vid.height / 2;
 642                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 643                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 644         }
 645 }
 646
 647 static void *prjobj = NULL;
 648
 649 static void GL_CloseLibrary(void)
 650 {
 651         if (prjobj)
 652                 dlclose(prjobj);
 653         prjobj = NULL;
 654         gl_driver[0] = 0;
 655         qglXGetProcAddressARB = NULL;
 656         gl_extensions = "";
 657         gl_platform = "";
 658         gl_platformextensions = "";
 659 }
 660
 661 static int GL_OpenLibrary(const char *name)
 662 {
 663         Con_Printf("Loading OpenGL driver %s\n", name);
 664         GL_CloseLibrary();
 665         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 666         {
 667                 Con_Printf("Unable to open symbol list for %s\n", name);
 668                 return false;
 669         }
 670         strlcpy(gl_driver, name, sizeof(gl_driver));
 671         return true;
 672 }
 673
 674 void *GL_GetProcAddress(const char *name)
 675 {
 676         void *p = NULL;
 677         if (qglXGetProcAddressARB != NULL)
 678                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 679         if (p == NULL)
 680                 p = (void *) dlsym(prjobj, name);
 681         return p;
 682 }
 683
 684 void VID_Shutdown(void)
 685 {
 686         if (!ctx || !vidx11_display)
 687                 return;
 688
 689         VID_SetMouse(false, false, false);
 690         VID_RestoreSystemGamma();
 691
 692         // FIXME: glXDestroyContext here?
 693         if (vid_isvidmodefullscreen)
 694                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 695         if (win)
 696                 XDestroyWindow(vidx11_display, win);
 697         XCloseDisplay(vidx11_display);
 698
 699         vid_hidden = true;
 700         vid_isfullscreen = false;
 701         vid_isnetwmfullscreen = false;
 702         vid_isvidmodefullscreen = false;
 703         vid_isoverrideredirect = false;
 704         vidx11_display = NULL;
 705         win = 0;
 706         ctx = NULL;
 707
 708         GL_CloseLibrary();
 709         Key_ClearStates ();
 710 }
 711
 712 void signal_handler(int sig)
 713 {
 714         Con_Printf("Received signal %d, exiting...\n", sig);
 715         VID_RestoreSystemGamma();
 716         Sys_Quit(1);
 717 }
 718
 719 void InitSig(void)
 720 {
 721         signal(SIGHUP, signal_handler);
 722         signal(SIGINT, signal_handler);
 723         signal(SIGQUIT, signal_handler);
 724         signal(SIGILL, signal_handler);
 725         signal(SIGTRAP, signal_handler);
 726         signal(SIGIOT, signal_handler);
 727         signal(SIGBUS, signal_handler);
 728         signal(SIGFPE, signal_handler);
 729         signal(SIGSEGV, signal_handler);
 730         signal(SIGTERM, signal_handler);
 731 }
 732
 733 void VID_Finish (void)
 734 {
 735         vid_usevsync = vid_vsync.integer && !cls.timedemo && qglXSwapIntervalSGI;
 736         if (vid_usingvsync != vid_usevsync)
 737         {
 738                 vid_usingvsync = vid_usevsync;
 739                 if (qglXSwapIntervalSGI (vid_usevsync))
 740                         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");
 741         }
 742
 743         if (!vid_hidden)
 744         {
 745                 CHECKGLERROR
 746                 if (r_speeds.integer == 2 || gl_finish.integer)
 747                 {
 748                         qglFinish();CHECKGLERROR
 749                 }
 750                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 751         }
 752
 753         if (vid_x11_hardwaregammasupported)
 754                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 755 }
 756
 757 int VID_SetGamma(unsigned short *ramps, int rampsize)
 758 {
 759         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 760 }
 761
 762 int VID_GetGamma(unsigned short *ramps, int rampsize)
 763 {
 764         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 765 }
 766
 767 void VID_Init(void)
 768 {
 769 #if !defined(__APPLE__) && !defined(SUNOS)
 770         Cvar_RegisterVariable (&vid_dgamouse);
 771 #endif
 772         Cvar_RegisterVariable (&vid_netwmfullscreen);
 773         InitSig(); // trap evil signals
 774 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 775         if (COM_CheckParm ("-nomouse"))
 776                 mouse_avail = false;
 777 }
 778
 779 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 780 {
 781         *attrib++ = GLX_RGBA;
 782         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 783         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 784         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 785         *attrib++ = GLX_DOUBLEBUFFER;
 786         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 787         // if stencil is enabled, ask for alpha too
 788         if (stencil)
 789         {
 790                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 791                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 792         }
 793         if (stereobuffer)
 794                 *attrib++ = GLX_STEREO;
 795         if (samples > 1)
 796         {
 797                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 798                 *attrib++ = 1;
 799                 *attrib++ = GLX_SAMPLES_ARB;
 800                 *attrib++ = samples;
 801         }
 802         *attrib++ = None;
 803 }
 804
 805 qboolean VID_InitMode(viddef_mode_t *mode)
 806 {
 807         int i;
 808         int attrib[32];
 809         XSetWindowAttributes attr;
 810         XClassHint *clshints;
 811         XWMHints *wmhints;
 812         XSizeHints *szhints;
 813         unsigned long mask;
 814         XVisualInfo *visinfo;
 815         int MajorVersion, MinorVersion;
 816         const char *drivername;
 817
 818         vid_isfullscreen = false;
 819         vid_isnetwmfullscreen = false;
 820         vid_isvidmodefullscreen = false;
 821         vid_isoverrideredirect = false;
 822
 823 #if defined(__APPLE__) && defined(__MACH__)
 824         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 825 #else
 826         drivername = "libGL.so.1";
 827 #endif
 828 // 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
 829 // 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
 830 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 831         i = COM_CheckParm("-gl_driver");
 832         if (i && i < com_argc - 1)
 833                 drivername = com_argv[i + 1];
 834         if (!GL_OpenLibrary(drivername))
 835         {
 836                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 837                 return false;
 838         }
 839
 840         if (!(vidx11_display = XOpenDisplay(NULL)))
 841         {
 842                 Con_Print("Couldn't open the X display\n");
 843                 return false;
 844         }
 845
 846         // LordHavoc: making the close button on a window do the right thing
 847         // seems to involve this mess, sigh...
 848         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 849         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 850         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 851         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 852
 853         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 854         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 855
 856         vidx11_screen = DefaultScreen(vidx11_display);
 857         root = RootWindow(vidx11_display, vidx11_screen);
 858
 859         // Get video mode list
 860         MajorVersion = MinorVersion = 0;
 861         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 862                 vidmode_ext = false;
 863         else
 864         {
 865                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 866                 vidmode_ext = true;
 867         }
 868
 869         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 870          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 871          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 872          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 873          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 874          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 875         {
 876                 Con_Printf("glX functions not found in %s\n", gl_driver);
 877                 return false;
 878         }
 879
 880         VID_BuildGLXAttrib(attrib, mode->bitsperpixel == 32, mode->stereobuffer, mode->samples);
 881         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 882         if (!visinfo)
 883         {
 884                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 885                 return false;
 886         }
 887
 888         if (mode->fullscreen)
 889         {
 890                 if(vid_netwmfullscreen.integer)
 891                 {
 892                         // TODO detect WM support
 893                         vid_isnetwmfullscreen = true;
 894                         vid_isfullscreen = true;
 895                         // width and height will be filled in later
 896                         Con_DPrintf("Using NetWM fullscreen mode\n");
 897                 }
 898
 899                 if(!vid_isfullscreen && vidmode_ext)
 900                 {
 901                         int best_fit, best_dist, dist, x, y;
 902
 903                         // Are we going fullscreen?  If so, let's change video mode
 904                         XF86VidModeModeLine *current_vidmode;
 905                         XF86VidModeModeInfo **vidmodes;
 906                         int num_vidmodes;
 907
 908                         // This nice hack comes from the SDL source code
 909                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 910                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 911
 912                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 913                         best_dist = 0;
 914                         best_fit = -1;
 915
 916                         for (i = 0; i < num_vidmodes; i++)
 917                         {
 918                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
 919                                         continue;
 920
 921                                 x = mode->width - vidmodes[i]->hdisplay;
 922                                 y = mode->height - vidmodes[i]->vdisplay;
 923                                 dist = (x * x) + (y * y);
 924                                 if (best_fit == -1 || dist < best_dist)
 925                                 {
 926                                         best_dist = dist;
 927                                         best_fit = i;
 928                                 }
 929                         }
 930
 931                         if (best_fit != -1)
 932                         {
 933                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 934                                 // to width/height =, so the window will take the full area of
 935                                 // the mode chosen
 936                                 mode->width = vidmodes[best_fit]->hdisplay;
 937                                 mode->height = vidmodes[best_fit]->vdisplay;
 938
 939                                 // change to the mode
 940                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 941                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 942                                 vid_isvidmodefullscreen = true;
 943                                 vid_isfullscreen = true;
 944
 945                                 // Move the viewport to top left
 946                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 947                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
 948                         }
 949
 950                         free(vidmodes);
 951                 }
 952
 953                 if(!vid_isfullscreen)
 954                 {
 955                         // sorry, no FS available
 956                         // use the full desktop resolution
 957                         vid_isfullscreen = true;
 958                         // width and height will be filled in later
 959                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
 960                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
 961                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
 962                 }
 963         }
 964
 965         // LordHavoc: save the visual for use in gamma ramp settings later
 966         vidx11_visual = visinfo->visual;
 967
 968         /* window attributes */
 969         attr.background_pixel = 0;
 970         attr.border_pixel = 0;
 971         // LordHavoc: save the colormap for later, too
 972         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 973         attr.event_mask = X_MASK;
 974
 975         if (mode->fullscreen)
 976         {
 977                 if(vid_isnetwmfullscreen)
 978                 {
 979                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 980                         attr.backing_store = NotUseful;
 981                         attr.save_under = False;
 982                 }
 983                 else
 984                 {
 985                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 986                         attr.override_redirect = True;
 987                         attr.backing_store = NotUseful;
 988                         attr.save_under = False;
 989                         vid_isoverrideredirect = true; // so it knows to grab
 990                 }
 991         }
 992         else
 993         {
 994                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 995         }
 996
 997         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 998
 999         wmhints = XAllocWMHints();
1000         if(XpmCreatePixmapFromData(vidx11_display, win,
1001                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
1002                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1003                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1004
1005         clshints = XAllocClassHint();
1006         clshints->res_name = strdup(gamename);
1007         clshints->res_class = strdup("DarkPlaces");
1008
1009         szhints = XAllocSizeHints();
1010         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1011         {
1012                 szhints->min_width = szhints->max_width = mode->width;
1013                 szhints->min_height = szhints->max_height = mode->height;
1014                 szhints->flags |= PMinSize | PMaxSize;
1015         }
1016
1017         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1018         XFree(clshints);
1019         XFree(wmhints);
1020         XFree(szhints);
1021
1022         //XStoreName(vidx11_display, win, gamename);
1023         XMapWindow(vidx11_display, win);
1024
1025         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1026
1027         if (vid_isoverrideredirect)
1028         {
1029                 XMoveWindow(vidx11_display, win, 0, 0);
1030                 XRaiseWindow(vidx11_display, win);
1031                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1032                 XFlush(vidx11_display);
1033         }
1034
1035         if(vid_isvidmodefullscreen)
1036         {
1037                 // Move the viewport to top left
1038                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1039         }
1040
1041         //XSync(vidx11_display, False);
1042
1043         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1044         if (!ctx)
1045         {
1046                 Con_Printf ("glXCreateContext failed\n");
1047                 return false;
1048         }
1049
1050         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1051         {
1052                 Con_Printf ("glXMakeCurrent failed\n");
1053                 return false;
1054         }
1055
1056         XSync(vidx11_display, False);
1057
1058         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1059         {
1060                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1061                 return false;
1062         }
1063
1064         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1065         gl_platform = "GLX";
1066         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1067
1068 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1069 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1070 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1071         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1072 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1073 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1074 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1075         GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1076
1077         vid_usingmousegrab = false;
1078         vid_usingmouse = false;
1079         vid_usinghidecursor = false;
1080         vid_usingvsync = false;
1081         vid_hidden = false;
1082         vid_activewindow = true;
1083         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1084 #if !defined(__APPLE__) && !defined(SUNOS)
1085         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1086         if (!vid_x11_dgasupported)
1087                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1088 #endif
1089
1090         GL_Init();
1091         return true;
1092 }
1093
1094 void Sys_SendKeyEvents(void)
1095 {
1096         static qboolean sound_active = true;
1097
1098         // enable/disable sound on focus gain/loss
1099         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1100         {
1101                 if (!sound_active)
1102                 {
1103                         S_UnblockSound ();
1104                         sound_active = true;
1105                 }
1106         }
1107         else
1108         {
1109                 if (sound_active)
1110                 {
1111                         S_BlockSound ();
1112                         sound_active = false;
1113                 }
1114         }
1115
1116         HandleEvents();
1117 }
1118
1119 void IN_Move (void)
1120 {
1121 }
1122
1123 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1124 {
1125         if(vidmode_ext)
1126         {
1127                 int i, bpp;
1128                 size_t k;
1129                 XF86VidModeModeInfo **vidmodes;
1130                 int num_vidmodes;
1131
1132                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1133                 k = 0;
1134                 for (i = 0; i < num_vidmodes; i++)
1135                 {
1136                         if(k >= maxcount)
1137                                 break;
1138                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1139                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1140                         {
1141                                 if(k >= maxcount)
1142                                         break;
1143                                 modes[k].width = vidmodes[i]->hdisplay;
1144                                 modes[k].height = vidmodes[i]->vdisplay;
1145                                 modes[k].bpp = 8;
1146                                 if(vidmodes[i]->dotclock && vidmodes[i]->htotal && vidmodes[i]->vtotal)
1147                                         modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1148                                 else
1149                                         modes[k].refreshrate = 60;
1150                                 modes[k].pixelheight_num = 1;
1151                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1152                                 ++k;
1153                         }
1154                 }
1155                 return k;
1156         }
1157         return 0; // FIXME implement this
1158 }