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 int 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         int len;
 140         char buffer[64];
 141         int nbytes = sizeof(buffer);
 142
 143         rc = XLookupString(ev, buffer, nbytes, &keysym, NULL);
 144
 145         if (rc > 0) {
 146                 codepoint = buffer[0] & 0xFF;
 147         } else {
 148                 codepoint = keysym2ucs(keysym);
 149         }
 150
 151         if (codepoint < 0) {
 152                 if (keysym == None) {
 153                         *status_return = XLookupNone;
 154                 } else {
 155                         *status_return = XLookupKeySym;
 156                         *keysym_return = keysym;
 157                 }
 158                 return 0;
 159         }
 160
 161         *uch = codepoint;
 162
 163         if (keysym != None) {
 164                 *keysym_return = keysym;
 165                 *status_return = XLookupBoth;
 166         } else {
 167                 *status_return = XLookupChars;
 168         }
 169         return len;
 170 }
 171 static int XLateKey(XKeyEvent *ev, Uchar *ascii)
 172 {
 173         int key = 0;
 174         //char buf[64];
 175         KeySym keysym, shifted;
 176         Status status;
 177
 178         keysym = XLookupKeysym (ev, 0);
 179         DP_Xutf8LookupString(ev, ascii, &shifted, &status);
 180
 181         switch(keysym)
 182         {
 183                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 184                 case XK_Page_Up:         key = K_PGUP; break;
 185
 186                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 187                 case XK_Page_Down:       key = K_PGDN; break;
 188
 189                 case XK_KP_Home: key = K_KP_HOME; break;
 190                 case XK_Home:    key = K_HOME; break;
 191
 192                 case XK_KP_End:  key = K_KP_END; break;
 193                 case XK_End:     key = K_END; break;
 194
 195                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 196                 case XK_Left:    key = K_LEFTARROW; break;
 197
 198                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 199                 case XK_Right:  key = K_RIGHTARROW;             break;
 200
 201                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 202                 case XK_Down:    key = K_DOWNARROW; break;
 203
 204                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 205                 case XK_Up:              key = K_UPARROW;        break;
 206
 207                 case XK_Escape: key = K_ESCAPE;         break;
 208
 209                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 210                 case XK_Return: key = K_ENTER;           break;
 211
 212                 case XK_Tab:            key = K_TAB;                     break;
 213
 214                 case XK_F1:              key = K_F1;                            break;
 215
 216                 case XK_F2:              key = K_F2;                            break;
 217
 218                 case XK_F3:              key = K_F3;                            break;
 219
 220                 case XK_F4:              key = K_F4;                            break;
 221
 222                 case XK_F5:              key = K_F5;                            break;
 223
 224                 case XK_F6:              key = K_F6;                            break;
 225
 226                 case XK_F7:              key = K_F7;                            break;
 227
 228                 case XK_F8:              key = K_F8;                            break;
 229
 230                 case XK_F9:              key = K_F9;                            break;
 231
 232                 case XK_F10:            key = K_F10;                     break;
 233
 234                 case XK_F11:            key = K_F11;                     break;
 235
 236                 case XK_F12:            key = K_F12;                     break;
 237
 238                 case XK_BackSpace: key = K_BACKSPACE; break;
 239
 240                 case XK_KP_Delete: key = K_KP_DEL; break;
 241                 case XK_Delete: key = K_DEL; break;
 242
 243                 case XK_Pause:  key = K_PAUSE;           break;
 244
 245                 case XK_Shift_L:
 246                 case XK_Shift_R:        key = K_SHIFT;          break;
 247
 248                 case XK_Execute:
 249                 case XK_Control_L:
 250                 case XK_Control_R:      key = K_CTRL;            break;
 251
 252                 case XK_Alt_L:
 253                 case XK_Meta_L:
 254                 case XK_ISO_Level3_Shift:
 255                 case XK_Alt_R:
 256                 case XK_Meta_R: key = K_ALT;                    break;
 257
 258                 case XK_KP_Begin: key = K_KP_5; break;
 259
 260                 case XK_Insert:key = K_INS; break;
 261                 case XK_KP_Insert: key = K_KP_INS; break;
 262
 263                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 264                 case XK_KP_Add:  key = K_KP_PLUS; break;
 265                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 266                 case XK_KP_Divide: key = K_KP_SLASH; break;
 267
 268                 case XK_section:        key = '~'; break;
 269
 270                 default:
 271                         if (keysym < 32)
 272                                 break;
 273
 274                         if (keysym >= 'A' && keysym <= 'Z')
 275                                 key = keysym - 'A' + 'a';
 276                         else
 277                                 key = keysym;
 278
 279                         break;
 280         }
 281
 282         return key;
 283 }
 284
 285 static Cursor CreateNullCursor(Display *display, Window root)
 286 {
 287         Pixmap cursormask;
 288         XGCValues xgc;
 289         GC gc;
 290         XColor dummycolour;
 291         Cursor cursor;
 292
 293         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 294         xgc.function = GXclear;
 295         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 296         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 297         dummycolour.pixel = 0;
 298         dummycolour.red = 0;
 299         dummycolour.flags = 04;
 300         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 301         XFreePixmap(display,cursormask);
 302         XFreeGC(display,gc);
 303         return cursor;
 304 }
 305
 306 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 307 {
 308         static int originalmouseparms_num;
 309         static int originalmouseparms_denom;
 310         static int originalmouseparms_threshold;
 311         static qboolean restore_spi;
 312
 313 #if !defined(__APPLE__) && !defined(SUNOS)
 314         qboolean usedgamouse;
 315 #endif
 316
 317         if (!vidx11_display || !win)
 318                 return;
 319
 320         if (relative)
 321                 fullscreengrab = true;
 322
 323         if (!mouse_avail)
 324                 fullscreengrab = relative = hidecursor = false;
 325
 326 #if !defined(__APPLE__) && !defined(SUNOS)
 327         usedgamouse = relative && vid_dgamouse.integer;
 328         if (!vid_x11_dgasupported)
 329                 usedgamouse = false;
 330         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 331                 VID_SetMouse(false, false, false); // ungrab first!
 332 #endif
 333
 334         if (vid_usingmousegrab != fullscreengrab)
 335         {
 336                 vid_usingmousegrab = fullscreengrab;
 337                 cl_ignoremousemoves = 2;
 338                 if (fullscreengrab)
 339                 {
 340                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 341                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 342                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 343                 }
 344                 else
 345                 {
 346                         XUngrabPointer(vidx11_display, CurrentTime);
 347                         XUngrabKeyboard(vidx11_display, CurrentTime);
 348                 }
 349         }
 350
 351         if (relative)
 352         {
 353                 if (!vid_usingmouse)
 354                 {
 355                         XWindowAttributes attribs_1;
 356                         XSetWindowAttributes attribs_2;
 357
 358                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 359                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 360                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 361
 362 #if !defined(__APPLE__) && !defined(SUNOS)
 363                         vid_usingdgamouse = usedgamouse;
 364                         if (usedgamouse)
 365                         {
 366                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 367                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 368                         }
 369                         else
 370 #endif
 371                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 372
 373 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 374 #if !defined(__APPLE__) && !defined(SUNOS)
 375                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 376 #else
 377                         if (!COM_CheckParm ("-noforcemparms"))
 378 #endif
 379                         {
 380                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 381                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 382                                 restore_spi = true;
 383                         }
 384                         else
 385                                 restore_spi = false;
 386
 387                         cl_ignoremousemoves = 2;
 388                         vid_usingmouse = true;
 389                 }
 390         }
 391         else
 392         {
 393                 if (vid_usingmouse)
 394                 {
 395 #if !defined(__APPLE__) && !defined(SUNOS)
 396                         if (vid_usingdgamouse)
 397                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 398                         vid_usingdgamouse = false;
 399 #endif
 400                         cl_ignoremousemoves = 2;
 401
 402                         if (restore_spi)
 403                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 404                         restore_spi = false;
 405
 406                         vid_usingmouse = false;
 407                 }
 408         }
 409
 410         if (vid_usinghidecursor != hidecursor)
 411         {
 412                 vid_usinghidecursor = hidecursor;
 413                 if (hidecursor)
 414                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 415                 else
 416                         XUndefineCursor(vidx11_display, win);
 417         }
 418 }
 419
 420 static keynum_t buttonremap[18] =
 421 {
 422         K_MOUSE1,
 423         K_MOUSE3,
 424         K_MOUSE2,
 425         K_MWHEELUP,
 426         K_MWHEELDOWN,
 427         K_MOUSE4,
 428         K_MOUSE5,
 429         K_MOUSE6,
 430         K_MOUSE7,
 431         K_MOUSE8,
 432         K_MOUSE9,
 433         K_MOUSE10,
 434         K_MOUSE11,
 435         K_MOUSE12,
 436         K_MOUSE13,
 437         K_MOUSE14,
 438         K_MOUSE15,
 439         K_MOUSE16,
 440 };
 441
 442 static void HandleEvents(void)
 443 {
 444         XEvent event;
 445         int key;
 446         Uchar unicode;
 447         qboolean dowarp = false;
 448
 449         if (!vidx11_display)
 450                 return;
 451
 452         while (XPending(vidx11_display))
 453         {
 454                 XNextEvent(vidx11_display, &event);
 455
 456                 switch (event.type)
 457                 {
 458                 case KeyPress:
 459                         // key pressed
 460                         key = XLateKey (&event.xkey, &unicode);
 461                         Key_Event(key, unicode, true);
 462                         break;
 463
 464                 case KeyRelease:
 465                         // key released
 466                         key = XLateKey (&event.xkey, &unicode);
 467                         Key_Event(key, unicode, false);
 468                         break;
 469
 470                 case MotionNotify:
 471                         // mouse moved
 472                         if (vid_usingmouse)
 473                         {
 474 #if !defined(__APPLE__) && !defined(SUNOS)
 475                                 if (vid_usingdgamouse)
 476                                 {
 477                                         in_mouse_x += event.xmotion.x_root;
 478                                         in_mouse_y += event.xmotion.y_root;
 479                                 }
 480                                 else
 481 #endif
 482                                 {
 483                                         if (!event.xmotion.send_event)
 484                                         {
 485                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 486                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 487                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 488                                                 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)
 489                                                         dowarp = true;
 490                                         }
 491                                 }
 492                         }
 493                         in_windowmouse_x = event.xmotion.x;
 494                         in_windowmouse_y = event.xmotion.y;
 495                         break;
 496
 497                 case ButtonPress:
 498                         // mouse button pressed
 499                         if (event.xbutton.button <= 18)
 500                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 501                         else
 502                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 503                         break;
 504
 505                 case ButtonRelease:
 506                         // mouse button released
 507                         if (event.xbutton.button <= 18)
 508                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 509                         else
 510                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 511                         break;
 512
 513                 case CreateNotify:
 514                         // window created
 515                         win_x = event.xcreatewindow.x;
 516                         win_y = event.xcreatewindow.y;
 517                         break;
 518
 519                 case ConfigureNotify:
 520                         // window changed size/location
 521                         win_x = event.xconfigure.x;
 522                         win_y = event.xconfigure.y;
 523                         if(vid_resizable.integer < 2 || vid_isnetwmfullscreen)
 524                         {
 525                                 vid.width = event.xconfigure.width;
 526                                 vid.height = event.xconfigure.height;
 527                                 if(vid_isnetwmfullscreen)
 528                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 529                                 else
 530                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 531                         }
 532                         break;
 533                 case DestroyNotify:
 534                         // window has been destroyed
 535                         Sys_Quit(0);
 536                         break;
 537                 case ClientMessage:
 538                         // window manager messages
 539                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 540                                 Sys_Quit(0);
 541                         break;
 542                 case MapNotify:
 543                         if (vid_isoverrideredirect)
 544                                 break;
 545                         // window restored
 546                         vid_hidden = false;
 547                         VID_RestoreSystemGamma();
 548
 549                         if(vid_isvidmodefullscreen)
 550                         {
 551                                 // set our video mode
 552                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 553
 554                                 // Move the viewport to top left
 555                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 556                         }
 557
 558                         if(vid_isnetwmfullscreen)
 559                         {
 560                                 // make sure it's fullscreen
 561                                 XEvent event;
 562                                 event.type = ClientMessage;
 563                                 event.xclient.serial = 0;
 564                                 event.xclient.send_event = True;
 565                                 event.xclient.message_type = net_wm_state_atom;
 566                                 event.xclient.window = win;
 567                                 event.xclient.format = 32;
 568                                 event.xclient.data.l[0] = 1;
 569                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 570                                 event.xclient.data.l[2] = 0;
 571                                 event.xclient.data.l[3] = 1;
 572                                 event.xclient.data.l[4] = 0;
 573                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 574                         }
 575
 576                         dowarp = true;
 577
 578                         break;
 579                 case UnmapNotify:
 580                         if (vid_isoverrideredirect)
 581                                 break;
 582                         // window iconified/rolledup/whatever
 583                         vid_hidden = true;
 584                         VID_RestoreSystemGamma();
 585
 586                         if(vid_isvidmodefullscreen)
 587                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 588
 589                         break;
 590                 case FocusIn:
 591                         if (vid_isoverrideredirect)
 592                                 break;
 593                         // window is now the input focus
 594                         vid_activewindow = true;
 595                         break;
 596                 case FocusOut:
 597                         if (vid_isoverrideredirect)
 598                                 break;
 599
 600                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 601                         {
 602                                 // iconify netwm fullscreen window when it loses focus
 603                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 604                                 XEvent event;
 605                                 event.type = ClientMessage;
 606                                 event.xclient.serial = 0;
 607                                 event.xclient.send_event = True;
 608                                 event.xclient.message_type = net_wm_state_atom;
 609                                 event.xclient.window = win;
 610                                 event.xclient.format = 32;
 611                                 event.xclient.data.l[0] = 1;
 612                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 613                                 event.xclient.data.l[2] = 0;
 614                                 event.xclient.data.l[3] = 1;
 615                                 event.xclient.data.l[4] = 0;
 616                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 617                         }
 618
 619                         // window is no longer the input focus
 620                         vid_activewindow = false;
 621                         VID_RestoreSystemGamma();
 622
 623                         break;
 624                 case EnterNotify:
 625                         // mouse entered window
 626                         break;
 627                 case LeaveNotify:
 628                         // mouse left window
 629                         break;
 630                 }
 631         }
 632
 633         if (dowarp)
 634         {
 635                 /* move the mouse to the window center again */
 636                 // we'll catch the warp motion by its send_event flag, updating the
 637                 // stored mouse position without adding any delta motion
 638                 XEvent event;
 639                 event.type = MotionNotify;
 640                 event.xmotion.display = vidx11_display;
 641                 event.xmotion.window = win;
 642                 event.xmotion.x = vid.width / 2;
 643                 event.xmotion.y = vid.height / 2;
 644                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 645                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 646         }
 647 }
 648
 649 static void *prjobj = NULL;
 650
 651 static void GL_CloseLibrary(void)
 652 {
 653         if (prjobj)
 654                 dlclose(prjobj);
 655         prjobj = NULL;
 656         gl_driver[0] = 0;
 657         qglXGetProcAddressARB = NULL;
 658         gl_extensions = "";
 659         gl_platform = "";
 660         gl_platformextensions = "";
 661 }
 662
 663 static int GL_OpenLibrary(const char *name)
 664 {
 665         Con_Printf("Loading OpenGL driver %s\n", name);
 666         GL_CloseLibrary();
 667         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 668         {
 669                 Con_Printf("Unable to open symbol list for %s\n", name);
 670                 return false;
 671         }
 672         strlcpy(gl_driver, name, sizeof(gl_driver));
 673         return true;
 674 }
 675
 676 void *GL_GetProcAddress(const char *name)
 677 {
 678         void *p = NULL;
 679         if (qglXGetProcAddressARB != NULL)
 680                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 681         if (p == NULL)
 682                 p = (void *) dlsym(prjobj, name);
 683         return p;
 684 }
 685
 686 void VID_Shutdown(void)
 687 {
 688         if (!ctx || !vidx11_display)
 689                 return;
 690
 691         VID_SetMouse(false, false, false);
 692         VID_RestoreSystemGamma();
 693
 694         // FIXME: glXDestroyContext here?
 695         if (vid_isvidmodefullscreen)
 696                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 697         if (win)
 698                 XDestroyWindow(vidx11_display, win);
 699         XCloseDisplay(vidx11_display);
 700
 701         vid_hidden = true;
 702         vid_isfullscreen = false;
 703         vid_isnetwmfullscreen = false;
 704         vid_isvidmodefullscreen = false;
 705         vid_isoverrideredirect = false;
 706         vidx11_display = NULL;
 707         win = 0;
 708         ctx = NULL;
 709
 710         GL_CloseLibrary();
 711         Key_ClearStates ();
 712 }
 713
 714 void signal_handler(int sig)
 715 {
 716         Con_Printf("Received signal %d, exiting...\n", sig);
 717         VID_RestoreSystemGamma();
 718         Sys_Quit(1);
 719 }
 720
 721 void InitSig(void)
 722 {
 723         signal(SIGHUP, signal_handler);
 724         signal(SIGINT, signal_handler);
 725         signal(SIGQUIT, signal_handler);
 726         signal(SIGILL, signal_handler);
 727         signal(SIGTRAP, signal_handler);
 728         signal(SIGIOT, signal_handler);
 729         signal(SIGBUS, signal_handler);
 730         signal(SIGFPE, signal_handler);
 731         signal(SIGSEGV, signal_handler);
 732         signal(SIGTERM, signal_handler);
 733 }
 734
 735 void VID_Finish (void)
 736 {
 737         vid_usevsync = vid_vsync.integer && !cls.timedemo && qglXSwapIntervalSGI;
 738         if (vid_usingvsync != vid_usevsync)
 739         {
 740                 vid_usingvsync = vid_usevsync;
 741                 if (qglXSwapIntervalSGI (vid_usevsync))
 742                         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");
 743         }
 744
 745         if (!vid_hidden)
 746         {
 747                 CHECKGLERROR
 748                 if (r_speeds.integer == 2 || gl_finish.integer)
 749                 {
 750                         qglFinish();CHECKGLERROR
 751                 }
 752                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 753         }
 754
 755         if (vid_x11_hardwaregammasupported)
 756                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 757 }
 758
 759 int VID_SetGamma(unsigned short *ramps, int rampsize)
 760 {
 761         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 762 }
 763
 764 int VID_GetGamma(unsigned short *ramps, int rampsize)
 765 {
 766         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 767 }
 768
 769 void VID_Init(void)
 770 {
 771 #if !defined(__APPLE__) && !defined(SUNOS)
 772         Cvar_RegisterVariable (&vid_dgamouse);
 773 #endif
 774         Cvar_RegisterVariable (&vid_netwmfullscreen);
 775         InitSig(); // trap evil signals
 776 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 777         if (COM_CheckParm ("-nomouse"))
 778                 mouse_avail = false;
 779 }
 780
 781 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 782 {
 783         *attrib++ = GLX_RGBA;
 784         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 785         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 786         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 787         *attrib++ = GLX_DOUBLEBUFFER;
 788         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 789         // if stencil is enabled, ask for alpha too
 790         if (stencil)
 791         {
 792                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 793                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 794         }
 795         if (stereobuffer)
 796                 *attrib++ = GLX_STEREO;
 797         if (samples > 1)
 798         {
 799                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 800                 *attrib++ = 1;
 801                 *attrib++ = GLX_SAMPLES_ARB;
 802                 *attrib++ = samples;
 803         }
 804         *attrib++ = None;
 805 }
 806
 807 qboolean VID_InitMode(viddef_mode_t *mode)
 808 {
 809         int i;
 810         int attrib[32];
 811         XSetWindowAttributes attr;
 812         XClassHint *clshints;
 813         XWMHints *wmhints;
 814         XSizeHints *szhints;
 815         unsigned long mask;
 816         XVisualInfo *visinfo;
 817         int MajorVersion, MinorVersion;
 818         const char *drivername;
 819
 820         vid_isfullscreen = false;
 821         vid_isnetwmfullscreen = false;
 822         vid_isvidmodefullscreen = false;
 823         vid_isoverrideredirect = false;
 824
 825 #if defined(__APPLE__) && defined(__MACH__)
 826         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 827 #else
 828         drivername = "libGL.so.1";
 829 #endif
 830 // 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
 831 // 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
 832 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 833         i = COM_CheckParm("-gl_driver");
 834         if (i && i < com_argc - 1)
 835                 drivername = com_argv[i + 1];
 836         if (!GL_OpenLibrary(drivername))
 837         {
 838                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 839                 return false;
 840         }
 841
 842         if (!(vidx11_display = XOpenDisplay(NULL)))
 843         {
 844                 Con_Print("Couldn't open the X display\n");
 845                 return false;
 846         }
 847
 848         // LordHavoc: making the close button on a window do the right thing
 849         // seems to involve this mess, sigh...
 850         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 851         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 852         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 853         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 854
 855         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 856         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 857
 858         vidx11_screen = DefaultScreen(vidx11_display);
 859         root = RootWindow(vidx11_display, vidx11_screen);
 860
 861         // Get video mode list
 862         MajorVersion = MinorVersion = 0;
 863         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 864                 vidmode_ext = false;
 865         else
 866         {
 867                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 868                 vidmode_ext = true;
 869         }
 870
 871         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 872          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 873          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 874          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 875          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 876          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 877         {
 878                 Con_Printf("glX functions not found in %s\n", gl_driver);
 879                 return false;
 880         }
 881
 882         VID_BuildGLXAttrib(attrib, mode->bitsperpixel == 32, mode->stereobuffer, mode->samples);
 883         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 884         if (!visinfo)
 885         {
 886                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 887                 return false;
 888         }
 889
 890         if (mode->fullscreen)
 891         {
 892                 if(vid_netwmfullscreen.integer)
 893                 {
 894                         // TODO detect WM support
 895                         vid_isnetwmfullscreen = true;
 896                         vid_isfullscreen = true;
 897                         // width and height will be filled in later
 898                         Con_DPrintf("Using NetWM fullscreen mode\n");
 899                 }
 900
 901                 if(!vid_isfullscreen && vidmode_ext)
 902                 {
 903                         int best_fit, best_dist, dist, x, y;
 904
 905                         // Are we going fullscreen?  If so, let's change video mode
 906                         XF86VidModeModeLine *current_vidmode;
 907                         XF86VidModeModeInfo **vidmodes;
 908                         int num_vidmodes;
 909
 910                         // This nice hack comes from the SDL source code
 911                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 912                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 913
 914                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 915                         best_dist = 0;
 916                         best_fit = -1;
 917
 918                         for (i = 0; i < num_vidmodes; i++)
 919                         {
 920                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
 921                                         continue;
 922
 923                                 x = mode->width - vidmodes[i]->hdisplay;
 924                                 y = mode->height - vidmodes[i]->vdisplay;
 925                                 dist = (x * x) + (y * y);
 926                                 if (best_fit == -1 || dist < best_dist)
 927                                 {
 928                                         best_dist = dist;
 929                                         best_fit = i;
 930                                 }
 931                         }
 932
 933                         if (best_fit != -1)
 934                         {
 935                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 936                                 // to width/height =, so the window will take the full area of
 937                                 // the mode chosen
 938                                 mode->width = vidmodes[best_fit]->hdisplay;
 939                                 mode->height = vidmodes[best_fit]->vdisplay;
 940
 941                                 // change to the mode
 942                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 943                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 944                                 vid_isvidmodefullscreen = true;
 945                                 vid_isfullscreen = true;
 946
 947                                 // Move the viewport to top left
 948                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 949                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
 950                         }
 951
 952                         free(vidmodes);
 953                 }
 954
 955                 if(!vid_isfullscreen)
 956                 {
 957                         // sorry, no FS available
 958                         // use the full desktop resolution
 959                         vid_isfullscreen = true;
 960                         // width and height will be filled in later
 961                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
 962                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
 963                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
 964                 }
 965         }
 966
 967         // LordHavoc: save the visual for use in gamma ramp settings later
 968         vidx11_visual = visinfo->visual;
 969
 970         /* window attributes */
 971         attr.background_pixel = 0;
 972         attr.border_pixel = 0;
 973         // LordHavoc: save the colormap for later, too
 974         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 975         attr.event_mask = X_MASK;
 976
 977         if (mode->fullscreen)
 978         {
 979                 if(vid_isnetwmfullscreen)
 980                 {
 981                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 982                         attr.backing_store = NotUseful;
 983                         attr.save_under = False;
 984                 }
 985                 else
 986                 {
 987                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 988                         attr.override_redirect = True;
 989                         attr.backing_store = NotUseful;
 990                         attr.save_under = False;
 991                         vid_isoverrideredirect = true; // so it knows to grab
 992                 }
 993         }
 994         else
 995         {
 996                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 997         }
 998
 999         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
1000
1001         wmhints = XAllocWMHints();
1002         if(XpmCreatePixmapFromData(vidx11_display, win,
1003                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
1004                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1005                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1006
1007         clshints = XAllocClassHint();
1008         clshints->res_name = strdup(gamename);
1009         clshints->res_class = strdup("DarkPlaces");
1010
1011         szhints = XAllocSizeHints();
1012         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1013         {
1014                 szhints->min_width = szhints->max_width = mode->width;
1015                 szhints->min_height = szhints->max_height = mode->height;
1016                 szhints->flags |= PMinSize | PMaxSize;
1017         }
1018
1019         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1020         XFree(clshints);
1021         XFree(wmhints);
1022         XFree(szhints);
1023
1024         //XStoreName(vidx11_display, win, gamename);
1025         XMapWindow(vidx11_display, win);
1026
1027         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1028
1029         if (vid_isoverrideredirect)
1030         {
1031                 XMoveWindow(vidx11_display, win, 0, 0);
1032                 XRaiseWindow(vidx11_display, win);
1033                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1034                 XFlush(vidx11_display);
1035         }
1036
1037         if(vid_isvidmodefullscreen)
1038         {
1039                 // Move the viewport to top left
1040                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1041         }
1042
1043         //XSync(vidx11_display, False);
1044
1045         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1046         if (!ctx)
1047         {
1048                 Con_Printf ("glXCreateContext failed\n");
1049                 return false;
1050         }
1051
1052         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1053         {
1054                 Con_Printf ("glXMakeCurrent failed\n");
1055                 return false;
1056         }
1057
1058         XSync(vidx11_display, False);
1059
1060         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1061         {
1062                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1063                 return false;
1064         }
1065
1066         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1067         gl_platform = "GLX";
1068         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1069
1070 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1071 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1072 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1073         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1074 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1075 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1076 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1077         GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1078
1079         vid_usingmousegrab = false;
1080         vid_usingmouse = false;
1081         vid_usinghidecursor = false;
1082         vid_usingvsync = false;
1083         vid_hidden = false;
1084         vid_activewindow = true;
1085         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1086 #if !defined(__APPLE__) && !defined(SUNOS)
1087         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1088         if (!vid_x11_dgasupported)
1089                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1090 #endif
1091
1092         GL_Init();
1093         return true;
1094 }
1095
1096 void Sys_SendKeyEvents(void)
1097 {
1098         static qboolean sound_active = true;
1099
1100         // enable/disable sound on focus gain/loss
1101         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1102         {
1103                 if (!sound_active)
1104                 {
1105                         S_UnblockSound ();
1106                         sound_active = true;
1107                 }
1108         }
1109         else
1110         {
1111                 if (sound_active)
1112                 {
1113                         S_BlockSound ();
1114                         sound_active = false;
1115                 }
1116         }
1117
1118         HandleEvents();
1119 }
1120
1121 void IN_Move (void)
1122 {
1123 }
1124
1125 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1126 {
1127         if(vidmode_ext)
1128         {
1129                 int i, bpp;
1130                 size_t k;
1131                 XF86VidModeModeInfo **vidmodes;
1132                 int num_vidmodes;
1133
1134                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1135                 k = 0;
1136                 for (i = 0; i < num_vidmodes; i++)
1137                 {
1138                         if(k >= maxcount)
1139                                 break;
1140                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1141                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1142                         {
1143                                 if(k >= maxcount)
1144                                         break;
1145                                 modes[k].width = vidmodes[i]->hdisplay;
1146                                 modes[k].height = vidmodes[i]->vdisplay;
1147                                 modes[k].bpp = 8;
1148                                 if(vidmodes[i]->dotclock && vidmodes[i]->htotal && vidmodes[i]->vtotal)
1149                                         modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1150                                 else
1151                                         modes[k].refreshrate = 60;
1152                                 modes[k].pixelheight_num = 1;
1153                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1154                                 ++k;
1155                         }
1156                 }
1157                 return k;
1158         }
1159         return 0; // FIXME implement this
1160 }