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                 *uch = 0;
 158                 return;
 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 }
 170 static int XLateKey(XKeyEvent *ev, Uchar *ascii)
 171 {
 172         int key = 0;
 173         //char buf[64];
 174         KeySym keysym, shifted;
 175         Status status;
 176
 177         keysym = XLookupKeysym (ev, 0);
 178         DP_Xutf8LookupString(ev, ascii, &shifted, &status);
 179
 180         switch(keysym)
 181         {
 182                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 183                 case XK_Page_Up:         key = K_PGUP; break;
 184
 185                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 186                 case XK_Page_Down:       key = K_PGDN; break;
 187
 188                 case XK_KP_Home: key = K_KP_HOME; break;
 189                 case XK_Home:    key = K_HOME; break;
 190
 191                 case XK_KP_End:  key = K_KP_END; break;
 192                 case XK_End:     key = K_END; break;
 193
 194                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 195                 case XK_Left:    key = K_LEFTARROW; break;
 196
 197                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 198                 case XK_Right:  key = K_RIGHTARROW;             break;
 199
 200                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 201                 case XK_Down:    key = K_DOWNARROW; break;
 202
 203                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 204                 case XK_Up:              key = K_UPARROW;        break;
 205
 206                 case XK_Escape: key = K_ESCAPE;         break;
 207
 208                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 209                 case XK_Return: key = K_ENTER;           break;
 210
 211                 case XK_Tab:            key = K_TAB;                     break;
 212
 213                 case XK_F1:              key = K_F1;                            break;
 214
 215                 case XK_F2:              key = K_F2;                            break;
 216
 217                 case XK_F3:              key = K_F3;                            break;
 218
 219                 case XK_F4:              key = K_F4;                            break;
 220
 221                 case XK_F5:              key = K_F5;                            break;
 222
 223                 case XK_F6:              key = K_F6;                            break;
 224
 225                 case XK_F7:              key = K_F7;                            break;
 226
 227                 case XK_F8:              key = K_F8;                            break;
 228
 229                 case XK_F9:              key = K_F9;                            break;
 230
 231                 case XK_F10:            key = K_F10;                     break;
 232
 233                 case XK_F11:            key = K_F11;                     break;
 234
 235                 case XK_F12:            key = K_F12;                     break;
 236
 237                 case XK_BackSpace: key = K_BACKSPACE; break;
 238
 239                 case XK_KP_Delete: key = K_KP_DEL; break;
 240                 case XK_Delete: key = K_DEL; break;
 241
 242                 case XK_Pause:  key = K_PAUSE;           break;
 243
 244                 case XK_Shift_L:
 245                 case XK_Shift_R:        key = K_SHIFT;          break;
 246
 247                 case XK_Execute:
 248                 case XK_Control_L:
 249                 case XK_Control_R:      key = K_CTRL;            break;
 250
 251                 case XK_Super_L:
 252                 case XK_Super_R: key = K_SUPER;                 break;
 253                 case XK_Meta_L:
 254                 case XK_Meta_R:
 255                 case XK_Alt_L:
 256                 case XK_ISO_Level3_Shift:
 257                 case XK_Alt_R: key = K_ALT;                     break;
 258
 259                 case XK_KP_Begin: key = K_KP_5; break;
 260
 261                 case XK_Insert:key = K_INS; break;
 262                 case XK_KP_Insert: key = K_KP_INS; break;
 263
 264                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 265                 case XK_KP_Add:  key = K_KP_PLUS; break;
 266                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 267                 case XK_KP_Divide: key = K_KP_SLASH; break;
 268
 269                 case XK_section:        key = '~'; break;
 270
 271                 default:
 272                         if (keysym < 32)
 273                                 break;
 274
 275                         if (keysym >= 'A' && keysym <= 'Z')
 276                                 key = keysym - 'A' + 'a';
 277                         else
 278                                 key = keysym;
 279
 280                         break;
 281         }
 282
 283         return key;
 284 }
 285
 286 static Cursor CreateNullCursor(Display *display, Window root)
 287 {
 288         Pixmap cursormask;
 289         XGCValues xgc;
 290         GC gc;
 291         XColor dummycolour;
 292         Cursor cursor;
 293
 294         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 295         xgc.function = GXclear;
 296         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 297         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 298         dummycolour.pixel = 0;
 299         dummycolour.red = 0;
 300         dummycolour.flags = 04;
 301         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 302         XFreePixmap(display,cursormask);
 303         XFreeGC(display,gc);
 304         return cursor;
 305 }
 306
 307 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 308 {
 309         static int originalmouseparms_num;
 310         static int originalmouseparms_denom;
 311         static int originalmouseparms_threshold;
 312         static qboolean restore_spi;
 313
 314 #if !defined(__APPLE__) && !defined(SUNOS)
 315         qboolean usedgamouse;
 316 #endif
 317
 318         if (!vidx11_display || !win)
 319                 return;
 320
 321         if (relative)
 322                 fullscreengrab = true;
 323
 324         if (!mouse_avail)
 325                 fullscreengrab = relative = hidecursor = false;
 326
 327 #if !defined(__APPLE__) && !defined(SUNOS)
 328         usedgamouse = relative && vid_dgamouse.integer;
 329         if (!vid_x11_dgasupported)
 330                 usedgamouse = false;
 331         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 332                 VID_SetMouse(false, false, false); // ungrab first!
 333 #endif
 334
 335         if (vid_usingmousegrab != fullscreengrab)
 336         {
 337                 vid_usingmousegrab = fullscreengrab;
 338                 cl_ignoremousemoves = 2;
 339                 if (fullscreengrab)
 340                 {
 341                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 342                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 343                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 344                 }
 345                 else
 346                 {
 347                         XUngrabPointer(vidx11_display, CurrentTime);
 348                         XUngrabKeyboard(vidx11_display, CurrentTime);
 349                 }
 350         }
 351
 352         if (relative)
 353         {
 354                 if (!vid_usingmouse)
 355                 {
 356                         XWindowAttributes attribs_1;
 357                         XSetWindowAttributes attribs_2;
 358
 359                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 360                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 361                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 362
 363 #if !defined(__APPLE__) && !defined(SUNOS)
 364                         vid_usingdgamouse = usedgamouse;
 365                         if (usedgamouse)
 366                         {
 367                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 368                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 369                         }
 370                         else
 371 #endif
 372                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 373
 374 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 375 #if !defined(__APPLE__) && !defined(SUNOS)
 376                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 377 #else
 378                         if (!COM_CheckParm ("-noforcemparms"))
 379 #endif
 380                         {
 381                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 382                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 383                                 restore_spi = true;
 384                         }
 385                         else
 386                                 restore_spi = false;
 387
 388                         cl_ignoremousemoves = 2;
 389                         vid_usingmouse = true;
 390                 }
 391         }
 392         else
 393         {
 394                 if (vid_usingmouse)
 395                 {
 396 #if !defined(__APPLE__) && !defined(SUNOS)
 397                         if (vid_usingdgamouse)
 398                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 399                         vid_usingdgamouse = false;
 400 #endif
 401                         cl_ignoremousemoves = 2;
 402
 403                         if (restore_spi)
 404                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 405                         restore_spi = false;
 406
 407                         vid_usingmouse = false;
 408                 }
 409         }
 410
 411         if (vid_usinghidecursor != hidecursor)
 412         {
 413                 vid_usinghidecursor = hidecursor;
 414                 if (hidecursor)
 415                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 416                 else
 417                         XUndefineCursor(vidx11_display, win);
 418         }
 419 }
 420
 421 static keynum_t buttonremap[18] =
 422 {
 423         K_MOUSE1,
 424         K_MOUSE3,
 425         K_MOUSE2,
 426         K_MWHEELUP,
 427         K_MWHEELDOWN,
 428         K_MOUSE4,
 429         K_MOUSE5,
 430         K_MOUSE6,
 431         K_MOUSE7,
 432         K_MOUSE8,
 433         K_MOUSE9,
 434         K_MOUSE10,
 435         K_MOUSE11,
 436         K_MOUSE12,
 437         K_MOUSE13,
 438         K_MOUSE14,
 439         K_MOUSE15,
 440         K_MOUSE16,
 441 };
 442
 443 static void HandleEvents(void)
 444 {
 445         XEvent event;
 446         int key;
 447         Uchar unicode;
 448         qboolean dowarp = false;
 449
 450         if (!vidx11_display)
 451                 return;
 452
 453         while (XPending(vidx11_display))
 454         {
 455                 XNextEvent(vidx11_display, &event);
 456
 457                 switch (event.type)
 458                 {
 459                 case KeyPress:
 460                         // key pressed
 461                         key = XLateKey (&event.xkey, &unicode);
 462                         Key_Event(key, unicode, true);
 463                         break;
 464
 465                 case KeyRelease:
 466                         // key released
 467                         key = XLateKey (&event.xkey, &unicode);
 468                         Key_Event(key, unicode, false);
 469                         break;
 470
 471                 case MotionNotify:
 472                         // mouse moved
 473                         if (vid_usingmouse)
 474                         {
 475 #if !defined(__APPLE__) && !defined(SUNOS)
 476                                 if (vid_usingdgamouse)
 477                                 {
 478                                         in_mouse_x += event.xmotion.x_root;
 479                                         in_mouse_y += event.xmotion.y_root;
 480                                 }
 481                                 else
 482 #endif
 483                                 {
 484                                         if (!event.xmotion.send_event)
 485                                         {
 486                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 487                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 488                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 489                                                 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)
 490                                                         dowarp = true;
 491                                         }
 492                                 }
 493                         }
 494                         in_windowmouse_x = event.xmotion.x;
 495                         in_windowmouse_y = event.xmotion.y;
 496                         break;
 497
 498                 case ButtonPress:
 499                         // mouse button pressed
 500                         if (event.xbutton.button <= 18)
 501                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 502                         else
 503                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 504                         break;
 505
 506                 case ButtonRelease:
 507                         // mouse button released
 508                         if (event.xbutton.button <= 18)
 509                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 510                         else
 511                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 512                         break;
 513
 514                 case CreateNotify:
 515                         // window created
 516                         win_x = event.xcreatewindow.x;
 517                         win_y = event.xcreatewindow.y;
 518                         break;
 519
 520                 case ConfigureNotify:
 521                         // window changed size/location
 522                         win_x = event.xconfigure.x;
 523                         win_y = event.xconfigure.y;
 524                         if(vid_resizable.integer < 2 || vid_isnetwmfullscreen)
 525                         {
 526                                 vid.width = event.xconfigure.width;
 527                                 vid.height = event.xconfigure.height;
 528                                 if(vid_isnetwmfullscreen)
 529                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 530                                 else
 531                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 532                         }
 533                         break;
 534                 case DestroyNotify:
 535                         // window has been destroyed
 536                         Sys_Quit(0);
 537                         break;
 538                 case ClientMessage:
 539                         // window manager messages
 540                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 541                                 Sys_Quit(0);
 542                         break;
 543                 case MapNotify:
 544                         if (vid_isoverrideredirect)
 545                                 break;
 546                         // window restored
 547                         vid_hidden = false;
 548                         VID_RestoreSystemGamma();
 549
 550                         if(vid_isvidmodefullscreen)
 551                         {
 552                                 // set our video mode
 553                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 554
 555                                 // Move the viewport to top left
 556                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 557                         }
 558
 559                         if(vid_isnetwmfullscreen)
 560                         {
 561                                 // make sure it's fullscreen
 562                                 XEvent event;
 563                                 event.type = ClientMessage;
 564                                 event.xclient.serial = 0;
 565                                 event.xclient.send_event = True;
 566                                 event.xclient.message_type = net_wm_state_atom;
 567                                 event.xclient.window = win;
 568                                 event.xclient.format = 32;
 569                                 event.xclient.data.l[0] = 1;
 570                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 571                                 event.xclient.data.l[2] = 0;
 572                                 event.xclient.data.l[3] = 1;
 573                                 event.xclient.data.l[4] = 0;
 574                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 575                         }
 576
 577                         dowarp = true;
 578
 579                         break;
 580                 case UnmapNotify:
 581                         if (vid_isoverrideredirect)
 582                                 break;
 583                         // window iconified/rolledup/whatever
 584                         vid_hidden = true;
 585                         VID_RestoreSystemGamma();
 586
 587                         if(vid_isvidmodefullscreen)
 588                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 589
 590                         break;
 591                 case FocusIn:
 592                         if (vid_isoverrideredirect)
 593                                 break;
 594                         // window is now the input focus
 595                         vid_activewindow = true;
 596                         break;
 597                 case FocusOut:
 598                         if (vid_isoverrideredirect)
 599                                 break;
 600
 601                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 602                         {
 603                                 // iconify netwm fullscreen window when it loses focus
 604                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 605                                 XEvent event;
 606                                 event.type = ClientMessage;
 607                                 event.xclient.serial = 0;
 608                                 event.xclient.send_event = True;
 609                                 event.xclient.message_type = net_wm_state_atom;
 610                                 event.xclient.window = win;
 611                                 event.xclient.format = 32;
 612                                 event.xclient.data.l[0] = 1;
 613                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 614                                 event.xclient.data.l[2] = 0;
 615                                 event.xclient.data.l[3] = 1;
 616                                 event.xclient.data.l[4] = 0;
 617                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 618                         }
 619
 620                         // window is no longer the input focus
 621                         vid_activewindow = false;
 622                         VID_RestoreSystemGamma();
 623
 624                         break;
 625                 case EnterNotify:
 626                         // mouse entered window
 627                         break;
 628                 case LeaveNotify:
 629                         // mouse left window
 630                         break;
 631                 }
 632         }
 633
 634         if (dowarp)
 635         {
 636                 /* move the mouse to the window center again */
 637                 // we'll catch the warp motion by its send_event flag, updating the
 638                 // stored mouse position without adding any delta motion
 639                 XEvent event;
 640                 event.type = MotionNotify;
 641                 event.xmotion.display = vidx11_display;
 642                 event.xmotion.window = win;
 643                 event.xmotion.x = vid.width / 2;
 644                 event.xmotion.y = vid.height / 2;
 645                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 646                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 647         }
 648 }
 649
 650 static void *prjobj = NULL;
 651
 652 static void GL_CloseLibrary(void)
 653 {
 654         if (prjobj)
 655                 dlclose(prjobj);
 656         prjobj = NULL;
 657         gl_driver[0] = 0;
 658         qglXGetProcAddressARB = NULL;
 659         gl_extensions = "";
 660         gl_platform = "";
 661         gl_platformextensions = "";
 662 }
 663
 664 static int GL_OpenLibrary(const char *name)
 665 {
 666         Con_Printf("Loading OpenGL driver %s\n", name);
 667         GL_CloseLibrary();
 668         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 669         {
 670                 Con_Printf("Unable to open symbol list for %s\n", name);
 671                 return false;
 672         }
 673         strlcpy(gl_driver, name, sizeof(gl_driver));
 674         return true;
 675 }
 676
 677 void *GL_GetProcAddress(const char *name)
 678 {
 679         void *p = NULL;
 680         if (qglXGetProcAddressARB != NULL)
 681                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 682         if (p == NULL)
 683                 p = (void *) dlsym(prjobj, name);
 684         return p;
 685 }
 686
 687 void VID_Shutdown(void)
 688 {
 689         if (!ctx || !vidx11_display)
 690                 return;
 691
 692         VID_SetMouse(false, false, false);
 693         VID_RestoreSystemGamma();
 694
 695         // FIXME: glXDestroyContext here?
 696         if (vid_isvidmodefullscreen)
 697                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 698         if (win)
 699                 XDestroyWindow(vidx11_display, win);
 700         XCloseDisplay(vidx11_display);
 701
 702         vid_hidden = true;
 703         vid_isfullscreen = false;
 704         vid_isnetwmfullscreen = false;
 705         vid_isvidmodefullscreen = false;
 706         vid_isoverrideredirect = false;
 707         vidx11_display = NULL;
 708         win = 0;
 709         ctx = NULL;
 710
 711         GL_CloseLibrary();
 712         Key_ClearStates ();
 713 }
 714
 715 void signal_handler(int sig)
 716 {
 717         Con_Printf("Received signal %d, exiting...\n", sig);
 718         VID_RestoreSystemGamma();
 719         Sys_Quit(1);
 720 }
 721
 722 void InitSig(void)
 723 {
 724         signal(SIGHUP, signal_handler);
 725         signal(SIGINT, signal_handler);
 726         signal(SIGQUIT, signal_handler);
 727         signal(SIGILL, signal_handler);
 728         signal(SIGTRAP, signal_handler);
 729         signal(SIGIOT, signal_handler);
 730         signal(SIGBUS, signal_handler);
 731         signal(SIGFPE, signal_handler);
 732         signal(SIGSEGV, signal_handler);
 733         signal(SIGTERM, signal_handler);
 734 }
 735
 736 void VID_Finish (void)
 737 {
 738         vid_usevsync = vid_vsync.integer && !cls.timedemo && qglXSwapIntervalSGI;
 739         if (vid_usingvsync != vid_usevsync)
 740         {
 741                 vid_usingvsync = vid_usevsync;
 742                 if (qglXSwapIntervalSGI (vid_usevsync))
 743                         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");
 744         }
 745
 746         if (!vid_hidden)
 747         {
 748                 CHECKGLERROR
 749                 if (r_speeds.integer == 2 || gl_finish.integer)
 750                 {
 751                         qglFinish();CHECKGLERROR
 752                 }
 753                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 754         }
 755
 756         if (vid_x11_hardwaregammasupported)
 757                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 758 }
 759
 760 int VID_SetGamma(unsigned short *ramps, int rampsize)
 761 {
 762         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 763 }
 764
 765 int VID_GetGamma(unsigned short *ramps, int rampsize)
 766 {
 767         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 768 }
 769
 770 void VID_Init(void)
 771 {
 772 #if !defined(__APPLE__) && !defined(SUNOS)
 773         Cvar_RegisterVariable (&vid_dgamouse);
 774 #endif
 775         Cvar_RegisterVariable (&vid_netwmfullscreen);
 776         InitSig(); // trap evil signals
 777 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 778         if (COM_CheckParm ("-nomouse"))
 779                 mouse_avail = false;
 780 }
 781
 782 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 783 {
 784         *attrib++ = GLX_RGBA;
 785         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 786         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 787         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 788         *attrib++ = GLX_DOUBLEBUFFER;
 789         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 790         // if stencil is enabled, ask for alpha too
 791         if (stencil)
 792         {
 793                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 794                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 795         }
 796         if (stereobuffer)
 797                 *attrib++ = GLX_STEREO;
 798         if (samples > 1)
 799         {
 800                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 801                 *attrib++ = 1;
 802                 *attrib++ = GLX_SAMPLES_ARB;
 803                 *attrib++ = samples;
 804         }
 805         *attrib++ = None;
 806 }
 807
 808 qboolean VID_InitMode(viddef_mode_t *mode)
 809 {
 810         int i;
 811         int attrib[32];
 812         XSetWindowAttributes attr;
 813         XClassHint *clshints;
 814         XWMHints *wmhints;
 815         XSizeHints *szhints;
 816         unsigned long mask;
 817         XVisualInfo *visinfo;
 818         int MajorVersion, MinorVersion;
 819         const char *drivername;
 820
 821         vid_isfullscreen = false;
 822         vid_isnetwmfullscreen = false;
 823         vid_isvidmodefullscreen = false;
 824         vid_isoverrideredirect = false;
 825
 826 #if defined(__APPLE__) && defined(__MACH__)
 827         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 828 #else
 829         drivername = "libGL.so.1";
 830 #endif
 831 // 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
 832 // 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
 833 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 834         i = COM_CheckParm("-gl_driver");
 835         if (i && i < com_argc - 1)
 836                 drivername = com_argv[i + 1];
 837         if (!GL_OpenLibrary(drivername))
 838         {
 839                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 840                 return false;
 841         }
 842
 843         if (!(vidx11_display = XOpenDisplay(NULL)))
 844         {
 845                 Con_Print("Couldn't open the X display\n");
 846                 return false;
 847         }
 848
 849         // LordHavoc: making the close button on a window do the right thing
 850         // seems to involve this mess, sigh...
 851         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 852         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 853         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 854         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 855
 856         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 857         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 858
 859         vidx11_screen = DefaultScreen(vidx11_display);
 860         root = RootWindow(vidx11_display, vidx11_screen);
 861
 862         // Get video mode list
 863         MajorVersion = MinorVersion = 0;
 864         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 865                 vidmode_ext = false;
 866         else
 867         {
 868                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 869                 vidmode_ext = true;
 870         }
 871
 872         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 873          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 874          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 875          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 876          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 877          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 878         {
 879                 Con_Printf("glX functions not found in %s\n", gl_driver);
 880                 return false;
 881         }
 882
 883         VID_BuildGLXAttrib(attrib, mode->bitsperpixel == 32, mode->stereobuffer, mode->samples);
 884         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 885         if (!visinfo)
 886         {
 887                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 888                 return false;
 889         }
 890
 891         if (mode->fullscreen)
 892         {
 893                 if(vid_netwmfullscreen.integer)
 894                 {
 895                         // TODO detect WM support
 896                         vid_isnetwmfullscreen = true;
 897                         vid_isfullscreen = true;
 898                         // width and height will be filled in later
 899                         Con_DPrintf("Using NetWM fullscreen mode\n");
 900                 }
 901
 902                 if(!vid_isfullscreen && vidmode_ext)
 903                 {
 904                         int best_fit, best_dist, dist, x, y;
 905
 906                         // Are we going fullscreen?  If so, let's change video mode
 907                         XF86VidModeModeLine *current_vidmode;
 908                         XF86VidModeModeInfo **vidmodes;
 909                         int num_vidmodes;
 910
 911                         // This nice hack comes from the SDL source code
 912                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 913                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 914
 915                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 916                         best_dist = 0;
 917                         best_fit = -1;
 918
 919                         for (i = 0; i < num_vidmodes; i++)
 920                         {
 921                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
 922                                         continue;
 923
 924                                 x = mode->width - vidmodes[i]->hdisplay;
 925                                 y = mode->height - vidmodes[i]->vdisplay;
 926                                 dist = (x * x) + (y * y);
 927                                 if (best_fit == -1 || dist < best_dist)
 928                                 {
 929                                         best_dist = dist;
 930                                         best_fit = i;
 931                                 }
 932                         }
 933
 934                         if (best_fit != -1)
 935                         {
 936                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 937                                 // to width/height =, so the window will take the full area of
 938                                 // the mode chosen
 939                                 mode->width = vidmodes[best_fit]->hdisplay;
 940                                 mode->height = vidmodes[best_fit]->vdisplay;
 941
 942                                 // change to the mode
 943                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 944                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 945                                 vid_isvidmodefullscreen = true;
 946                                 vid_isfullscreen = true;
 947
 948                                 // Move the viewport to top left
 949                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 950                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
 951                         }
 952
 953                         free(vidmodes);
 954                 }
 955
 956                 if(!vid_isfullscreen)
 957                 {
 958                         // sorry, no FS available
 959                         // use the full desktop resolution
 960                         vid_isfullscreen = true;
 961                         // width and height will be filled in later
 962                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
 963                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
 964                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
 965                 }
 966         }
 967
 968         // LordHavoc: save the visual for use in gamma ramp settings later
 969         vidx11_visual = visinfo->visual;
 970
 971         /* window attributes */
 972         attr.background_pixel = 0;
 973         attr.border_pixel = 0;
 974         // LordHavoc: save the colormap for later, too
 975         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 976         attr.event_mask = X_MASK;
 977
 978         if (mode->fullscreen)
 979         {
 980                 if(vid_isnetwmfullscreen)
 981                 {
 982                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 983                         attr.backing_store = NotUseful;
 984                         attr.save_under = False;
 985                 }
 986                 else
 987                 {
 988                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 989                         attr.override_redirect = True;
 990                         attr.backing_store = NotUseful;
 991                         attr.save_under = False;
 992                         vid_isoverrideredirect = true; // so it knows to grab
 993                 }
 994         }
 995         else
 996         {
 997                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 998         }
 999
1000         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
1001
1002         wmhints = XAllocWMHints();
1003         if(XpmCreatePixmapFromData(vidx11_display, win,
1004                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
1005                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1006                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1007
1008         clshints = XAllocClassHint();
1009         clshints->res_name = strdup(gamename);
1010         clshints->res_class = strdup("DarkPlaces");
1011
1012         szhints = XAllocSizeHints();
1013         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1014         {
1015                 szhints->min_width = szhints->max_width = mode->width;
1016                 szhints->min_height = szhints->max_height = mode->height;
1017                 szhints->flags |= PMinSize | PMaxSize;
1018         }
1019
1020         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1021         XFree(clshints);
1022         XFree(wmhints);
1023         XFree(szhints);
1024
1025         //XStoreName(vidx11_display, win, gamename);
1026         XMapWindow(vidx11_display, win);
1027
1028         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1029
1030         if (vid_isoverrideredirect)
1031         {
1032                 XMoveWindow(vidx11_display, win, 0, 0);
1033                 XRaiseWindow(vidx11_display, win);
1034                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1035                 XFlush(vidx11_display);
1036         }
1037
1038         if(vid_isvidmodefullscreen)
1039         {
1040                 // Move the viewport to top left
1041                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1042         }
1043
1044         //XSync(vidx11_display, False);
1045
1046         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1047         if (!ctx)
1048         {
1049                 Con_Printf ("glXCreateContext failed\n");
1050                 return false;
1051         }
1052
1053         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1054         {
1055                 Con_Printf ("glXMakeCurrent failed\n");
1056                 return false;
1057         }
1058
1059         XSync(vidx11_display, False);
1060
1061         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1062         {
1063                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1064                 return false;
1065         }
1066
1067         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1068         gl_platform = "GLX";
1069         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1070
1071 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1072 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1073 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1074         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1075 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1076 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1077 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1078         GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1079
1080         vid_usingmousegrab = false;
1081         vid_usingmouse = false;
1082         vid_usinghidecursor = false;
1083         vid_usingvsync = false;
1084         vid_hidden = false;
1085         vid_activewindow = true;
1086         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1087 #if !defined(__APPLE__) && !defined(SUNOS)
1088         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1089         if (!vid_x11_dgasupported)
1090                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1091 #endif
1092
1093         GL_Init();
1094         return true;
1095 }
1096
1097 void Sys_SendKeyEvents(void)
1098 {
1099         static qboolean sound_active = true;
1100
1101         // enable/disable sound on focus gain/loss
1102         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1103         {
1104                 if (!sound_active)
1105                 {
1106                         S_UnblockSound ();
1107                         sound_active = true;
1108                 }
1109         }
1110         else
1111         {
1112                 if (sound_active)
1113                 {
1114                         S_BlockSound ();
1115                         sound_active = false;
1116                 }
1117         }
1118
1119         HandleEvents();
1120 }
1121
1122 void IN_Move (void)
1123 {
1124 }
1125
1126 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1127 {
1128         if(vidmode_ext)
1129         {
1130                 int i, bpp;
1131                 size_t k;
1132                 XF86VidModeModeInfo **vidmodes;
1133                 int num_vidmodes;
1134
1135                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1136                 k = 0;
1137                 for (i = 0; i < num_vidmodes; i++)
1138                 {
1139                         if(k >= maxcount)
1140                                 break;
1141                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1142                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1143                         {
1144                                 if(k >= maxcount)
1145                                         break;
1146                                 modes[k].width = vidmodes[i]->hdisplay;
1147                                 modes[k].height = vidmodes[i]->vdisplay;
1148                                 modes[k].bpp = 8;
1149                                 if(vidmodes[i]->dotclock && vidmodes[i]->htotal && vidmodes[i]->vtotal)
1150                                         modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1151                                 else
1152                                         modes[k].refreshrate = 60;
1153                                 modes[k].pixelheight_num = 1;
1154                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1155                                 ++k;
1156                         }
1157                 }
1158                 return k;
1159         }
1160         return 0; // FIXME implement this
1161 }