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_Alt_L:
 252                 case XK_Meta_L:
 253                 case XK_ISO_Level3_Shift:
 254                 case XK_Alt_R:
 255                 case XK_Meta_R: key = K_ALT;                    break;
 256
 257                 case XK_KP_Begin: key = K_KP_5; break;
 258
 259                 case XK_Insert:key = K_INS; break;
 260                 case XK_KP_Insert: key = K_KP_INS; break;
 261
 262                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 263                 case XK_KP_Add:  key = K_KP_PLUS; break;
 264                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 265                 case XK_KP_Divide: key = K_KP_SLASH; break;
 266
 267                 case XK_section:        key = '~'; break;
 268
 269                 default:
 270                         if (keysym < 32)
 271                                 break;
 272
 273                         if (keysym >= 'A' && keysym <= 'Z')
 274                                 key = keysym - 'A' + 'a';
 275                         else
 276                                 key = keysym;
 277
 278                         break;
 279         }
 280
 281         return key;
 282 }
 283
 284 static Cursor CreateNullCursor(Display *display, Window root)
 285 {
 286         Pixmap cursormask;
 287         XGCValues xgc;
 288         GC gc;
 289         XColor dummycolour;
 290         Cursor cursor;
 291
 292         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 293         xgc.function = GXclear;
 294         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 295         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 296         dummycolour.pixel = 0;
 297         dummycolour.red = 0;
 298         dummycolour.flags = 04;
 299         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 300         XFreePixmap(display,cursormask);
 301         XFreeGC(display,gc);
 302         return cursor;
 303 }
 304
 305 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 306 {
 307         static int originalmouseparms_num;
 308         static int originalmouseparms_denom;
 309         static int originalmouseparms_threshold;
 310         static qboolean restore_spi;
 311
 312 #if !defined(__APPLE__) && !defined(SUNOS)
 313         qboolean usedgamouse;
 314 #endif
 315
 316         if (!vidx11_display || !win)
 317                 return;
 318
 319         if (relative)
 320                 fullscreengrab = true;
 321
 322         if (!mouse_avail)
 323                 fullscreengrab = relative = hidecursor = false;
 324
 325 #if !defined(__APPLE__) && !defined(SUNOS)
 326         usedgamouse = relative && vid_dgamouse.integer;
 327         if (!vid_x11_dgasupported)
 328                 usedgamouse = false;
 329         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 330                 VID_SetMouse(false, false, false); // ungrab first!
 331 #endif
 332
 333         if (vid_usingmousegrab != fullscreengrab)
 334         {
 335                 vid_usingmousegrab = fullscreengrab;
 336                 cl_ignoremousemoves = 2;
 337                 if (fullscreengrab)
 338                 {
 339                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 340                         if (vid_grabkeyboard.integer || vid_isoverrideredirect)
 341                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 342                 }
 343                 else
 344                 {
 345                         XUngrabPointer(vidx11_display, CurrentTime);
 346                         XUngrabKeyboard(vidx11_display, CurrentTime);
 347                 }
 348         }
 349
 350         if (relative)
 351         {
 352                 if (!vid_usingmouse)
 353                 {
 354                         XWindowAttributes attribs_1;
 355                         XSetWindowAttributes attribs_2;
 356
 357                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 358                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 359                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 360
 361 #if !defined(__APPLE__) && !defined(SUNOS)
 362                         vid_usingdgamouse = usedgamouse;
 363                         if (usedgamouse)
 364                         {
 365                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 366                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 367                         }
 368                         else
 369 #endif
 370                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 371
 372 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 373 #if !defined(__APPLE__) && !defined(SUNOS)
 374                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 375 #else
 376                         if (!COM_CheckParm ("-noforcemparms"))
 377 #endif
 378                         {
 379                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 380                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 381                                 restore_spi = true;
 382                         }
 383                         else
 384                                 restore_spi = false;
 385
 386                         cl_ignoremousemoves = 2;
 387                         vid_usingmouse = true;
 388                 }
 389         }
 390         else
 391         {
 392                 if (vid_usingmouse)
 393                 {
 394 #if !defined(__APPLE__) && !defined(SUNOS)
 395                         if (vid_usingdgamouse)
 396                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 397                         vid_usingdgamouse = false;
 398 #endif
 399                         cl_ignoremousemoves = 2;
 400
 401                         if (restore_spi)
 402                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 403                         restore_spi = false;
 404
 405                         vid_usingmouse = false;
 406                 }
 407         }
 408
 409         if (vid_usinghidecursor != hidecursor)
 410         {
 411                 vid_usinghidecursor = hidecursor;
 412                 if (hidecursor)
 413                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 414                 else
 415                         XUndefineCursor(vidx11_display, win);
 416         }
 417 }
 418
 419 static keynum_t buttonremap[18] =
 420 {
 421         K_MOUSE1,
 422         K_MOUSE3,
 423         K_MOUSE2,
 424         K_MWHEELUP,
 425         K_MWHEELDOWN,
 426         K_MOUSE4,
 427         K_MOUSE5,
 428         K_MOUSE6,
 429         K_MOUSE7,
 430         K_MOUSE8,
 431         K_MOUSE9,
 432         K_MOUSE10,
 433         K_MOUSE11,
 434         K_MOUSE12,
 435         K_MOUSE13,
 436         K_MOUSE14,
 437         K_MOUSE15,
 438         K_MOUSE16,
 439 };
 440
 441 static void HandleEvents(void)
 442 {
 443         XEvent event;
 444         int key;
 445         Uchar unicode;
 446         qboolean dowarp = false;
 447
 448         if (!vidx11_display)
 449                 return;
 450
 451         while (XPending(vidx11_display))
 452         {
 453                 XNextEvent(vidx11_display, &event);
 454
 455                 switch (event.type)
 456                 {
 457                 case KeyPress:
 458                         // key pressed
 459                         key = XLateKey (&event.xkey, &unicode);
 460                         Key_Event(key, unicode, true);
 461                         break;
 462
 463                 case KeyRelease:
 464                         // key released
 465                         key = XLateKey (&event.xkey, &unicode);
 466                         Key_Event(key, unicode, false);
 467                         break;
 468
 469                 case MotionNotify:
 470                         // mouse moved
 471                         if (vid_usingmouse)
 472                         {
 473 #if !defined(__APPLE__) && !defined(SUNOS)
 474                                 if (vid_usingdgamouse)
 475                                 {
 476                                         in_mouse_x += event.xmotion.x_root;
 477                                         in_mouse_y += event.xmotion.y_root;
 478                                 }
 479                                 else
 480 #endif
 481                                 {
 482                                         if (!event.xmotion.send_event)
 483                                         {
 484                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 485                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 486                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 487                                                 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)
 488                                                         dowarp = true;
 489                                         }
 490                                 }
 491                         }
 492                         in_windowmouse_x = event.xmotion.x;
 493                         in_windowmouse_y = event.xmotion.y;
 494                         break;
 495
 496                 case ButtonPress:
 497                         // mouse button pressed
 498                         if (event.xbutton.button <= 18)
 499                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 500                         else
 501                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 502                         break;
 503
 504                 case ButtonRelease:
 505                         // mouse button released
 506                         if (event.xbutton.button <= 18)
 507                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 508                         else
 509                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 510                         break;
 511
 512                 case CreateNotify:
 513                         // window created
 514                         win_x = event.xcreatewindow.x;
 515                         win_y = event.xcreatewindow.y;
 516                         break;
 517
 518                 case ConfigureNotify:
 519                         // window changed size/location
 520                         win_x = event.xconfigure.x;
 521                         win_y = event.xconfigure.y;
 522                         if(vid_resizable.integer < 2 || vid_isnetwmfullscreen)
 523                         {
 524                                 vid.width = event.xconfigure.width;
 525                                 vid.height = event.xconfigure.height;
 526                                 if(vid_isnetwmfullscreen)
 527                                         Con_Printf("NetWM fullscreen: actually using resolution %dx%d\n", vid.width, vid.height);
 528                                 else
 529                                         Con_DPrintf("Updating to ConfigureNotify resolution %dx%d\n", vid.width, vid.height);
 530                         }
 531                         break;
 532                 case DestroyNotify:
 533                         // window has been destroyed
 534                         Sys_Quit(0);
 535                         break;
 536                 case ClientMessage:
 537                         // window manager messages
 538                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 539                                 Sys_Quit(0);
 540                         break;
 541                 case MapNotify:
 542                         if (vid_isoverrideredirect)
 543                                 break;
 544                         // window restored
 545                         vid_hidden = false;
 546                         VID_RestoreSystemGamma();
 547
 548                         if(vid_isvidmodefullscreen)
 549                         {
 550                                 // set our video mode
 551                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &game_vidmode);
 552
 553                                 // Move the viewport to top left
 554                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 555                         }
 556
 557                         if(vid_isnetwmfullscreen)
 558                         {
 559                                 // make sure it's fullscreen
 560                                 XEvent event;
 561                                 event.type = ClientMessage;
 562                                 event.xclient.serial = 0;
 563                                 event.xclient.send_event = True;
 564                                 event.xclient.message_type = net_wm_state_atom;
 565                                 event.xclient.window = win;
 566                                 event.xclient.format = 32;
 567                                 event.xclient.data.l[0] = 1;
 568                                 event.xclient.data.l[1] = net_wm_state_fullscreen_atom;
 569                                 event.xclient.data.l[2] = 0;
 570                                 event.xclient.data.l[3] = 1;
 571                                 event.xclient.data.l[4] = 0;
 572                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 573                         }
 574
 575                         dowarp = true;
 576
 577                         break;
 578                 case UnmapNotify:
 579                         if (vid_isoverrideredirect)
 580                                 break;
 581                         // window iconified/rolledup/whatever
 582                         vid_hidden = true;
 583                         VID_RestoreSystemGamma();
 584
 585                         if(vid_isvidmodefullscreen)
 586                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 587
 588                         break;
 589                 case FocusIn:
 590                         if (vid_isoverrideredirect)
 591                                 break;
 592                         // window is now the input focus
 593                         vid_activewindow = true;
 594                         break;
 595                 case FocusOut:
 596                         if (vid_isoverrideredirect)
 597                                 break;
 598
 599                         if(vid_isnetwmfullscreen && event.xfocus.mode == NotifyNormal)
 600                         {
 601                                 // iconify netwm fullscreen window when it loses focus
 602                                 // when the user selects it in the taskbar, the window manager will map it again and send MapNotify
 603                                 XEvent event;
 604                                 event.type = ClientMessage;
 605                                 event.xclient.serial = 0;
 606                                 event.xclient.send_event = True;
 607                                 event.xclient.message_type = net_wm_state_atom;
 608                                 event.xclient.window = win;
 609                                 event.xclient.format = 32;
 610                                 event.xclient.data.l[0] = 1;
 611                                 event.xclient.data.l[1] = net_wm_state_hidden_atom;
 612                                 event.xclient.data.l[2] = 0;
 613                                 event.xclient.data.l[3] = 1;
 614                                 event.xclient.data.l[4] = 0;
 615                                 XSendEvent(vidx11_display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &event);
 616                         }
 617
 618                         // window is no longer the input focus
 619                         vid_activewindow = false;
 620                         VID_RestoreSystemGamma();
 621
 622                         break;
 623                 case EnterNotify:
 624                         // mouse entered window
 625                         break;
 626                 case LeaveNotify:
 627                         // mouse left window
 628                         break;
 629                 }
 630         }
 631
 632         if (dowarp)
 633         {
 634                 /* move the mouse to the window center again */
 635                 // we'll catch the warp motion by its send_event flag, updating the
 636                 // stored mouse position without adding any delta motion
 637                 XEvent event;
 638                 event.type = MotionNotify;
 639                 event.xmotion.display = vidx11_display;
 640                 event.xmotion.window = win;
 641                 event.xmotion.x = vid.width / 2;
 642                 event.xmotion.y = vid.height / 2;
 643                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 644                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 645         }
 646 }
 647
 648 static void *prjobj = NULL;
 649
 650 static void GL_CloseLibrary(void)
 651 {
 652         if (prjobj)
 653                 dlclose(prjobj);
 654         prjobj = NULL;
 655         gl_driver[0] = 0;
 656         qglXGetProcAddressARB = NULL;
 657         gl_extensions = "";
 658         gl_platform = "";
 659         gl_platformextensions = "";
 660 }
 661
 662 static int GL_OpenLibrary(const char *name)
 663 {
 664         Con_Printf("Loading OpenGL driver %s\n", name);
 665         GL_CloseLibrary();
 666         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 667         {
 668                 Con_Printf("Unable to open symbol list for %s\n", name);
 669                 return false;
 670         }
 671         strlcpy(gl_driver, name, sizeof(gl_driver));
 672         return true;
 673 }
 674
 675 void *GL_GetProcAddress(const char *name)
 676 {
 677         void *p = NULL;
 678         if (qglXGetProcAddressARB != NULL)
 679                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 680         if (p == NULL)
 681                 p = (void *) dlsym(prjobj, name);
 682         return p;
 683 }
 684
 685 void VID_Shutdown(void)
 686 {
 687         if (!ctx || !vidx11_display)
 688                 return;
 689
 690         VID_SetMouse(false, false, false);
 691         VID_RestoreSystemGamma();
 692
 693         // FIXME: glXDestroyContext here?
 694         if (vid_isvidmodefullscreen)
 695                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 696         if (win)
 697                 XDestroyWindow(vidx11_display, win);
 698         XCloseDisplay(vidx11_display);
 699
 700         vid_hidden = true;
 701         vid_isfullscreen = false;
 702         vid_isnetwmfullscreen = false;
 703         vid_isvidmodefullscreen = false;
 704         vid_isoverrideredirect = false;
 705         vidx11_display = NULL;
 706         win = 0;
 707         ctx = NULL;
 708
 709         GL_CloseLibrary();
 710         Key_ClearStates ();
 711 }
 712
 713 void signal_handler(int sig)
 714 {
 715         Con_Printf("Received signal %d, exiting...\n", sig);
 716         VID_RestoreSystemGamma();
 717         Sys_Quit(1);
 718 }
 719
 720 void InitSig(void)
 721 {
 722         signal(SIGHUP, signal_handler);
 723         signal(SIGINT, signal_handler);
 724         signal(SIGQUIT, signal_handler);
 725         signal(SIGILL, signal_handler);
 726         signal(SIGTRAP, signal_handler);
 727         signal(SIGIOT, signal_handler);
 728         signal(SIGBUS, signal_handler);
 729         signal(SIGFPE, signal_handler);
 730         signal(SIGSEGV, signal_handler);
 731         signal(SIGTERM, signal_handler);
 732 }
 733
 734 void VID_Finish (void)
 735 {
 736         vid_usevsync = vid_vsync.integer && !cls.timedemo && qglXSwapIntervalSGI;
 737         if (vid_usingvsync != vid_usevsync)
 738         {
 739                 vid_usingvsync = vid_usevsync;
 740                 if (qglXSwapIntervalSGI (vid_usevsync))
 741                         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");
 742         }
 743
 744         if (!vid_hidden)
 745         {
 746                 CHECKGLERROR
 747                 if (r_speeds.integer == 2 || gl_finish.integer)
 748                 {
 749                         qglFinish();CHECKGLERROR
 750                 }
 751                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 752         }
 753
 754         if (vid_x11_hardwaregammasupported)
 755                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 756 }
 757
 758 int VID_SetGamma(unsigned short *ramps, int rampsize)
 759 {
 760         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 761 }
 762
 763 int VID_GetGamma(unsigned short *ramps, int rampsize)
 764 {
 765         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 766 }
 767
 768 void VID_Init(void)
 769 {
 770 #if !defined(__APPLE__) && !defined(SUNOS)
 771         Cvar_RegisterVariable (&vid_dgamouse);
 772 #endif
 773         Cvar_RegisterVariable (&vid_netwmfullscreen);
 774         InitSig(); // trap evil signals
 775 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 776         if (COM_CheckParm ("-nomouse"))
 777                 mouse_avail = false;
 778 }
 779
 780 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 781 {
 782         *attrib++ = GLX_RGBA;
 783         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 784         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 785         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 786         *attrib++ = GLX_DOUBLEBUFFER;
 787         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 788         // if stencil is enabled, ask for alpha too
 789         if (stencil)
 790         {
 791                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 792                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 793         }
 794         if (stereobuffer)
 795                 *attrib++ = GLX_STEREO;
 796         if (samples > 1)
 797         {
 798                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 799                 *attrib++ = 1;
 800                 *attrib++ = GLX_SAMPLES_ARB;
 801                 *attrib++ = samples;
 802         }
 803         *attrib++ = None;
 804 }
 805
 806 qboolean VID_InitMode(viddef_mode_t *mode)
 807 {
 808         int i;
 809         int attrib[32];
 810         XSetWindowAttributes attr;
 811         XClassHint *clshints;
 812         XWMHints *wmhints;
 813         XSizeHints *szhints;
 814         unsigned long mask;
 815         XVisualInfo *visinfo;
 816         int MajorVersion, MinorVersion;
 817         const char *drivername;
 818
 819         vid_isfullscreen = false;
 820         vid_isnetwmfullscreen = false;
 821         vid_isvidmodefullscreen = false;
 822         vid_isoverrideredirect = false;
 823
 824 #if defined(__APPLE__) && defined(__MACH__)
 825         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 826 #else
 827         drivername = "libGL.so.1";
 828 #endif
 829 // 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
 830 // 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
 831 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 832         i = COM_CheckParm("-gl_driver");
 833         if (i && i < com_argc - 1)
 834                 drivername = com_argv[i + 1];
 835         if (!GL_OpenLibrary(drivername))
 836         {
 837                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 838                 return false;
 839         }
 840
 841         if (!(vidx11_display = XOpenDisplay(NULL)))
 842         {
 843                 Con_Print("Couldn't open the X display\n");
 844                 return false;
 845         }
 846
 847         // LordHavoc: making the close button on a window do the right thing
 848         // seems to involve this mess, sigh...
 849         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 850         net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 851         net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 852         net_wm_state_hidden_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_HIDDEN", false);
 853
 854         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 855         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 856
 857         vidx11_screen = DefaultScreen(vidx11_display);
 858         root = RootWindow(vidx11_display, vidx11_screen);
 859
 860         // Get video mode list
 861         MajorVersion = MinorVersion = 0;
 862         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 863                 vidmode_ext = false;
 864         else
 865         {
 866                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 867                 vidmode_ext = true;
 868         }
 869
 870         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 871          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 872          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 873          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 874          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 875          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 876         {
 877                 Con_Printf("glX functions not found in %s\n", gl_driver);
 878                 return false;
 879         }
 880
 881         VID_BuildGLXAttrib(attrib, mode->bitsperpixel == 32, mode->stereobuffer, mode->samples);
 882         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 883         if (!visinfo)
 884         {
 885                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 886                 return false;
 887         }
 888
 889         if (mode->fullscreen)
 890         {
 891                 if(vid_netwmfullscreen.integer)
 892                 {
 893                         // TODO detect WM support
 894                         vid_isnetwmfullscreen = true;
 895                         vid_isfullscreen = true;
 896                         // width and height will be filled in later
 897                         Con_DPrintf("Using NetWM fullscreen mode\n");
 898                 }
 899
 900                 if(!vid_isfullscreen && vidmode_ext)
 901                 {
 902                         int best_fit, best_dist, dist, x, y;
 903
 904                         // Are we going fullscreen?  If so, let's change video mode
 905                         XF86VidModeModeLine *current_vidmode;
 906                         XF86VidModeModeInfo **vidmodes;
 907                         int num_vidmodes;
 908
 909                         // This nice hack comes from the SDL source code
 910                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 911                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 912
 913                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 914                         best_dist = 0;
 915                         best_fit = -1;
 916
 917                         for (i = 0; i < num_vidmodes; i++)
 918                         {
 919                                 if (mode->width > vidmodes[i]->hdisplay || mode->height > vidmodes[i]->vdisplay)
 920                                         continue;
 921
 922                                 x = mode->width - vidmodes[i]->hdisplay;
 923                                 y = mode->height - vidmodes[i]->vdisplay;
 924                                 dist = (x * x) + (y * y);
 925                                 if (best_fit == -1 || dist < best_dist)
 926                                 {
 927                                         best_dist = dist;
 928                                         best_fit = i;
 929                                 }
 930                         }
 931
 932                         if (best_fit != -1)
 933                         {
 934                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 935                                 // to width/height =, so the window will take the full area of
 936                                 // the mode chosen
 937                                 mode->width = vidmodes[best_fit]->hdisplay;
 938                                 mode->height = vidmodes[best_fit]->vdisplay;
 939
 940                                 // change to the mode
 941                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 942                                 memcpy(&game_vidmode, vidmodes[best_fit], sizeof(game_vidmode));
 943                                 vid_isvidmodefullscreen = true;
 944                                 vid_isfullscreen = true;
 945
 946                                 // Move the viewport to top left
 947                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 948                                 Con_DPrintf("Using XVidMode fullscreen mode at %dx%d\n", mode->width, mode->height);
 949                         }
 950
 951                         free(vidmodes);
 952                 }
 953
 954                 if(!vid_isfullscreen)
 955                 {
 956                         // sorry, no FS available
 957                         // use the full desktop resolution
 958                         vid_isfullscreen = true;
 959                         // width and height will be filled in later
 960                         mode->width = DisplayWidth(vidx11_display, vidx11_screen);
 961                         mode->height = DisplayHeight(vidx11_display, vidx11_screen);
 962                         Con_DPrintf("Using X11 fullscreen mode at %dx%d\n", mode->width, mode->height);
 963                 }
 964         }
 965
 966         // LordHavoc: save the visual for use in gamma ramp settings later
 967         vidx11_visual = visinfo->visual;
 968
 969         /* window attributes */
 970         attr.background_pixel = 0;
 971         attr.border_pixel = 0;
 972         // LordHavoc: save the colormap for later, too
 973         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 974         attr.event_mask = X_MASK;
 975
 976         if (mode->fullscreen)
 977         {
 978                 if(vid_isnetwmfullscreen)
 979                 {
 980                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 981                         attr.backing_store = NotUseful;
 982                         attr.save_under = False;
 983                 }
 984                 else
 985                 {
 986                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 987                         attr.override_redirect = True;
 988                         attr.backing_store = NotUseful;
 989                         attr.save_under = False;
 990                         vid_isoverrideredirect = true; // so it knows to grab
 991                 }
 992         }
 993         else
 994         {
 995                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 996         }
 997
 998         win = XCreateWindow(vidx11_display, root, 0, 0, mode->width, mode->height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 999
1000         wmhints = XAllocWMHints();
1001         if(XpmCreatePixmapFromData(vidx11_display, win,
1002                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
1003                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
1004                 wmhints->flags |= IconPixmapHint | IconMaskHint;
1005
1006         clshints = XAllocClassHint();
1007         clshints->res_name = strdup(gamename);
1008         clshints->res_class = strdup("DarkPlaces");
1009
1010         szhints = XAllocSizeHints();
1011         if(vid_resizable.integer == 0 && !vid_isnetwmfullscreen)
1012         {
1013                 szhints->min_width = szhints->max_width = mode->width;
1014                 szhints->min_height = szhints->max_height = mode->height;
1015                 szhints->flags |= PMinSize | PMaxSize;
1016         }
1017
1018         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
1019         // strdup() allocates using malloc(), should be freed with free()
1020         free(clshints->res_name);
1021         free(clshints->res_class);
1022         XFree(clshints);
1023         XFree(wmhints);
1024         XFree(szhints);
1025
1026         //XStoreName(vidx11_display, win, gamename);
1027         XMapWindow(vidx11_display, win);
1028
1029         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
1030
1031         if (vid_isoverrideredirect)
1032         {
1033                 XMoveWindow(vidx11_display, win, 0, 0);
1034                 XRaiseWindow(vidx11_display, win);
1035                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
1036                 XFlush(vidx11_display);
1037         }
1038
1039         if(vid_isvidmodefullscreen)
1040         {
1041                 // Move the viewport to top left
1042                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
1043         }
1044
1045         //XSync(vidx11_display, False);
1046
1047         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
1048         XFree(visinfo); // glXChooseVisual man page says to use XFree to free visinfo
1049         if (!ctx)
1050         {
1051                 Con_Printf ("glXCreateContext failed\n");
1052                 return false;
1053         }
1054
1055         if (!qglXMakeCurrent(vidx11_display, win, ctx))
1056         {
1057                 Con_Printf ("glXMakeCurrent failed\n");
1058                 return false;
1059         }
1060
1061         XSync(vidx11_display, False);
1062
1063         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
1064         {
1065                 Con_Printf ("glGetString not found in %s\n", gl_driver);
1066                 return false;
1067         }
1068
1069         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
1070         gl_platform = "GLX";
1071         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
1072
1073 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1074 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1075 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
1076         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
1077 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
1078 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
1079 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
1080         GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
1081
1082         vid_usingmousegrab = false;
1083         vid_usingmouse = false;
1084         vid_usinghidecursor = false;
1085         vid_usingvsync = false;
1086         vid_hidden = false;
1087         vid_activewindow = true;
1088         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
1089 #if !defined(__APPLE__) && !defined(SUNOS)
1090         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
1091         if (!vid_x11_dgasupported)
1092                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
1093 #endif
1094
1095         GL_Init();
1096         return true;
1097 }
1098
1099 void Sys_SendKeyEvents(void)
1100 {
1101         static qboolean sound_active = true;
1102
1103         // enable/disable sound on focus gain/loss
1104         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
1105         {
1106                 if (!sound_active)
1107                 {
1108                         S_UnblockSound ();
1109                         sound_active = true;
1110                 }
1111         }
1112         else
1113         {
1114                 if (sound_active)
1115                 {
1116                         S_BlockSound ();
1117                         sound_active = false;
1118                 }
1119         }
1120
1121         HandleEvents();
1122 }
1123
1124 void IN_Move (void)
1125 {
1126 }
1127
1128 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
1129 {
1130         if(vidmode_ext)
1131         {
1132                 int i, bpp;
1133                 size_t k;
1134                 XF86VidModeModeInfo **vidmodes;
1135                 int num_vidmodes;
1136
1137                 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
1138                 k = 0;
1139                 for (i = 0; i < num_vidmodes; i++)
1140                 {
1141                         if(k >= maxcount)
1142                                 break;
1143                         // we don't get bpp info, so let's just assume all of 8, 15, 16, 24, 32 work
1144                         for(bpp = 8; bpp <= 32; bpp = ((bpp == 8) ? 15 : (bpp & 0xF8) + 8))
1145                         {
1146                                 if(k >= maxcount)
1147                                         break;
1148                                 modes[k].width = vidmodes[i]->hdisplay;
1149                                 modes[k].height = vidmodes[i]->vdisplay;
1150                                 modes[k].bpp = 8;
1151                                 if(vidmodes[i]->dotclock && vidmodes[i]->htotal && vidmodes[i]->vtotal)
1152                                         modes[k].refreshrate = vidmodes[i]->dotclock / vidmodes[i]->htotal / vidmodes[i]->vtotal;
1153                                 else
1154                                         modes[k].refreshrate = 60;
1155                                 modes[k].pixelheight_num = 1;
1156                                 modes[k].pixelheight_denom = 1; // xvidmode does not provide this
1157                                 ++k;
1158                         }
1159                 }
1160                 // manpage of XF86VidModeGetAllModeLines says it should be freed by the caller
1161                 XFree(vidmodes);
1162                 return k;
1163         }
1164         return 0; // FIXME implement this
1165 }