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/XKBlib.h> // TODO possibly ifdef this out on non-supporting systems... Solaris (as always)?
  27 #include <GL/glx.h>
  28
  29 #include "quakedef.h"
  30
  31 #include <X11/keysym.h>
  32 #include <X11/cursorfont.h>
  33 #include <X11/xpm.h>
  34
  35 #include <X11/extensions/XShm.h>
  36 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
  37 #include <X11/extensions/xf86dga.h>
  38 #endif
  39 #include <X11/extensions/xf86vmode.h>
  40
  41 #include "nexuiz.xpm"
  42 #include "darkplaces.xpm"
  43
  44 // Tell startup code that we have a client
  45 int cl_available = true;
  46
  47 // note: if we used the XRandR extension we could support refresh rates
  48 qboolean vid_supportrefreshrate = false;
  49
  50 //GLX prototypes
  51 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  52 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  53 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  54 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  55 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  56 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  57
  58 //GLX_ARB_get_proc_address
  59 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  60
  61 static dllfunction_t getprocaddressfuncs[] =
  62 {
  63         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  64         {NULL, NULL}
  65 };
  66
  67 //GLX_SGI_swap_control
  68 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  69
  70 static dllfunction_t swapcontrolfuncs[] =
  71 {
  72         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  73         {NULL, NULL}
  74 };
  75
  76 static Display *vidx11_display = NULL;
  77 static int vidx11_screen;
  78 static Window win;
  79 static GLXContext ctx = NULL;
  80
  81 Atom wm_delete_window_atom;
  82
  83 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  84 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  85                     PointerMotionMask | ButtonMotionMask)
  86 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  87                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  88                 LeaveWindowMask)
  89
  90
  91 static qboolean mouse_avail = true;
  92 static qboolean vid_usingmousegrab = false;
  93 static qboolean vid_usingmouse = false;
  94 static qboolean vid_usinghidecursor = false;
  95 static qboolean vid_usingvsync = false;
  96 static qboolean vid_usevsync = false;
  97 static qboolean vid_x11_hardwaregammasupported = false;
  98 static qboolean vid_x11_dgasupported = false;
  99 static int vid_x11_gammarampsize = 0;
 100
 101 #if !defined(__APPLE__) && !defined(SUNOS)
 102 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "1", "make use of DGA mouse input"};
 103 static qboolean vid_usingdgamouse = false;
 104 #endif
 105
 106 qboolean vidmode_ext = false;
 107
 108 static int win_x, win_y;
 109
 110 static XF86VidModeModeInfo init_vidmode;
 111 static qboolean vid_isfullscreen = false;
 112
 113 static Visual *vidx11_visual;
 114 static Colormap vidx11_colormap;
 115
 116 /*-----------------------------------------------------------------------*/
 117
 118 static int XLateKey(XKeyEvent *ev, char *ascii)
 119 {
 120         int key = 0;
 121         char buf[64];
 122         KeySym keysym, shifted;
 123
 124         keysym = XLookupKeysym (ev, 0);
 125         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 126         *ascii = buf[0];
 127
 128         switch(keysym)
 129         {
 130                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 131                 case XK_Page_Up:         key = K_PGUP; break;
 132
 133                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 134                 case XK_Page_Down:       key = K_PGDN; break;
 135
 136                 case XK_KP_Home: key = K_KP_HOME; break;
 137                 case XK_Home:    key = K_HOME; break;
 138
 139                 case XK_KP_End:  key = K_KP_END; break;
 140                 case XK_End:     key = K_END; break;
 141
 142                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 143                 case XK_Left:    key = K_LEFTARROW; break;
 144
 145                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 146                 case XK_Right:  key = K_RIGHTARROW;             break;
 147
 148                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 149                 case XK_Down:    key = K_DOWNARROW; break;
 150
 151                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 152                 case XK_Up:              key = K_UPARROW;        break;
 153
 154                 case XK_Escape: key = K_ESCAPE;         break;
 155
 156                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 157                 case XK_Return: key = K_ENTER;           break;
 158
 159                 case XK_Tab:            key = K_TAB;                     break;
 160
 161                 case XK_F1:              key = K_F1;                            break;
 162
 163                 case XK_F2:              key = K_F2;                            break;
 164
 165                 case XK_F3:              key = K_F3;                            break;
 166
 167                 case XK_F4:              key = K_F4;                            break;
 168
 169                 case XK_F5:              key = K_F5;                            break;
 170
 171                 case XK_F6:              key = K_F6;                            break;
 172
 173                 case XK_F7:              key = K_F7;                            break;
 174
 175                 case XK_F8:              key = K_F8;                            break;
 176
 177                 case XK_F9:              key = K_F9;                            break;
 178
 179                 case XK_F10:            key = K_F10;                     break;
 180
 181                 case XK_F11:            key = K_F11;                     break;
 182
 183                 case XK_F12:            key = K_F12;                     break;
 184
 185                 case XK_BackSpace: key = K_BACKSPACE; break;
 186
 187                 case XK_KP_Delete: key = K_KP_DEL; break;
 188                 case XK_Delete: key = K_DEL; break;
 189
 190                 case XK_Pause:  key = K_PAUSE;           break;
 191
 192                 case XK_Shift_L:
 193                 case XK_Shift_R:        key = K_SHIFT;          break;
 194
 195                 case XK_Execute:
 196                 case XK_Control_L:
 197                 case XK_Control_R:      key = K_CTRL;            break;
 198
 199                 case XK_Alt_L:
 200                 case XK_Meta_L:
 201                 case XK_ISO_Level3_Shift:
 202                 case XK_Alt_R:
 203                 case XK_Meta_R: key = K_ALT;                    break;
 204
 205                 case XK_KP_Begin: key = K_KP_5; break;
 206
 207                 case XK_Insert:key = K_INS; break;
 208                 case XK_KP_Insert: key = K_KP_INS; break;
 209
 210                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 211                 case XK_KP_Add:  key = K_KP_PLUS; break;
 212                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 213                 case XK_KP_Divide: key = K_KP_SLASH; break;
 214
 215                 case XK_section:        key = '~'; break;
 216
 217                 default:
 218                         if (keysym < 32)
 219                                 break;
 220
 221                         if (keysym >= 'A' && keysym <= 'Z')
 222                                 key = keysym - 'A' + 'a';
 223                         else
 224                                 key = keysym;
 225
 226                         break;
 227         }
 228
 229         return key;
 230 }
 231
 232 static Cursor CreateNullCursor(Display *display, Window root)
 233 {
 234         Pixmap cursormask;
 235         XGCValues xgc;
 236         GC gc;
 237         XColor dummycolour;
 238         Cursor cursor;
 239
 240         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 241         xgc.function = GXclear;
 242         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 243         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 244         dummycolour.pixel = 0;
 245         dummycolour.red = 0;
 246         dummycolour.flags = 04;
 247         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 248         XFreePixmap(display,cursormask);
 249         XFreeGC(display,gc);
 250         return cursor;
 251 }
 252
 253 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 254 {
 255         static int originalmouseparms_num;
 256         static int originalmouseparms_denom;
 257         static int originalmouseparms_threshold;
 258         static qboolean restore_spi;
 259
 260 #if !defined(__APPLE__) && !defined(SUNOS)
 261         qboolean usedgamouse;
 262 #endif
 263
 264         if (!vidx11_display || !win)
 265                 return;
 266
 267         if (relative)
 268                 fullscreengrab = true;
 269
 270         if (!mouse_avail)
 271                 fullscreengrab = relative = hidecursor = false;
 272
 273 #if !defined(__APPLE__) && !defined(SUNOS)
 274         usedgamouse = relative && vid_dgamouse.integer;
 275         if (!vid_x11_dgasupported)
 276                 usedgamouse = false;
 277         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 278                 VID_SetMouse(false, false, false); // ungrab first!
 279 #endif
 280
 281         if (vid_usingmousegrab != fullscreengrab)
 282         {
 283                 vid_usingmousegrab = fullscreengrab;
 284                 cl_ignoremousemoves = 2;
 285                 if (fullscreengrab)
 286                 {
 287                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 288                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 289                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 290                 }
 291                 else
 292                 {
 293                         XUngrabPointer(vidx11_display, CurrentTime);
 294                         XUngrabKeyboard(vidx11_display, CurrentTime);
 295                 }
 296         }
 297
 298         if (relative)
 299         {
 300                 if (!vid_usingmouse)
 301                 {
 302                         XWindowAttributes attribs_1;
 303                         XSetWindowAttributes attribs_2;
 304
 305                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 306                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 307                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 308
 309 #if !defined(__APPLE__) && !defined(SUNOS)
 310                         vid_usingdgamouse = usedgamouse;
 311                         if (usedgamouse)
 312                         {
 313                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 314                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 315                         }
 316                         else
 317 #endif
 318                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 319
 320 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 321 #if !defined(__APPLE__) && !defined(SUNOS)
 322                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 323 #else
 324                         if (!COM_CheckParm ("-noforcemparms"))
 325 #endif
 326                         {
 327                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 328                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 329                                 restore_spi = true;
 330                         }
 331                         else
 332                                 restore_spi = false;
 333
 334                         cl_ignoremousemoves = 2;
 335                         vid_usingmouse = true;
 336                 }
 337         }
 338         else
 339         {
 340                 if (vid_usingmouse)
 341                 {
 342 #if !defined(__APPLE__) && !defined(SUNOS)
 343                         if (vid_usingdgamouse)
 344                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 345                         vid_usingdgamouse = false;
 346 #endif
 347                         cl_ignoremousemoves = 2;
 348
 349                         if (restore_spi)
 350                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 351                         restore_spi = false;
 352
 353                         vid_usingmouse = false;
 354                 }
 355         }
 356
 357         if (vid_usinghidecursor != hidecursor)
 358         {
 359                 vid_usinghidecursor = hidecursor;
 360                 if (hidecursor)
 361                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 362                 else
 363                         XUndefineCursor(vidx11_display, win);
 364         }
 365 }
 366
 367 static keynum_t buttonremap[18] =
 368 {
 369         K_MOUSE1,
 370         K_MOUSE3,
 371         K_MOUSE2,
 372         K_MWHEELUP,
 373         K_MWHEELDOWN,
 374         K_MOUSE4,
 375         K_MOUSE5,
 376         K_MOUSE6,
 377         K_MOUSE7,
 378         K_MOUSE8,
 379         K_MOUSE9,
 380         K_MOUSE10,
 381         K_MOUSE11,
 382         K_MOUSE12,
 383         K_MOUSE13,
 384         K_MOUSE14,
 385         K_MOUSE15,
 386         K_MOUSE16,
 387 };
 388
 389 static void HandleEvents(void)
 390 {
 391         XEvent event;
 392         int key;
 393         char ascii;
 394         qboolean dowarp = false;
 395
 396         if (!vidx11_display)
 397                 return;
 398
 399         while (XPending(vidx11_display))
 400         {
 401                 XNextEvent(vidx11_display, &event);
 402
 403                 switch (event.type)
 404                 {
 405                 case KeyPress:
 406                         // key pressed
 407                         key = XLateKey (&event.xkey, &ascii);
 408                         Key_Event(key, ascii, true);
 409                         break;
 410
 411                 case KeyRelease:
 412                         // key released
 413                         key = XLateKey (&event.xkey, &ascii);
 414                         Key_Event(key, ascii, false);
 415                         break;
 416
 417                 case MotionNotify:
 418                         // mouse moved
 419                         if (vid_usingmouse)
 420                         {
 421 #if !defined(__APPLE__) && !defined(SUNOS)
 422                                 if (vid_usingdgamouse)
 423                                 {
 424                                         in_mouse_x += event.xmotion.x_root;
 425                                         in_mouse_y += event.xmotion.y_root;
 426                                 }
 427                                 else
 428 #endif
 429                                 {
 430                                         if (!event.xmotion.send_event)
 431                                         {
 432                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 433                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 434                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 435                                                 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)
 436                                                         dowarp = true;
 437                                         }
 438                                 }
 439                         }
 440                         in_windowmouse_x = event.xmotion.x;
 441                         in_windowmouse_y = event.xmotion.y;
 442                         break;
 443
 444                 case ButtonPress:
 445                         // mouse button pressed
 446                         if (event.xbutton.button <= 18)
 447                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 448                         else
 449                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 450                         break;
 451
 452                 case ButtonRelease:
 453                         // mouse button released
 454                         if (event.xbutton.button <= 18)
 455                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 456                         else
 457                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 458                         break;
 459
 460                 case CreateNotify:
 461                         // window created
 462                         win_x = event.xcreatewindow.x;
 463                         win_y = event.xcreatewindow.y;
 464                         break;
 465
 466                 case ConfigureNotify:
 467                         // window changed size/location
 468                         win_x = event.xconfigure.x;
 469                         win_y = event.xconfigure.y;
 470                         if(vid_resizable.integer < 2)
 471                         {
 472                                 vid.width = event.xconfigure.width;
 473                                 vid.height = event.xconfigure.height;
 474                         }
 475                         break;
 476                 case DestroyNotify:
 477                         // window has been destroyed
 478                         Sys_Quit(0);
 479                         break;
 480                 case ClientMessage:
 481                         // window manager messages
 482                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 483                                 Sys_Quit(0);
 484                         break;
 485                 case MapNotify:
 486                         if (vid.fullscreen)
 487                                 break;
 488                         // window restored
 489                         vid_hidden = false;
 490                         VID_RestoreSystemGamma();
 491                         break;
 492                 case UnmapNotify:
 493                         if (vid.fullscreen)
 494                                 break;
 495                         // window iconified/rolledup/whatever
 496                         vid_hidden = true;
 497                         VID_RestoreSystemGamma();
 498                         break;
 499                 case FocusIn:
 500                         if (vid.fullscreen)
 501                                 break;
 502                         // window is now the input focus
 503                         vid_activewindow = true;
 504                         break;
 505                 case FocusOut:
 506                         if (vid.fullscreen)
 507                                 break;
 508                         // window is no longer the input focus
 509                         vid_activewindow = false;
 510                         VID_RestoreSystemGamma();
 511                         break;
 512                 case EnterNotify:
 513                         // mouse entered window
 514                         break;
 515                 case LeaveNotify:
 516                         // mouse left window
 517                         break;
 518                 }
 519         }
 520
 521         if (dowarp)
 522         {
 523                 /* move the mouse to the window center again */
 524                 // we'll catch the warp motion by its send_event flag, updating the
 525                 // stored mouse position without adding any delta motion
 526                 XEvent event;
 527                 event.type = MotionNotify;
 528                 event.xmotion.display = vidx11_display;
 529                 event.xmotion.window = win;
 530                 event.xmotion.x = vid.width / 2;
 531                 event.xmotion.y = vid.height / 2;
 532                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 533                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 534         }
 535 }
 536
 537 static void *prjobj = NULL;
 538
 539 static void GL_CloseLibrary(void)
 540 {
 541         if (prjobj)
 542                 dlclose(prjobj);
 543         prjobj = NULL;
 544         gl_driver[0] = 0;
 545         qglXGetProcAddressARB = NULL;
 546         gl_extensions = "";
 547         gl_platform = "";
 548         gl_platformextensions = "";
 549 }
 550
 551 static int GL_OpenLibrary(const char *name)
 552 {
 553         Con_Printf("Loading OpenGL driver %s\n", name);
 554         GL_CloseLibrary();
 555         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 556         {
 557                 Con_Printf("Unable to open symbol list for %s\n", name);
 558                 return false;
 559         }
 560         strlcpy(gl_driver, name, sizeof(gl_driver));
 561         return true;
 562 }
 563
 564 void *GL_GetProcAddress(const char *name)
 565 {
 566         void *p = NULL;
 567         if (qglXGetProcAddressARB != NULL)
 568                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 569         if (p == NULL)
 570                 p = (void *) dlsym(prjobj, name);
 571         return p;
 572 }
 573
 574 void VID_Shutdown(void)
 575 {
 576         if (!ctx || !vidx11_display)
 577                 return;
 578
 579         VID_SetMouse(false, false, false);
 580         VID_RestoreSystemGamma();
 581
 582         // FIXME: glXDestroyContext here?
 583         if (vid_isfullscreen)
 584                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 585         if (win)
 586                 XDestroyWindow(vidx11_display, win);
 587         XCloseDisplay(vidx11_display);
 588
 589         vid_hidden = true;
 590         vid_isfullscreen = false;
 591         vidx11_display = NULL;
 592         win = 0;
 593         ctx = NULL;
 594
 595         GL_CloseLibrary();
 596         Key_ClearStates ();
 597 }
 598
 599 void signal_handler(int sig)
 600 {
 601         Con_Printf("Received signal %d, exiting...\n", sig);
 602         VID_RestoreSystemGamma();
 603         Sys_Quit(1);
 604 }
 605
 606 void InitSig(void)
 607 {
 608         signal(SIGHUP, signal_handler);
 609         signal(SIGINT, signal_handler);
 610         signal(SIGQUIT, signal_handler);
 611         signal(SIGILL, signal_handler);
 612         signal(SIGTRAP, signal_handler);
 613         signal(SIGIOT, signal_handler);
 614         signal(SIGBUS, signal_handler);
 615         signal(SIGFPE, signal_handler);
 616         signal(SIGSEGV, signal_handler);
 617         signal(SIGTERM, signal_handler);
 618 }
 619
 620 void VID_Finish (void)
 621 {
 622         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 623         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 624         {
 625                 vid_usingvsync = vid_usevsync;
 626                 if (qglXSwapIntervalSGI (vid_usevsync))
 627                         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");
 628         }
 629
 630         if (r_render.integer)
 631         {
 632                 CHECKGLERROR
 633                 if (r_speeds.integer || gl_finish.integer)
 634                 {
 635                         qglFinish();CHECKGLERROR
 636                 }
 637                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 638         }
 639
 640         if (vid_x11_hardwaregammasupported)
 641                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 642 }
 643
 644 int VID_SetGamma(unsigned short *ramps, int rampsize)
 645 {
 646         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 647 }
 648
 649 int VID_GetGamma(unsigned short *ramps, int rampsize)
 650 {
 651         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 652 }
 653
 654 void VID_Init(void)
 655 {
 656 #if !defined(__APPLE__) && !defined(SUNOS)
 657         Cvar_RegisterVariable (&vid_dgamouse);
 658 #endif
 659         InitSig(); // trap evil signals
 660 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 661         if (COM_CheckParm ("-nomouse"))
 662                 mouse_avail = false;
 663 }
 664
 665 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 666 {
 667         *attrib++ = GLX_RGBA;
 668         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 669         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 670         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 671         *attrib++ = GLX_DOUBLEBUFFER;
 672         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 673         // if stencil is enabled, ask for alpha too
 674         if (stencil)
 675         {
 676                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 677                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 678         }
 679         if (stereobuffer)
 680                 *attrib++ = GLX_STEREO;
 681         if (samples > 1)
 682         {
 683                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 684                 *attrib++ = 1;
 685                 *attrib++ = GLX_SAMPLES_ARB;
 686                 *attrib++ = samples;
 687         }
 688         *attrib++ = None;
 689 }
 690
 691 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 692 {
 693         int i;
 694         int attrib[32];
 695         XSetWindowAttributes attr;
 696         XClassHint *clshints;
 697         XWMHints *wmhints;
 698         XSizeHints *szhints;
 699         unsigned long mask;
 700         Window root;
 701         XVisualInfo *visinfo;
 702         int MajorVersion, MinorVersion;
 703         const char *drivername;
 704
 705 #if defined(__APPLE__) && defined(__MACH__)
 706         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 707 #else
 708         drivername = "libGL.so.1";
 709 #endif
 710 // 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
 711 // 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
 712 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 713         i = COM_CheckParm("-gl_driver");
 714         if (i && i < com_argc - 1)
 715                 drivername = com_argv[i + 1];
 716         if (!GL_OpenLibrary(drivername))
 717         {
 718                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 719                 return false;
 720         }
 721
 722         if (!(vidx11_display = XOpenDisplay(NULL)))
 723         {
 724                 Con_Print("Couldn't open the X display\n");
 725                 return false;
 726         }
 727
 728         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 729         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 730
 731         vidx11_screen = DefaultScreen(vidx11_display);
 732         root = RootWindow(vidx11_display, vidx11_screen);
 733
 734         // Get video mode list
 735         MajorVersion = MinorVersion = 0;
 736         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 737                 vidmode_ext = false;
 738         else
 739         {
 740                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 741                 vidmode_ext = true;
 742         }
 743
 744         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 745          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 746          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 747          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 748          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 749          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 750         {
 751                 Con_Printf("glX functions not found in %s\n", gl_driver);
 752                 return false;
 753         }
 754
 755         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 756         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 757         if (!visinfo)
 758         {
 759                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 760                 return false;
 761         }
 762
 763         if (vidmode_ext)
 764         {
 765                 int best_fit, best_dist, dist, x, y;
 766
 767                 // Are we going fullscreen?  If so, let's change video mode
 768                 if (fullscreen)
 769                 {
 770                         XF86VidModeModeLine *current_vidmode;
 771                         XF86VidModeModeInfo **vidmodes;
 772                         int num_vidmodes;
 773
 774                         // This nice hack comes from the SDL source code
 775                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 776                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 777
 778                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 779                         best_dist = 9999999;
 780                         best_fit = -1;
 781
 782                         for (i = 0; i < num_vidmodes; i++)
 783                         {
 784                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 785                                         continue;
 786
 787                                 x = width - vidmodes[i]->hdisplay;
 788                                 y = height - vidmodes[i]->vdisplay;
 789                                 dist = (x * x) + (y * y);
 790                                 if (dist < best_dist)
 791                                 {
 792                                         best_dist = dist;
 793                                         best_fit = i;
 794                                 }
 795                         }
 796
 797                         if (best_fit != -1)
 798                         {
 799                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 800                                 // to width/height =, so the window will take the full area of
 801                                 // the mode chosen
 802                                 width = vidmodes[best_fit]->hdisplay;
 803                                 height = vidmodes[best_fit]->vdisplay;
 804
 805                                 // change to the mode
 806                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 807                                 vid_isfullscreen = true;
 808
 809                                 // Move the viewport to top left
 810                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 811                         }
 812                         else
 813                                 fullscreen = 0;
 814
 815                         free(vidmodes);
 816                 }
 817         }
 818
 819         // LordHavoc: save the visual for use in gamma ramp settings later
 820         vidx11_visual = visinfo->visual;
 821
 822         /* window attributes */
 823         attr.background_pixel = 0;
 824         attr.border_pixel = 0;
 825         // LordHavoc: save the colormap for later, too
 826         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 827         attr.event_mask = X_MASK;
 828         if (vid_isfullscreen)
 829         {
 830                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 831                 attr.override_redirect = True;
 832                 attr.backing_store = NotUseful;
 833                 attr.save_under = False;
 834         }
 835         else
 836                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 837
 838         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 839
 840         wmhints = XAllocWMHints();
 841         if(XpmCreatePixmapFromData(vidx11_display, win,
 842                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 843                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 844                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 845
 846         clshints = XAllocClassHint();
 847         clshints->res_name = strdup(gamename);
 848         clshints->res_class = strdup("DarkPlaces");
 849
 850         szhints = XAllocSizeHints();
 851         if(vid_resizable.integer == 0)
 852         {
 853                 szhints->min_width = szhints->max_width = width;
 854                 szhints->min_height = szhints->max_height = height;
 855                 szhints->flags |= PMinSize | PMaxSize;
 856         }
 857
 858         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 859         XFree(clshints);
 860         XFree(wmhints);
 861         XFree(szhints);
 862         //XStoreName(vidx11_display, win, gamename);
 863         XMapWindow(vidx11_display, win);
 864
 865         // LordHavoc: making the close button on a window do the right thing
 866         // seems to involve this mess, sigh...
 867         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 868         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 869
 870         if (vid_isfullscreen)
 871         {
 872                 XMoveWindow(vidx11_display, win, 0, 0);
 873                 XRaiseWindow(vidx11_display, win);
 874                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 875                 XFlush(vidx11_display);
 876                 // Move the viewport to top left
 877                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 878         }
 879
 880         //XSync(vidx11_display, False);
 881
 882         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 883         if (!ctx)
 884         {
 885                 Con_Printf ("glXCreateContext failed\n");
 886                 return false;
 887         }
 888
 889         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 890         {
 891                 Con_Printf ("glXMakeCurrent failed\n");
 892                 return false;
 893         }
 894
 895         XSync(vidx11_display, False);
 896
 897         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 898         {
 899                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 900                 return false;
 901         }
 902
 903         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 904         gl_platform = "GLX";
 905         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 906
 907         gl_videosyncavailable = false;
 908
 909 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 910 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 911 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 912         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 913 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 914 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 915 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 916         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 917
 918         vid_usingmousegrab = false;
 919         vid_usingmouse = false;
 920         vid_usinghidecursor = false;
 921         vid_usingvsync = false;
 922         vid_hidden = false;
 923         vid_activewindow = true;
 924         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 925 #if !defined(__APPLE__) && !defined(SUNOS)
 926         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 927         if (!vid_x11_dgasupported)
 928                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 929 #endif
 930         GL_Init();
 931         return true;
 932 }
 933
 934 void Sys_SendKeyEvents(void)
 935 {
 936         static qboolean sound_active = true;
 937
 938         // enable/disable sound on focus gain/loss
 939         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 940         {
 941                 if (!sound_active)
 942                 {
 943                         S_UnblockSound ();
 944                         sound_active = true;
 945                 }
 946         }
 947         else
 948         {
 949                 if (sound_active)
 950                 {
 951                         S_BlockSound ();
 952                         sound_active = false;
 953                 }
 954         }
 955
 956         HandleEvents();
 957 }
 958
 959 void IN_Move (void)
 960 {
 961 }