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 <GL/glx.h>
  27
  28 #include "quakedef.h"
  29
  30 #include <X11/keysym.h>
  31 #include <X11/cursorfont.h>
  32 #include <X11/xpm.h>
  33
  34 #include <X11/extensions/XShm.h>
  35 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
  36 #include <X11/extensions/xf86dga.h>
  37 #endif
  38 #include <X11/extensions/xf86vmode.h>
  39
  40 #include "nexuiz.xpm"
  41 #include "darkplaces.xpm"
  42
  43 // Tell startup code that we have a client
  44 int cl_available = true;
  45
  46 // note: if we used the XRandR extension we could support refresh rates
  47 qboolean vid_supportrefreshrate = false;
  48
  49 //GLX prototypes
  50 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  51 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  52 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  53 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  54 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  55 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  56
  57 //GLX_ARB_get_proc_address
  58 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  59
  60 static dllfunction_t getprocaddressfuncs[] =
  61 {
  62         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  63         {NULL, NULL}
  64 };
  65
  66 //GLX_SGI_swap_control
  67 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  68
  69 static dllfunction_t swapcontrolfuncs[] =
  70 {
  71         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  72         {NULL, NULL}
  73 };
  74
  75 static Display *vidx11_display = NULL;
  76 static int vidx11_screen;
  77 static Window win;
  78 static GLXContext ctx = NULL;
  79
  80 Atom wm_delete_window_atom;
  81
  82 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  83 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  84                     PointerMotionMask | ButtonMotionMask)
  85 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  86                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  87                 LeaveWindowMask)
  88
  89
  90 static qboolean mouse_avail = true;
  91 static qboolean vid_usingmousegrab = false;
  92 static qboolean vid_usingmouse = false;
  93 static qboolean vid_usinghidecursor = false;
  94 static qboolean vid_usingvsync = false;
  95 static qboolean vid_usevsync = false;
  96 static qboolean vid_x11_hardwaregammasupported = false;
  97 static qboolean vid_x11_dgasupported = false;
  98 static int vid_x11_gammarampsize = 0;
  99
 100 #if !defined(__APPLE__) && !defined(SUNOS)
 101 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "1", "make use of DGA mouse input"};
 102 static qboolean vid_usingdgamouse = false;
 103 #endif
 104
 105 qboolean vidmode_ext = false;
 106
 107 static int win_x, win_y;
 108
 109 static XF86VidModeModeInfo init_vidmode;
 110 static qboolean vid_isfullscreen = false;
 111
 112 static Visual *vidx11_visual;
 113 static Colormap vidx11_colormap;
 114
 115 /*-----------------------------------------------------------------------*/
 116
 117 static int XLateKey(XKeyEvent *ev, char *ascii)
 118 {
 119         int key = 0;
 120         char buf[64];
 121         KeySym keysym, shifted;
 122
 123         keysym = XLookupKeysym (ev, 0);
 124         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 125         *ascii = buf[0];
 126
 127         switch(keysym)
 128         {
 129                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 130                 case XK_Page_Up:         key = K_PGUP; break;
 131
 132                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 133                 case XK_Page_Down:       key = K_PGDN; break;
 134
 135                 case XK_KP_Home: key = K_KP_HOME; break;
 136                 case XK_Home:    key = K_HOME; break;
 137
 138                 case XK_KP_End:  key = K_KP_END; break;
 139                 case XK_End:     key = K_END; break;
 140
 141                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 142                 case XK_Left:    key = K_LEFTARROW; break;
 143
 144                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 145                 case XK_Right:  key = K_RIGHTARROW;             break;
 146
 147                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 148                 case XK_Down:    key = K_DOWNARROW; break;
 149
 150                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 151                 case XK_Up:              key = K_UPARROW;        break;
 152
 153                 case XK_Escape: key = K_ESCAPE;         break;
 154
 155                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 156                 case XK_Return: key = K_ENTER;           break;
 157
 158                 case XK_Tab:            key = K_TAB;                     break;
 159
 160                 case XK_F1:              key = K_F1;                            break;
 161
 162                 case XK_F2:              key = K_F2;                            break;
 163
 164                 case XK_F3:              key = K_F3;                            break;
 165
 166                 case XK_F4:              key = K_F4;                            break;
 167
 168                 case XK_F5:              key = K_F5;                            break;
 169
 170                 case XK_F6:              key = K_F6;                            break;
 171
 172                 case XK_F7:              key = K_F7;                            break;
 173
 174                 case XK_F8:              key = K_F8;                            break;
 175
 176                 case XK_F9:              key = K_F9;                            break;
 177
 178                 case XK_F10:            key = K_F10;                     break;
 179
 180                 case XK_F11:            key = K_F11;                     break;
 181
 182                 case XK_F12:            key = K_F12;                     break;
 183
 184                 case XK_BackSpace: key = K_BACKSPACE; break;
 185
 186                 case XK_KP_Delete: key = K_KP_DEL; break;
 187                 case XK_Delete: key = K_DEL; break;
 188
 189                 case XK_Pause:  key = K_PAUSE;           break;
 190
 191                 case XK_Shift_L:
 192                 case XK_Shift_R:        key = K_SHIFT;          break;
 193
 194                 case XK_Execute:
 195                 case XK_Control_L:
 196                 case XK_Control_R:      key = K_CTRL;            break;
 197
 198                 case XK_Alt_L:
 199                 case XK_Meta_L:
 200                 case XK_ISO_Level3_Shift:
 201                 case XK_Alt_R:
 202                 case XK_Meta_R: key = K_ALT;                    break;
 203
 204                 case XK_KP_Begin: key = K_KP_5; break;
 205
 206                 case XK_Insert:key = K_INS; break;
 207                 case XK_KP_Insert: key = K_KP_INS; break;
 208
 209                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 210                 case XK_KP_Add:  key = K_KP_PLUS; break;
 211                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 212                 case XK_KP_Divide: key = K_KP_SLASH; break;
 213
 214                 case XK_section:        key = '~'; break;
 215
 216                 default:
 217                         if (keysym < 32)
 218                                 break;
 219
 220                         if (keysym >= 'A' && keysym <= 'Z')
 221                                 key = keysym - 'A' + 'a';
 222                         else
 223                                 key = keysym;
 224
 225                         break;
 226         }
 227
 228         return key;
 229 }
 230
 231 static Cursor CreateNullCursor(Display *display, Window root)
 232 {
 233         Pixmap cursormask;
 234         XGCValues xgc;
 235         GC gc;
 236         XColor dummycolour;
 237         Cursor cursor;
 238
 239         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 240         xgc.function = GXclear;
 241         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 242         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 243         dummycolour.pixel = 0;
 244         dummycolour.red = 0;
 245         dummycolour.flags = 04;
 246         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 247         XFreePixmap(display,cursormask);
 248         XFreeGC(display,gc);
 249         return cursor;
 250 }
 251
 252 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 253 {
 254         qboolean usedgamouse;
 255
 256         if (!vidx11_display || !win)
 257                 return;
 258
 259         if (relative)
 260                 fullscreengrab = true;
 261
 262         if (!mouse_avail)
 263                 fullscreengrab = relative = hidecursor = false;
 264
 265         usedgamouse = relative && vid_dgamouse.integer;
 266 #if !defined(__APPLE__) && !defined(SUNOS)
 267         if (!vid_x11_dgasupported)
 268                 usedgamouse = false;
 269         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 270                 VID_SetMouse(false, false, false); // ungrab first!
 271 #endif
 272
 273         if (vid_usingmousegrab != fullscreengrab)
 274         {
 275                 vid_usingmousegrab = fullscreengrab;
 276                 cl_ignoremousemoves = 2;
 277                 if (fullscreengrab)
 278                 {
 279                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 280                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 281                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 282                 }
 283                 else
 284                 {
 285                         XUngrabPointer(vidx11_display, CurrentTime);
 286                         XUngrabKeyboard(vidx11_display, CurrentTime);
 287                 }
 288         }
 289
 290         if (relative)
 291         {
 292                 if (!vid_usingmouse)
 293                 {
 294                         XWindowAttributes attribs_1;
 295                         XSetWindowAttributes attribs_2;
 296
 297                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 298                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 299                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 300
 301 #if !defined(__APPLE__) && !defined(SUNOS)
 302                         vid_usingdgamouse = usedgamouse;
 303                         if (usedgamouse)
 304                         {
 305                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 306                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 307                         }
 308                         else
 309 #endif
 310                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 311
 312                         cl_ignoremousemoves = 2;
 313                         vid_usingmouse = true;
 314                 }
 315         }
 316         else
 317         {
 318                 if (vid_usingmouse)
 319                 {
 320 #if !defined(__APPLE__) && !defined(SUNOS)
 321                         if (vid_usingdgamouse)
 322                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 323                         vid_usingdgamouse = false;
 324 #endif
 325                         cl_ignoremousemoves = 2;
 326                         vid_usingmouse = false;
 327                 }
 328         }
 329
 330         if (vid_usinghidecursor != hidecursor)
 331         {
 332                 vid_usinghidecursor = hidecursor;
 333                 if (hidecursor)
 334                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 335                 else
 336                         XUndefineCursor(vidx11_display, win);
 337         }
 338 }
 339
 340 static keynum_t buttonremap[18] =
 341 {
 342         K_MOUSE1,
 343         K_MOUSE3,
 344         K_MOUSE2,
 345         K_MWHEELUP,
 346         K_MWHEELDOWN,
 347         K_MOUSE4,
 348         K_MOUSE5,
 349         K_MOUSE6,
 350         K_MOUSE7,
 351         K_MOUSE8,
 352         K_MOUSE9,
 353         K_MOUSE10,
 354         K_MOUSE11,
 355         K_MOUSE12,
 356         K_MOUSE13,
 357         K_MOUSE14,
 358         K_MOUSE15,
 359         K_MOUSE16,
 360 };
 361
 362 static void HandleEvents(void)
 363 {
 364         XEvent event;
 365         int key;
 366         char ascii;
 367         qboolean dowarp = false;
 368
 369         if (!vidx11_display)
 370                 return;
 371
 372         while (XPending(vidx11_display))
 373         {
 374                 XNextEvent(vidx11_display, &event);
 375
 376                 switch (event.type)
 377                 {
 378                 case KeyPress:
 379                         // key pressed
 380                         key = XLateKey (&event.xkey, &ascii);
 381                         Key_Event(key, ascii, true);
 382                         break;
 383
 384                 case KeyRelease:
 385                         // key released
 386                         key = XLateKey (&event.xkey, &ascii);
 387                         Key_Event(key, ascii, false);
 388                         break;
 389
 390                 case MotionNotify:
 391                         // mouse moved
 392                         if (vid_usingmouse)
 393                         {
 394 #if !defined(__APPLE__) && !defined(SUNOS)
 395                                 if (vid_usingdgamouse)
 396                                 {
 397                                         in_mouse_x += event.xmotion.x_root;
 398                                         in_mouse_y += event.xmotion.y_root;
 399                                 }
 400                                 else
 401 #endif
 402                                 {
 403                                         if (!event.xmotion.send_event)
 404                                         {
 405                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 406                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 407                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 408                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 409                                                         dowarp = true;
 410                                         }
 411                                 }
 412                         }
 413                         in_windowmouse_x = event.xmotion.x;
 414                         in_windowmouse_y = event.xmotion.y;
 415                         break;
 416
 417                 case ButtonPress:
 418                         // mouse button pressed
 419                         if (event.xbutton.button <= 18)
 420                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 421                         else
 422                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 423                         break;
 424
 425                 case ButtonRelease:
 426                         // mouse button released
 427                         if (event.xbutton.button <= 18)
 428                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 429                         else
 430                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 431                         break;
 432
 433                 case CreateNotify:
 434                         // window created
 435                         win_x = event.xcreatewindow.x;
 436                         win_y = event.xcreatewindow.y;
 437                         break;
 438
 439                 case ConfigureNotify:
 440                         // window changed size/location
 441                         win_x = event.xconfigure.x;
 442                         win_y = event.xconfigure.y;
 443                         if(vid_resizable.integer < 2)
 444                         {
 445                                 vid.width = event.xconfigure.width;
 446                                 vid.height = event.xconfigure.height;
 447                         }
 448                         break;
 449                 case DestroyNotify:
 450                         // window has been destroyed
 451                         Sys_Quit(0);
 452                         break;
 453                 case ClientMessage:
 454                         // window manager messages
 455                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 456                                 Sys_Quit(0);
 457                         break;
 458                 case MapNotify:
 459                         if (vid.fullscreen)
 460                                 break;
 461                         // window restored
 462                         vid_hidden = false;
 463                         VID_RestoreSystemGamma();
 464                         break;
 465                 case UnmapNotify:
 466                         if (vid.fullscreen)
 467                                 break;
 468                         // window iconified/rolledup/whatever
 469                         vid_hidden = true;
 470                         VID_RestoreSystemGamma();
 471                         break;
 472                 case FocusIn:
 473                         if (vid.fullscreen)
 474                                 break;
 475                         // window is now the input focus
 476                         vid_activewindow = true;
 477                         break;
 478                 case FocusOut:
 479                         if (vid.fullscreen)
 480                                 break;
 481                         // window is no longer the input focus
 482                         vid_activewindow = false;
 483                         VID_RestoreSystemGamma();
 484                         break;
 485                 case EnterNotify:
 486                         // mouse entered window
 487                         break;
 488                 case LeaveNotify:
 489                         // mouse left window
 490                         break;
 491                 }
 492         }
 493
 494         if (dowarp)
 495         {
 496                 /* move the mouse to the window center again */
 497                 // we'll catch the warp motion by its send_event flag, updating the
 498                 // stored mouse position without adding any delta motion
 499                 XEvent event;
 500                 event.type = MotionNotify;
 501                 event.xmotion.display = vidx11_display;
 502                 event.xmotion.window = win;
 503                 event.xmotion.x = vid.width / 2;
 504                 event.xmotion.y = vid.height / 2;
 505                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 506                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 507         }
 508 }
 509
 510 static void *prjobj = NULL;
 511
 512 static void GL_CloseLibrary(void)
 513 {
 514         if (prjobj)
 515                 dlclose(prjobj);
 516         prjobj = NULL;
 517         gl_driver[0] = 0;
 518         qglXGetProcAddressARB = NULL;
 519         gl_extensions = "";
 520         gl_platform = "";
 521         gl_platformextensions = "";
 522 }
 523
 524 static int GL_OpenLibrary(const char *name)
 525 {
 526         Con_Printf("Loading OpenGL driver %s\n", name);
 527         GL_CloseLibrary();
 528         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 529         {
 530                 Con_Printf("Unable to open symbol list for %s\n", name);
 531                 return false;
 532         }
 533         strlcpy(gl_driver, name, sizeof(gl_driver));
 534         return true;
 535 }
 536
 537 void *GL_GetProcAddress(const char *name)
 538 {
 539         void *p = NULL;
 540         if (qglXGetProcAddressARB != NULL)
 541                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 542         if (p == NULL)
 543                 p = (void *) dlsym(prjobj, name);
 544         return p;
 545 }
 546
 547 void VID_Shutdown(void)
 548 {
 549         if (!ctx || !vidx11_display)
 550                 return;
 551
 552         VID_SetMouse(false, false, false);
 553         VID_RestoreSystemGamma();
 554
 555         // FIXME: glXDestroyContext here?
 556         if (vid_isfullscreen)
 557                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 558         if (win)
 559                 XDestroyWindow(vidx11_display, win);
 560         XCloseDisplay(vidx11_display);
 561
 562         vid_hidden = true;
 563         vid_isfullscreen = false;
 564         vidx11_display = NULL;
 565         win = 0;
 566         ctx = NULL;
 567
 568         GL_CloseLibrary();
 569         Key_ClearStates ();
 570 }
 571
 572 void signal_handler(int sig)
 573 {
 574         Con_Printf("Received signal %d, exiting...\n", sig);
 575         VID_RestoreSystemGamma();
 576         Sys_Quit(1);
 577 }
 578
 579 void InitSig(void)
 580 {
 581         signal(SIGHUP, signal_handler);
 582         signal(SIGINT, signal_handler);
 583         signal(SIGQUIT, signal_handler);
 584         signal(SIGILL, signal_handler);
 585         signal(SIGTRAP, signal_handler);
 586         signal(SIGIOT, signal_handler);
 587         signal(SIGBUS, signal_handler);
 588         signal(SIGFPE, signal_handler);
 589         signal(SIGSEGV, signal_handler);
 590         signal(SIGTERM, signal_handler);
 591 }
 592
 593 void VID_Finish (void)
 594 {
 595         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 596         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 597         {
 598                 vid_usingvsync = vid_usevsync;
 599                 if (qglXSwapIntervalSGI (vid_usevsync))
 600                         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");
 601         }
 602
 603         if (r_render.integer)
 604         {
 605                 CHECKGLERROR
 606                 if (r_speeds.integer || gl_finish.integer)
 607                 {
 608                         qglFinish();CHECKGLERROR
 609                 }
 610                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 611         }
 612
 613         if (vid_x11_hardwaregammasupported)
 614                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 615 }
 616
 617 int VID_SetGamma(unsigned short *ramps, int rampsize)
 618 {
 619         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 620 }
 621
 622 int VID_GetGamma(unsigned short *ramps, int rampsize)
 623 {
 624         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 625 }
 626
 627 void VID_Init(void)
 628 {
 629 #if !defined(__APPLE__) && !defined(SUNOS)
 630         Cvar_RegisterVariable (&vid_dgamouse);
 631 #endif
 632         InitSig(); // trap evil signals
 633 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 634         if (COM_CheckParm ("-nomouse"))
 635                 mouse_avail = false;
 636 }
 637
 638 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 639 {
 640         *attrib++ = GLX_RGBA;
 641         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 642         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 643         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 644         *attrib++ = GLX_DOUBLEBUFFER;
 645         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 646         // if stencil is enabled, ask for alpha too
 647         if (stencil)
 648         {
 649                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 650                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 651         }
 652         if (stereobuffer)
 653                 *attrib++ = GLX_STEREO;
 654         if (samples > 1)
 655         {
 656                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 657                 *attrib++ = 1;
 658                 *attrib++ = GLX_SAMPLES_ARB;
 659                 *attrib++ = samples;
 660         }
 661         *attrib++ = None;
 662 }
 663
 664 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 665 {
 666         int i;
 667         int attrib[32];
 668         XSetWindowAttributes attr;
 669         XClassHint *clshints;
 670         XWMHints *wmhints;
 671         XSizeHints *szhints;
 672         unsigned long mask;
 673         Window root;
 674         XVisualInfo *visinfo;
 675         int MajorVersion, MinorVersion;
 676         const char *drivername;
 677
 678 #if defined(__APPLE__) && defined(__MACH__)
 679         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 680 #else
 681         drivername = "libGL.so.1";
 682 #endif
 683 // 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
 684 // 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
 685 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 686         i = COM_CheckParm("-gl_driver");
 687         if (i && i < com_argc - 1)
 688                 drivername = com_argv[i + 1];
 689         if (!GL_OpenLibrary(drivername))
 690         {
 691                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 692                 return false;
 693         }
 694
 695         if (!(vidx11_display = XOpenDisplay(NULL)))
 696         {
 697                 Con_Print("Couldn't open the X display\n");
 698                 return false;
 699         }
 700
 701         vidx11_screen = DefaultScreen(vidx11_display);
 702         root = RootWindow(vidx11_display, vidx11_screen);
 703
 704         // Get video mode list
 705         MajorVersion = MinorVersion = 0;
 706         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 707                 vidmode_ext = false;
 708         else
 709         {
 710                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 711                 vidmode_ext = true;
 712         }
 713
 714         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 715          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 716          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 717          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 718          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 719          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 720         {
 721                 Con_Printf("glX functions not found in %s\n", gl_driver);
 722                 return false;
 723         }
 724
 725         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 726         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 727         if (!visinfo && (samples == 1))
 728         {
 729                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
 730                  * entirely without one */
 731                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
 732                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 733         }
 734         if (!visinfo)
 735         {
 736                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 737                 return false;
 738         }
 739
 740         if (vidmode_ext)
 741         {
 742                 int best_fit, best_dist, dist, x, y;
 743
 744                 // Are we going fullscreen?  If so, let's change video mode
 745                 if (fullscreen)
 746                 {
 747                         XF86VidModeModeLine *current_vidmode;
 748                         XF86VidModeModeInfo **vidmodes;
 749                         int num_vidmodes;
 750
 751                         // This nice hack comes from the SDL source code
 752                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 753                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 754
 755                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 756                         best_dist = 9999999;
 757                         best_fit = -1;
 758
 759                         for (i = 0; i < num_vidmodes; i++)
 760                         {
 761                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 762                                         continue;
 763
 764                                 x = width - vidmodes[i]->hdisplay;
 765                                 y = height - vidmodes[i]->vdisplay;
 766                                 dist = (x * x) + (y * y);
 767                                 if (dist < best_dist)
 768                                 {
 769                                         best_dist = dist;
 770                                         best_fit = i;
 771                                 }
 772                         }
 773
 774                         if (best_fit != -1)
 775                         {
 776                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 777                                 // to width/height =, so the window will take the full area of
 778                                 // the mode chosen
 779                                 width = vidmodes[best_fit]->hdisplay;
 780                                 height = vidmodes[best_fit]->vdisplay;
 781
 782                                 // change to the mode
 783                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 784                                 vid_isfullscreen = true;
 785
 786                                 // Move the viewport to top left
 787                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 788                         }
 789                         else
 790                                 fullscreen = 0;
 791
 792                         free(vidmodes);
 793                 }
 794         }
 795
 796         // LordHavoc: save the visual for use in gamma ramp settings later
 797         vidx11_visual = visinfo->visual;
 798
 799         /* window attributes */
 800         attr.background_pixel = 0;
 801         attr.border_pixel = 0;
 802         // LordHavoc: save the colormap for later, too
 803         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 804         attr.event_mask = X_MASK;
 805         if (vid_isfullscreen)
 806         {
 807                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 808                 attr.override_redirect = True;
 809                 attr.backing_store = NotUseful;
 810                 attr.save_under = False;
 811         }
 812         else
 813                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 814
 815         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 816
 817         wmhints = XAllocWMHints();
 818         if(XpmCreatePixmapFromData(vidx11_display, win,
 819                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 820                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 821                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 822
 823         clshints = XAllocClassHint();
 824         clshints->res_name = strdup(gamename);
 825         clshints->res_class = strdup("DarkPlaces");
 826
 827         szhints = XAllocSizeHints();
 828         if(vid_resizable.integer == 0)
 829         {
 830                 szhints->min_width = szhints->max_width = width;
 831                 szhints->min_height = szhints->max_height = height;
 832                 szhints->flags |= PMinSize | PMaxSize;
 833         }
 834
 835         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 836         XFree(clshints);
 837         XFree(wmhints);
 838         XFree(szhints);
 839         //XStoreName(vidx11_display, win, gamename);
 840         XMapWindow(vidx11_display, win);
 841
 842         // LordHavoc: making the close button on a window do the right thing
 843         // seems to involve this mess, sigh...
 844         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 845         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 846
 847         if (vid_isfullscreen)
 848         {
 849                 XMoveWindow(vidx11_display, win, 0, 0);
 850                 XRaiseWindow(vidx11_display, win);
 851                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 852                 XFlush(vidx11_display);
 853                 // Move the viewport to top left
 854                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 855         }
 856
 857         //XSync(vidx11_display, False);
 858
 859         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 860         if (!ctx)
 861         {
 862                 Con_Printf ("glXCreateContext failed\n");
 863                 return false;
 864         }
 865
 866         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 867         {
 868                 Con_Printf ("glXMakeCurrent failed\n");
 869                 return false;
 870         }
 871
 872         XSync(vidx11_display, False);
 873
 874         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 875         {
 876                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 877                 return false;
 878         }
 879
 880         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 881         gl_platform = "GLX";
 882         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 883
 884         gl_videosyncavailable = false;
 885
 886 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 887 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 888 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 889         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 890 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 891 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 892 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 893         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 894
 895         vid_usingmousegrab = false;
 896         vid_usingmouse = false;
 897         vid_usinghidecursor = false;
 898         vid_usingvsync = false;
 899         vid_hidden = false;
 900         vid_activewindow = true;
 901         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 902 #if !defined(__APPLE__) && !defined(SUNOS)
 903         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 904         if (!vid_x11_dgasupported)
 905                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 906 #endif
 907         GL_Init();
 908         return true;
 909 }
 910
 911 void Sys_SendKeyEvents(void)
 912 {
 913         static qboolean sound_active = true;
 914
 915         // enable/disable sound on focus gain/loss
 916         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 917         {
 918                 if (!sound_active)
 919                 {
 920                         S_UnblockSound ();
 921                         sound_active = true;
 922                 }
 923         }
 924         else
 925         {
 926                 if (sound_active)
 927                 {
 928                         S_BlockSound ();
 929                         sound_active = false;
 930                 }
 931         }
 932
 933         HandleEvents();
 934 }
 935
 936 void IN_Move (void)
 937 {
 938 }