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 (!mouse_avail)
 260                 fullscreengrab = relative = hidecursor = false;
 261
 262         usedgamouse = relative && vid_dgamouse.integer;
 263 #if !defined(__APPLE__) && !defined(SUNOS)
 264         if (!vid_x11_dgasupported)
 265                 usedgamouse = false;
 266         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 267                 VID_SetMouse(false, false, false); // ungrab first!
 268 #endif
 269
 270         if (vid_usingmousegrab != fullscreengrab)
 271         {
 272                 vid_usingmousegrab = fullscreengrab;
 273                 cl_ignoremousemoves = 2;
 274                 if (fullscreengrab)
 275                 {
 276                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 277                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 278                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 279                 }
 280                 else
 281                 {
 282                         XUngrabPointer(vidx11_display, CurrentTime);
 283                         XUngrabKeyboard(vidx11_display, CurrentTime);
 284                 }
 285         }
 286
 287         if (relative)
 288         {
 289                 if (!vid_usingmouse)
 290                 {
 291                         XWindowAttributes attribs_1;
 292                         XSetWindowAttributes attribs_2;
 293
 294                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 295                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 296                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 297
 298 #if !defined(__APPLE__) && !defined(SUNOS)
 299                         vid_usingdgamouse = usedgamouse;
 300                         if (usedgamouse)
 301                         {
 302                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 303                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 304                         }
 305                         else
 306 #endif
 307                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 308
 309                         cl_ignoremousemoves = 2;
 310                         vid_usingmouse = true;
 311                 }
 312         }
 313         else
 314         {
 315                 if (vid_usingmouse)
 316                 {
 317 #if !defined(__APPLE__) && !defined(SUNOS)
 318                         if (vid_usingdgamouse)
 319                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 320                         vid_usingdgamouse = false;
 321 #endif
 322                         cl_ignoremousemoves = 2;
 323                         vid_usingmouse = false;
 324                 }
 325         }
 326
 327         if (vid_usinghidecursor != hidecursor)
 328         {
 329                 vid_usinghidecursor = hidecursor;
 330                 if (hidecursor)
 331                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 332                 else
 333                         XUndefineCursor(vidx11_display, win);
 334         }
 335 }
 336
 337 static keynum_t buttonremap[18] =
 338 {
 339         K_MOUSE1,
 340         K_MOUSE3,
 341         K_MOUSE2,
 342         K_MWHEELUP,
 343         K_MWHEELDOWN,
 344         K_MOUSE4,
 345         K_MOUSE5,
 346         K_MOUSE6,
 347         K_MOUSE7,
 348         K_MOUSE8,
 349         K_MOUSE9,
 350         K_MOUSE10,
 351         K_MOUSE11,
 352         K_MOUSE12,
 353         K_MOUSE13,
 354         K_MOUSE14,
 355         K_MOUSE15,
 356         K_MOUSE16,
 357 };
 358
 359 static void HandleEvents(void)
 360 {
 361         XEvent event;
 362         int key;
 363         char ascii;
 364         qboolean dowarp = false;
 365
 366         if (!vidx11_display)
 367                 return;
 368
 369         while (XPending(vidx11_display))
 370         {
 371                 XNextEvent(vidx11_display, &event);
 372
 373                 switch (event.type)
 374                 {
 375                 case KeyPress:
 376                         // key pressed
 377                         key = XLateKey (&event.xkey, &ascii);
 378                         Key_Event(key, ascii, true);
 379                         break;
 380
 381                 case KeyRelease:
 382                         // key released
 383                         key = XLateKey (&event.xkey, &ascii);
 384                         Key_Event(key, ascii, false);
 385                         break;
 386
 387                 case MotionNotify:
 388                         // mouse moved
 389                         if (vid_usingmouse)
 390                         {
 391 #if !defined(__APPLE__) && !defined(SUNOS)
 392                                 if (vid_usingdgamouse)
 393                                 {
 394                                         in_mouse_x += event.xmotion.x_root;
 395                                         in_mouse_y += event.xmotion.y_root;
 396                                 }
 397                                 else
 398 #endif
 399                                 {
 400                                         if (!event.xmotion.send_event)
 401                                         {
 402                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 403                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 404                                                 if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 405                                                 //if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 406                                                         dowarp = true;
 407                                         }
 408                                 }
 409                         }
 410                         in_windowmouse_x = event.xmotion.x;
 411                         in_windowmouse_y = event.xmotion.y;
 412                         break;
 413
 414                 case ButtonPress:
 415                         // mouse button pressed
 416                         if (event.xbutton.button <= 18)
 417                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 418                         else
 419                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 420                         break;
 421
 422                 case ButtonRelease:
 423                         // mouse button released
 424                         if (event.xbutton.button <= 18)
 425                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 426                         else
 427                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 428                         break;
 429
 430                 case CreateNotify:
 431                         // window created
 432                         win_x = event.xcreatewindow.x;
 433                         win_y = event.xcreatewindow.y;
 434                         break;
 435
 436                 case ConfigureNotify:
 437                         // window changed size/location
 438                         win_x = event.xconfigure.x;
 439                         win_y = event.xconfigure.y;
 440                         if(vid_resizable.integer < 2)
 441                         {
 442                                 vid.width = event.xconfigure.width;
 443                                 vid.height = event.xconfigure.height;
 444                         }
 445                         break;
 446                 case DestroyNotify:
 447                         // window has been destroyed
 448                         Sys_Quit(0);
 449                         break;
 450                 case ClientMessage:
 451                         // window manager messages
 452                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 453                                 Sys_Quit(0);
 454                         break;
 455                 case MapNotify:
 456                         if (vid.fullscreen)
 457                                 break;
 458                         // window restored
 459                         vid_hidden = false;
 460                         VID_RestoreSystemGamma();
 461                         break;
 462                 case UnmapNotify:
 463                         if (vid.fullscreen)
 464                                 break;
 465                         // window iconified/rolledup/whatever
 466                         vid_hidden = true;
 467                         VID_RestoreSystemGamma();
 468                         break;
 469                 case FocusIn:
 470                         if (vid.fullscreen)
 471                                 break;
 472                         // window is now the input focus
 473                         vid_activewindow = true;
 474                         break;
 475                 case FocusOut:
 476                         if (vid.fullscreen)
 477                                 break;
 478                         // window is no longer the input focus
 479                         vid_activewindow = false;
 480                         VID_RestoreSystemGamma();
 481                         break;
 482                 case EnterNotify:
 483                         // mouse entered window
 484                         break;
 485                 case LeaveNotify:
 486                         // mouse left window
 487                         break;
 488                 }
 489         }
 490
 491         if (dowarp)
 492         {
 493                 /* move the mouse to the window center again */
 494                 in_windowmouse_x = (int)(vid.width / 2);
 495                 in_windowmouse_y = (int)(vid.height / 2);
 496                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, (int)in_windowmouse_x, (int)in_windowmouse_y);
 497         }
 498 }
 499
 500 static void *prjobj = NULL;
 501
 502 static void GL_CloseLibrary(void)
 503 {
 504         if (prjobj)
 505                 dlclose(prjobj);
 506         prjobj = NULL;
 507         gl_driver[0] = 0;
 508         qglXGetProcAddressARB = NULL;
 509         gl_extensions = "";
 510         gl_platform = "";
 511         gl_platformextensions = "";
 512 }
 513
 514 static int GL_OpenLibrary(const char *name)
 515 {
 516         Con_Printf("Loading OpenGL driver %s\n", name);
 517         GL_CloseLibrary();
 518         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 519         {
 520                 Con_Printf("Unable to open symbol list for %s\n", name);
 521                 return false;
 522         }
 523         strlcpy(gl_driver, name, sizeof(gl_driver));
 524         return true;
 525 }
 526
 527 void *GL_GetProcAddress(const char *name)
 528 {
 529         void *p = NULL;
 530         if (qglXGetProcAddressARB != NULL)
 531                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 532         if (p == NULL)
 533                 p = (void *) dlsym(prjobj, name);
 534         return p;
 535 }
 536
 537 void VID_Shutdown(void)
 538 {
 539         if (!ctx || !vidx11_display)
 540                 return;
 541
 542         VID_SetMouse(false, false, false);
 543         VID_RestoreSystemGamma();
 544
 545         // FIXME: glXDestroyContext here?
 546         if (vid_isfullscreen)
 547                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 548         if (win)
 549                 XDestroyWindow(vidx11_display, win);
 550         XCloseDisplay(vidx11_display);
 551
 552         vid_hidden = true;
 553         vid_isfullscreen = false;
 554         vidx11_display = NULL;
 555         win = 0;
 556         ctx = NULL;
 557
 558         GL_CloseLibrary();
 559         Key_ClearStates ();
 560 }
 561
 562 void signal_handler(int sig)
 563 {
 564         Con_Printf("Received signal %d, exiting...\n", sig);
 565         VID_RestoreSystemGamma();
 566         Sys_Quit(1);
 567 }
 568
 569 void InitSig(void)
 570 {
 571         signal(SIGHUP, signal_handler);
 572         signal(SIGINT, signal_handler);
 573         signal(SIGQUIT, signal_handler);
 574         signal(SIGILL, signal_handler);
 575         signal(SIGTRAP, signal_handler);
 576         signal(SIGIOT, signal_handler);
 577         signal(SIGBUS, signal_handler);
 578         signal(SIGFPE, signal_handler);
 579         signal(SIGSEGV, signal_handler);
 580         signal(SIGTERM, signal_handler);
 581 }
 582
 583 void VID_Finish (void)
 584 {
 585         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 586         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 587         {
 588                 vid_usingvsync = vid_usevsync;
 589                 if (qglXSwapIntervalSGI (vid_usevsync))
 590                         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");
 591         }
 592
 593         if (r_render.integer)
 594         {
 595                 CHECKGLERROR
 596                 if (r_speeds.integer || gl_finish.integer)
 597                 {
 598                         qglFinish();CHECKGLERROR
 599                 }
 600                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 601         }
 602
 603         if (vid_x11_hardwaregammasupported)
 604                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 605 }
 606
 607 int VID_SetGamma(unsigned short *ramps, int rampsize)
 608 {
 609         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 610 }
 611
 612 int VID_GetGamma(unsigned short *ramps, int rampsize)
 613 {
 614         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 615 }
 616
 617 void VID_Init(void)
 618 {
 619 #if !defined(__APPLE__) && !defined(SUNOS)
 620         Cvar_RegisterVariable (&vid_dgamouse);
 621 #endif
 622         InitSig(); // trap evil signals
 623 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 624         if (COM_CheckParm ("-nomouse"))
 625                 mouse_avail = false;
 626 }
 627
 628 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 629 {
 630         *attrib++ = GLX_RGBA;
 631         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 632         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 633         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 634         *attrib++ = GLX_DOUBLEBUFFER;
 635         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 636         // if stencil is enabled, ask for alpha too
 637         if (stencil)
 638         {
 639                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 640                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 641         }
 642         if (stereobuffer)
 643                 *attrib++ = GLX_STEREO;
 644         if (samples > 1)
 645         {
 646                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 647                 *attrib++ = 1;
 648                 *attrib++ = GLX_SAMPLES_ARB;
 649                 *attrib++ = samples;
 650         }
 651         *attrib++ = None;
 652 }
 653
 654 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 655 {
 656         int i;
 657         int attrib[32];
 658         XSetWindowAttributes attr;
 659         XClassHint *clshints;
 660         XWMHints *wmhints;
 661         XSizeHints *szhints;
 662         unsigned long mask;
 663         Window root;
 664         XVisualInfo *visinfo;
 665         int MajorVersion, MinorVersion;
 666         const char *drivername;
 667
 668 #if defined(__APPLE__) && defined(__MACH__)
 669         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 670 #else
 671         drivername = "libGL.so.1";
 672 #endif
 673 // 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
 674 // 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
 675 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 676         i = COM_CheckParm("-gl_driver");
 677         if (i && i < com_argc - 1)
 678                 drivername = com_argv[i + 1];
 679         if (!GL_OpenLibrary(drivername))
 680         {
 681                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 682                 return false;
 683         }
 684
 685         if (!(vidx11_display = XOpenDisplay(NULL)))
 686         {
 687                 Con_Print("Couldn't open the X display\n");
 688                 return false;
 689         }
 690
 691         vidx11_screen = DefaultScreen(vidx11_display);
 692         root = RootWindow(vidx11_display, vidx11_screen);
 693
 694         // Get video mode list
 695         MajorVersion = MinorVersion = 0;
 696         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 697                 vidmode_ext = false;
 698         else
 699         {
 700                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 701                 vidmode_ext = true;
 702         }
 703
 704         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 705          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 706          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 707          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 708          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 709          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 710         {
 711                 Con_Printf("glX functions not found in %s\n", gl_driver);
 712                 return false;
 713         }
 714
 715         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 716         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 717         if (!visinfo && (samples == 1))
 718         {
 719                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
 720                  * entirely without one */
 721                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
 722                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 723         }
 724         if (!visinfo)
 725         {
 726                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 727                 return false;
 728         }
 729
 730         if (vidmode_ext)
 731         {
 732                 int best_fit, best_dist, dist, x, y;
 733
 734                 // Are we going fullscreen?  If so, let's change video mode
 735                 if (fullscreen)
 736                 {
 737                         XF86VidModeModeLine *current_vidmode;
 738                         XF86VidModeModeInfo **vidmodes;
 739                         int num_vidmodes;
 740
 741                         // This nice hack comes from the SDL source code
 742                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 743                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 744
 745                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 746                         best_dist = 9999999;
 747                         best_fit = -1;
 748
 749                         for (i = 0; i < num_vidmodes; i++)
 750                         {
 751                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 752                                         continue;
 753
 754                                 x = width - vidmodes[i]->hdisplay;
 755                                 y = height - vidmodes[i]->vdisplay;
 756                                 dist = (x * x) + (y * y);
 757                                 if (dist < best_dist)
 758                                 {
 759                                         best_dist = dist;
 760                                         best_fit = i;
 761                                 }
 762                         }
 763
 764                         if (best_fit != -1)
 765                         {
 766                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 767                                 // to width/height =, so the window will take the full area of
 768                                 // the mode chosen
 769                                 width = vidmodes[best_fit]->hdisplay;
 770                                 height = vidmodes[best_fit]->vdisplay;
 771
 772                                 // change to the mode
 773                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 774                                 vid_isfullscreen = true;
 775
 776                                 // Move the viewport to top left
 777                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 778                         }
 779                         else
 780                                 fullscreen = 0;
 781
 782                         free(vidmodes);
 783                 }
 784         }
 785
 786         // LordHavoc: save the visual for use in gamma ramp settings later
 787         vidx11_visual = visinfo->visual;
 788
 789         /* window attributes */
 790         attr.background_pixel = 0;
 791         attr.border_pixel = 0;
 792         // LordHavoc: save the colormap for later, too
 793         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 794         attr.event_mask = X_MASK;
 795         if (vid_isfullscreen)
 796         {
 797                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 798                 attr.override_redirect = True;
 799                 attr.backing_store = NotUseful;
 800                 attr.save_under = False;
 801         }
 802         else
 803                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 804
 805         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 806
 807         wmhints = XAllocWMHints();
 808         if(XpmCreatePixmapFromData(vidx11_display, win,
 809                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 810                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 811                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 812
 813         clshints = XAllocClassHint();
 814         clshints->res_name = strdup(gamename);
 815         clshints->res_class = strdup("DarkPlaces");
 816
 817         szhints = XAllocSizeHints();
 818         if(vid_resizable.integer == 0)
 819         {
 820                 szhints->min_width = szhints->max_width = width;
 821                 szhints->min_height = szhints->max_height = height;
 822                 szhints->flags |= PMinSize | PMaxSize;
 823         }
 824
 825         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 826         XFree(clshints);
 827         XFree(wmhints);
 828         XFree(szhints);
 829         //XStoreName(vidx11_display, win, gamename);
 830         XMapWindow(vidx11_display, win);
 831
 832         // LordHavoc: making the close button on a window do the right thing
 833         // seems to involve this mess, sigh...
 834         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 835         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 836
 837         if (vid_isfullscreen)
 838         {
 839                 XMoveWindow(vidx11_display, win, 0, 0);
 840                 XRaiseWindow(vidx11_display, win);
 841                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 842                 XFlush(vidx11_display);
 843                 // Move the viewport to top left
 844                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 845         }
 846
 847         //XSync(vidx11_display, False);
 848
 849         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 850         if (!ctx)
 851         {
 852                 Con_Printf ("glXCreateContext failed\n");
 853                 return false;
 854         }
 855
 856         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 857         {
 858                 Con_Printf ("glXMakeCurrent failed\n");
 859                 return false;
 860         }
 861
 862         XSync(vidx11_display, False);
 863
 864         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 865         {
 866                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 867                 return false;
 868         }
 869
 870         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 871         gl_platform = "GLX";
 872         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 873
 874         gl_videosyncavailable = false;
 875
 876 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 877 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 878 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 879         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 880 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 881 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 882 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 883         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 884
 885         vid_usingmousegrab = false;
 886         vid_usingmouse = false;
 887         vid_usinghidecursor = false;
 888         vid_usingvsync = false;
 889         vid_hidden = false;
 890         vid_activewindow = true;
 891         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 892 #if !defined(__APPLE__) && !defined(SUNOS)
 893         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 894         if (!vid_x11_dgasupported)
 895                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 896 #endif
 897         GL_Init();
 898         return true;
 899 }
 900
 901 void Sys_SendKeyEvents(void)
 902 {
 903         static qboolean sound_active = true;
 904
 905         // enable/disable sound on focus gain/loss
 906         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 907         {
 908                 if (!sound_active)
 909                 {
 910                         S_UnblockSound ();
 911                         sound_active = true;
 912                 }
 913         }
 914         else
 915         {
 916                 if (sound_active)
 917                 {
 918                         S_BlockSound ();
 919                         sound_active = false;
 920                 }
 921         }
 922
 923         HandleEvents();
 924 }
 925
 926 void IN_Move (void)
 927 {
 928 }