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         qboolean usedgamouse;
 256
 257         if (!vidx11_display || !win)
 258                 return;
 259
 260         if (relative)
 261                 fullscreengrab = true;
 262
 263         if (!mouse_avail)
 264                 fullscreengrab = relative = hidecursor = false;
 265
 266         usedgamouse = relative && vid_dgamouse.integer;
 267 #if !defined(__APPLE__) && !defined(SUNOS)
 268         if (!vid_x11_dgasupported)
 269                 usedgamouse = false;
 270         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 271                 VID_SetMouse(false, false, false); // ungrab first!
 272 #endif
 273
 274         if (vid_usingmousegrab != fullscreengrab)
 275         {
 276                 vid_usingmousegrab = fullscreengrab;
 277                 cl_ignoremousemoves = 2;
 278                 if (fullscreengrab)
 279                 {
 280                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 281                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 282                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 283                 }
 284                 else
 285                 {
 286                         XUngrabPointer(vidx11_display, CurrentTime);
 287                         XUngrabKeyboard(vidx11_display, CurrentTime);
 288                 }
 289         }
 290
 291         if (relative)
 292         {
 293                 if (!vid_usingmouse)
 294                 {
 295                         XWindowAttributes attribs_1;
 296                         XSetWindowAttributes attribs_2;
 297
 298                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 299                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 300                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 301
 302 #if !defined(__APPLE__) && !defined(SUNOS)
 303                         vid_usingdgamouse = usedgamouse;
 304                         if (usedgamouse)
 305                         {
 306                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 307                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 308                         }
 309                         else
 310 #endif
 311                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 312
 313                         cl_ignoremousemoves = 2;
 314                         vid_usingmouse = true;
 315                 }
 316         }
 317         else
 318         {
 319                 if (vid_usingmouse)
 320                 {
 321 #if !defined(__APPLE__) && !defined(SUNOS)
 322                         if (vid_usingdgamouse)
 323                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 324                         vid_usingdgamouse = false;
 325 #endif
 326                         cl_ignoremousemoves = 2;
 327                         vid_usingmouse = false;
 328                 }
 329         }
 330
 331         if (vid_usinghidecursor != hidecursor)
 332         {
 333                 vid_usinghidecursor = hidecursor;
 334                 if (hidecursor)
 335                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 336                 else
 337                         XUndefineCursor(vidx11_display, win);
 338         }
 339 }
 340
 341 static keynum_t buttonremap[18] =
 342 {
 343         K_MOUSE1,
 344         K_MOUSE3,
 345         K_MOUSE2,
 346         K_MWHEELUP,
 347         K_MWHEELDOWN,
 348         K_MOUSE4,
 349         K_MOUSE5,
 350         K_MOUSE6,
 351         K_MOUSE7,
 352         K_MOUSE8,
 353         K_MOUSE9,
 354         K_MOUSE10,
 355         K_MOUSE11,
 356         K_MOUSE12,
 357         K_MOUSE13,
 358         K_MOUSE14,
 359         K_MOUSE15,
 360         K_MOUSE16,
 361 };
 362
 363 static void HandleEvents(void)
 364 {
 365         XEvent event;
 366         int key;
 367         char ascii;
 368         qboolean dowarp = false;
 369
 370         if (!vidx11_display)
 371                 return;
 372
 373         while (XPending(vidx11_display))
 374         {
 375                 XNextEvent(vidx11_display, &event);
 376
 377                 switch (event.type)
 378                 {
 379                 case KeyPress:
 380                         // key pressed
 381                         key = XLateKey (&event.xkey, &ascii);
 382                         Key_Event(key, ascii, true);
 383                         break;
 384
 385                 case KeyRelease:
 386                         // key released
 387                         key = XLateKey (&event.xkey, &ascii);
 388                         Key_Event(key, ascii, false);
 389                         break;
 390
 391                 case MotionNotify:
 392                         // mouse moved
 393                         if (vid_usingmouse)
 394                         {
 395 #if !defined(__APPLE__) && !defined(SUNOS)
 396                                 if (vid_usingdgamouse)
 397                                 {
 398                                         in_mouse_x += event.xmotion.x_root;
 399                                         in_mouse_y += event.xmotion.y_root;
 400                                 }
 401                                 else
 402 #endif
 403                                 {
 404                                         if (!event.xmotion.send_event)
 405                                         {
 406                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 407                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 408                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 409                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 410                                                         dowarp = true;
 411                                         }
 412                                 }
 413                         }
 414                         in_windowmouse_x = event.xmotion.x;
 415                         in_windowmouse_y = event.xmotion.y;
 416                         break;
 417
 418                 case ButtonPress:
 419                         // mouse button pressed
 420                         if (event.xbutton.button <= 18)
 421                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 422                         else
 423                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 424                         break;
 425
 426                 case ButtonRelease:
 427                         // mouse button released
 428                         if (event.xbutton.button <= 18)
 429                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 430                         else
 431                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 432                         break;
 433
 434                 case CreateNotify:
 435                         // window created
 436                         win_x = event.xcreatewindow.x;
 437                         win_y = event.xcreatewindow.y;
 438                         break;
 439
 440                 case ConfigureNotify:
 441                         // window changed size/location
 442                         win_x = event.xconfigure.x;
 443                         win_y = event.xconfigure.y;
 444                         if(vid_resizable.integer < 2)
 445                         {
 446                                 vid.width = event.xconfigure.width;
 447                                 vid.height = event.xconfigure.height;
 448                         }
 449                         break;
 450                 case DestroyNotify:
 451                         // window has been destroyed
 452                         Sys_Quit(0);
 453                         break;
 454                 case ClientMessage:
 455                         // window manager messages
 456                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 457                                 Sys_Quit(0);
 458                         break;
 459                 case MapNotify:
 460                         if (vid.fullscreen)
 461                                 break;
 462                         // window restored
 463                         vid_hidden = false;
 464                         VID_RestoreSystemGamma();
 465                         break;
 466                 case UnmapNotify:
 467                         if (vid.fullscreen)
 468                                 break;
 469                         // window iconified/rolledup/whatever
 470                         vid_hidden = true;
 471                         VID_RestoreSystemGamma();
 472                         break;
 473                 case FocusIn:
 474                         if (vid.fullscreen)
 475                                 break;
 476                         // window is now the input focus
 477                         vid_activewindow = true;
 478                         break;
 479                 case FocusOut:
 480                         if (vid.fullscreen)
 481                                 break;
 482                         // window is no longer the input focus
 483                         vid_activewindow = false;
 484                         VID_RestoreSystemGamma();
 485                         break;
 486                 case EnterNotify:
 487                         // mouse entered window
 488                         break;
 489                 case LeaveNotify:
 490                         // mouse left window
 491                         break;
 492                 }
 493         }
 494
 495         if (dowarp)
 496         {
 497                 /* move the mouse to the window center again */
 498                 // we'll catch the warp motion by its send_event flag, updating the
 499                 // stored mouse position without adding any delta motion
 500                 XEvent event;
 501                 event.type = MotionNotify;
 502                 event.xmotion.display = vidx11_display;
 503                 event.xmotion.window = win;
 504                 event.xmotion.x = vid.width / 2;
 505                 event.xmotion.y = vid.height / 2;
 506                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 507                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 508         }
 509 }
 510
 511 static void *prjobj = NULL;
 512
 513 static void GL_CloseLibrary(void)
 514 {
 515         if (prjobj)
 516                 dlclose(prjobj);
 517         prjobj = NULL;
 518         gl_driver[0] = 0;
 519         qglXGetProcAddressARB = NULL;
 520         gl_extensions = "";
 521         gl_platform = "";
 522         gl_platformextensions = "";
 523 }
 524
 525 static int GL_OpenLibrary(const char *name)
 526 {
 527         Con_Printf("Loading OpenGL driver %s\n", name);
 528         GL_CloseLibrary();
 529         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 530         {
 531                 Con_Printf("Unable to open symbol list for %s\n", name);
 532                 return false;
 533         }
 534         strlcpy(gl_driver, name, sizeof(gl_driver));
 535         return true;
 536 }
 537
 538 void *GL_GetProcAddress(const char *name)
 539 {
 540         void *p = NULL;
 541         if (qglXGetProcAddressARB != NULL)
 542                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 543         if (p == NULL)
 544                 p = (void *) dlsym(prjobj, name);
 545         return p;
 546 }
 547
 548 void VID_Shutdown(void)
 549 {
 550         if (!ctx || !vidx11_display)
 551                 return;
 552
 553         VID_SetMouse(false, false, false);
 554         VID_RestoreSystemGamma();
 555
 556         // FIXME: glXDestroyContext here?
 557         if (vid_isfullscreen)
 558                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 559         if (win)
 560                 XDestroyWindow(vidx11_display, win);
 561         XCloseDisplay(vidx11_display);
 562
 563         vid_hidden = true;
 564         vid_isfullscreen = false;
 565         vidx11_display = NULL;
 566         win = 0;
 567         ctx = NULL;
 568
 569         GL_CloseLibrary();
 570         Key_ClearStates ();
 571 }
 572
 573 void signal_handler(int sig)
 574 {
 575         Con_Printf("Received signal %d, exiting...\n", sig);
 576         VID_RestoreSystemGamma();
 577         Sys_Quit(1);
 578 }
 579
 580 void InitSig(void)
 581 {
 582         signal(SIGHUP, signal_handler);
 583         signal(SIGINT, signal_handler);
 584         signal(SIGQUIT, signal_handler);
 585         signal(SIGILL, signal_handler);
 586         signal(SIGTRAP, signal_handler);
 587         signal(SIGIOT, signal_handler);
 588         signal(SIGBUS, signal_handler);
 589         signal(SIGFPE, signal_handler);
 590         signal(SIGSEGV, signal_handler);
 591         signal(SIGTERM, signal_handler);
 592 }
 593
 594 void VID_Finish (void)
 595 {
 596         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 597         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 598         {
 599                 vid_usingvsync = vid_usevsync;
 600                 if (qglXSwapIntervalSGI (vid_usevsync))
 601                         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");
 602         }
 603
 604         if (r_render.integer)
 605         {
 606                 CHECKGLERROR
 607                 if (r_speeds.integer || gl_finish.integer)
 608                 {
 609                         qglFinish();CHECKGLERROR
 610                 }
 611                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 612         }
 613
 614         if (vid_x11_hardwaregammasupported)
 615                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 616 }
 617
 618 int VID_SetGamma(unsigned short *ramps, int rampsize)
 619 {
 620         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 621 }
 622
 623 int VID_GetGamma(unsigned short *ramps, int rampsize)
 624 {
 625         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 626 }
 627
 628 void VID_Init(void)
 629 {
 630 #if !defined(__APPLE__) && !defined(SUNOS)
 631         Cvar_RegisterVariable (&vid_dgamouse);
 632 #endif
 633         InitSig(); // trap evil signals
 634 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 635         if (COM_CheckParm ("-nomouse"))
 636                 mouse_avail = false;
 637 }
 638
 639 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 640 {
 641         *attrib++ = GLX_RGBA;
 642         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 643         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 644         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 645         *attrib++ = GLX_DOUBLEBUFFER;
 646         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 647         // if stencil is enabled, ask for alpha too
 648         if (stencil)
 649         {
 650                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 651                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 652         }
 653         if (stereobuffer)
 654                 *attrib++ = GLX_STEREO;
 655         if (samples > 1)
 656         {
 657                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 658                 *attrib++ = 1;
 659                 *attrib++ = GLX_SAMPLES_ARB;
 660                 *attrib++ = samples;
 661         }
 662         *attrib++ = None;
 663 }
 664
 665 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 666 {
 667         int i;
 668         int attrib[32];
 669         XSetWindowAttributes attr;
 670         XClassHint *clshints;
 671         XWMHints *wmhints;
 672         XSizeHints *szhints;
 673         unsigned long mask;
 674         Window root;
 675         XVisualInfo *visinfo;
 676         int MajorVersion, MinorVersion;
 677         const char *drivername;
 678
 679 #if defined(__APPLE__) && defined(__MACH__)
 680         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 681 #else
 682         drivername = "libGL.so.1";
 683 #endif
 684 // 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
 685 // 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
 686 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 687         i = COM_CheckParm("-gl_driver");
 688         if (i && i < com_argc - 1)
 689                 drivername = com_argv[i + 1];
 690         if (!GL_OpenLibrary(drivername))
 691         {
 692                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 693                 return false;
 694         }
 695
 696         if (!(vidx11_display = XOpenDisplay(NULL)))
 697         {
 698                 Con_Print("Couldn't open the X display\n");
 699                 return false;
 700         }
 701
 702         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 703         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 704
 705         vidx11_screen = DefaultScreen(vidx11_display);
 706         root = RootWindow(vidx11_display, vidx11_screen);
 707
 708         // Get video mode list
 709         MajorVersion = MinorVersion = 0;
 710         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 711                 vidmode_ext = false;
 712         else
 713         {
 714                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 715                 vidmode_ext = true;
 716         }
 717
 718         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 719          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 720          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 721          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 722          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 723          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 724         {
 725                 Con_Printf("glX functions not found in %s\n", gl_driver);
 726                 return false;
 727         }
 728
 729         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 730         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 731         if (!visinfo && (samples == 1))
 732         {
 733                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
 734                  * entirely without one */
 735                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
 736                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 737         }
 738         if (!visinfo)
 739         {
 740                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 741                 return false;
 742         }
 743
 744         if (vidmode_ext)
 745         {
 746                 int best_fit, best_dist, dist, x, y;
 747
 748                 // Are we going fullscreen?  If so, let's change video mode
 749                 if (fullscreen)
 750                 {
 751                         XF86VidModeModeLine *current_vidmode;
 752                         XF86VidModeModeInfo **vidmodes;
 753                         int num_vidmodes;
 754
 755                         // This nice hack comes from the SDL source code
 756                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 757                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 758
 759                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 760                         best_dist = 9999999;
 761                         best_fit = -1;
 762
 763                         for (i = 0; i < num_vidmodes; i++)
 764                         {
 765                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 766                                         continue;
 767
 768                                 x = width - vidmodes[i]->hdisplay;
 769                                 y = height - vidmodes[i]->vdisplay;
 770                                 dist = (x * x) + (y * y);
 771                                 if (dist < best_dist)
 772                                 {
 773                                         best_dist = dist;
 774                                         best_fit = i;
 775                                 }
 776                         }
 777
 778                         if (best_fit != -1)
 779                         {
 780                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 781                                 // to width/height =, so the window will take the full area of
 782                                 // the mode chosen
 783                                 width = vidmodes[best_fit]->hdisplay;
 784                                 height = vidmodes[best_fit]->vdisplay;
 785
 786                                 // change to the mode
 787                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 788                                 vid_isfullscreen = true;
 789
 790                                 // Move the viewport to top left
 791                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 792                         }
 793                         else
 794                                 fullscreen = 0;
 795
 796                         free(vidmodes);
 797                 }
 798         }
 799
 800         // LordHavoc: save the visual for use in gamma ramp settings later
 801         vidx11_visual = visinfo->visual;
 802
 803         /* window attributes */
 804         attr.background_pixel = 0;
 805         attr.border_pixel = 0;
 806         // LordHavoc: save the colormap for later, too
 807         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 808         attr.event_mask = X_MASK;
 809         if (vid_isfullscreen)
 810         {
 811                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 812                 attr.override_redirect = True;
 813                 attr.backing_store = NotUseful;
 814                 attr.save_under = False;
 815         }
 816         else
 817                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 818
 819         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 820
 821         wmhints = XAllocWMHints();
 822         if(XpmCreatePixmapFromData(vidx11_display, win,
 823                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 824                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 825                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 826
 827         clshints = XAllocClassHint();
 828         clshints->res_name = strdup(gamename);
 829         clshints->res_class = strdup("DarkPlaces");
 830
 831         szhints = XAllocSizeHints();
 832         if(vid_resizable.integer == 0)
 833         {
 834                 szhints->min_width = szhints->max_width = width;
 835                 szhints->min_height = szhints->max_height = height;
 836                 szhints->flags |= PMinSize | PMaxSize;
 837         }
 838
 839         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 840         XFree(clshints);
 841         XFree(wmhints);
 842         XFree(szhints);
 843         //XStoreName(vidx11_display, win, gamename);
 844         XMapWindow(vidx11_display, win);
 845
 846         // LordHavoc: making the close button on a window do the right thing
 847         // seems to involve this mess, sigh...
 848         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 849         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 850
 851         if (vid_isfullscreen)
 852         {
 853                 XMoveWindow(vidx11_display, win, 0, 0);
 854                 XRaiseWindow(vidx11_display, win);
 855                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 856                 XFlush(vidx11_display);
 857                 // Move the viewport to top left
 858                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 859         }
 860
 861         //XSync(vidx11_display, False);
 862
 863         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 864         if (!ctx)
 865         {
 866                 Con_Printf ("glXCreateContext failed\n");
 867                 return false;
 868         }
 869
 870         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 871         {
 872                 Con_Printf ("glXMakeCurrent failed\n");
 873                 return false;
 874         }
 875
 876         XSync(vidx11_display, False);
 877
 878         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 879         {
 880                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 881                 return false;
 882         }
 883
 884         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 885         gl_platform = "GLX";
 886         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 887
 888         gl_videosyncavailable = false;
 889
 890 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 891 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 892 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 893         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 894 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 895 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 896 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 897         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 898
 899         vid_usingmousegrab = false;
 900         vid_usingmouse = false;
 901         vid_usinghidecursor = false;
 902         vid_usingvsync = false;
 903         vid_hidden = false;
 904         vid_activewindow = true;
 905         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 906 #if !defined(__APPLE__) && !defined(SUNOS)
 907         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 908         if (!vid_x11_dgasupported)
 909                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 910 #endif
 911         GL_Init();
 912         return true;
 913 }
 914
 915 void Sys_SendKeyEvents(void)
 916 {
 917         static qboolean sound_active = true;
 918
 919         // enable/disable sound on focus gain/loss
 920         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 921         {
 922                 if (!sound_active)
 923                 {
 924                         S_UnblockSound ();
 925                         sound_active = true;
 926                 }
 927         }
 928         else
 929         {
 930                 if (sound_active)
 931                 {
 932                         S_BlockSound ();
 933                         sound_active = false;
 934                 }
 935         }
 936
 937         HandleEvents();
 938 }
 939
 940 void IN_Move (void)
 941 {
 942 }