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 #if !defined(__APPLE__) && !defined(SUNOS)
 256         qboolean usedgamouse;
 257 #endif
 258
 259         if (!vidx11_display || !win)
 260                 return;
 261
 262         if (relative)
 263                 fullscreengrab = true;
 264
 265         if (!mouse_avail)
 266                 fullscreengrab = relative = hidecursor = false;
 267
 268 #if !defined(__APPLE__) && !defined(SUNOS)
 269         usedgamouse = relative && vid_dgamouse.integer;
 270         if (!vid_x11_dgasupported)
 271                 usedgamouse = false;
 272         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 273                 VID_SetMouse(false, false, false); // ungrab first!
 274 #endif
 275
 276         if (vid_usingmousegrab != fullscreengrab)
 277         {
 278                 vid_usingmousegrab = fullscreengrab;
 279                 cl_ignoremousemoves = 2;
 280                 if (fullscreengrab)
 281                 {
 282                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 283                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 284                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 285                 }
 286                 else
 287                 {
 288                         XUngrabPointer(vidx11_display, CurrentTime);
 289                         XUngrabKeyboard(vidx11_display, CurrentTime);
 290                 }
 291         }
 292
 293         if (relative)
 294         {
 295                 if (!vid_usingmouse)
 296                 {
 297                         XWindowAttributes attribs_1;
 298                         XSetWindowAttributes attribs_2;
 299
 300                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 301                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 302                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 303
 304 #if !defined(__APPLE__) && !defined(SUNOS)
 305                         vid_usingdgamouse = usedgamouse;
 306                         if (usedgamouse)
 307                         {
 308                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 309                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 310                         }
 311                         else
 312 #endif
 313                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 314
 315                         cl_ignoremousemoves = 2;
 316                         vid_usingmouse = true;
 317                 }
 318         }
 319         else
 320         {
 321                 if (vid_usingmouse)
 322                 {
 323 #if !defined(__APPLE__) && !defined(SUNOS)
 324                         if (vid_usingdgamouse)
 325                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 326                         vid_usingdgamouse = false;
 327 #endif
 328                         cl_ignoremousemoves = 2;
 329                         vid_usingmouse = false;
 330                 }
 331         }
 332
 333         if (vid_usinghidecursor != hidecursor)
 334         {
 335                 vid_usinghidecursor = hidecursor;
 336                 if (hidecursor)
 337                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 338                 else
 339                         XUndefineCursor(vidx11_display, win);
 340         }
 341 }
 342
 343 static keynum_t buttonremap[18] =
 344 {
 345         K_MOUSE1,
 346         K_MOUSE3,
 347         K_MOUSE2,
 348         K_MWHEELUP,
 349         K_MWHEELDOWN,
 350         K_MOUSE4,
 351         K_MOUSE5,
 352         K_MOUSE6,
 353         K_MOUSE7,
 354         K_MOUSE8,
 355         K_MOUSE9,
 356         K_MOUSE10,
 357         K_MOUSE11,
 358         K_MOUSE12,
 359         K_MOUSE13,
 360         K_MOUSE14,
 361         K_MOUSE15,
 362         K_MOUSE16,
 363 };
 364
 365 static void HandleEvents(void)
 366 {
 367         XEvent event;
 368         int key;
 369         char ascii;
 370         qboolean dowarp = false;
 371
 372         if (!vidx11_display)
 373                 return;
 374
 375         while (XPending(vidx11_display))
 376         {
 377                 XNextEvent(vidx11_display, &event);
 378
 379                 switch (event.type)
 380                 {
 381                 case KeyPress:
 382                         // key pressed
 383                         key = XLateKey (&event.xkey, &ascii);
 384                         Key_Event(key, ascii, true);
 385                         break;
 386
 387                 case KeyRelease:
 388                         // key released
 389                         key = XLateKey (&event.xkey, &ascii);
 390                         Key_Event(key, ascii, false);
 391                         break;
 392
 393                 case MotionNotify:
 394                         // mouse moved
 395                         if (vid_usingmouse)
 396                         {
 397 #if !defined(__APPLE__) && !defined(SUNOS)
 398                                 if (vid_usingdgamouse)
 399                                 {
 400                                         in_mouse_x += event.xmotion.x_root;
 401                                         in_mouse_y += event.xmotion.y_root;
 402                                 }
 403                                 else
 404 #endif
 405                                 {
 406                                         if (!event.xmotion.send_event)
 407                                         {
 408                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 409                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 410                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 411                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 412                                                         dowarp = true;
 413                                         }
 414                                 }
 415                         }
 416                         in_windowmouse_x = event.xmotion.x;
 417                         in_windowmouse_y = event.xmotion.y;
 418                         break;
 419
 420                 case ButtonPress:
 421                         // mouse button pressed
 422                         if (event.xbutton.button <= 18)
 423                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 424                         else
 425                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 426                         break;
 427
 428                 case ButtonRelease:
 429                         // mouse button released
 430                         if (event.xbutton.button <= 18)
 431                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 432                         else
 433                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 434                         break;
 435
 436                 case CreateNotify:
 437                         // window created
 438                         win_x = event.xcreatewindow.x;
 439                         win_y = event.xcreatewindow.y;
 440                         break;
 441
 442                 case ConfigureNotify:
 443                         // window changed size/location
 444                         win_x = event.xconfigure.x;
 445                         win_y = event.xconfigure.y;
 446                         if(vid_resizable.integer < 2)
 447                         {
 448                                 vid.width = event.xconfigure.width;
 449                                 vid.height = event.xconfigure.height;
 450                         }
 451                         break;
 452                 case DestroyNotify:
 453                         // window has been destroyed
 454                         Sys_Quit(0);
 455                         break;
 456                 case ClientMessage:
 457                         // window manager messages
 458                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 459                                 Sys_Quit(0);
 460                         break;
 461                 case MapNotify:
 462                         if (vid.fullscreen)
 463                                 break;
 464                         // window restored
 465                         vid_hidden = false;
 466                         VID_RestoreSystemGamma();
 467                         break;
 468                 case UnmapNotify:
 469                         if (vid.fullscreen)
 470                                 break;
 471                         // window iconified/rolledup/whatever
 472                         vid_hidden = true;
 473                         VID_RestoreSystemGamma();
 474                         break;
 475                 case FocusIn:
 476                         if (vid.fullscreen)
 477                                 break;
 478                         // window is now the input focus
 479                         vid_activewindow = true;
 480                         break;
 481                 case FocusOut:
 482                         if (vid.fullscreen)
 483                                 break;
 484                         // window is no longer the input focus
 485                         vid_activewindow = false;
 486                         VID_RestoreSystemGamma();
 487                         break;
 488                 case EnterNotify:
 489                         // mouse entered window
 490                         break;
 491                 case LeaveNotify:
 492                         // mouse left window
 493                         break;
 494                 }
 495         }
 496
 497         if (dowarp)
 498         {
 499                 /* move the mouse to the window center again */
 500                 // we'll catch the warp motion by its send_event flag, updating the
 501                 // stored mouse position without adding any delta motion
 502                 XEvent event;
 503                 event.type = MotionNotify;
 504                 event.xmotion.display = vidx11_display;
 505                 event.xmotion.window = win;
 506                 event.xmotion.x = vid.width / 2;
 507                 event.xmotion.y = vid.height / 2;
 508                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 509                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 510         }
 511 }
 512
 513 static void *prjobj = NULL;
 514
 515 static void GL_CloseLibrary(void)
 516 {
 517         if (prjobj)
 518                 dlclose(prjobj);
 519         prjobj = NULL;
 520         gl_driver[0] = 0;
 521         qglXGetProcAddressARB = NULL;
 522         gl_extensions = "";
 523         gl_platform = "";
 524         gl_platformextensions = "";
 525 }
 526
 527 static int GL_OpenLibrary(const char *name)
 528 {
 529         Con_Printf("Loading OpenGL driver %s\n", name);
 530         GL_CloseLibrary();
 531         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 532         {
 533                 Con_Printf("Unable to open symbol list for %s\n", name);
 534                 return false;
 535         }
 536         strlcpy(gl_driver, name, sizeof(gl_driver));
 537         return true;
 538 }
 539
 540 void *GL_GetProcAddress(const char *name)
 541 {
 542         void *p = NULL;
 543         if (qglXGetProcAddressARB != NULL)
 544                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 545         if (p == NULL)
 546                 p = (void *) dlsym(prjobj, name);
 547         return p;
 548 }
 549
 550 void VID_Shutdown(void)
 551 {
 552         if (!ctx || !vidx11_display)
 553                 return;
 554
 555         VID_SetMouse(false, false, false);
 556         VID_RestoreSystemGamma();
 557
 558         // FIXME: glXDestroyContext here?
 559         if (vid_isfullscreen)
 560                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 561         if (win)
 562                 XDestroyWindow(vidx11_display, win);
 563         XCloseDisplay(vidx11_display);
 564
 565         vid_hidden = true;
 566         vid_isfullscreen = false;
 567         vidx11_display = NULL;
 568         win = 0;
 569         ctx = NULL;
 570
 571         GL_CloseLibrary();
 572         Key_ClearStates ();
 573 }
 574
 575 void signal_handler(int sig)
 576 {
 577         Con_Printf("Received signal %d, exiting...\n", sig);
 578         VID_RestoreSystemGamma();
 579         Sys_Quit(1);
 580 }
 581
 582 void InitSig(void)
 583 {
 584         signal(SIGHUP, signal_handler);
 585         signal(SIGINT, signal_handler);
 586         signal(SIGQUIT, signal_handler);
 587         signal(SIGILL, signal_handler);
 588         signal(SIGTRAP, signal_handler);
 589         signal(SIGIOT, signal_handler);
 590         signal(SIGBUS, signal_handler);
 591         signal(SIGFPE, signal_handler);
 592         signal(SIGSEGV, signal_handler);
 593         signal(SIGTERM, signal_handler);
 594 }
 595
 596 void VID_Finish (void)
 597 {
 598         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 599         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 600         {
 601                 vid_usingvsync = vid_usevsync;
 602                 if (qglXSwapIntervalSGI (vid_usevsync))
 603                         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");
 604         }
 605
 606         if (r_render.integer)
 607         {
 608                 CHECKGLERROR
 609                 if (r_speeds.integer || gl_finish.integer)
 610                 {
 611                         qglFinish();CHECKGLERROR
 612                 }
 613                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 614         }
 615
 616         if (vid_x11_hardwaregammasupported)
 617                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 618 }
 619
 620 int VID_SetGamma(unsigned short *ramps, int rampsize)
 621 {
 622         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 623 }
 624
 625 int VID_GetGamma(unsigned short *ramps, int rampsize)
 626 {
 627         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 628 }
 629
 630 void VID_Init(void)
 631 {
 632 #if !defined(__APPLE__) && !defined(SUNOS)
 633         Cvar_RegisterVariable (&vid_dgamouse);
 634 #endif
 635         InitSig(); // trap evil signals
 636 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 637         if (COM_CheckParm ("-nomouse"))
 638                 mouse_avail = false;
 639 }
 640
 641 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 642 {
 643         *attrib++ = GLX_RGBA;
 644         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 645         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 646         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 647         *attrib++ = GLX_DOUBLEBUFFER;
 648         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 649         // if stencil is enabled, ask for alpha too
 650         if (stencil)
 651         {
 652                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 653                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 654         }
 655         if (stereobuffer)
 656                 *attrib++ = GLX_STEREO;
 657         if (samples > 1)
 658         {
 659                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 660                 *attrib++ = 1;
 661                 *attrib++ = GLX_SAMPLES_ARB;
 662                 *attrib++ = samples;
 663         }
 664         *attrib++ = None;
 665 }
 666
 667 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 668 {
 669         int i;
 670         int attrib[32];
 671         XSetWindowAttributes attr;
 672         XClassHint *clshints;
 673         XWMHints *wmhints;
 674         XSizeHints *szhints;
 675         unsigned long mask;
 676         Window root;
 677         XVisualInfo *visinfo;
 678         int MajorVersion, MinorVersion;
 679         const char *drivername;
 680
 681 #if defined(__APPLE__) && defined(__MACH__)
 682         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 683 #else
 684         drivername = "libGL.so.1";
 685 #endif
 686 // 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
 687 // 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
 688 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 689         i = COM_CheckParm("-gl_driver");
 690         if (i && i < com_argc - 1)
 691                 drivername = com_argv[i + 1];
 692         if (!GL_OpenLibrary(drivername))
 693         {
 694                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 695                 return false;
 696         }
 697
 698         if (!(vidx11_display = XOpenDisplay(NULL)))
 699         {
 700                 Con_Print("Couldn't open the X display\n");
 701                 return false;
 702         }
 703
 704         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 705         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 706
 707         vidx11_screen = DefaultScreen(vidx11_display);
 708         root = RootWindow(vidx11_display, vidx11_screen);
 709
 710         // Get video mode list
 711         MajorVersion = MinorVersion = 0;
 712         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 713                 vidmode_ext = false;
 714         else
 715         {
 716                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 717                 vidmode_ext = true;
 718         }
 719
 720         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 721          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 722          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 723          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 724          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 725          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 726         {
 727                 Con_Printf("glX functions not found in %s\n", gl_driver);
 728                 return false;
 729         }
 730
 731         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 732         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 733         if (!visinfo && (samples == 1))
 734         {
 735                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
 736                  * entirely without one */
 737                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
 738                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 739         }
 740         if (!visinfo)
 741         {
 742                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 743                 return false;
 744         }
 745
 746         if (vidmode_ext)
 747         {
 748                 int best_fit, best_dist, dist, x, y;
 749
 750                 // Are we going fullscreen?  If so, let's change video mode
 751                 if (fullscreen)
 752                 {
 753                         XF86VidModeModeLine *current_vidmode;
 754                         XF86VidModeModeInfo **vidmodes;
 755                         int num_vidmodes;
 756
 757                         // This nice hack comes from the SDL source code
 758                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 759                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 760
 761                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 762                         best_dist = 9999999;
 763                         best_fit = -1;
 764
 765                         for (i = 0; i < num_vidmodes; i++)
 766                         {
 767                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 768                                         continue;
 769
 770                                 x = width - vidmodes[i]->hdisplay;
 771                                 y = height - vidmodes[i]->vdisplay;
 772                                 dist = (x * x) + (y * y);
 773                                 if (dist < best_dist)
 774                                 {
 775                                         best_dist = dist;
 776                                         best_fit = i;
 777                                 }
 778                         }
 779
 780                         if (best_fit != -1)
 781                         {
 782                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 783                                 // to width/height =, so the window will take the full area of
 784                                 // the mode chosen
 785                                 width = vidmodes[best_fit]->hdisplay;
 786                                 height = vidmodes[best_fit]->vdisplay;
 787
 788                                 // change to the mode
 789                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 790                                 vid_isfullscreen = true;
 791
 792                                 // Move the viewport to top left
 793                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 794                         }
 795                         else
 796                                 fullscreen = 0;
 797
 798                         free(vidmodes);
 799                 }
 800         }
 801
 802         // LordHavoc: save the visual for use in gamma ramp settings later
 803         vidx11_visual = visinfo->visual;
 804
 805         /* window attributes */
 806         attr.background_pixel = 0;
 807         attr.border_pixel = 0;
 808         // LordHavoc: save the colormap for later, too
 809         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 810         attr.event_mask = X_MASK;
 811         if (vid_isfullscreen)
 812         {
 813                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 814                 attr.override_redirect = True;
 815                 attr.backing_store = NotUseful;
 816                 attr.save_under = False;
 817         }
 818         else
 819                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 820
 821         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 822
 823         wmhints = XAllocWMHints();
 824         if(XpmCreatePixmapFromData(vidx11_display, win,
 825                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 826                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 827                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 828
 829         clshints = XAllocClassHint();
 830         clshints->res_name = strdup(gamename);
 831         clshints->res_class = strdup("DarkPlaces");
 832
 833         szhints = XAllocSizeHints();
 834         if(vid_resizable.integer == 0)
 835         {
 836                 szhints->min_width = szhints->max_width = width;
 837                 szhints->min_height = szhints->max_height = height;
 838                 szhints->flags |= PMinSize | PMaxSize;
 839         }
 840
 841         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 842         XFree(clshints);
 843         XFree(wmhints);
 844         XFree(szhints);
 845         //XStoreName(vidx11_display, win, gamename);
 846         XMapWindow(vidx11_display, win);
 847
 848         // LordHavoc: making the close button on a window do the right thing
 849         // seems to involve this mess, sigh...
 850         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 851         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 852
 853         if (vid_isfullscreen)
 854         {
 855                 XMoveWindow(vidx11_display, win, 0, 0);
 856                 XRaiseWindow(vidx11_display, win);
 857                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 858                 XFlush(vidx11_display);
 859                 // Move the viewport to top left
 860                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 861         }
 862
 863         //XSync(vidx11_display, False);
 864
 865         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 866         if (!ctx)
 867         {
 868                 Con_Printf ("glXCreateContext failed\n");
 869                 return false;
 870         }
 871
 872         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 873         {
 874                 Con_Printf ("glXMakeCurrent failed\n");
 875                 return false;
 876         }
 877
 878         XSync(vidx11_display, False);
 879
 880         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 881         {
 882                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 883                 return false;
 884         }
 885
 886         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 887         gl_platform = "GLX";
 888         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 889
 890         gl_videosyncavailable = false;
 891
 892 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 893 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 894 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 895         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 896 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 897 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 898 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 899         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 900
 901         vid_usingmousegrab = false;
 902         vid_usingmouse = false;
 903         vid_usinghidecursor = false;
 904         vid_usingvsync = false;
 905         vid_hidden = false;
 906         vid_activewindow = true;
 907         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 908 #if !defined(__APPLE__) && !defined(SUNOS)
 909         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 910         if (!vid_x11_dgasupported)
 911                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 912 #endif
 913         GL_Init();
 914         return true;
 915 }
 916
 917 void Sys_SendKeyEvents(void)
 918 {
 919         static qboolean sound_active = true;
 920
 921         // enable/disable sound on focus gain/loss
 922         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 923         {
 924                 if (!sound_active)
 925                 {
 926                         S_UnblockSound ();
 927                         sound_active = true;
 928                 }
 929         }
 930         else
 931         {
 932                 if (sound_active)
 933                 {
 934                         S_BlockSound ();
 935                         sound_active = false;
 936                 }
 937         }
 938
 939         HandleEvents();
 940 }
 941
 942 void IN_Move (void)
 943 {
 944 }