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_usingmouse = false;
  92 static qboolean vid_usingvsync = false;
  93 static qboolean vid_usevsync = false;
  94 static qboolean vid_x11_hardwaregammasupported = false;
  95 static qboolean vid_x11_dgasupported = false;
  96 static int vid_x11_gammarampsize = 0;
  97 static float    mouse_x, mouse_y;
  98 static int p_mouse_x, p_mouse_y;
  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 static void IN_Activate (qboolean grab)
 253 {
 254         if (!vidx11_display)
 255                 return;
 256         if (grab)
 257         {
 258 #if !defined(__APPLE__) && !defined(SUNOS)
 259                 if(vid_usingmouse && (vid_usingdgamouse != !!vid_dgamouse.integer))
 260                         IN_Activate(false); // ungrab first!
 261 #endif
 262                 if (!vid_usingmouse && mouse_avail && win)
 263                 {
 264                         XWindowAttributes attribs_1;
 265                         XSetWindowAttributes attribs_2;
 266
 267                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 268                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 269                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 270
 271                 // inviso cursor
 272                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 273
 274                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 275
 276 #if !defined(__APPLE__) && !defined(SUNOS)
 277                         if (vid_dgamouse.integer && vid_x11_dgasupported)
 278                         {
 279                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 280                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 281                         }
 282                         else
 283 #endif
 284                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 285
 286                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 287                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 288
 289                         mouse_x = mouse_y = 0;
 290                         cl_ignoremousemoves = 2;
 291                         vid_usingmouse = true;
 292 #if !defined(__APPLE__) && !defined(SUNOS)
 293                         vid_usingdgamouse = !!vid_dgamouse.integer;
 294 #endif
 295                 }
 296         }
 297         else
 298         {
 299                 if (vid_usingmouse)
 300                 {
 301 #if !defined(__APPLE__) && !defined(SUNOS)
 302                         if (vid_x11_dgasupported)
 303                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 304 #endif
 305
 306                         XUngrabPointer(vidx11_display, CurrentTime);
 307                         XUngrabKeyboard(vidx11_display, CurrentTime);
 308
 309                         // inviso cursor
 310                         if (win)
 311                                 XUndefineCursor(vidx11_display, win);
 312
 313                         cl_ignoremousemoves = 2;
 314                         vid_usingmouse = false;
 315                 }
 316         }
 317 }
 318
 319 static keynum_t buttonremap[18] =
 320 {
 321         K_MOUSE1,
 322         K_MOUSE3,
 323         K_MOUSE2,
 324         K_MWHEELUP,
 325         K_MWHEELDOWN,
 326         K_MOUSE4,
 327         K_MOUSE5,
 328         K_MOUSE6,
 329         K_MOUSE7,
 330         K_MOUSE8,
 331         K_MOUSE9,
 332         K_MOUSE10,
 333         K_MOUSE11,
 334         K_MOUSE12,
 335         K_MOUSE13,
 336         K_MOUSE14,
 337         K_MOUSE15,
 338         K_MOUSE16,
 339 };
 340
 341 static void HandleEvents(void)
 342 {
 343         XEvent event;
 344         int key;
 345         char ascii;
 346         qboolean dowarp = false;
 347
 348         if (!vidx11_display)
 349                 return;
 350
 351         while (XPending(vidx11_display))
 352         {
 353                 XNextEvent(vidx11_display, &event);
 354
 355                 switch (event.type)
 356                 {
 357                 case KeyPress:
 358                         // key pressed
 359                         key = XLateKey (&event.xkey, &ascii);
 360                         Key_Event(key, ascii, true);
 361                         break;
 362
 363                 case KeyRelease:
 364                         // key released
 365                         key = XLateKey (&event.xkey, &ascii);
 366                         Key_Event(key, ascii, false);
 367                         break;
 368
 369                 case MotionNotify:
 370                         // mouse moved
 371                         if (vid_usingmouse)
 372                         {
 373 #if !defined(__APPLE__) && !defined(SUNOS)
 374                                 if (vid_dgamouse.integer == 1 && vid_x11_dgasupported)
 375                                 {
 376                                         mouse_x += event.xmotion.x_root;
 377                                         mouse_y += event.xmotion.y_root;
 378                                 }
 379                                 else
 380 #endif
 381                                 {
 382
 383                                         if (!event.xmotion.send_event)
 384                                         {
 385                                                 mouse_x += event.xmotion.x - p_mouse_x;
 386                                                 mouse_y += event.xmotion.y - p_mouse_y;
 387                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 388                                                         dowarp = true;
 389                                         }
 390                                         p_mouse_x = event.xmotion.x;
 391                                         p_mouse_y = event.xmotion.y;
 392                                 }
 393                         }
 394                         //else
 395                         //      ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 396                         break;
 397
 398                 case ButtonPress:
 399                         // mouse button pressed
 400                         if (event.xbutton.button <= 18)
 401                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 402                         else
 403                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 404                         break;
 405
 406                 case ButtonRelease:
 407                         // mouse button released
 408                         if (event.xbutton.button <= 18)
 409                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 410                         else
 411                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 412                         break;
 413
 414                 case CreateNotify:
 415                         // window created
 416                         win_x = event.xcreatewindow.x;
 417                         win_y = event.xcreatewindow.y;
 418                         break;
 419
 420                 case ConfigureNotify:
 421                         // window changed size/location
 422                         win_x = event.xconfigure.x;
 423                         win_y = event.xconfigure.y;
 424                         if(vid_resizable.integer < 2)
 425                         {
 426                                 vid.width = event.xconfigure.width;
 427                                 vid.height = event.xconfigure.height;
 428                         }
 429                         break;
 430                 case DestroyNotify:
 431                         // window has been destroyed
 432                         Sys_Quit(0);
 433                         break;
 434                 case ClientMessage:
 435                         // window manager messages
 436                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 437                                 Sys_Quit(0);
 438                         break;
 439                 case MapNotify:
 440                         // window restored
 441                         vid_hidden = false;
 442                         VID_RestoreSystemGamma();
 443                         break;
 444                 case UnmapNotify:
 445                         // window iconified/rolledup/whatever
 446                         vid_hidden = true;
 447                         VID_RestoreSystemGamma();
 448                         break;
 449                 case FocusIn:
 450                         // window is now the input focus
 451                         vid_activewindow = true;
 452                         break;
 453                 case FocusOut:
 454                         // window is no longer the input focus
 455                         vid_activewindow = false;
 456                         VID_RestoreSystemGamma();
 457                         break;
 458                 case EnterNotify:
 459                         // mouse entered window
 460                         break;
 461                 case LeaveNotify:
 462                         // mouse left window
 463                         break;
 464                 }
 465         }
 466
 467         if (dowarp)
 468         {
 469                 /* move the mouse to the window center again */
 470                 p_mouse_x = vid.width / 2;
 471                 p_mouse_y = vid.height / 2;
 472                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 473         }
 474 }
 475
 476 static void *prjobj = NULL;
 477
 478 static void GL_CloseLibrary(void)
 479 {
 480         if (prjobj)
 481                 dlclose(prjobj);
 482         prjobj = NULL;
 483         gl_driver[0] = 0;
 484         qglXGetProcAddressARB = NULL;
 485         gl_extensions = "";
 486         gl_platform = "";
 487         gl_platformextensions = "";
 488 }
 489
 490 static int GL_OpenLibrary(const char *name)
 491 {
 492         Con_Printf("Loading OpenGL driver %s\n", name);
 493         GL_CloseLibrary();
 494         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 495         {
 496                 Con_Printf("Unable to open symbol list for %s\n", name);
 497                 return false;
 498         }
 499         strlcpy(gl_driver, name, sizeof(gl_driver));
 500         return true;
 501 }
 502
 503 void *GL_GetProcAddress(const char *name)
 504 {
 505         void *p = NULL;
 506         if (qglXGetProcAddressARB != NULL)
 507                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 508         if (p == NULL)
 509                 p = (void *) dlsym(prjobj, name);
 510         return p;
 511 }
 512
 513 void VID_Shutdown(void)
 514 {
 515         if (!ctx || !vidx11_display)
 516                 return;
 517
 518         if (vidx11_display)
 519         {
 520                 IN_Activate(false);
 521                 VID_RestoreSystemGamma();
 522
 523                 // FIXME: glXDestroyContext here?
 524                 if (vid_isfullscreen)
 525                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 526                 if (win)
 527                         XDestroyWindow(vidx11_display, win);
 528                 XCloseDisplay(vidx11_display);
 529         }
 530         vid_hidden = true;
 531         vid_isfullscreen = false;
 532         vidx11_display = NULL;
 533         win = 0;
 534         ctx = NULL;
 535
 536         GL_CloseLibrary();
 537         Key_ClearStates ();
 538 }
 539
 540 void signal_handler(int sig)
 541 {
 542         Con_Printf("Received signal %d, exiting...\n", sig);
 543         VID_RestoreSystemGamma();
 544         Sys_Quit(1);
 545 }
 546
 547 void InitSig(void)
 548 {
 549         signal(SIGHUP, signal_handler);
 550         signal(SIGINT, signal_handler);
 551         signal(SIGQUIT, signal_handler);
 552         signal(SIGILL, signal_handler);
 553         signal(SIGTRAP, signal_handler);
 554         signal(SIGIOT, signal_handler);
 555         signal(SIGBUS, signal_handler);
 556         signal(SIGFPE, signal_handler);
 557         signal(SIGSEGV, signal_handler);
 558         signal(SIGTERM, signal_handler);
 559 }
 560
 561 void VID_Finish (qboolean allowmousegrab)
 562 {
 563         qboolean vid_usemouse;
 564
 565         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 566         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 567         {
 568                 vid_usingvsync = vid_usevsync;
 569                 if (qglXSwapIntervalSGI (vid_usevsync))
 570                         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");
 571         }
 572
 573         // handle the mouse state when windowed if that's changed
 574         vid_usemouse = false;
 575         if (allowmousegrab && vid_mouse.integer && !key_consoleactive && (key_dest != key_game || !cls.demoplayback))
 576                 vid_usemouse = true;
 577         if (!vid_activewindow)
 578                 vid_usemouse = false;
 579         if (vid_isfullscreen)
 580                 vid_usemouse = true;
 581         IN_Activate(vid_usemouse);
 582
 583         if (r_render.integer)
 584         {
 585                 CHECKGLERROR
 586                 if (r_speeds.integer || gl_finish.integer)
 587                 {
 588                         qglFinish();CHECKGLERROR
 589                 }
 590                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 591         }
 592
 593         if (vid_x11_hardwaregammasupported)
 594                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 595 }
 596
 597 int VID_SetGamma(unsigned short *ramps, int rampsize)
 598 {
 599         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 600 }
 601
 602 int VID_GetGamma(unsigned short *ramps, int rampsize)
 603 {
 604         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 605 }
 606
 607 void VID_Init(void)
 608 {
 609 #if !defined(__APPLE__) && !defined(SUNOS)
 610         Cvar_RegisterVariable (&vid_dgamouse);
 611 #endif
 612         InitSig(); // trap evil signals
 613 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 614         if (COM_CheckParm ("-nomouse"))
 615                 mouse_avail = false;
 616 }
 617
 618 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 619 {
 620         *attrib++ = GLX_RGBA;
 621         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 622         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 623         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 624         *attrib++ = GLX_DOUBLEBUFFER;
 625         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 626         // if stencil is enabled, ask for alpha too
 627         if (stencil)
 628         {
 629                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 630                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 631         }
 632         if (stereobuffer)
 633                 *attrib++ = GLX_STEREO;
 634         if (samples > 1)
 635         {
 636                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 637                 *attrib++ = 1;
 638                 *attrib++ = GLX_SAMPLES_ARB;
 639                 *attrib++ = samples;
 640         }
 641         *attrib++ = None;
 642 }
 643
 644 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 645 {
 646         int i;
 647         int attrib[32];
 648         XSetWindowAttributes attr;
 649         XClassHint *clshints;
 650         XWMHints *wmhints;
 651         XSizeHints *szhints;
 652         unsigned long mask;
 653         Window root;
 654         XVisualInfo *visinfo;
 655         int MajorVersion, MinorVersion;
 656         const char *drivername;
 657
 658 #if defined(__APPLE__) && defined(__MACH__)
 659         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 660 #else
 661         drivername = "libGL.so.1";
 662 #endif
 663 // 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
 664 // 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
 665 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 666         i = COM_CheckParm("-gl_driver");
 667         if (i && i < com_argc - 1)
 668                 drivername = com_argv[i + 1];
 669         if (!GL_OpenLibrary(drivername))
 670         {
 671                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 672                 return false;
 673         }
 674
 675         if (!(vidx11_display = XOpenDisplay(NULL)))
 676         {
 677                 Con_Print("Couldn't open the X display\n");
 678                 return false;
 679         }
 680
 681         vidx11_screen = DefaultScreen(vidx11_display);
 682         root = RootWindow(vidx11_display, vidx11_screen);
 683
 684         // Get video mode list
 685         MajorVersion = MinorVersion = 0;
 686         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 687                 vidmode_ext = false;
 688         else
 689         {
 690                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 691                 vidmode_ext = true;
 692         }
 693
 694         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 695          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 696          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 697          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 698          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 699          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 700         {
 701                 Con_Printf("glX functions not found in %s\n", gl_driver);
 702                 return false;
 703         }
 704
 705         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 706         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 707         if (!visinfo && (samples == 1))
 708         {
 709                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
 710                  * entirely without one */
 711                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
 712                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 713         }
 714         if (!visinfo)
 715         {
 716                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 717                 return false;
 718         }
 719
 720         if (vidmode_ext)
 721         {
 722                 int best_fit, best_dist, dist, x, y;
 723
 724                 // Are we going fullscreen?  If so, let's change video mode
 725                 if (fullscreen)
 726                 {
 727                         XF86VidModeModeLine *current_vidmode;
 728                         XF86VidModeModeInfo **vidmodes;
 729                         int num_vidmodes;
 730
 731                         // This nice hack comes from the SDL source code
 732                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 733                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 734
 735                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 736                         best_dist = 9999999;
 737                         best_fit = -1;
 738
 739                         for (i = 0; i < num_vidmodes; i++)
 740                         {
 741                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 742                                         continue;
 743
 744                                 x = width - vidmodes[i]->hdisplay;
 745                                 y = height - vidmodes[i]->vdisplay;
 746                                 dist = (x * x) + (y * y);
 747                                 if (dist < best_dist)
 748                                 {
 749                                         best_dist = dist;
 750                                         best_fit = i;
 751                                 }
 752                         }
 753
 754                         if (best_fit != -1)
 755                         {
 756                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 757                                 // to width/height =, so the window will take the full area of
 758                                 // the mode chosen
 759                                 width = vidmodes[best_fit]->hdisplay;
 760                                 height = vidmodes[best_fit]->vdisplay;
 761
 762                                 // change to the mode
 763                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 764                                 vid_isfullscreen = true;
 765
 766                                 // Move the viewport to top left
 767                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 768                         }
 769                         else
 770                                 fullscreen = 0;
 771
 772                         free(vidmodes);
 773                 }
 774         }
 775
 776         // LordHavoc: save the visual for use in gamma ramp settings later
 777         vidx11_visual = visinfo->visual;
 778
 779         /* window attributes */
 780         attr.background_pixel = 0;
 781         attr.border_pixel = 0;
 782         // LordHavoc: save the colormap for later, too
 783         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 784         attr.event_mask = X_MASK;
 785         if (vid_isfullscreen)
 786         {
 787                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 788                 attr.override_redirect = True;
 789                 attr.backing_store = NotUseful;
 790                 attr.save_under = False;
 791         }
 792         else
 793                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 794
 795         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 796
 797         wmhints = XAllocWMHints();
 798         if(XpmCreatePixmapFromData(vidx11_display, win,
 799                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 800                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 801                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 802
 803         clshints = XAllocClassHint();
 804         clshints->res_name = strdup(gamename);
 805         clshints->res_class = strdup("DarkPlaces");
 806
 807         szhints = XAllocSizeHints();
 808         if(vid_resizable.integer == 0)
 809         {
 810                 szhints->min_width = szhints->max_width = width;
 811                 szhints->min_height = szhints->max_height = height;
 812                 szhints->flags |= PMinSize | PMaxSize;
 813         }
 814
 815         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 816         XFree(clshints);
 817         XFree(wmhints);
 818         XFree(szhints);
 819         //XStoreName(vidx11_display, win, gamename);
 820         XMapWindow(vidx11_display, win);
 821
 822         // LordHavoc: making the close button on a window do the right thing
 823         // seems to involve this mess, sigh...
 824         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 825         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 826
 827         if (vid_isfullscreen)
 828         {
 829                 XMoveWindow(vidx11_display, win, 0, 0);
 830                 XRaiseWindow(vidx11_display, win);
 831                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 832                 XFlush(vidx11_display);
 833                 // Move the viewport to top left
 834                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 835         }
 836
 837         //XSync(vidx11_display, False);
 838
 839         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 840         if (!ctx)
 841         {
 842                 Con_Printf ("glXCreateContext failed\n");
 843                 return false;
 844         }
 845
 846         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 847         {
 848                 Con_Printf ("glXMakeCurrent failed\n");
 849                 return false;
 850         }
 851
 852         XSync(vidx11_display, False);
 853
 854         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 855         {
 856                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 857                 return false;
 858         }
 859
 860         gl_renderer = (const char *)qglGetString(GL_RENDERER);
 861         gl_vendor = (const char *)qglGetString(GL_VENDOR);
 862         gl_version = (const char *)qglGetString(GL_VERSION);
 863         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 864         gl_platform = "GLX";
 865         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 866
 867         if (!gl_extensions)
 868                 gl_extensions = "";
 869         if (!gl_platformextensions)
 870                 gl_platformextensions = "";
 871
 872         Con_DPrintf("GL_VENDOR: %s\n", gl_vendor);
 873         Con_DPrintf("GL_RENDERER: %s\n", gl_renderer);
 874         Con_DPrintf("GL_VERSION: %s\n", gl_version);
 875         Con_DPrintf("GL_EXTENSIONS: %s\n", gl_extensions);
 876         Con_DPrintf("%s_EXTENSIONS: %s\n", gl_platform, gl_platformextensions);
 877
 878         gl_videosyncavailable = false;
 879
 880 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 881 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 882 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 883         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 884 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 885 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 886 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 887         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 888
 889         vid_usingmouse = false;
 890         vid_usingvsync = false;
 891         vid_hidden = false;
 892         vid_activewindow = true;
 893         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 894 #if !defined(__APPLE__) && !defined(SUNOS)
 895         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 896         if (!vid_x11_dgasupported)
 897                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 898 #endif
 899         GL_Init();
 900         return true;
 901 }
 902
 903 void Sys_SendKeyEvents(void)
 904 {
 905         static qboolean sound_active = true;
 906
 907         // enable/disable sound on focus gain/loss
 908         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 909         {
 910                 if (!sound_active)
 911                 {
 912                         S_UnblockSound ();
 913                         sound_active = true;
 914                 }
 915         }
 916         else
 917         {
 918                 if (sound_active)
 919                 {
 920                         S_BlockSound ();
 921                         sound_active = false;
 922                 }
 923         }
 924
 925         HandleEvents();
 926 }
 927
 928 void IN_Move (void)
 929 {
 930         if (mouse_avail)
 931         {
 932                 in_mouse_x = mouse_x;
 933                 in_mouse_y = mouse_y;
 934         }
 935         mouse_x = 0;
 936         mouse_y = 0;
 937 }