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         static int originalmouseparms_num;
 256         static int originalmouseparms_denom;
 257         static int originalmouseparms_threshold;
 258         static qboolean restore_spi;
 259
 260 #if !defined(__APPLE__) && !defined(SUNOS)
 261         qboolean usedgamouse;
 262 #endif
 263
 264         if (!vidx11_display || !win)
 265                 return;
 266
 267         if (relative)
 268                 fullscreengrab = true;
 269
 270         if (!mouse_avail)
 271                 fullscreengrab = relative = hidecursor = false;
 272
 273 #if !defined(__APPLE__) && !defined(SUNOS)
 274         usedgamouse = relative && vid_dgamouse.integer;
 275         if (!vid_x11_dgasupported)
 276                 usedgamouse = false;
 277         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 278                 VID_SetMouse(false, false, false); // ungrab first!
 279 #endif
 280
 281         if (vid_usingmousegrab != fullscreengrab)
 282         {
 283                 vid_usingmousegrab = fullscreengrab;
 284                 cl_ignoremousemoves = 2;
 285                 if (fullscreengrab)
 286                 {
 287                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 288                         if (vid_grabkeyboard.integer || vid_isfullscreen)
 289                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 290                 }
 291                 else
 292                 {
 293                         XUngrabPointer(vidx11_display, CurrentTime);
 294                         XUngrabKeyboard(vidx11_display, CurrentTime);
 295                 }
 296         }
 297
 298         if (relative)
 299         {
 300                 if (!vid_usingmouse)
 301                 {
 302                         XWindowAttributes attribs_1;
 303                         XSetWindowAttributes attribs_2;
 304
 305                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 306                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 307                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 308
 309 #if !defined(__APPLE__) && !defined(SUNOS)
 310                         vid_usingdgamouse = usedgamouse;
 311                         if (usedgamouse)
 312                         {
 313                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 314                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 315                         }
 316                         else
 317 #endif
 318                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 319
 320 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 321 #if !defined(__APPLE__) && !defined(SUNOS)
 322                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 323 #else
 324                         if (!COM_CheckParm ("-noforcemparms"))
 325 #endif
 326                         {
 327                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 328                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 329                                 restore_spi = true;
 330                         }
 331                         else
 332                                 restore_spi = false;
 333
 334                         cl_ignoremousemoves = 2;
 335                         vid_usingmouse = true;
 336                 }
 337         }
 338         else
 339         {
 340                 if (vid_usingmouse)
 341                 {
 342 #if !defined(__APPLE__) && !defined(SUNOS)
 343                         if (vid_usingdgamouse)
 344                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 345                         vid_usingdgamouse = false;
 346 #endif
 347                         cl_ignoremousemoves = 2;
 348
 349                         if (restore_spi)
 350                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 351                         restore_spi = false;
 352
 353                         vid_usingmouse = false;
 354                 }
 355         }
 356
 357         if (vid_usinghidecursor != hidecursor)
 358         {
 359                 vid_usinghidecursor = hidecursor;
 360                 if (hidecursor)
 361                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 362                 else
 363                         XUndefineCursor(vidx11_display, win);
 364         }
 365 }
 366
 367 static keynum_t buttonremap[18] =
 368 {
 369         K_MOUSE1,
 370         K_MOUSE3,
 371         K_MOUSE2,
 372         K_MWHEELUP,
 373         K_MWHEELDOWN,
 374         K_MOUSE4,
 375         K_MOUSE5,
 376         K_MOUSE6,
 377         K_MOUSE7,
 378         K_MOUSE8,
 379         K_MOUSE9,
 380         K_MOUSE10,
 381         K_MOUSE11,
 382         K_MOUSE12,
 383         K_MOUSE13,
 384         K_MOUSE14,
 385         K_MOUSE15,
 386         K_MOUSE16,
 387 };
 388
 389 static void HandleEvents(void)
 390 {
 391         XEvent event;
 392         int key;
 393         char ascii;
 394         qboolean dowarp = false;
 395
 396         if (!vidx11_display)
 397                 return;
 398
 399         while (XPending(vidx11_display))
 400         {
 401                 XNextEvent(vidx11_display, &event);
 402
 403                 switch (event.type)
 404                 {
 405                 case KeyPress:
 406                         // key pressed
 407                         key = XLateKey (&event.xkey, &ascii);
 408                         Key_Event(key, ascii, true);
 409                         printf("keypress\n");
 410                         break;
 411
 412                 case KeyRelease:
 413                         // key released
 414                         key = XLateKey (&event.xkey, &ascii);
 415                         Key_Event(key, ascii, false);
 416                         break;
 417
 418                 case MotionNotify:
 419                         // mouse moved
 420                         if (vid_usingmouse)
 421                         {
 422 #if !defined(__APPLE__) && !defined(SUNOS)
 423                                 if (vid_usingdgamouse)
 424                                 {
 425                                         in_mouse_x += event.xmotion.x_root;
 426                                         in_mouse_y += event.xmotion.y_root;
 427                                 }
 428                                 else
 429 #endif
 430                                 {
 431                                         if (!event.xmotion.send_event)
 432                                         {
 433                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 434                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 435                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 436                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 437                                                         dowarp = true;
 438                                         }
 439                                 }
 440                         }
 441                         in_windowmouse_x = event.xmotion.x;
 442                         in_windowmouse_y = event.xmotion.y;
 443                         break;
 444
 445                 case ButtonPress:
 446                         // mouse button pressed
 447                         if (event.xbutton.button <= 18)
 448                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 449                         else
 450                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 451                         break;
 452
 453                 case ButtonRelease:
 454                         // mouse button released
 455                         if (event.xbutton.button <= 18)
 456                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 457                         else
 458                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 459                         break;
 460
 461                 case CreateNotify:
 462                         // window created
 463                         win_x = event.xcreatewindow.x;
 464                         win_y = event.xcreatewindow.y;
 465                         break;
 466
 467                 case ConfigureNotify:
 468                         // window changed size/location
 469                         win_x = event.xconfigure.x;
 470                         win_y = event.xconfigure.y;
 471                         if(vid_resizable.integer < 2)
 472                         {
 473                                 vid.width = event.xconfigure.width;
 474                                 vid.height = event.xconfigure.height;
 475                         }
 476                         break;
 477                 case DestroyNotify:
 478                         // window has been destroyed
 479                         Sys_Quit(0);
 480                         break;
 481                 case ClientMessage:
 482                         // window manager messages
 483                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 484                                 Sys_Quit(0);
 485                         break;
 486                 case MapNotify:
 487                         if (vid.fullscreen)
 488                                 break;
 489                         // window restored
 490                         vid_hidden = false;
 491                         VID_RestoreSystemGamma();
 492                         break;
 493                 case UnmapNotify:
 494                         if (vid.fullscreen)
 495                                 break;
 496                         // window iconified/rolledup/whatever
 497                         vid_hidden = true;
 498                         VID_RestoreSystemGamma();
 499                         break;
 500                 case FocusIn:
 501                         if (vid.fullscreen)
 502                                 break;
 503                         // window is now the input focus
 504                         vid_activewindow = true;
 505                         break;
 506                 case FocusOut:
 507                         if (vid.fullscreen)
 508                                 break;
 509                         // window is no longer the input focus
 510                         vid_activewindow = false;
 511                         VID_RestoreSystemGamma();
 512                         break;
 513                 case EnterNotify:
 514                         // mouse entered window
 515                         break;
 516                 case LeaveNotify:
 517                         // mouse left window
 518                         break;
 519                 }
 520         }
 521
 522         if (dowarp)
 523         {
 524                 /* move the mouse to the window center again */
 525                 // we'll catch the warp motion by its send_event flag, updating the
 526                 // stored mouse position without adding any delta motion
 527                 XEvent event;
 528                 event.type = MotionNotify;
 529                 event.xmotion.display = vidx11_display;
 530                 event.xmotion.window = win;
 531                 event.xmotion.x = vid.width / 2;
 532                 event.xmotion.y = vid.height / 2;
 533                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 534                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 535         }
 536 }
 537
 538 static void *prjobj = NULL;
 539
 540 static void GL_CloseLibrary(void)
 541 {
 542         if (prjobj)
 543                 dlclose(prjobj);
 544         prjobj = NULL;
 545         gl_driver[0] = 0;
 546         qglXGetProcAddressARB = NULL;
 547         gl_extensions = "";
 548         gl_platform = "";
 549         gl_platformextensions = "";
 550 }
 551
 552 static int GL_OpenLibrary(const char *name)
 553 {
 554         Con_Printf("Loading OpenGL driver %s\n", name);
 555         GL_CloseLibrary();
 556         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 557         {
 558                 Con_Printf("Unable to open symbol list for %s\n", name);
 559                 return false;
 560         }
 561         strlcpy(gl_driver, name, sizeof(gl_driver));
 562         return true;
 563 }
 564
 565 void *GL_GetProcAddress(const char *name)
 566 {
 567         void *p = NULL;
 568         if (qglXGetProcAddressARB != NULL)
 569                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 570         if (p == NULL)
 571                 p = (void *) dlsym(prjobj, name);
 572         return p;
 573 }
 574
 575 void VID_Shutdown(void)
 576 {
 577         if (!ctx || !vidx11_display)
 578                 return;
 579
 580         VID_SetMouse(false, false, false);
 581         VID_RestoreSystemGamma();
 582
 583         // FIXME: glXDestroyContext here?
 584         if (vid_isfullscreen)
 585                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 586         if (win)
 587                 XDestroyWindow(vidx11_display, win);
 588         XCloseDisplay(vidx11_display);
 589
 590         vid_hidden = true;
 591         vid_isfullscreen = false;
 592         vidx11_display = NULL;
 593         win = 0;
 594         ctx = NULL;
 595
 596         GL_CloseLibrary();
 597         Key_ClearStates ();
 598 }
 599
 600 void signal_handler(int sig)
 601 {
 602         Con_Printf("Received signal %d, exiting...\n", sig);
 603         VID_RestoreSystemGamma();
 604         Sys_Quit(1);
 605 }
 606
 607 void InitSig(void)
 608 {
 609         signal(SIGHUP, signal_handler);
 610         signal(SIGINT, signal_handler);
 611         signal(SIGQUIT, signal_handler);
 612         signal(SIGILL, signal_handler);
 613         signal(SIGTRAP, signal_handler);
 614         signal(SIGIOT, signal_handler);
 615         signal(SIGBUS, signal_handler);
 616         signal(SIGFPE, signal_handler);
 617         signal(SIGSEGV, signal_handler);
 618         signal(SIGTERM, signal_handler);
 619 }
 620
 621 void VID_Finish (void)
 622 {
 623         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 624         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 625         {
 626                 vid_usingvsync = vid_usevsync;
 627                 if (qglXSwapIntervalSGI (vid_usevsync))
 628                         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");
 629         }
 630
 631         if (r_render.integer)
 632         {
 633                 CHECKGLERROR
 634                 if (r_speeds.integer || gl_finish.integer)
 635                 {
 636                         qglFinish();CHECKGLERROR
 637                 }
 638                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 639         }
 640
 641         if (vid_x11_hardwaregammasupported)
 642                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 643 }
 644
 645 int VID_SetGamma(unsigned short *ramps, int rampsize)
 646 {
 647         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 648 }
 649
 650 int VID_GetGamma(unsigned short *ramps, int rampsize)
 651 {
 652         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 653 }
 654
 655 void VID_Init(void)
 656 {
 657 #if !defined(__APPLE__) && !defined(SUNOS)
 658         Cvar_RegisterVariable (&vid_dgamouse);
 659 #endif
 660         InitSig(); // trap evil signals
 661 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 662         if (COM_CheckParm ("-nomouse"))
 663                 mouse_avail = false;
 664 }
 665
 666 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 667 {
 668         *attrib++ = GLX_RGBA;
 669         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 670         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 671         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 672         *attrib++ = GLX_DOUBLEBUFFER;
 673         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 674         // if stencil is enabled, ask for alpha too
 675         if (stencil)
 676         {
 677                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 678                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 679         }
 680         if (stereobuffer)
 681                 *attrib++ = GLX_STEREO;
 682         if (samples > 1)
 683         {
 684                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 685                 *attrib++ = 1;
 686                 *attrib++ = GLX_SAMPLES_ARB;
 687                 *attrib++ = samples;
 688         }
 689         *attrib++ = None;
 690 }
 691
 692 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 693 {
 694         int i;
 695         int attrib[32];
 696         XSetWindowAttributes attr;
 697         XClassHint *clshints;
 698         XWMHints *wmhints;
 699         XSizeHints *szhints;
 700         unsigned long mask;
 701         Window root;
 702         XVisualInfo *visinfo;
 703         int MajorVersion, MinorVersion;
 704         const char *drivername;
 705
 706 #if defined(__APPLE__) && defined(__MACH__)
 707         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 708 #else
 709         drivername = "libGL.so.1";
 710 #endif
 711 // 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
 712 // 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
 713 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 714         i = COM_CheckParm("-gl_driver");
 715         if (i && i < com_argc - 1)
 716                 drivername = com_argv[i + 1];
 717         if (!GL_OpenLibrary(drivername))
 718         {
 719                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 720                 return false;
 721         }
 722
 723         if (!(vidx11_display = XOpenDisplay(NULL)))
 724         {
 725                 Con_Print("Couldn't open the X display\n");
 726                 return false;
 727         }
 728
 729         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 730         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 731
 732         vidx11_screen = DefaultScreen(vidx11_display);
 733         root = RootWindow(vidx11_display, vidx11_screen);
 734
 735         // Get video mode list
 736         MajorVersion = MinorVersion = 0;
 737         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 738                 vidmode_ext = false;
 739         else
 740         {
 741                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 742                 vidmode_ext = true;
 743         }
 744
 745         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 746          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 747          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 748          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 749          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 750          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 751         {
 752                 Con_Printf("glX functions not found in %s\n", gl_driver);
 753                 return false;
 754         }
 755
 756         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 757         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 758         if (!visinfo)
 759         {
 760                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 761                 return false;
 762         }
 763
 764         if (vidmode_ext)
 765         {
 766                 int best_fit, best_dist, dist, x, y;
 767
 768                 // Are we going fullscreen?  If so, let's change video mode
 769                 if (fullscreen)
 770                 {
 771                         XF86VidModeModeLine *current_vidmode;
 772                         XF86VidModeModeInfo **vidmodes;
 773                         int num_vidmodes;
 774
 775                         // This nice hack comes from the SDL source code
 776                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 777                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 778
 779                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 780                         best_dist = 9999999;
 781                         best_fit = -1;
 782
 783                         for (i = 0; i < num_vidmodes; i++)
 784                         {
 785                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 786                                         continue;
 787
 788                                 x = width - vidmodes[i]->hdisplay;
 789                                 y = height - vidmodes[i]->vdisplay;
 790                                 dist = (x * x) + (y * y);
 791                                 if (dist < best_dist)
 792                                 {
 793                                         best_dist = dist;
 794                                         best_fit = i;
 795                                 }
 796                         }
 797
 798                         if (best_fit != -1)
 799                         {
 800                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 801                                 // to width/height =, so the window will take the full area of
 802                                 // the mode chosen
 803                                 width = vidmodes[best_fit]->hdisplay;
 804                                 height = vidmodes[best_fit]->vdisplay;
 805
 806                                 // change to the mode
 807                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 808                                 vid_isfullscreen = true;
 809
 810                                 // Move the viewport to top left
 811                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 812                         }
 813                         else
 814                                 fullscreen = 0;
 815
 816                         free(vidmodes);
 817                 }
 818         }
 819
 820         // LordHavoc: save the visual for use in gamma ramp settings later
 821         vidx11_visual = visinfo->visual;
 822
 823         /* window attributes */
 824         attr.background_pixel = 0;
 825         attr.border_pixel = 0;
 826         // LordHavoc: save the colormap for later, too
 827         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 828         attr.event_mask = X_MASK;
 829         if (vid_isfullscreen)
 830         {
 831                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 832                 attr.override_redirect = True;
 833                 attr.backing_store = NotUseful;
 834                 attr.save_under = False;
 835         }
 836         else
 837                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 838
 839         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 840
 841         wmhints = XAllocWMHints();
 842         if(XpmCreatePixmapFromData(vidx11_display, win,
 843                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 844                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 845                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 846
 847         clshints = XAllocClassHint();
 848         clshints->res_name = strdup(gamename);
 849         clshints->res_class = strdup("DarkPlaces");
 850
 851         szhints = XAllocSizeHints();
 852         if(vid_resizable.integer == 0)
 853         {
 854                 szhints->min_width = szhints->max_width = width;
 855                 szhints->min_height = szhints->max_height = height;
 856                 szhints->flags |= PMinSize | PMaxSize;
 857         }
 858
 859         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 860         XFree(clshints);
 861         XFree(wmhints);
 862         XFree(szhints);
 863         //XStoreName(vidx11_display, win, gamename);
 864         XMapWindow(vidx11_display, win);
 865
 866         // LordHavoc: making the close button on a window do the right thing
 867         // seems to involve this mess, sigh...
 868         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 869         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 870
 871         if (vid_isfullscreen)
 872         {
 873                 XMoveWindow(vidx11_display, win, 0, 0);
 874                 XRaiseWindow(vidx11_display, win);
 875                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 876                 XFlush(vidx11_display);
 877                 // Move the viewport to top left
 878                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 879         }
 880
 881         //XSync(vidx11_display, False);
 882
 883         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 884         if (!ctx)
 885         {
 886                 Con_Printf ("glXCreateContext failed\n");
 887                 return false;
 888         }
 889
 890         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 891         {
 892                 Con_Printf ("glXMakeCurrent failed\n");
 893                 return false;
 894         }
 895
 896         XSync(vidx11_display, False);
 897
 898         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 899         {
 900                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 901                 return false;
 902         }
 903
 904         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 905         gl_platform = "GLX";
 906         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 907
 908         gl_videosyncavailable = false;
 909
 910 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 911 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 912 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 913         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 914 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 915 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 916 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 917         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 918
 919         vid_usingmousegrab = false;
 920         vid_usingmouse = false;
 921         vid_usinghidecursor = false;
 922         vid_usingvsync = false;
 923         vid_hidden = false;
 924         vid_activewindow = true;
 925         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 926 #if !defined(__APPLE__) && !defined(SUNOS)
 927         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 928         if (!vid_x11_dgasupported)
 929                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 930 #endif
 931         GL_Init();
 932         return true;
 933 }
 934
 935 void Sys_SendKeyEvents(void)
 936 {
 937         static qboolean sound_active = true;
 938
 939         // enable/disable sound on focus gain/loss
 940         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 941         {
 942                 if (!sound_active)
 943                 {
 944                         S_UnblockSound ();
 945                         sound_active = true;
 946                 }
 947         }
 948         else
 949         {
 950                 if (sound_active)
 951                 {
 952                         S_BlockSound ();
 953                         sound_active = false;
 954                 }
 955         }
 956
 957         HandleEvents();
 958 }
 959
 960 void IN_Move (void)
 961 {
 962 }