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/Xatom.h>
  27 #include <X11/XKBlib.h> // TODO possibly ifdef this out on non-supporting systems... Solaris (as always)?
  28 #include <GL/glx.h>
  29
  30 #include "quakedef.h"
  31
  32 #include <X11/keysym.h>
  33 #include <X11/cursorfont.h>
  34 #include <X11/xpm.h>
  35
  36 #include <X11/extensions/XShm.h>
  37 #if !defined(__APPLE__) && !defined(__MACH__) && !defined(SUNOS)
  38 #include <X11/extensions/xf86dga.h>
  39 #endif
  40 #include <X11/extensions/xf86vmode.h>
  41
  42 #include "nexuiz.xpm"
  43 #include "darkplaces.xpm"
  44
  45 // Tell startup code that we have a client
  46 int cl_available = true;
  47
  48 // note: if we used the XRandR extension we could support refresh rates
  49 qboolean vid_supportrefreshrate = false;
  50
  51 //GLX prototypes
  52 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  53 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  54 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  55 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  56 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  57 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  58
  59 //GLX_ARB_get_proc_address
  60 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  61
  62 static dllfunction_t getprocaddressfuncs[] =
  63 {
  64         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  65         {NULL, NULL}
  66 };
  67
  68 //GLX_SGI_swap_control
  69 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  70
  71 static dllfunction_t swapcontrolfuncs[] =
  72 {
  73         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  74         {NULL, NULL}
  75 };
  76
  77 static Display *vidx11_display = NULL;
  78 static int vidx11_screen;
  79 static Window win;
  80 static GLXContext ctx = NULL;
  81
  82 Atom wm_delete_window_atom;
  83
  84 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  85 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  86                     PointerMotionMask | ButtonMotionMask)
  87 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  88                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  89                 LeaveWindowMask)
  90
  91
  92 static qboolean mouse_avail = true;
  93 static qboolean vid_usingmousegrab = false;
  94 static qboolean vid_usingmouse = false;
  95 static qboolean vid_usinghidecursor = false;
  96 static qboolean vid_usingvsync = false;
  97 static qboolean vid_usevsync = false;
  98 static qboolean vid_x11_hardwaregammasupported = false;
  99 static qboolean vid_x11_dgasupported = false;
 100 static int vid_x11_gammarampsize = 0;
 101
 102 #if !defined(__APPLE__) && !defined(SUNOS)
 103 cvar_t vid_dgamouse = {CVAR_SAVE, "vid_dgamouse", "0", "make use of DGA mouse input"};
 104 static qboolean vid_usingdgamouse = false;
 105 #endif
 106 cvar_t vid_netwmfullscreen = {CVAR_SAVE, "vid_netwmfullscreen", "0", "make use _NET_WM_STATE_FULLSCREEN; turn this off if fullscreen does not work for you"};
 107
 108 qboolean vidmode_ext = false;
 109
 110 static int win_x, win_y;
 111
 112 static XF86VidModeModeInfo init_vidmode;
 113 static qboolean vid_isfullscreen = false;
 114
 115 static Visual *vidx11_visual;
 116 static Colormap vidx11_colormap;
 117
 118 /*-----------------------------------------------------------------------*/
 119
 120 static int XLateKey(XKeyEvent *ev, char *ascii)
 121 {
 122         int key = 0;
 123         char buf[64];
 124         KeySym keysym, shifted;
 125
 126         keysym = XLookupKeysym (ev, 0);
 127         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 128         *ascii = buf[0];
 129
 130         switch(keysym)
 131         {
 132                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 133                 case XK_Page_Up:         key = K_PGUP; break;
 134
 135                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 136                 case XK_Page_Down:       key = K_PGDN; break;
 137
 138                 case XK_KP_Home: key = K_KP_HOME; break;
 139                 case XK_Home:    key = K_HOME; break;
 140
 141                 case XK_KP_End:  key = K_KP_END; break;
 142                 case XK_End:     key = K_END; break;
 143
 144                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 145                 case XK_Left:    key = K_LEFTARROW; break;
 146
 147                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 148                 case XK_Right:  key = K_RIGHTARROW;             break;
 149
 150                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 151                 case XK_Down:    key = K_DOWNARROW; break;
 152
 153                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 154                 case XK_Up:              key = K_UPARROW;        break;
 155
 156                 case XK_Escape: key = K_ESCAPE;         break;
 157
 158                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 159                 case XK_Return: key = K_ENTER;           break;
 160
 161                 case XK_Tab:            key = K_TAB;                     break;
 162
 163                 case XK_F1:              key = K_F1;                            break;
 164
 165                 case XK_F2:              key = K_F2;                            break;
 166
 167                 case XK_F3:              key = K_F3;                            break;
 168
 169                 case XK_F4:              key = K_F4;                            break;
 170
 171                 case XK_F5:              key = K_F5;                            break;
 172
 173                 case XK_F6:              key = K_F6;                            break;
 174
 175                 case XK_F7:              key = K_F7;                            break;
 176
 177                 case XK_F8:              key = K_F8;                            break;
 178
 179                 case XK_F9:              key = K_F9;                            break;
 180
 181                 case XK_F10:            key = K_F10;                     break;
 182
 183                 case XK_F11:            key = K_F11;                     break;
 184
 185                 case XK_F12:            key = K_F12;                     break;
 186
 187                 case XK_BackSpace: key = K_BACKSPACE; break;
 188
 189                 case XK_KP_Delete: key = K_KP_DEL; break;
 190                 case XK_Delete: key = K_DEL; break;
 191
 192                 case XK_Pause:  key = K_PAUSE;           break;
 193
 194                 case XK_Shift_L:
 195                 case XK_Shift_R:        key = K_SHIFT;          break;
 196
 197                 case XK_Execute:
 198                 case XK_Control_L:
 199                 case XK_Control_R:      key = K_CTRL;            break;
 200
 201                 case XK_Alt_L:
 202                 case XK_Meta_L:
 203                 case XK_ISO_Level3_Shift:
 204                 case XK_Alt_R:
 205                 case XK_Meta_R: key = K_ALT;                    break;
 206
 207                 case XK_KP_Begin: key = K_KP_5; break;
 208
 209                 case XK_Insert:key = K_INS; break;
 210                 case XK_KP_Insert: key = K_KP_INS; break;
 211
 212                 case XK_KP_Multiply: key = K_KP_MULTIPLY; break;
 213                 case XK_KP_Add:  key = K_KP_PLUS; break;
 214                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 215                 case XK_KP_Divide: key = K_KP_SLASH; break;
 216
 217                 case XK_section:        key = '~'; break;
 218
 219                 default:
 220                         if (keysym < 32)
 221                                 break;
 222
 223                         if (keysym >= 'A' && keysym <= 'Z')
 224                                 key = keysym - 'A' + 'a';
 225                         else
 226                                 key = keysym;
 227
 228                         break;
 229         }
 230
 231         return key;
 232 }
 233
 234 static Cursor CreateNullCursor(Display *display, Window root)
 235 {
 236         Pixmap cursormask;
 237         XGCValues xgc;
 238         GC gc;
 239         XColor dummycolour;
 240         Cursor cursor;
 241
 242         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 243         xgc.function = GXclear;
 244         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 245         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 246         dummycolour.pixel = 0;
 247         dummycolour.red = 0;
 248         dummycolour.flags = 04;
 249         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 250         XFreePixmap(display,cursormask);
 251         XFreeGC(display,gc);
 252         return cursor;
 253 }
 254
 255 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 256 {
 257         static int originalmouseparms_num;
 258         static int originalmouseparms_denom;
 259         static int originalmouseparms_threshold;
 260         static qboolean restore_spi;
 261
 262 #if !defined(__APPLE__) && !defined(SUNOS)
 263         qboolean usedgamouse;
 264 #endif
 265
 266         if (!vidx11_display || !win)
 267                 return;
 268
 269         if (relative)
 270                 fullscreengrab = true;
 271
 272         if (!mouse_avail)
 273                 fullscreengrab = relative = hidecursor = false;
 274
 275 #if !defined(__APPLE__) && !defined(SUNOS)
 276         usedgamouse = relative && vid_dgamouse.integer;
 277         if (!vid_x11_dgasupported)
 278                 usedgamouse = false;
 279         if (fullscreengrab && vid_usingmouse && (vid_usingdgamouse != usedgamouse))
 280                 VID_SetMouse(false, false, false); // ungrab first!
 281 #endif
 282
 283         if (vid_usingmousegrab != fullscreengrab)
 284         {
 285                 vid_usingmousegrab = fullscreengrab;
 286                 cl_ignoremousemoves = 2;
 287                 if (fullscreengrab)
 288                 {
 289                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 290                         if (vid_grabkeyboard.integer || (vid_isfullscreen && !vid_netwmfullscreen.integer))
 291                                 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 292                 }
 293                 else
 294                 {
 295                         XUngrabPointer(vidx11_display, CurrentTime);
 296                         XUngrabKeyboard(vidx11_display, CurrentTime);
 297                 }
 298         }
 299
 300         if (relative)
 301         {
 302                 if (!vid_usingmouse)
 303                 {
 304                         XWindowAttributes attribs_1;
 305                         XSetWindowAttributes attribs_2;
 306
 307                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 308                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 309                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 310
 311 #if !defined(__APPLE__) && !defined(SUNOS)
 312                         vid_usingdgamouse = usedgamouse;
 313                         if (usedgamouse)
 314                         {
 315                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 316                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 317                         }
 318                         else
 319 #endif
 320                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 321
 322 // COMMANDLINEOPTION: X11 Input: -noforcemparms disables setting of mouse parameters (not used with DGA, windows only)
 323 #if !defined(__APPLE__) && !defined(SUNOS)
 324                         if (!COM_CheckParm ("-noforcemparms") && !usedgamouse)
 325 #else
 326                         if (!COM_CheckParm ("-noforcemparms"))
 327 #endif
 328                         {
 329                                 XGetPointerControl(vidx11_display, &originalmouseparms_num, &originalmouseparms_denom, &originalmouseparms_threshold);
 330                                 XChangePointerControl (vidx11_display, true, false, 1, 1, -1); // TODO maybe change threshold here, or remove this comment
 331                                 restore_spi = true;
 332                         }
 333                         else
 334                                 restore_spi = false;
 335
 336                         cl_ignoremousemoves = 2;
 337                         vid_usingmouse = true;
 338                 }
 339         }
 340         else
 341         {
 342                 if (vid_usingmouse)
 343                 {
 344 #if !defined(__APPLE__) && !defined(SUNOS)
 345                         if (vid_usingdgamouse)
 346                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 347                         vid_usingdgamouse = false;
 348 #endif
 349                         cl_ignoremousemoves = 2;
 350
 351                         if (restore_spi)
 352                                 XChangePointerControl (vidx11_display, true, true, originalmouseparms_num, originalmouseparms_denom, originalmouseparms_threshold);
 353                         restore_spi = false;
 354
 355                         vid_usingmouse = false;
 356                 }
 357         }
 358
 359         if (vid_usinghidecursor != hidecursor)
 360         {
 361                 vid_usinghidecursor = hidecursor;
 362                 if (hidecursor)
 363                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 364                 else
 365                         XUndefineCursor(vidx11_display, win);
 366         }
 367 }
 368
 369 static keynum_t buttonremap[18] =
 370 {
 371         K_MOUSE1,
 372         K_MOUSE3,
 373         K_MOUSE2,
 374         K_MWHEELUP,
 375         K_MWHEELDOWN,
 376         K_MOUSE4,
 377         K_MOUSE5,
 378         K_MOUSE6,
 379         K_MOUSE7,
 380         K_MOUSE8,
 381         K_MOUSE9,
 382         K_MOUSE10,
 383         K_MOUSE11,
 384         K_MOUSE12,
 385         K_MOUSE13,
 386         K_MOUSE14,
 387         K_MOUSE15,
 388         K_MOUSE16,
 389 };
 390
 391 static void HandleEvents(void)
 392 {
 393         XEvent event;
 394         int key;
 395         char ascii;
 396         qboolean dowarp = false;
 397
 398         if (!vidx11_display)
 399                 return;
 400
 401         while (XPending(vidx11_display))
 402         {
 403                 XNextEvent(vidx11_display, &event);
 404
 405                 switch (event.type)
 406                 {
 407                 case KeyPress:
 408                         // key pressed
 409                         key = XLateKey (&event.xkey, &ascii);
 410                         Key_Event(key, ascii, true);
 411                         break;
 412
 413                 case KeyRelease:
 414                         // key released
 415                         key = XLateKey (&event.xkey, &ascii);
 416                         Key_Event(key, ascii, false);
 417                         break;
 418
 419                 case MotionNotify:
 420                         // mouse moved
 421                         if (vid_usingmouse)
 422                         {
 423 #if !defined(__APPLE__) && !defined(SUNOS)
 424                                 if (vid_usingdgamouse)
 425                                 {
 426                                         in_mouse_x += event.xmotion.x_root;
 427                                         in_mouse_y += event.xmotion.y_root;
 428                                 }
 429                                 else
 430 #endif
 431                                 {
 432                                         if (!event.xmotion.send_event)
 433                                         {
 434                                                 in_mouse_x += event.xmotion.x - in_windowmouse_x;
 435                                                 in_mouse_y += event.xmotion.y - in_windowmouse_y;
 436                                                 //if (abs(vid.width/2 - event.xmotion.x) + abs(vid.height/2 - event.xmotion.y))
 437                                                 if (vid_stick_mouse.integer || abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 438                                                         dowarp = true;
 439                                         }
 440                                 }
 441                         }
 442                         in_windowmouse_x = event.xmotion.x;
 443                         in_windowmouse_y = event.xmotion.y;
 444                         break;
 445
 446                 case ButtonPress:
 447                         // mouse button pressed
 448                         if (event.xbutton.button <= 18)
 449                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 450                         else
 451                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 452                         break;
 453
 454                 case ButtonRelease:
 455                         // mouse button released
 456                         if (event.xbutton.button <= 18)
 457                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 458                         else
 459                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 460                         break;
 461
 462                 case CreateNotify:
 463                         // window created
 464                         win_x = event.xcreatewindow.x;
 465                         win_y = event.xcreatewindow.y;
 466                         break;
 467
 468                 case ConfigureNotify:
 469                         // window changed size/location
 470                         win_x = event.xconfigure.x;
 471                         win_y = event.xconfigure.y;
 472                         if(vid_resizable.integer < 2)
 473                         {
 474                                 vid.width = event.xconfigure.width;
 475                                 vid.height = event.xconfigure.height;
 476                         }
 477                         break;
 478                 case DestroyNotify:
 479                         // window has been destroyed
 480                         Sys_Quit(0);
 481                         break;
 482                 case ClientMessage:
 483                         // window manager messages
 484                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 485                                 Sys_Quit(0);
 486                         break;
 487                 case MapNotify:
 488                         if (vid.fullscreen)
 489                                 break;
 490                         // window restored
 491                         vid_hidden = false;
 492                         VID_RestoreSystemGamma();
 493                         break;
 494                 case UnmapNotify:
 495                         if (vid.fullscreen)
 496                                 break;
 497                         // window iconified/rolledup/whatever
 498                         vid_hidden = true;
 499                         VID_RestoreSystemGamma();
 500                         break;
 501                 case FocusIn:
 502                         if (vid.fullscreen && !vid_netwmfullscreen.integer)
 503                                 break;
 504                         // window is now the input focus
 505                         vid_activewindow = true;
 506                         break;
 507                 case FocusOut:
 508                         if (vid.fullscreen && !vid_netwmfullscreen.integer)
 509                                 break;
 510                         // window is no longer the input focus
 511                         vid_activewindow = false;
 512                         VID_RestoreSystemGamma();
 513                         break;
 514                 case EnterNotify:
 515                         // mouse entered window
 516                         break;
 517                 case LeaveNotify:
 518                         // mouse left window
 519                         break;
 520                 }
 521         }
 522
 523         if (dowarp)
 524         {
 525                 /* move the mouse to the window center again */
 526                 // we'll catch the warp motion by its send_event flag, updating the
 527                 // stored mouse position without adding any delta motion
 528                 XEvent event;
 529                 event.type = MotionNotify;
 530                 event.xmotion.display = vidx11_display;
 531                 event.xmotion.window = win;
 532                 event.xmotion.x = vid.width / 2;
 533                 event.xmotion.y = vid.height / 2;
 534                 XSendEvent(vidx11_display, win, False, PointerMotionMask, &event);
 535                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
 536         }
 537 }
 538
 539 static void *prjobj = NULL;
 540
 541 static void GL_CloseLibrary(void)
 542 {
 543         if (prjobj)
 544                 dlclose(prjobj);
 545         prjobj = NULL;
 546         gl_driver[0] = 0;
 547         qglXGetProcAddressARB = NULL;
 548         gl_extensions = "";
 549         gl_platform = "";
 550         gl_platformextensions = "";
 551 }
 552
 553 static int GL_OpenLibrary(const char *name)
 554 {
 555         Con_Printf("Loading OpenGL driver %s\n", name);
 556         GL_CloseLibrary();
 557         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 558         {
 559                 Con_Printf("Unable to open symbol list for %s\n", name);
 560                 return false;
 561         }
 562         strlcpy(gl_driver, name, sizeof(gl_driver));
 563         return true;
 564 }
 565
 566 void *GL_GetProcAddress(const char *name)
 567 {
 568         void *p = NULL;
 569         if (qglXGetProcAddressARB != NULL)
 570                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 571         if (p == NULL)
 572                 p = (void *) dlsym(prjobj, name);
 573         return p;
 574 }
 575
 576 void VID_Shutdown(void)
 577 {
 578         if (!ctx || !vidx11_display)
 579                 return;
 580
 581         VID_SetMouse(false, false, false);
 582         VID_RestoreSystemGamma();
 583
 584         // FIXME: glXDestroyContext here?
 585         if (vid_isfullscreen)
 586                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 587         if (win)
 588                 XDestroyWindow(vidx11_display, win);
 589         XCloseDisplay(vidx11_display);
 590
 591         vid_hidden = true;
 592         vid_isfullscreen = false;
 593         vidx11_display = NULL;
 594         win = 0;
 595         ctx = NULL;
 596
 597         GL_CloseLibrary();
 598         Key_ClearStates ();
 599 }
 600
 601 void signal_handler(int sig)
 602 {
 603         Con_Printf("Received signal %d, exiting...\n", sig);
 604         VID_RestoreSystemGamma();
 605         Sys_Quit(1);
 606 }
 607
 608 void InitSig(void)
 609 {
 610         signal(SIGHUP, signal_handler);
 611         signal(SIGINT, signal_handler);
 612         signal(SIGQUIT, signal_handler);
 613         signal(SIGILL, signal_handler);
 614         signal(SIGTRAP, signal_handler);
 615         signal(SIGIOT, signal_handler);
 616         signal(SIGBUS, signal_handler);
 617         signal(SIGFPE, signal_handler);
 618         signal(SIGSEGV, signal_handler);
 619         signal(SIGTERM, signal_handler);
 620 }
 621
 622 void VID_Finish (void)
 623 {
 624         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 625         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 626         {
 627                 vid_usingvsync = vid_usevsync;
 628                 if (qglXSwapIntervalSGI (vid_usevsync))
 629                         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");
 630         }
 631
 632         if (r_render.integer)
 633         {
 634                 CHECKGLERROR
 635                 if (r_speeds.integer || gl_finish.integer)
 636                 {
 637                         qglFinish();CHECKGLERROR
 638                 }
 639                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 640         }
 641
 642         if (vid_x11_hardwaregammasupported)
 643                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 644 }
 645
 646 int VID_SetGamma(unsigned short *ramps, int rampsize)
 647 {
 648         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 649 }
 650
 651 int VID_GetGamma(unsigned short *ramps, int rampsize)
 652 {
 653         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 654 }
 655
 656 void VID_Init(void)
 657 {
 658 #if !defined(__APPLE__) && !defined(SUNOS)
 659         Cvar_RegisterVariable (&vid_dgamouse);
 660 #endif
 661         Cvar_RegisterVariable (&vid_netwmfullscreen);
 662         InitSig(); // trap evil signals
 663 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 664         if (COM_CheckParm ("-nomouse"))
 665                 mouse_avail = false;
 666 }
 667
 668 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 669 {
 670         *attrib++ = GLX_RGBA;
 671         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 672         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 673         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 674         *attrib++ = GLX_DOUBLEBUFFER;
 675         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 676         // if stencil is enabled, ask for alpha too
 677         if (stencil)
 678         {
 679                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 680                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 681         }
 682         if (stereobuffer)
 683                 *attrib++ = GLX_STEREO;
 684         if (samples > 1)
 685         {
 686                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 687                 *attrib++ = 1;
 688                 *attrib++ = GLX_SAMPLES_ARB;
 689                 *attrib++ = samples;
 690         }
 691         *attrib++ = None;
 692 }
 693
 694 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 695 {
 696         int i;
 697         int attrib[32];
 698         XSetWindowAttributes attr;
 699         XClassHint *clshints;
 700         XWMHints *wmhints;
 701         XSizeHints *szhints;
 702         unsigned long mask;
 703         Window root;
 704         XVisualInfo *visinfo;
 705         int MajorVersion, MinorVersion;
 706         const char *drivername;
 707
 708 #if defined(__APPLE__) && defined(__MACH__)
 709         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 710 #else
 711         drivername = "libGL.so.1";
 712 #endif
 713 // 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
 714 // 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
 715 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 716         i = COM_CheckParm("-gl_driver");
 717         if (i && i < com_argc - 1)
 718                 drivername = com_argv[i + 1];
 719         if (!GL_OpenLibrary(drivername))
 720         {
 721                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 722                 return false;
 723         }
 724
 725         if (!(vidx11_display = XOpenDisplay(NULL)))
 726         {
 727                 Con_Print("Couldn't open the X display\n");
 728                 return false;
 729         }
 730
 731         // make autorepeat send keypress/keypress/.../keyrelease instead of intervening keyrelease
 732         XkbSetDetectableAutoRepeat(vidx11_display, true, NULL);
 733
 734         vidx11_screen = DefaultScreen(vidx11_display);
 735         root = RootWindow(vidx11_display, vidx11_screen);
 736
 737         // Get video mode list
 738         MajorVersion = MinorVersion = 0;
 739         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 740                 vidmode_ext = false;
 741         else
 742         {
 743                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 744                 vidmode_ext = true;
 745         }
 746
 747         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 748          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 749          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 750          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 751          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 752          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 753         {
 754                 Con_Printf("glX functions not found in %s\n", gl_driver);
 755                 return false;
 756         }
 757
 758         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 759         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 760         if (!visinfo)
 761         {
 762                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 763                 return false;
 764         }
 765
 766         if (vidmode_ext)
 767         {
 768                 int best_fit, best_dist, dist, x, y;
 769
 770                 // Are we going fullscreen?  If so, let's change video mode
 771                 if (fullscreen)
 772                 {
 773                         XF86VidModeModeLine *current_vidmode;
 774                         XF86VidModeModeInfo **vidmodes;
 775                         int num_vidmodes;
 776
 777                         // This nice hack comes from the SDL source code
 778                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 779                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 780
 781                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 782                         best_dist = 9999999;
 783                         best_fit = -1;
 784
 785                         for (i = 0; i < num_vidmodes; i++)
 786                         {
 787                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 788                                         continue;
 789
 790                                 x = width - vidmodes[i]->hdisplay;
 791                                 y = height - vidmodes[i]->vdisplay;
 792                                 dist = (x * x) + (y * y);
 793                                 if (dist < best_dist)
 794                                 {
 795                                         best_dist = dist;
 796                                         best_fit = i;
 797                                 }
 798                         }
 799
 800                         if (best_fit != -1)
 801                         {
 802                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 803                                 // to width/height =, so the window will take the full area of
 804                                 // the mode chosen
 805                                 width = vidmodes[best_fit]->hdisplay;
 806                                 height = vidmodes[best_fit]->vdisplay;
 807
 808                                 // change to the mode
 809                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 810                                 vid_isfullscreen = true;
 811
 812                                 // Move the viewport to top left
 813                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 814                         }
 815                         else
 816                                 fullscreen = 0;
 817
 818                         free(vidmodes);
 819                 }
 820         }
 821
 822         // LordHavoc: save the visual for use in gamma ramp settings later
 823         vidx11_visual = visinfo->visual;
 824
 825         /* window attributes */
 826         attr.background_pixel = 0;
 827         attr.border_pixel = 0;
 828         // LordHavoc: save the colormap for later, too
 829         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 830         attr.event_mask = X_MASK;
 831         if (vid_isfullscreen)
 832         {
 833                 if(vid_netwmfullscreen.integer)
 834                 {
 835                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask;
 836                         attr.backing_store = NotUseful;
 837                         attr.save_under = False;
 838                 }
 839                 else
 840                 {
 841                         mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 842                         attr.override_redirect = True;
 843                         attr.backing_store = NotUseful;
 844                         attr.save_under = False;
 845                 }
 846         }
 847         else
 848                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 849
 850         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 851
 852         wmhints = XAllocWMHints();
 853         if(XpmCreatePixmapFromData(vidx11_display, win,
 854                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 855                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 856                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 857
 858         clshints = XAllocClassHint();
 859         clshints->res_name = strdup(gamename);
 860         clshints->res_class = strdup("DarkPlaces");
 861
 862         szhints = XAllocSizeHints();
 863         if(vid_resizable.integer == 0)
 864         {
 865                 szhints->min_width = szhints->max_width = width;
 866                 szhints->min_height = szhints->max_height = height;
 867                 szhints->flags |= PMinSize | PMaxSize;
 868         }
 869
 870         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 871         XFree(clshints);
 872         XFree(wmhints);
 873         XFree(szhints);
 874
 875         if(vid_isfullscreen && vid_netwmfullscreen.integer)
 876         {
 877                 Atom net_wm_state_atom = XInternAtom(vidx11_display, "_NET_WM_STATE", false);
 878                 Atom net_wm_state_fullscreen_atom = XInternAtom(vidx11_display, "_NET_WM_STATE_FULLSCREEN", false);
 879                 XChangeProperty(vidx11_display, win, net_wm_state_atom, XA_ATOM, 32, PropModeReplace, (unsigned char *) &net_wm_state_fullscreen_atom, 1);
 880         }
 881
 882         //XStoreName(vidx11_display, win, gamename);
 883         XMapWindow(vidx11_display, win);
 884
 885         // LordHavoc: making the close button on a window do the right thing
 886         // seems to involve this mess, sigh...
 887         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 888         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 889
 890         if (vid_isfullscreen)
 891         {
 892                 XMoveWindow(vidx11_display, win, 0, 0);
 893                 XRaiseWindow(vidx11_display, win);
 894                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 895                 XFlush(vidx11_display);
 896                 // Move the viewport to top left
 897                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 898         }
 899
 900         //XSync(vidx11_display, False);
 901
 902         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 903         if (!ctx)
 904         {
 905                 Con_Printf ("glXCreateContext failed\n");
 906                 return false;
 907         }
 908
 909         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 910         {
 911                 Con_Printf ("glXMakeCurrent failed\n");
 912                 return false;
 913         }
 914
 915         XSync(vidx11_display, False);
 916
 917         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 918         {
 919                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 920                 return false;
 921         }
 922
 923         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 924         gl_platform = "GLX";
 925         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 926
 927         gl_videosyncavailable = false;
 928
 929 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 930 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 931 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 932         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 933 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 934 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 935 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 936         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 937
 938         vid_usingmousegrab = false;
 939         vid_usingmouse = false;
 940         vid_usinghidecursor = false;
 941         vid_usingvsync = false;
 942         vid_hidden = false;
 943         vid_activewindow = true;
 944         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 945 #if !defined(__APPLE__) && !defined(SUNOS)
 946         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 947         if (!vid_x11_dgasupported)
 948                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 949 #endif
 950         GL_Init();
 951         return true;
 952 }
 953
 954 void Sys_SendKeyEvents(void)
 955 {
 956         static qboolean sound_active = true;
 957
 958         // enable/disable sound on focus gain/loss
 959         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 960         {
 961                 if (!sound_active)
 962                 {
 963                         S_UnblockSound ();
 964                         sound_active = true;
 965                 }
 966         }
 967         else
 968         {
 969                 if (sound_active)
 970                 {
 971                         S_BlockSound ();
 972                         sound_active = false;
 973                 }
 974         }
 975
 976         HandleEvents();
 977 }
 978
 979 void IN_Move (void)
 980 {
 981 }