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