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