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.mouseaim)
 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) + abs(vid.height/2 - event.xmotion.y))
 384                                                 //if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
 385                                                         dowarp = true;
 386                                         }
 387                                 }
 388                         }
 389                         in_windowmouse_x = event.xmotion.x;
 390                         in_windowmouse_y = event.xmotion.y;
 391                         break;
 392
 393                 case ButtonPress:
 394                         // mouse button pressed
 395                         if (event.xbutton.button <= 18)
 396                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, true);
 397                         else
 398                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-18 expected\n", event.xbutton.button);
 399                         break;
 400
 401                 case ButtonRelease:
 402                         // mouse button released
 403                         if (event.xbutton.button <= 18)
 404                                 Key_Event(buttonremap[event.xbutton.button - 1], 0, false);
 405                         else
 406                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-18 expected\n", event.xbutton.button);
 407                         break;
 408
 409                 case CreateNotify:
 410                         // window created
 411                         win_x = event.xcreatewindow.x;
 412                         win_y = event.xcreatewindow.y;
 413                         break;
 414
 415                 case ConfigureNotify:
 416                         // window changed size/location
 417                         win_x = event.xconfigure.x;
 418                         win_y = event.xconfigure.y;
 419                         if(vid_resizable.integer < 2)
 420                         {
 421                                 vid.width = event.xconfigure.width;
 422                                 vid.height = event.xconfigure.height;
 423                         }
 424                         break;
 425                 case DestroyNotify:
 426                         // window has been destroyed
 427                         Sys_Quit(0);
 428                         break;
 429                 case ClientMessage:
 430                         // window manager messages
 431                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 432                                 Sys_Quit(0);
 433                         break;
 434                 case MapNotify:
 435                         if (vid.fullscreen)
 436                                 break;
 437                         // window restored
 438                         vid_hidden = false;
 439                         VID_RestoreSystemGamma();
 440                         break;
 441                 case UnmapNotify:
 442                         if (vid.fullscreen)
 443                                 break;
 444                         // window iconified/rolledup/whatever
 445                         vid_hidden = true;
 446                         VID_RestoreSystemGamma();
 447                         break;
 448                 case FocusIn:
 449                         if (vid.fullscreen)
 450                                 break;
 451                         // window is now the input focus
 452                         vid_activewindow = true;
 453                         break;
 454                 case FocusOut:
 455                         if (vid.fullscreen)
 456                                 break;
 457                         // window is no longer the input focus
 458                         vid_activewindow = false;
 459                         VID_RestoreSystemGamma();
 460                         break;
 461                 case EnterNotify:
 462                         // mouse entered window
 463                         break;
 464                 case LeaveNotify:
 465                         // mouse left window
 466                         break;
 467                 }
 468         }
 469
 470         if (dowarp)
 471         {
 472                 /* move the mouse to the window center again */
 473                 in_windowmouse_x = (int)(vid.width / 2);
 474                 in_windowmouse_y = (int)(vid.height / 2);
 475                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, (int)in_windowmouse_x, (int)in_windowmouse_y);
 476         }
 477 }
 478
 479 static void *prjobj = NULL;
 480
 481 static void GL_CloseLibrary(void)
 482 {
 483         if (prjobj)
 484                 dlclose(prjobj);
 485         prjobj = NULL;
 486         gl_driver[0] = 0;
 487         qglXGetProcAddressARB = NULL;
 488         gl_extensions = "";
 489         gl_platform = "";
 490         gl_platformextensions = "";
 491 }
 492
 493 static int GL_OpenLibrary(const char *name)
 494 {
 495         Con_Printf("Loading OpenGL driver %s\n", name);
 496         GL_CloseLibrary();
 497         if (!(prjobj = dlopen(name, RTLD_LAZY | RTLD_GLOBAL)))
 498         {
 499                 Con_Printf("Unable to open symbol list for %s\n", name);
 500                 return false;
 501         }
 502         strlcpy(gl_driver, name, sizeof(gl_driver));
 503         return true;
 504 }
 505
 506 void *GL_GetProcAddress(const char *name)
 507 {
 508         void *p = NULL;
 509         if (qglXGetProcAddressARB != NULL)
 510                 p = (void *) qglXGetProcAddressARB((GLubyte *)name);
 511         if (p == NULL)
 512                 p = (void *) dlsym(prjobj, name);
 513         return p;
 514 }
 515
 516 void VID_Shutdown(void)
 517 {
 518         if (!ctx || !vidx11_display)
 519                 return;
 520
 521         VID_GrabMouse(false);
 522         VID_RestoreSystemGamma();
 523
 524         // FIXME: glXDestroyContext here?
 525         if (vid_isfullscreen)
 526                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, &init_vidmode);
 527         if (win)
 528                 XDestroyWindow(vidx11_display, win);
 529         XCloseDisplay(vidx11_display);
 530
 531         vid_hidden = true;
 532         vid_isfullscreen = false;
 533         vidx11_display = NULL;
 534         win = 0;
 535         ctx = NULL;
 536
 537         GL_CloseLibrary();
 538         Key_ClearStates ();
 539 }
 540
 541 void signal_handler(int sig)
 542 {
 543         Con_Printf("Received signal %d, exiting...\n", sig);
 544         VID_RestoreSystemGamma();
 545         Sys_Quit(1);
 546 }
 547
 548 void InitSig(void)
 549 {
 550         signal(SIGHUP, signal_handler);
 551         signal(SIGINT, signal_handler);
 552         signal(SIGQUIT, signal_handler);
 553         signal(SIGILL, signal_handler);
 554         signal(SIGTRAP, signal_handler);
 555         signal(SIGIOT, signal_handler);
 556         signal(SIGBUS, signal_handler);
 557         signal(SIGFPE, signal_handler);
 558         signal(SIGSEGV, signal_handler);
 559         signal(SIGTERM, signal_handler);
 560 }
 561
 562 void VID_Finish (void)
 563 {
 564         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 565         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 566         {
 567                 vid_usingvsync = vid_usevsync;
 568                 if (qglXSwapIntervalSGI (vid_usevsync))
 569                         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");
 570         }
 571
 572         if (r_render.integer)
 573         {
 574                 CHECKGLERROR
 575                 if (r_speeds.integer || gl_finish.integer)
 576                 {
 577                         qglFinish();CHECKGLERROR
 578                 }
 579                 qglXSwapBuffers(vidx11_display, win);CHECKGLERROR
 580         }
 581
 582         if (vid_x11_hardwaregammasupported)
 583                 VID_UpdateGamma(false, vid_x11_gammarampsize);
 584 }
 585
 586 int VID_SetGamma(unsigned short *ramps, int rampsize)
 587 {
 588         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 589 }
 590
 591 int VID_GetGamma(unsigned short *ramps, int rampsize)
 592 {
 593         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, rampsize, ramps, ramps + rampsize, ramps + rampsize*2);
 594 }
 595
 596 void VID_Init(void)
 597 {
 598 #if !defined(__APPLE__) && !defined(SUNOS)
 599         Cvar_RegisterVariable (&vid_dgamouse);
 600 #endif
 601         InitSig(); // trap evil signals
 602 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 603         if (COM_CheckParm ("-nomouse"))
 604                 mouse_avail = false;
 605 }
 606
 607 void VID_BuildGLXAttrib(int *attrib, qboolean stencil, qboolean stereobuffer, int samples)
 608 {
 609         *attrib++ = GLX_RGBA;
 610         *attrib++ = GLX_RED_SIZE;*attrib++ = stencil ? 8 : 5;
 611         *attrib++ = GLX_GREEN_SIZE;*attrib++ = stencil ? 8 : 5;
 612         *attrib++ = GLX_BLUE_SIZE;*attrib++ = stencil ? 8 : 5;
 613         *attrib++ = GLX_DOUBLEBUFFER;
 614         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = stencil ? 24 : 16;
 615         // if stencil is enabled, ask for alpha too
 616         if (stencil)
 617         {
 618                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 619                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 8;
 620         }
 621         if (stereobuffer)
 622                 *attrib++ = GLX_STEREO;
 623         if (samples > 1)
 624         {
 625                 *attrib++ = GLX_SAMPLE_BUFFERS_ARB;
 626                 *attrib++ = 1;
 627                 *attrib++ = GLX_SAMPLES_ARB;
 628                 *attrib++ = samples;
 629         }
 630         *attrib++ = None;
 631 }
 632
 633 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer, int samples)
 634 {
 635         int i;
 636         int attrib[32];
 637         XSetWindowAttributes attr;
 638         XClassHint *clshints;
 639         XWMHints *wmhints;
 640         XSizeHints *szhints;
 641         unsigned long mask;
 642         Window root;
 643         XVisualInfo *visinfo;
 644         int MajorVersion, MinorVersion;
 645         const char *drivername;
 646
 647 #if defined(__APPLE__) && defined(__MACH__)
 648         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 649 #else
 650         drivername = "libGL.so.1";
 651 #endif
 652 // 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
 653 // 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
 654 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 655         i = COM_CheckParm("-gl_driver");
 656         if (i && i < com_argc - 1)
 657                 drivername = com_argv[i + 1];
 658         if (!GL_OpenLibrary(drivername))
 659         {
 660                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 661                 return false;
 662         }
 663
 664         if (!(vidx11_display = XOpenDisplay(NULL)))
 665         {
 666                 Con_Print("Couldn't open the X display\n");
 667                 return false;
 668         }
 669
 670         vidx11_screen = DefaultScreen(vidx11_display);
 671         root = RootWindow(vidx11_display, vidx11_screen);
 672
 673         // Get video mode list
 674         MajorVersion = MinorVersion = 0;
 675         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 676                 vidmode_ext = false;
 677         else
 678         {
 679                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 680                 vidmode_ext = true;
 681         }
 682
 683         if ((qglXChooseVisual = (XVisualInfo *(GLAPIENTRY *)(Display *dpy, int screen, int *attribList))GL_GetProcAddress("glXChooseVisual")) == NULL
 684          || (qglXCreateContext = (GLXContext (GLAPIENTRY *)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct))GL_GetProcAddress("glXCreateContext")) == NULL
 685          || (qglXDestroyContext = (void (GLAPIENTRY *)(Display *dpy, GLXContext ctx))GL_GetProcAddress("glXDestroyContext")) == NULL
 686          || (qglXMakeCurrent = (Bool (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable, GLXContext ctx))GL_GetProcAddress("glXMakeCurrent")) == NULL
 687          || (qglXSwapBuffers = (void (GLAPIENTRY *)(Display *dpy, GLXDrawable drawable))GL_GetProcAddress("glXSwapBuffers")) == NULL
 688          || (qglXQueryExtensionsString = (const char *(GLAPIENTRY *)(Display *dpy, int screen))GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 689         {
 690                 Con_Printf("glX functions not found in %s\n", gl_driver);
 691                 return false;
 692         }
 693
 694         VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, samples);
 695         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 696         if (!visinfo && (samples == 1))
 697         {
 698                 /* Some Mesa drivers reject sample buffers with 1 sample, so try
 699                  * entirely without one */
 700                 VID_BuildGLXAttrib(attrib, bpp == 32, stereobuffer, 0);
 701                 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 702         }
 703         if (!visinfo)
 704         {
 705                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 706                 return false;
 707         }
 708
 709         if (vidmode_ext)
 710         {
 711                 int best_fit, best_dist, dist, x, y;
 712
 713                 // Are we going fullscreen?  If so, let's change video mode
 714                 if (fullscreen)
 715                 {
 716                         XF86VidModeModeLine *current_vidmode;
 717                         XF86VidModeModeInfo **vidmodes;
 718                         int num_vidmodes;
 719
 720                         // This nice hack comes from the SDL source code
 721                         current_vidmode = (XF86VidModeModeLine*)((char*)&init_vidmode + sizeof(init_vidmode.dotclock));
 722                         XF86VidModeGetModeLine(vidx11_display, vidx11_screen, (int*)&init_vidmode.dotclock, current_vidmode);
 723
 724                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 725                         best_dist = 9999999;
 726                         best_fit = -1;
 727
 728                         for (i = 0; i < num_vidmodes; i++)
 729                         {
 730                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 731                                         continue;
 732
 733                                 x = width - vidmodes[i]->hdisplay;
 734                                 y = height - vidmodes[i]->vdisplay;
 735                                 dist = (x * x) + (y * y);
 736                                 if (dist < best_dist)
 737                                 {
 738                                         best_dist = dist;
 739                                         best_fit = i;
 740                                 }
 741                         }
 742
 743                         if (best_fit != -1)
 744                         {
 745                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 746                                 // to width/height =, so the window will take the full area of
 747                                 // the mode chosen
 748                                 width = vidmodes[best_fit]->hdisplay;
 749                                 height = vidmodes[best_fit]->vdisplay;
 750
 751                                 // change to the mode
 752                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 753                                 vid_isfullscreen = true;
 754
 755                                 // Move the viewport to top left
 756                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 757                         }
 758                         else
 759                                 fullscreen = 0;
 760
 761                         free(vidmodes);
 762                 }
 763         }
 764
 765         // LordHavoc: save the visual for use in gamma ramp settings later
 766         vidx11_visual = visinfo->visual;
 767
 768         /* window attributes */
 769         attr.background_pixel = 0;
 770         attr.border_pixel = 0;
 771         // LordHavoc: save the colormap for later, too
 772         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 773         attr.event_mask = X_MASK;
 774         if (vid_isfullscreen)
 775         {
 776                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 777                 attr.override_redirect = True;
 778                 attr.backing_store = NotUseful;
 779                 attr.save_under = False;
 780         }
 781         else
 782                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 783
 784         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 785
 786         wmhints = XAllocWMHints();
 787         if(XpmCreatePixmapFromData(vidx11_display, win,
 788                 (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm,
 789                 &wmhints->icon_pixmap, &wmhints->icon_mask, NULL) == XpmSuccess)
 790                 wmhints->flags |= IconPixmapHint | IconMaskHint;
 791
 792         clshints = XAllocClassHint();
 793         clshints->res_name = strdup(gamename);
 794         clshints->res_class = strdup("DarkPlaces");
 795
 796         szhints = XAllocSizeHints();
 797         if(vid_resizable.integer == 0)
 798         {
 799                 szhints->min_width = szhints->max_width = width;
 800                 szhints->min_height = szhints->max_height = height;
 801                 szhints->flags |= PMinSize | PMaxSize;
 802         }
 803
 804         XmbSetWMProperties(vidx11_display, win, gamename, gamename, (char **) com_argv, com_argc, szhints, wmhints, clshints);
 805         XFree(clshints);
 806         XFree(wmhints);
 807         XFree(szhints);
 808         //XStoreName(vidx11_display, win, gamename);
 809         XMapWindow(vidx11_display, win);
 810
 811         // LordHavoc: making the close button on a window do the right thing
 812         // seems to involve this mess, sigh...
 813         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 814         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 815
 816         if (vid_isfullscreen)
 817         {
 818                 XMoveWindow(vidx11_display, win, 0, 0);
 819                 XRaiseWindow(vidx11_display, win);
 820                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 821                 XFlush(vidx11_display);
 822                 // Move the viewport to top left
 823                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 824         }
 825
 826         //XSync(vidx11_display, False);
 827
 828         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 829         if (!ctx)
 830         {
 831                 Con_Printf ("glXCreateContext failed\n");
 832                 return false;
 833         }
 834
 835         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 836         {
 837                 Con_Printf ("glXMakeCurrent failed\n");
 838                 return false;
 839         }
 840
 841         XSync(vidx11_display, False);
 842
 843         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 844         {
 845                 Con_Printf ("glGetString not found in %s\n", gl_driver);
 846                 return false;
 847         }
 848
 849         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
 850         gl_platform = "GLX";
 851         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 852
 853         gl_videosyncavailable = false;
 854
 855 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 856 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 857 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 858         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 859 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 860 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 861 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 862         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 863
 864         vid_usingmouse = false;
 865         vid_usingvsync = false;
 866         vid_hidden = false;
 867         vid_activewindow = true;
 868         vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
 869 #if !defined(__APPLE__) && !defined(SUNOS)
 870         vid_x11_dgasupported = XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion);
 871         if (!vid_x11_dgasupported)
 872                 Con_Print( "Failed to detect XF86DGA Mouse extension\n" );
 873 #endif
 874         GL_Init();
 875         return true;
 876 }
 877
 878 void Sys_SendKeyEvents(void)
 879 {
 880         static qboolean sound_active = true;
 881
 882         // enable/disable sound on focus gain/loss
 883         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
 884         {
 885                 if (!sound_active)
 886                 {
 887                         S_UnblockSound ();
 888                         sound_active = true;
 889                 }
 890         }
 891         else
 892         {
 893                 if (sound_active)
 894                 {
 895                         S_BlockSound ();
 896                         sound_active = false;
 897                 }
 898         }
 899
 900         HandleEvents();
 901 }
 902
 903 void IN_Move (void)
 904 {
 905 }