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