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 <termios.h>
  21 //#include <sys/ioctl.h>
  22 //#include <sys/stat.h>
  23 //#include <sys/vt.h>
  24 //#include <stdarg.h>
  25 //#include <stdio.h>
  26 #include <signal.h>
  27
  28 #include <dlfcn.h>
  29
  30 #include <X11/Xlib.h>
  31 #include <X11/Xutil.h>
  32 #include <GL/glx.h>
  33
  34 #include <X11/keysym.h>
  35 #include <X11/cursorfont.h>
  36
  37 #include <X11/extensions/XShm.h>
  38 #include <X11/extensions/xf86dga.h>
  39 #include <X11/extensions/xf86vmode.h>
  40
  41 #include "quakedef.h"
  42
  43 int cl_available = true;
  44
  45 //GLX prototypes
  46 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  47 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  48 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  49 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  50 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  51 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  52
  53 //GLX_ARB_get_proc_address
  54 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  55
  56 static dllfunction_t getprocaddressfuncs[] =
  57 {
  58         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  59         {NULL, NULL}
  60 };
  61
  62 //GLX_SGI_video_sync
  63 GLint (GLAPIENTRY *qglXGetVideoSyncSGI)(GLuint *count);
  64 GLint (GLAPIENTRY *qglXWaitVideoSyncSGI)(GLint divisor, GLint remainder, GLuint *count);
  65
  66 static dllfunction_t videosyncfuncs[] =
  67 {
  68         {"glXGetVideoSyncSGI", (void **) &qglXGetVideoSyncSGI},
  69         {"glXWaitVideoSyncSGI", (void **) &qglXWaitVideoSyncSGI},
  70         {NULL, NULL}
  71 };
  72
  73 static Display *vidx11_display = NULL;
  74 static int vidx11_screen;
  75 static Window win;
  76 static GLXContext ctx = NULL;
  77
  78 Atom wm_delete_window_atom;
  79
  80 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  81 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  82                     PointerMotionMask | ButtonMotionMask)
  83 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  84                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  85                 LeaveWindowMask)
  86
  87
  88 static qboolean         mouse_avail = true;
  89 static qboolean         mouse_active = false, usingmouse = false;
  90 static float    mouse_x, mouse_y;
  91 static int p_mouse_x, p_mouse_y;
  92
  93 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  94 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
  95
  96 qboolean vidmode_ext = false;
  97
  98 static int win_x, win_y;
  99
 100 static int scr_width, scr_height;
 101
 102 static XF86VidModeModeInfo **vidmodes;
 103 static int num_vidmodes;
 104 static qboolean vidmode_active = false;
 105
 106 static Visual *vidx11_visual;
 107 static Colormap vidx11_colormap;
 108
 109 /*-----------------------------------------------------------------------*/
 110
 111 static int XLateKey(XKeyEvent *ev)
 112 {
 113         int key = 0;
 114         char buf[64];
 115         KeySym keysym;
 116
 117         XLookupString(ev, buf, sizeof buf, &keysym, 0);
 118
 119         switch(keysym)
 120         {
 121                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 122                 case XK_Page_Up:         key = K_PGUP; break;
 123
 124                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 125                 case XK_Page_Down:       key = K_PGDN; break;
 126
 127                 case XK_KP_Home: key = K_KP_HOME; break;
 128                 case XK_Home:    key = K_HOME; break;
 129
 130                 case XK_KP_End:  key = K_KP_END; break;
 131                 case XK_End:     key = K_END; break;
 132
 133                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 134                 case XK_Left:    key = K_LEFTARROW; break;
 135
 136                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 137                 case XK_Right:  key = K_RIGHTARROW;             break;
 138
 139                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 140                 case XK_Down:    key = K_DOWNARROW; break;
 141
 142                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 143                 case XK_Up:              key = K_UPARROW;        break;
 144
 145                 case XK_Escape: key = K_ESCAPE;         break;
 146
 147                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 148                 case XK_Return: key = K_ENTER;           break;
 149
 150                 case XK_Tab:            key = K_TAB;                     break;
 151
 152                 case XK_F1:              key = K_F1;                            break;
 153
 154                 case XK_F2:              key = K_F2;                            break;
 155
 156                 case XK_F3:              key = K_F3;                            break;
 157
 158                 case XK_F4:              key = K_F4;                            break;
 159
 160                 case XK_F5:              key = K_F5;                            break;
 161
 162                 case XK_F6:              key = K_F6;                            break;
 163
 164                 case XK_F7:              key = K_F7;                            break;
 165
 166                 case XK_F8:              key = K_F8;                            break;
 167
 168                 case XK_F9:              key = K_F9;                            break;
 169
 170                 case XK_F10:            key = K_F10;                     break;
 171
 172                 case XK_F11:            key = K_F11;                     break;
 173
 174                 case XK_F12:            key = K_F12;                     break;
 175
 176                 case XK_BackSpace: key = K_BACKSPACE; break;
 177
 178                 case XK_KP_Delete: key = K_KP_DEL; break;
 179                 case XK_Delete: key = K_DEL; break;
 180
 181                 case XK_Pause:  key = K_PAUSE;           break;
 182
 183                 case XK_Shift_L:
 184                 case XK_Shift_R:        key = K_SHIFT;          break;
 185
 186                 case XK_Execute:
 187                 case XK_Control_L:
 188                 case XK_Control_R:      key = K_CTRL;            break;
 189
 190                 case XK_Alt_L:
 191                 case XK_Meta_L:
 192                 case XK_Alt_R:
 193                 case XK_Meta_R: key = K_ALT;                    break;
 194
 195                 case XK_KP_Begin: key = K_KP_5; break;
 196
 197                 case XK_Insert:key = K_INS; break;
 198                 case XK_KP_Insert: key = K_KP_INS; break;
 199
 200                 case XK_KP_Multiply: key = '*'; break;
 201                 case XK_KP_Add:  key = K_KP_PLUS; break;
 202                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 203                 case XK_KP_Divide: key = K_KP_SLASH; break;
 204
 205 #if 0
 206                 case 0x021: key = '1';break;/* [!] */
 207                 case 0x040: key = '2';break;/* [@] */
 208                 case 0x023: key = '3';break;/* [#] */
 209                 case 0x024: key = '4';break;/* [$] */
 210                 case 0x025: key = '5';break;/* [%] */
 211                 case 0x05e: key = '6';break;/* [^] */
 212                 case 0x026: key = '7';break;/* [&] */
 213                 case 0x02a: key = '8';break;/* [*] */
 214                 case 0x028: key = '9';;break;/* [(] */
 215                 case 0x029: key = '0';break;/* [)] */
 216                 case 0x05f: key = '-';break;/* [_] */
 217                 case 0x02b: key = '=';break;/* [+] */
 218                 case 0x07c: key = '\'';break;/* [|] */
 219                 case 0x07d: key = '[';break;/* [}] */
 220                 case 0x07b: key = ']';break;/* [{] */
 221                 case 0x022: key = '\'';break;/* ["] */
 222                 case 0x03a: key = ';';break;/* [:] */
 223                 case 0x03f: key = '/';break;/* [?] */
 224                 case 0x03e: key = '.';break;/* [>] */
 225                 case 0x03c: key = ',';break;/* [<] */
 226 #endif
 227
 228                 default:
 229                         key = *(unsigned char*)buf;
 230                         if (key >= 'A' && key <= 'Z')
 231                                 key = key - 'A' + 'a';
 232                         break;
 233         }
 234
 235         return key;
 236 }
 237
 238 static Cursor CreateNullCursor(Display *display, Window root)
 239 {
 240         Pixmap cursormask;
 241         XGCValues xgc;
 242         GC gc;
 243         XColor dummycolour;
 244         Cursor cursor;
 245
 246         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 247         xgc.function = GXclear;
 248         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 249         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 250         dummycolour.pixel = 0;
 251         dummycolour.red = 0;
 252         dummycolour.flags = 04;
 253         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 254         XFreePixmap(display,cursormask);
 255         XFreeGC(display,gc);
 256         return cursor;
 257 }
 258
 259 static void install_grabs(void)
 260 {
 261         XWindowAttributes attribs_1;
 262         XSetWindowAttributes attribs_2;
 263
 264         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 265         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 266         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 267
 268 // inviso cursor
 269         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 270
 271         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 272
 273         if (vid_dga.integer)
 274         {
 275                 int MajorVersion, MinorVersion;
 276
 277                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 278                 {
 279                         // unable to query, probalby not supported
 280                         Con_Printf( "Failed to detect XF86DGA Mouse\n" );
 281                         vid_dga.integer = 0;
 282                 }
 283                 else
 284                 {
 285                         vid_dga.integer = 1;
 286                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 287                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 288                 }
 289         }
 290         else
 291                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 292
 293         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 294
 295         mouse_active = true;
 296         mouse_x = mouse_y = 0;
 297 }
 298
 299 static void uninstall_grabs(void)
 300 {
 301         if (!vidx11_display || !win)
 302                 return;
 303
 304         if (vid_dga.integer == 1)
 305                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 306
 307         XUngrabPointer(vidx11_display, CurrentTime);
 308         XUngrabKeyboard(vidx11_display, CurrentTime);
 309
 310 // inviso cursor
 311         XUndefineCursor(vidx11_display, win);
 312
 313         mouse_active = false;
 314 }
 315
 316 static void HandleEvents(void)
 317 {
 318         XEvent event;
 319         qboolean dowarp = false;
 320
 321         if (!vidx11_display)
 322                 return;
 323
 324         while (XPending(vidx11_display))
 325         {
 326                 XNextEvent(vidx11_display, &event);
 327
 328                 switch (event.type)
 329                 {
 330                 case KeyPress:
 331                         // key pressed
 332                         Key_Event(XLateKey(&event.xkey), true);
 333                         break;
 334
 335                 case KeyRelease:
 336                         // key released
 337                         Key_Event(XLateKey(&event.xkey), false);
 338                         break;
 339
 340                 case MotionNotify:
 341                         // mouse moved
 342                         if (usingmouse)
 343                         {
 344                                 if (vid_dga.integer == 1)
 345                                 {
 346                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 347                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 348                                 }
 349                                 else
 350                                 {
 351
 352                                         if (!event.xmotion.send_event)
 353                                         {
 354                                                 mouse_x += event.xmotion.x - p_mouse_x;
 355                                                 mouse_y += event.xmotion.y - p_mouse_y;
 356                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 357                                                         dowarp = true;
 358                                         }
 359                                         p_mouse_x = event.xmotion.x;
 360                                         p_mouse_y = event.xmotion.y;
 361                                 }
 362                         }
 363                         else
 364                                 ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 365                         break;
 366
 367                 case ButtonPress:
 368                         // mouse button pressed
 369                         switch(event.xbutton.button)
 370                         {
 371                         case 1:
 372                                 Key_Event(K_MOUSE1, true);
 373                                 break;
 374                         case 2:
 375                                 Key_Event(K_MOUSE3, true);
 376                                 break;
 377                         case 3:
 378                                 Key_Event(K_MOUSE2, true);
 379                                 break;
 380                         case 4:
 381                                 Key_Event(K_MWHEELUP, true);
 382                                 break;
 383                         case 5:
 384                                 Key_Event(K_MWHEELDOWN, true);
 385                                 break;
 386                         case 6:
 387                                 Key_Event(K_MOUSE4, true);
 388                                 break;
 389                         case 7:
 390                                 Key_Event(K_MOUSE5, true);
 391                                 break;
 392                         case 8:
 393                                 Key_Event(K_MOUSE6, true);
 394                                 break;
 395                         case 9:
 396                                 Key_Event(K_MOUSE7, true);
 397                                 break;
 398                         case 10:
 399                                 Key_Event(K_MOUSE8, true);
 400                                 break;
 401                         case 11:
 402                                 Key_Event(K_MOUSE9, true);
 403                                 break;
 404                         case 12:
 405                                 Key_Event(K_MOUSE10, true);
 406                                 break;
 407                         default:
 408                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-12 expected\n", event.xbutton.button);
 409                                 break;
 410                         }
 411                         break;
 412
 413                 case ButtonRelease:
 414                         // mouse button released
 415                         switch(event.xbutton.button)
 416                         {
 417                         case 1:
 418                                 Key_Event(K_MOUSE1, false);
 419                                 break;
 420                         case 2:
 421                                 Key_Event(K_MOUSE3, false);
 422                                 break;
 423                         case 3:
 424                                 Key_Event(K_MOUSE2, false);
 425                                 break;
 426                         case 4:
 427                                 Key_Event(K_MWHEELUP, false);
 428                                 break;
 429                         case 5:
 430                                 Key_Event(K_MWHEELDOWN, false);
 431                                 break;
 432                         case 6:
 433                                 Key_Event(K_MOUSE4, false);
 434                                 break;
 435                         case 7:
 436                                 Key_Event(K_MOUSE5, false);
 437                                 break;
 438                         case 8:
 439                                 Key_Event(K_MOUSE6, false);
 440                                 break;
 441                         case 9:
 442                                 Key_Event(K_MOUSE7, false);
 443                                 break;
 444                         case 10:
 445                                 Key_Event(K_MOUSE8, false);
 446                                 break;
 447                         case 11:
 448                                 Key_Event(K_MOUSE9, false);
 449                                 break;
 450                         case 12:
 451                                 Key_Event(K_MOUSE10, false);
 452                                 break;
 453                         default:
 454                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-12 expected\n", event.xbutton.button);
 455                                 break;
 456                         }
 457                         break;
 458
 459                 case CreateNotify:
 460                         // window created
 461                         win_x = event.xcreatewindow.x;
 462                         win_y = event.xcreatewindow.y;
 463                         break;
 464
 465                 case ConfigureNotify:
 466                         // window changed size/location
 467                         win_x = event.xconfigure.x;
 468                         win_y = event.xconfigure.y;
 469                         break;
 470                 case DestroyNotify:
 471                         // window has been destroyed
 472                         Sys_Quit();
 473                         break;
 474                 case ClientMessage:
 475                         // window manager messages
 476                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 477                                 Sys_Quit();
 478                         break;
 479                 case MapNotify:
 480                         // window restored
 481                         vid_hidden = false;
 482                         vid_allowhwgamma = true;
 483                         break;
 484                 case UnmapNotify:
 485                         // window iconified/rolledup/whatever
 486                         vid_hidden = true;
 487                         vid_allowhwgamma = false;
 488                         VID_RestoreSystemGamma();
 489                         break;
 490                 case FocusIn:
 491                         // window is now the input focus
 492                         vid_allowhwgamma = true;
 493                         break;
 494                 case FocusOut:
 495                         // window is no longer the input focus
 496                         vid_allowhwgamma = false;
 497                         VID_RestoreSystemGamma();
 498                         break;
 499                 case EnterNotify:
 500                         // mouse entered window
 501                         vid_allowhwgamma = true;
 502                         break;
 503                 case LeaveNotify:
 504                         // mouse left window
 505                         vid_allowhwgamma = false;
 506                         VID_RestoreSystemGamma();
 507                         break;
 508                 }
 509         }
 510
 511         if (dowarp)
 512         {
 513                 /* move the mouse to the window center again */
 514                 p_mouse_x = scr_width / 2;
 515                 p_mouse_y = scr_height / 2;
 516                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 517         }
 518
 519 }
 520
 521 static void IN_DeactivateMouse( void )
 522 {
 523         if (!mouse_avail || !vidx11_display || !win)
 524                 return;
 525
 526         if (mouse_active)
 527         {
 528                 uninstall_grabs();
 529                 mouse_active = false;
 530         }
 531 }
 532
 533 static void IN_ActivateMouse( void )
 534 {
 535         if (!mouse_avail || !vidx11_display || !win)
 536                 return;
 537
 538         if (!mouse_active)
 539         {
 540                 mouse_x = mouse_y = 0; // don't spazz
 541                 install_grabs();
 542                 mouse_active = true;
 543         }
 544 }
 545
 546 void VID_Shutdown(void)
 547 {
 548         if (!ctx || !vidx11_display)
 549                 return;
 550
 551         vid_hidden = true;
 552         usingmouse = false;
 553         if (vidx11_display)
 554         {
 555                 VID_RestoreSystemGamma();
 556                 uninstall_grabs();
 557
 558                 // FIXME: glXDestroyContext here?
 559                 if (vidmode_active)
 560                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
 561                 if (win)
 562                         XDestroyWindow(vidx11_display, win);
 563                 XCloseDisplay(vidx11_display);
 564         }
 565         vidmode_active = false;
 566         vidx11_display = NULL;
 567         win = 0;
 568         ctx = NULL;
 569
 570         GL_CloseLibrary();
 571 }
 572
 573 void signal_handler(int sig)
 574 {
 575         printf("Received signal %d, exiting...\n", sig);
 576         VID_RestoreSystemGamma();
 577         Sys_Quit();
 578         exit(0);
 579 }
 580
 581 void InitSig(void)
 582 {
 583         signal(SIGHUP, signal_handler);
 584         signal(SIGINT, signal_handler);
 585         signal(SIGQUIT, signal_handler);
 586         signal(SIGILL, signal_handler);
 587         signal(SIGTRAP, signal_handler);
 588         signal(SIGIOT, signal_handler);
 589         signal(SIGBUS, signal_handler);
 590         signal(SIGFPE, signal_handler);
 591         signal(SIGSEGV, signal_handler);
 592         signal(SIGTERM, signal_handler);
 593 }
 594
 595 /*
 596 =================
 597 VID_GetWindowSize
 598 =================
 599 */
 600 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 601 {
 602         *x = *y = 0;
 603         *width = scr_width;
 604         *height = scr_height;
 605 }
 606
 607 void VID_Finish (void)
 608 {
 609         int usemouse;
 610         if (r_render.integer)
 611         {
 612                 qglFinish();
 613                 qglXSwapBuffers(vidx11_display, win);
 614         }
 615
 616 // handle the mouse state when windowed if that's changed
 617         usemouse = false;
 618         if (vid_mouse.integer && !key_consoleactive)
 619                 usemouse = true;
 620         if (vidmode_active)
 621                 usemouse = true;
 622         if (usemouse)
 623         {
 624                 if (!usingmouse)
 625                 {
 626                         usingmouse = true;
 627                         IN_ActivateMouse ();
 628                 }
 629         }
 630         else
 631         {
 632                 if (usingmouse)
 633                 {
 634                         usingmouse = false;
 635                         IN_DeactivateMouse ();
 636                 }
 637         }
 638 }
 639
 640 int VID_SetGamma(unsigned short *ramps)
 641 {
 642         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 643 }
 644
 645 int VID_GetGamma(unsigned short *ramps)
 646 {
 647         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 648 }
 649
 650 void VID_Init(void)
 651 {
 652         Cvar_RegisterVariable (&vid_dga);
 653         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 654         InitSig(); // trap evil signals
 655         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 656                 mouse_avail = false;
 657 }
 658
 659 void VID_BuildGLXAttrib(int *attrib, int stencil)
 660 {
 661         *attrib++ = GLX_RGBA;
 662         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
 663         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
 664         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
 665         *attrib++ = GLX_DOUBLEBUFFER;
 666         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
 667         // if stencil is enabled, ask for alpha too
 668         if (stencil)
 669         {
 670                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 671                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
 672         }
 673         *attrib++ = None;
 674 }
 675
 676 int VID_InitMode(int fullscreen, int width, int height, int bpp, int stencil)
 677 {
 678         int i;
 679         int attrib[32];
 680         XSetWindowAttributes attr;
 681         unsigned long mask;
 682         Window root;
 683         XVisualInfo *visinfo;
 684         int MajorVersion, MinorVersion;
 685         const char *drivername;
 686
 687         drivername = "libGL.so.1";
 688         i = COM_CheckParm("-gl_driver");
 689         if (i && i < com_argc - 1)
 690                 drivername = com_argv[i + 1];
 691         if (!GL_OpenLibrary(drivername))
 692         {
 693                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 694                 return false;
 695         }
 696
 697         if (!(vidx11_display = XOpenDisplay(NULL)))
 698         {
 699                 Con_Printf("Couldn't open the X display\n");
 700                 return false;
 701         }
 702
 703         vidx11_screen = DefaultScreen(vidx11_display);
 704         root = RootWindow(vidx11_display, vidx11_screen);
 705
 706         // Get video mode list
 707         MajorVersion = MinorVersion = 0;
 708         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 709                 vidmode_ext = false;
 710         else
 711         {
 712                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 713                 vidmode_ext = true;
 714         }
 715
 716         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 717          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 718          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 719          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 720          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 721         {
 722                 Con_Printf("glX functions not found in %s\n", gl_driver);
 723                 return false;
 724         }
 725
 726         VID_BuildGLXAttrib(attrib, stencil);
 727         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 728         if (!visinfo)
 729         {
 730                 Con_Printf("Couldn't get an RGB, Double-buffered, Depth visual\n");
 731                 return false;
 732         }
 733
 734         if (vidmode_ext)
 735         {
 736                 int best_fit, best_dist, dist, x, y;
 737
 738                 // Are we going fullscreen?  If so, let's change video mode
 739                 if (fullscreen)
 740                 {
 741                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 742                         best_dist = 9999999;
 743                         best_fit = -1;
 744
 745                         for (i = 0; i < num_vidmodes; i++)
 746                         {
 747                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 748                                         continue;
 749
 750                                 x = width - vidmodes[i]->hdisplay;
 751                                 y = height - vidmodes[i]->vdisplay;
 752                                 dist = (x * x) + (y * y);
 753                                 if (dist < best_dist)
 754                                 {
 755                                         best_dist = dist;
 756                                         best_fit = i;
 757                                 }
 758                         }
 759
 760                         if (best_fit != -1)
 761                         {
 762                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 763                                 // to width/height =, so the window will take the full area of
 764                                 // the mode chosen
 765                                 width = vidmodes[best_fit]->hdisplay;
 766                                 height = vidmodes[best_fit]->vdisplay;
 767
 768                                 // change to the mode
 769                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 770                                 vidmode_active = true;
 771
 772                                 // Move the viewport to top left
 773                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 774                         }
 775                         else
 776                                 fullscreen = 0;
 777                 }
 778         }
 779
 780         // LordHavoc: save the visual for use in gamma ramp settings later
 781         vidx11_visual = visinfo->visual;
 782
 783         /* window attributes */
 784         attr.background_pixel = 0;
 785         attr.border_pixel = 0;
 786         // LordHavoc: save the colormap for later, too
 787         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 788         attr.event_mask = X_MASK;
 789         if (vidmode_active)
 790         {
 791                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 792                 attr.override_redirect = True;
 793                 attr.backing_store = NotUseful;
 794                 attr.save_under = False;
 795         }
 796         else
 797                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 798
 799         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 800         XStoreName(vidx11_display, win, gamename);
 801         XMapWindow(vidx11_display, win);
 802
 803         // LordHavoc: making the close button on a window do the right thing
 804         // seems to involve this mess, sigh...
 805         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 806         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 807
 808         if (vidmode_active)
 809         {
 810                 XMoveWindow(vidx11_display, win, 0, 0);
 811                 XRaiseWindow(vidx11_display, win);
 812                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 813                 XFlush(vidx11_display);
 814                 // Move the viewport to top left
 815                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 816         }
 817
 818         //XSync(vidx11_display, False);
 819
 820         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 821         if (!ctx)
 822                 Sys_Error ("glXCreateContext failed\n");
 823
 824         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 825                 Sys_Error ("glXMakeCurrent failed\n");
 826
 827         XSync(vidx11_display, False);
 828
 829         scr_width = width;
 830         scr_height = height;
 831
 832         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 833                 Sys_Error("glGetString not found in %s", gl_driver);
 834
 835         gl_renderer = qglGetString(GL_RENDERER);
 836         gl_vendor = qglGetString(GL_VENDOR);
 837         gl_version = qglGetString(GL_VERSION);
 838         gl_extensions = qglGetString(GL_EXTENSIONS);
 839         gl_platform = "GLX";
 840         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 841
 842         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 843         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_video_sync", videosyncfuncs, "-novideosync", false);
 844
 845         usingmouse = false;
 846         vid_hidden = false;
 847         vid_allowhwgamma = true;
 848         GL_Init();
 849         return true;
 850 }
 851
 852 void Sys_SendKeyEvents(void)
 853 {
 854         HandleEvents();
 855 }
 856
 857 /*
 858 ===========
 859 IN_Commands
 860 ===========
 861 */
 862 void IN_Commands (void)
 863 {
 864 }
 865
 866 void IN_Move (usercmd_t *cmd)
 867 {
 868         if (mouse_avail)
 869                 IN_Mouse(cmd, mouse_x, mouse_y);
 870         mouse_x = 0;
 871         mouse_y = 0;
 872 }
 873
 874 static void *prjobj = NULL;
 875
 876 int GL_OpenLibrary(const char *name)
 877 {
 878         Con_Printf("Loading OpenGL driver %s\n", name);
 879         GL_CloseLibrary();
 880         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 881         {
 882                 Con_Printf("Unable to open symbol list for %s\n", name);
 883                 return false;
 884         }
 885         strcpy(gl_driver, name);
 886         return true;
 887 }
 888
 889 void GL_CloseLibrary(void)
 890 {
 891         if (prjobj)
 892                 dlclose(prjobj);
 893         prjobj = NULL;
 894         gl_driver[0] = 0;
 895         qglXGetProcAddressARB = NULL;
 896         gl_extensions = "";
 897         gl_platform = "";
 898         gl_platformextensions = "";
 899 }
 900
 901 void *GL_GetProcAddress(const char *name)
 902 {
 903         void *p = NULL;
 904         if (qglXGetProcAddressARB != NULL)
 905                 p = (void *) qglXGetProcAddressARB(name);
 906         if (p == NULL)
 907                 p = (void *) dlsym(prjobj, name);
 908         return p;
 909 }
 910