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 #if !defined(__APPLE__) && !defined(__MACH__)
  39 #include <X11/extensions/xf86dga.h>
  40 #endif
  41 #include <X11/extensions/xf86vmode.h>
  42
  43 #include "quakedef.h"
  44
  45 // Tell startup code that we have a client
  46 int cl_available = true;
  47
  48 //GLX prototypes
  49 XVisualInfo *(GLAPIENTRY *qglXChooseVisual)(Display *dpy, int screen, int *attribList);
  50 GLXContext (GLAPIENTRY *qglXCreateContext)(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct);
  51 void (GLAPIENTRY *qglXDestroyContext)(Display *dpy, GLXContext ctx);
  52 Bool (GLAPIENTRY *qglXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
  53 void (GLAPIENTRY *qglXSwapBuffers)(Display *dpy, GLXDrawable drawable);
  54 const char *(GLAPIENTRY *qglXQueryExtensionsString)(Display *dpy, int screen);
  55
  56 //GLX_ARB_get_proc_address
  57 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
  58
  59 static dllfunction_t getprocaddressfuncs[] =
  60 {
  61         {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
  62         {NULL, NULL}
  63 };
  64
  65 //GLX_SGI_video_sync
  66 GLint (GLAPIENTRY *qglXGetVideoSyncSGI)(GLuint *count);
  67 GLint (GLAPIENTRY *qglXWaitVideoSyncSGI)(GLint divisor, GLint remainder, GLuint *count);
  68
  69 static dllfunction_t videosyncfuncs[] =
  70 {
  71         {"glXGetVideoSyncSGI", (void **) &qglXGetVideoSyncSGI},
  72         {"glXWaitVideoSyncSGI", (void **) &qglXWaitVideoSyncSGI},
  73         {NULL, NULL}
  74 };
  75
  76 static Display *vidx11_display = NULL;
  77 static int vidx11_screen;
  78 static Window win;
  79 static GLXContext ctx = NULL;
  80
  81 Atom wm_delete_window_atom;
  82
  83 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  84 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  85                     PointerMotionMask | ButtonMotionMask)
  86 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  87                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  88                 LeaveWindowMask)
  89
  90
  91 static qboolean         mouse_avail = true;
  92 static qboolean         mouse_active = false, usingmouse = false, ignoremousemove = false;
  93 static float    mouse_x, mouse_y;
  94 static int p_mouse_x, p_mouse_y;
  95
  96 #ifndef __APPLE__
  97 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  98 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
  99 #endif
 100
 101 qboolean vidmode_ext = false;
 102
 103 static int win_x, win_y;
 104
 105 static int scr_width, scr_height;
 106
 107 static XF86VidModeModeInfo **vidmodes;
 108 static int num_vidmodes;
 109 static qboolean vidmode_active = false;
 110
 111 static Visual *vidx11_visual;
 112 static Colormap vidx11_colormap;
 113
 114 /*-----------------------------------------------------------------------*/
 115
 116 static int XLateKey(XKeyEvent *ev, char *ascii)
 117 {
 118         int key = 0;
 119         char buf[64];
 120         KeySym keysym, shifted;
 121
 122         keysym = XLookupKeysym (ev, 0);
 123         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 124         *ascii = buf[0];
 125
 126         switch(keysym)
 127         {
 128                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 129                 case XK_Page_Up:         key = K_PGUP; break;
 130
 131                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 132                 case XK_Page_Down:       key = K_PGDN; break;
 133
 134                 case XK_KP_Home: key = K_KP_HOME; break;
 135                 case XK_Home:    key = K_HOME; break;
 136
 137                 case XK_KP_End:  key = K_KP_END; break;
 138                 case XK_End:     key = K_END; break;
 139
 140                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 141                 case XK_Left:    key = K_LEFTARROW; break;
 142
 143                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 144                 case XK_Right:  key = K_RIGHTARROW;             break;
 145
 146                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 147                 case XK_Down:    key = K_DOWNARROW; break;
 148
 149                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 150                 case XK_Up:              key = K_UPARROW;        break;
 151
 152                 case XK_Escape: key = K_ESCAPE;         break;
 153
 154                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 155                 case XK_Return: key = K_ENTER;           break;
 156
 157                 case XK_Tab:            key = K_TAB;                     break;
 158
 159                 case XK_F1:              key = K_F1;                            break;
 160
 161                 case XK_F2:              key = K_F2;                            break;
 162
 163                 case XK_F3:              key = K_F3;                            break;
 164
 165                 case XK_F4:              key = K_F4;                            break;
 166
 167                 case XK_F5:              key = K_F5;                            break;
 168
 169                 case XK_F6:              key = K_F6;                            break;
 170
 171                 case XK_F7:              key = K_F7;                            break;
 172
 173                 case XK_F8:              key = K_F8;                            break;
 174
 175                 case XK_F9:              key = K_F9;                            break;
 176
 177                 case XK_F10:            key = K_F10;                     break;
 178
 179                 case XK_F11:            key = K_F11;                     break;
 180
 181                 case XK_F12:            key = K_F12;                     break;
 182
 183                 case XK_BackSpace: key = K_BACKSPACE; break;
 184
 185                 case XK_KP_Delete: key = K_KP_DEL; break;
 186                 case XK_Delete: key = K_DEL; break;
 187
 188                 case XK_Pause:  key = K_PAUSE;           break;
 189
 190                 case XK_Shift_L:
 191                 case XK_Shift_R:        key = K_SHIFT;          break;
 192
 193                 case XK_Execute:
 194                 case XK_Control_L:
 195                 case XK_Control_R:      key = K_CTRL;            break;
 196
 197                 case XK_Alt_L:
 198                 case XK_Meta_L:
 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 = '*'; 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                 default:
 213                         if (keysym < 32 && keysym > 126)
 214                                 break;
 215
 216                         if (keysym >= 'A' && keysym <= 'Z')
 217                                 key = keysym - 'A' + 'a';
 218                         else
 219                                 key = keysym;
 220
 221                         break;
 222         }
 223
 224         return key;
 225 }
 226
 227 static Cursor CreateNullCursor(Display *display, Window root)
 228 {
 229         Pixmap cursormask;
 230         XGCValues xgc;
 231         GC gc;
 232         XColor dummycolour;
 233         Cursor cursor;
 234
 235         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 236         xgc.function = GXclear;
 237         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 238         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 239         dummycolour.pixel = 0;
 240         dummycolour.red = 0;
 241         dummycolour.flags = 04;
 242         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 243         XFreePixmap(display,cursormask);
 244         XFreeGC(display,gc);
 245         return cursor;
 246 }
 247
 248 static void install_grabs(void)
 249 {
 250         XWindowAttributes attribs_1;
 251         XSetWindowAttributes attribs_2;
 252
 253         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 254         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 255         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 256
 257 // inviso cursor
 258         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 259
 260         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 261
 262 #ifndef __APPLE__
 263         if (vid_dga.integer)
 264         {
 265                 int MajorVersion, MinorVersion;
 266
 267                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 268                 {
 269                         // unable to query, probalby not supported
 270                         Con_Print( "Failed to detect XF86DGA Mouse\n" );
 271                         vid_dga.integer = 0;
 272                 }
 273                 else
 274                 {
 275                         vid_dga.integer = 1;
 276                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 277                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 278                 }
 279         }
 280         else
 281 #endif
 282                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 283
 284         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 285
 286         mouse_active = true;
 287         mouse_x = mouse_y = 0;
 288         ignoremousemove = true;
 289 }
 290
 291 static void uninstall_grabs(void)
 292 {
 293         if (!vidx11_display || !win)
 294                 return;
 295
 296 #ifndef __APPLE__
 297         if (vid_dga.integer == 1)
 298                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 299 #endif
 300
 301         XUngrabPointer(vidx11_display, CurrentTime);
 302         XUngrabKeyboard(vidx11_display, CurrentTime);
 303
 304 // inviso cursor
 305         XUndefineCursor(vidx11_display, win);
 306
 307         mouse_active = false;
 308         ignoremousemove = true;
 309 }
 310
 311 static void HandleEvents(void)
 312 {
 313         XEvent event;
 314         int key;
 315         char ascii;
 316         qboolean dowarp = false;
 317
 318         if (!vidx11_display)
 319                 return;
 320
 321         while (XPending(vidx11_display))
 322         {
 323                 XNextEvent(vidx11_display, &event);
 324
 325                 switch (event.type)
 326                 {
 327                 case KeyPress:
 328                         // key pressed
 329                         key = XLateKey (&event.xkey, &ascii);
 330                         Key_Event(key, ascii, true);
 331                         break;
 332
 333                 case KeyRelease:
 334                         // key released
 335                         key = XLateKey (&event.xkey, &ascii);
 336                         Key_Event(key, ascii, false);
 337                         break;
 338
 339                 case MotionNotify:
 340                         // mouse moved
 341                         if (usingmouse)
 342                         {
 343 #ifndef __APPLE__
 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 #endif
 351                                 {
 352
 353                                         if (!event.xmotion.send_event)
 354                                         {
 355                                                 mouse_x += event.xmotion.x - p_mouse_x;
 356                                                 mouse_y += event.xmotion.y - p_mouse_y;
 357                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 358                                                         dowarp = true;
 359                                         }
 360                                         p_mouse_x = event.xmotion.x;
 361                                         p_mouse_y = event.xmotion.y;
 362                                 }
 363                         }
 364                         //else
 365                         //      ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 366                         break;
 367
 368                 case ButtonPress:
 369                         // mouse button pressed
 370                         switch(event.xbutton.button)
 371                         {
 372                         case 1:
 373                                 Key_Event(K_MOUSE1, 0, true);
 374                                 break;
 375                         case 2:
 376                                 Key_Event(K_MOUSE3, 0, true);
 377                                 break;
 378                         case 3:
 379                                 Key_Event(K_MOUSE2, 0, true);
 380                                 break;
 381                         case 4:
 382                                 Key_Event(K_MWHEELUP, 0, true);
 383                                 break;
 384                         case 5:
 385                                 Key_Event(K_MWHEELDOWN, 0, true);
 386                                 break;
 387                         case 6:
 388                                 Key_Event(K_MOUSE4, 0, true);
 389                                 break;
 390                         case 7:
 391                                 Key_Event(K_MOUSE5, 0, true);
 392                                 break;
 393                         case 8:
 394                                 Key_Event(K_MOUSE6, 0, true);
 395                                 break;
 396                         case 9:
 397                                 Key_Event(K_MOUSE7, 0, true);
 398                                 break;
 399                         case 10:
 400                                 Key_Event(K_MOUSE8, 0, true);
 401                                 break;
 402                         case 11:
 403                                 Key_Event(K_MOUSE9, 0, true);
 404                                 break;
 405                         case 12:
 406                                 Key_Event(K_MOUSE10, 0, true);
 407                                 break;
 408                         default:
 409                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-12 expected\n", event.xbutton.button);
 410                                 break;
 411                         }
 412                         break;
 413
 414                 case ButtonRelease:
 415                         // mouse button released
 416                         switch(event.xbutton.button)
 417                         {
 418                         case 1:
 419                                 Key_Event(K_MOUSE1, 0, false);
 420                                 break;
 421                         case 2:
 422                                 Key_Event(K_MOUSE3, 0, false);
 423                                 break;
 424                         case 3:
 425                                 Key_Event(K_MOUSE2, 0, false);
 426                                 break;
 427                         case 4:
 428                                 Key_Event(K_MWHEELUP, 0, false);
 429                                 break;
 430                         case 5:
 431                                 Key_Event(K_MWHEELDOWN, 0, false);
 432                                 break;
 433                         case 6:
 434                                 Key_Event(K_MOUSE4, 0, false);
 435                                 break;
 436                         case 7:
 437                                 Key_Event(K_MOUSE5, 0, false);
 438                                 break;
 439                         case 8:
 440                                 Key_Event(K_MOUSE6, 0, false);
 441                                 break;
 442                         case 9:
 443                                 Key_Event(K_MOUSE7, 0, false);
 444                                 break;
 445                         case 10:
 446                                 Key_Event(K_MOUSE8, 0, false);
 447                                 break;
 448                         case 11:
 449                                 Key_Event(K_MOUSE9, 0, false);
 450                                 break;
 451                         case 12:
 452                                 Key_Event(K_MOUSE10, 0, false);
 453                                 break;
 454                         default:
 455                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-12 expected\n", event.xbutton.button);
 456                                 break;
 457                         }
 458                         break;
 459
 460                 case CreateNotify:
 461                         // window created
 462                         win_x = event.xcreatewindow.x;
 463                         win_y = event.xcreatewindow.y;
 464                         break;
 465
 466                 case ConfigureNotify:
 467                         // window changed size/location
 468                         win_x = event.xconfigure.x;
 469                         win_y = event.xconfigure.y;
 470                         break;
 471                 case DestroyNotify:
 472                         // window has been destroyed
 473                         Sys_Quit();
 474                         break;
 475                 case ClientMessage:
 476                         // window manager messages
 477                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 478                                 Sys_Quit();
 479                         break;
 480                 case MapNotify:
 481                         // window restored
 482                         vid_hidden = false;
 483                         vid_activewindow = false;
 484                         VID_RestoreSystemGamma();
 485                         break;
 486                 case UnmapNotify:
 487                         // window iconified/rolledup/whatever
 488                         vid_hidden = true;
 489                         vid_activewindow = false;
 490                         VID_RestoreSystemGamma();
 491                         break;
 492                 case FocusIn:
 493                         // window is now the input focus
 494                         vid_activewindow = true;
 495                         break;
 496                 case FocusOut:
 497                         // window is no longer the input focus
 498                         vid_activewindow = false;
 499                         VID_RestoreSystemGamma();
 500                         break;
 501                 case EnterNotify:
 502                         // mouse entered window
 503                         break;
 504                 case LeaveNotify:
 505                         // mouse left window
 506                         break;
 507                 }
 508         }
 509
 510         if (dowarp)
 511         {
 512                 /* move the mouse to the window center again */
 513                 p_mouse_x = scr_width / 2;
 514                 p_mouse_y = scr_height / 2;
 515                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 516         }
 517
 518         // if told to ignore one mouse move, do so
 519         if (ignoremousemove)
 520         {
 521                 ignoremousemove = false;
 522                 mouse_x = 0;
 523                 mouse_y = 0;
 524         }
 525 }
 526
 527 static void IN_DeactivateMouse( void )
 528 {
 529         if (!mouse_avail || !vidx11_display || !win)
 530                 return;
 531
 532         if (mouse_active)
 533         {
 534                 uninstall_grabs();
 535                 mouse_active = false;
 536         }
 537 }
 538
 539 static void IN_ActivateMouse( void )
 540 {
 541         if (!mouse_avail || !vidx11_display || !win)
 542                 return;
 543
 544         if (!mouse_active)
 545         {
 546                 install_grabs();
 547                 mouse_active = true;
 548         }
 549 }
 550
 551 void VID_Shutdown(void)
 552 {
 553         if (!ctx || !vidx11_display)
 554                 return;
 555
 556         vid_hidden = true;
 557         usingmouse = false;
 558         if (vidx11_display)
 559         {
 560                 VID_RestoreSystemGamma();
 561                 uninstall_grabs();
 562
 563                 // FIXME: glXDestroyContext here?
 564                 if (vidmode_active)
 565                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
 566                 if (win)
 567                         XDestroyWindow(vidx11_display, win);
 568                 XCloseDisplay(vidx11_display);
 569         }
 570         vidmode_active = false;
 571         vidx11_display = NULL;
 572         win = 0;
 573         ctx = NULL;
 574
 575         GL_CloseLibrary();
 576         Key_ClearStates ();
 577 }
 578
 579 void signal_handler(int sig)
 580 {
 581         printf("Received signal %d, exiting...\n", sig);
 582         VID_RestoreSystemGamma();
 583         Sys_Quit();
 584         exit(0);
 585 }
 586
 587 void InitSig(void)
 588 {
 589         signal(SIGHUP, signal_handler);
 590         signal(SIGINT, signal_handler);
 591         signal(SIGQUIT, signal_handler);
 592         signal(SIGILL, signal_handler);
 593         signal(SIGTRAP, signal_handler);
 594         signal(SIGIOT, signal_handler);
 595         signal(SIGBUS, signal_handler);
 596         signal(SIGFPE, signal_handler);
 597         signal(SIGSEGV, signal_handler);
 598         signal(SIGTERM, signal_handler);
 599 }
 600
 601 /*
 602 =================
 603 VID_GetWindowSize
 604 =================
 605 */
 606 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 607 {
 608         *x = *y = 0;
 609         *width = scr_width;
 610         *height = scr_height;
 611 }
 612
 613 void VID_Finish (void)
 614 {
 615         int usemouse;
 616         if (r_render.integer)
 617         {
 618                 if (r_speeds.integer || gl_finish.integer)
 619                         qglFinish();
 620                 qglXSwapBuffers(vidx11_display, win);
 621         }
 622
 623 // handle the mouse state when windowed if that's changed
 624         usemouse = false;
 625         if (vid_mouse.integer && !key_consoleactive)
 626                 usemouse = true;
 627         if (vidmode_active)
 628                 usemouse = true;
 629         if (usemouse)
 630         {
 631                 if (!usingmouse)
 632                 {
 633                         usingmouse = true;
 634                         IN_ActivateMouse ();
 635                 }
 636         }
 637         else
 638         {
 639                 if (usingmouse)
 640                 {
 641                         usingmouse = false;
 642                         IN_DeactivateMouse ();
 643                 }
 644         }
 645 }
 646
 647 int VID_SetGamma(unsigned short *ramps)
 648 {
 649         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 650 }
 651
 652 int VID_GetGamma(unsigned short *ramps)
 653 {
 654         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 655 }
 656
 657 void VID_Init(void)
 658 {
 659 #ifndef __APPLE__
 660         Cvar_RegisterVariable (&vid_dga);
 661         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 662 #endif
 663         InitSig(); // trap evil signals
 664 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 665         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 666                 mouse_avail = false;
 667 }
 668
 669 void VID_BuildGLXAttrib(int *attrib, int stencil)
 670 {
 671         *attrib++ = GLX_RGBA;
 672         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
 673         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
 674         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
 675         *attrib++ = GLX_DOUBLEBUFFER;
 676         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
 677         // if stencil is enabled, ask for alpha too
 678         if (stencil)
 679         {
 680                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 681                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
 682         }
 683         *attrib++ = None;
 684 }
 685
 686 int VID_InitMode(int fullscreen, int width, int height, int bpp)
 687 {
 688         int i;
 689         int attrib[32];
 690         XSetWindowAttributes attr;
 691         unsigned long mask;
 692         Window root;
 693         XVisualInfo *visinfo;
 694         int MajorVersion, MinorVersion;
 695         const char *drivername;
 696
 697 #if defined(__APPLE__) && defined(__MACH__)
 698         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 699 #else
 700         drivername = "libGL.so.1";
 701 #endif
 702 // 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
 703 // 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
 704 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 705         i = COM_CheckParm("-gl_driver");
 706         if (i && i < com_argc - 1)
 707                 drivername = com_argv[i + 1];
 708         if (!GL_OpenLibrary(drivername))
 709         {
 710                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 711                 return false;
 712         }
 713
 714         if (!(vidx11_display = XOpenDisplay(NULL)))
 715         {
 716                 Con_Print("Couldn't open the X display\n");
 717                 return false;
 718         }
 719
 720         vidx11_screen = DefaultScreen(vidx11_display);
 721         root = RootWindow(vidx11_display, vidx11_screen);
 722
 723         // Get video mode list
 724         MajorVersion = MinorVersion = 0;
 725         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 726                 vidmode_ext = false;
 727         else
 728         {
 729                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 730                 vidmode_ext = true;
 731         }
 732
 733         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 734          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 735          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 736          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 737          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 738         {
 739                 Con_Printf("glX functions not found in %s\n", gl_driver);
 740                 return false;
 741         }
 742
 743         VID_BuildGLXAttrib(attrib, bpp == 32);
 744         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 745         if (!visinfo)
 746         {
 747                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 748                 return false;
 749         }
 750
 751         if (vidmode_ext)
 752         {
 753                 int best_fit, best_dist, dist, x, y;
 754
 755                 // Are we going fullscreen?  If so, let's change video mode
 756                 if (fullscreen)
 757                 {
 758                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 759                         best_dist = 9999999;
 760                         best_fit = -1;
 761
 762                         for (i = 0; i < num_vidmodes; i++)
 763                         {
 764                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 765                                         continue;
 766
 767                                 x = width - vidmodes[i]->hdisplay;
 768                                 y = height - vidmodes[i]->vdisplay;
 769                                 dist = (x * x) + (y * y);
 770                                 if (dist < best_dist)
 771                                 {
 772                                         best_dist = dist;
 773                                         best_fit = i;
 774                                 }
 775                         }
 776
 777                         if (best_fit != -1)
 778                         {
 779                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 780                                 // to width/height =, so the window will take the full area of
 781                                 // the mode chosen
 782                                 width = vidmodes[best_fit]->hdisplay;
 783                                 height = vidmodes[best_fit]->vdisplay;
 784
 785                                 // change to the mode
 786                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 787                                 vidmode_active = true;
 788
 789                                 // Move the viewport to top left
 790                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 791                         }
 792                         else
 793                                 fullscreen = 0;
 794                 }
 795         }
 796
 797         // LordHavoc: save the visual for use in gamma ramp settings later
 798         vidx11_visual = visinfo->visual;
 799
 800         /* window attributes */
 801         attr.background_pixel = 0;
 802         attr.border_pixel = 0;
 803         // LordHavoc: save the colormap for later, too
 804         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 805         attr.event_mask = X_MASK;
 806         if (vidmode_active)
 807         {
 808                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 809                 attr.override_redirect = True;
 810                 attr.backing_store = NotUseful;
 811                 attr.save_under = False;
 812         }
 813         else
 814                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 815
 816         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 817         XStoreName(vidx11_display, win, gamename);
 818         XMapWindow(vidx11_display, win);
 819
 820         // LordHavoc: making the close button on a window do the right thing
 821         // seems to involve this mess, sigh...
 822         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 823         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 824
 825         if (vidmode_active)
 826         {
 827                 XMoveWindow(vidx11_display, win, 0, 0);
 828                 XRaiseWindow(vidx11_display, win);
 829                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 830                 XFlush(vidx11_display);
 831                 // Move the viewport to top left
 832                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 833         }
 834
 835         //XSync(vidx11_display, False);
 836
 837         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 838         if (!ctx)
 839                 Sys_Error ("glXCreateContext failed\n");
 840
 841         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 842                 Sys_Error ("glXMakeCurrent failed\n");
 843
 844         XSync(vidx11_display, False);
 845
 846         scr_width = width;
 847         scr_height = height;
 848
 849         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 850                 Sys_Error("glGetString not found in %s", gl_driver);
 851
 852         gl_renderer = qglGetString(GL_RENDERER);
 853         gl_vendor = qglGetString(GL_VENDOR);
 854         gl_version = qglGetString(GL_VERSION);
 855         gl_extensions = qglGetString(GL_EXTENSIONS);
 856         gl_platform = "GLX";
 857         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 858
 859         gl_videosyncavailable = false;
 860
 861 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 862 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 863 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 864         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 865 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_video_sync
 866 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_video_sync
 867 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_video_sync
 868         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_video_sync", videosyncfuncs, "-novideosync", false);
 869
 870         usingmouse = false;
 871         ignoremousemove = true;
 872         vid_hidden = false;
 873         vid_activewindow = true;
 874         GL_Init();
 875         return true;
 876 }
 877
 878 void Sys_SendKeyEvents(void)
 879 {
 880         HandleEvents();
 881 }
 882
 883 /*
 884 ===========
 885 IN_Commands
 886 ===========
 887 */
 888 void IN_Commands (void)
 889 {
 890 }
 891
 892 void IN_Move (void)
 893 {
 894         if (mouse_avail)
 895                 IN_Mouse(mouse_x, mouse_y);
 896         mouse_x = 0;
 897         mouse_y = 0;
 898 }
 899
 900 static void *prjobj = NULL;
 901
 902 int GL_OpenLibrary(const char *name)
 903 {
 904         Con_Printf("Loading OpenGL driver %s\n", name);
 905         GL_CloseLibrary();
 906         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 907         {
 908                 Con_Printf("Unable to open symbol list for %s\n", name);
 909                 return false;
 910         }
 911         strcpy(gl_driver, name);
 912         return true;
 913 }
 914
 915 void GL_CloseLibrary(void)
 916 {
 917         if (prjobj)
 918                 dlclose(prjobj);
 919         prjobj = NULL;
 920         gl_driver[0] = 0;
 921         qglXGetProcAddressARB = NULL;
 922         gl_extensions = "";
 923         gl_platform = "";
 924         gl_platformextensions = "";
 925 }
 926
 927 void *GL_GetProcAddress(const char *name)
 928 {
 929         void *p = NULL;
 930         if (qglXGetProcAddressARB != NULL)
 931                 p = (void *) qglXGetProcAddressARB(name);
 932         if (p == NULL)
 933                 p = (void *) dlsym(prjobj, name);
 934         return p;
 935 }
 936