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_swap_control
  66 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
  67
  68 static dllfunction_t swapcontrolfuncs[] =
  69 {
  70         {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
  71         {NULL, NULL}
  72 };
  73
  74 static Display *vidx11_display = NULL;
  75 static int vidx11_screen;
  76 static Window win;
  77 static GLXContext ctx = NULL;
  78
  79 Atom wm_delete_window_atom;
  80
  81 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  82 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  83                     PointerMotionMask | ButtonMotionMask)
  84 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | \
  85                 StructureNotifyMask | FocusChangeMask | EnterWindowMask | \
  86                 LeaveWindowMask)
  87
  88
  89 static qboolean mouse_avail = true;
  90 static qboolean vid_usingmouse = false;
  91 static qboolean vid_usemouse = false;
  92 static qboolean vid_usingvsync = false;
  93 static qboolean vid_usevsync = false;
  94 static float    mouse_x, mouse_y;
  95 static int p_mouse_x, p_mouse_y;
  96
  97 #ifndef __APPLE__
  98 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
  99 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
 100 #endif
 101
 102 qboolean vidmode_ext = false;
 103
 104 static int win_x, win_y;
 105
 106 static int scr_width, scr_height;
 107
 108 static XF86VidModeModeInfo **vidmodes;
 109 static int num_vidmodes;
 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_Alt_R:
 201                 case XK_Meta_R: key = K_ALT;                    break;
 202
 203                 case XK_KP_Begin: key = K_KP_5; break;
 204
 205                 case XK_Insert:key = K_INS; break;
 206                 case XK_KP_Insert: key = K_KP_INS; break;
 207
 208                 case XK_KP_Multiply: key = '*'; break;
 209                 case XK_KP_Add:  key = K_KP_PLUS; break;
 210                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 211                 case XK_KP_Divide: key = K_KP_SLASH; break;
 212
 213                 default:
 214                         if (keysym < 32 && keysym > 126)
 215                                 break;
 216
 217                         if (keysym >= 'A' && keysym <= 'Z')
 218                                 key = keysym - 'A' + 'a';
 219                         else
 220                                 key = keysym;
 221
 222                         break;
 223         }
 224
 225         return key;
 226 }
 227
 228 static Cursor CreateNullCursor(Display *display, Window root)
 229 {
 230         Pixmap cursormask;
 231         XGCValues xgc;
 232         GC gc;
 233         XColor dummycolour;
 234         Cursor cursor;
 235
 236         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 237         xgc.function = GXclear;
 238         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 239         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 240         dummycolour.pixel = 0;
 241         dummycolour.red = 0;
 242         dummycolour.flags = 04;
 243         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 244         XFreePixmap(display,cursormask);
 245         XFreeGC(display,gc);
 246         return cursor;
 247 }
 248
 249 static void IN_Activate (qboolean grab)
 250 {
 251         if (!vidx11_display)
 252                 return;
 253         if (grab)
 254         {
 255                 if (!vid_usingmouse && mouse_avail && win)
 256                 {
 257                         XWindowAttributes attribs_1;
 258                         XSetWindowAttributes attribs_2;
 259
 260                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 261                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 262                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 263
 264                 // inviso cursor
 265                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 266
 267                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 268
 269 #ifndef __APPLE__
 270                         if (vid_dga.integer)
 271                         {
 272                                 int MajorVersion, MinorVersion;
 273
 274                                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 275                                 {
 276                                         // unable to query, probably not supported
 277                                         Con_Print( "Failed to detect XF86DGA Mouse\n" );
 278                                         Cvar_SetValueQuick(&vid_dga, 0);
 279                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 280                                 }
 281                                 else
 282                                 {
 283                                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 284                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 285                                 }
 286                         }
 287                         else
 288 #endif
 289                                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 290
 291                         XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 292
 293                         mouse_x = mouse_y = 0;
 294                         cl_ignoremousemove = true;
 295                         vid_usingmouse = true;
 296                 }
 297         }
 298         else
 299         {
 300                 if (vid_usingmouse)
 301                 {
 302 #ifndef __APPLE__
 303                         if (vid_dga.integer)
 304                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 305 #endif
 306
 307                         XUngrabPointer(vidx11_display, CurrentTime);
 308                         XUngrabKeyboard(vidx11_display, CurrentTime);
 309
 310                         // inviso cursor
 311                         if (win)
 312                                 XUndefineCursor(vidx11_display, win);
 313
 314                         cl_ignoremousemove = true;
 315                         vid_usingmouse = false;
 316                 }
 317         }
 318 }
 319
 320 static void HandleEvents(void)
 321 {
 322         XEvent event;
 323         int key;
 324         char ascii;
 325         qboolean dowarp = false;
 326
 327         if (!vidx11_display)
 328                 return;
 329
 330         while (XPending(vidx11_display))
 331         {
 332                 XNextEvent(vidx11_display, &event);
 333
 334                 switch (event.type)
 335                 {
 336                 case KeyPress:
 337                         // key pressed
 338                         key = XLateKey (&event.xkey, &ascii);
 339                         Key_Event(key, ascii, true);
 340                         break;
 341
 342                 case KeyRelease:
 343                         // key released
 344                         key = XLateKey (&event.xkey, &ascii);
 345                         Key_Event(key, ascii, false);
 346                         break;
 347
 348                 case MotionNotify:
 349                         // mouse moved
 350                         if (vid_usingmouse)
 351                         {
 352 #ifndef __APPLE__
 353                                 if (vid_dga.integer == 1)
 354                                 {
 355                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 356                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 357                                 }
 358                                 else
 359 #endif
 360                                 {
 361
 362                                         if (!event.xmotion.send_event)
 363                                         {
 364                                                 mouse_x += event.xmotion.x - p_mouse_x;
 365                                                 mouse_y += event.xmotion.y - p_mouse_y;
 366                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 367                                                         dowarp = true;
 368                                         }
 369                                         p_mouse_x = event.xmotion.x;
 370                                         p_mouse_y = event.xmotion.y;
 371                                 }
 372                         }
 373                         //else
 374                         //      ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 375                         break;
 376
 377                 case ButtonPress:
 378                         // mouse button pressed
 379                         switch(event.xbutton.button)
 380                         {
 381                         case 1:
 382                                 Key_Event(K_MOUSE1, 0, true);
 383                                 break;
 384                         case 2:
 385                                 Key_Event(K_MOUSE3, 0, true);
 386                                 break;
 387                         case 3:
 388                                 Key_Event(K_MOUSE2, 0, true);
 389                                 break;
 390                         case 4:
 391                                 Key_Event(K_MWHEELUP, 0, true);
 392                                 break;
 393                         case 5:
 394                                 Key_Event(K_MWHEELDOWN, 0, true);
 395                                 break;
 396                         case 6:
 397                                 Key_Event(K_MOUSE4, 0, true);
 398                                 break;
 399                         case 7:
 400                                 Key_Event(K_MOUSE5, 0, true);
 401                                 break;
 402                         case 8:
 403                                 Key_Event(K_MOUSE6, 0, true);
 404                                 break;
 405                         case 9:
 406                                 Key_Event(K_MOUSE7, 0, true);
 407                                 break;
 408                         case 10:
 409                                 Key_Event(K_MOUSE8, 0, true);
 410                                 break;
 411                         case 11:
 412                                 Key_Event(K_MOUSE9, 0, true);
 413                                 break;
 414                         case 12:
 415                                 Key_Event(K_MOUSE10, 0, true);
 416                                 break;
 417                         default:
 418                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-12 expected\n", event.xbutton.button);
 419                                 break;
 420                         }
 421                         break;
 422
 423                 case ButtonRelease:
 424                         // mouse button released
 425                         switch(event.xbutton.button)
 426                         {
 427                         case 1:
 428                                 Key_Event(K_MOUSE1, 0, false);
 429                                 break;
 430                         case 2:
 431                                 Key_Event(K_MOUSE3, 0, false);
 432                                 break;
 433                         case 3:
 434                                 Key_Event(K_MOUSE2, 0, false);
 435                                 break;
 436                         case 4:
 437                                 Key_Event(K_MWHEELUP, 0, false);
 438                                 break;
 439                         case 5:
 440                                 Key_Event(K_MWHEELDOWN, 0, false);
 441                                 break;
 442                         case 6:
 443                                 Key_Event(K_MOUSE4, 0, false);
 444                                 break;
 445                         case 7:
 446                                 Key_Event(K_MOUSE5, 0, false);
 447                                 break;
 448                         case 8:
 449                                 Key_Event(K_MOUSE6, 0, false);
 450                                 break;
 451                         case 9:
 452                                 Key_Event(K_MOUSE7, 0, false);
 453                                 break;
 454                         case 10:
 455                                 Key_Event(K_MOUSE8, 0, false);
 456                                 break;
 457                         case 11:
 458                                 Key_Event(K_MOUSE9, 0, false);
 459                                 break;
 460                         case 12:
 461                                 Key_Event(K_MOUSE10, 0, false);
 462                                 break;
 463                         default:
 464                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-12 expected\n", event.xbutton.button);
 465                                 break;
 466                         }
 467                         break;
 468
 469                 case CreateNotify:
 470                         // window created
 471                         win_x = event.xcreatewindow.x;
 472                         win_y = event.xcreatewindow.y;
 473                         break;
 474
 475                 case ConfigureNotify:
 476                         // window changed size/location
 477                         win_x = event.xconfigure.x;
 478                         win_y = event.xconfigure.y;
 479                         break;
 480                 case DestroyNotify:
 481                         // window has been destroyed
 482                         Sys_Quit();
 483                         break;
 484                 case ClientMessage:
 485                         // window manager messages
 486                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 487                                 Sys_Quit();
 488                         break;
 489                 case MapNotify:
 490                         // window restored
 491                         vid_hidden = false;
 492                         vid_activewindow = false;
 493                         VID_RestoreSystemGamma();
 494                         break;
 495                 case UnmapNotify:
 496                         // window iconified/rolledup/whatever
 497                         vid_hidden = true;
 498                         vid_activewindow = false;
 499                         VID_RestoreSystemGamma();
 500                         break;
 501                 case FocusIn:
 502                         // window is now the input focus
 503                         vid_activewindow = true;
 504                         break;
 505                 case FocusOut:
 506                         // window is no longer the input focus
 507                         vid_activewindow = false;
 508                         VID_RestoreSystemGamma();
 509                         break;
 510                 case EnterNotify:
 511                         // mouse entered window
 512                         break;
 513                 case LeaveNotify:
 514                         // mouse left window
 515                         break;
 516                 }
 517         }
 518
 519         if (dowarp)
 520         {
 521                 /* move the mouse to the window center again */
 522                 p_mouse_x = scr_width / 2;
 523                 p_mouse_y = scr_height / 2;
 524                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 525         }
 526 }
 527
 528 static void *prjobj = NULL;
 529
 530 static void GL_CloseLibrary(void)
 531 {
 532         if (prjobj)
 533                 dlclose(prjobj);
 534         prjobj = NULL;
 535         gl_driver[0] = 0;
 536         qglXGetProcAddressARB = NULL;
 537         gl_extensions = "";
 538         gl_platform = "";
 539         gl_platformextensions = "";
 540 }
 541
 542 static int GL_OpenLibrary(const char *name)
 543 {
 544         Con_Printf("Loading OpenGL driver %s\n", name);
 545         GL_CloseLibrary();
 546         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 547         {
 548                 Con_Printf("Unable to open symbol list for %s\n", name);
 549                 return false;
 550         }
 551         strcpy(gl_driver, name);
 552         return true;
 553 }
 554
 555 void *GL_GetProcAddress(const char *name)
 556 {
 557         void *p = NULL;
 558         if (qglXGetProcAddressARB != NULL)
 559                 p = (void *) qglXGetProcAddressARB(name);
 560         if (p == NULL)
 561                 p = (void *) dlsym(prjobj, name);
 562         return p;
 563 }
 564
 565 void VID_Shutdown(void)
 566 {
 567         if (!ctx || !vidx11_display)
 568                 return;
 569
 570         if (vidx11_display)
 571         {
 572                 IN_Activate(false);
 573                 VID_RestoreSystemGamma();
 574
 575                 // FIXME: glXDestroyContext here?
 576                 if (vid_isfullscreen)
 577                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
 578                 if (win)
 579                         XDestroyWindow(vidx11_display, win);
 580                 XCloseDisplay(vidx11_display);
 581         }
 582         vid_hidden = true;
 583         vid_isfullscreen = false;
 584         vidx11_display = NULL;
 585         win = 0;
 586         ctx = NULL;
 587
 588         GL_CloseLibrary();
 589         Key_ClearStates ();
 590 }
 591
 592 void signal_handler(int sig)
 593 {
 594         Con_Printf("Received signal %d, exiting...\n", sig);
 595         VID_RestoreSystemGamma();
 596         Sys_Quit();
 597         exit(0);
 598 }
 599
 600 void InitSig(void)
 601 {
 602         signal(SIGHUP, signal_handler);
 603         signal(SIGINT, signal_handler);
 604         signal(SIGQUIT, signal_handler);
 605         signal(SIGILL, signal_handler);
 606         signal(SIGTRAP, signal_handler);
 607         signal(SIGIOT, signal_handler);
 608         signal(SIGBUS, signal_handler);
 609         signal(SIGFPE, signal_handler);
 610         signal(SIGSEGV, signal_handler);
 611         signal(SIGTERM, signal_handler);
 612 }
 613
 614 /*
 615 =================
 616 VID_GetWindowSize
 617 =================
 618 */
 619 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 620 {
 621         *x = *y = 0;
 622         *width = scr_width;
 623         *height = scr_height;
 624 }
 625
 626 void VID_Finish (void)
 627 {
 628         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 629         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 630         {
 631                 vid_usingvsync = vid_usevsync;
 632                 if (qglXSwapIntervalSGI (vid_usevsync))
 633                         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");
 634         }
 635
 636 // handle the mouse state when windowed if that's changed
 637         vid_usemouse = false;
 638         if (vid_mouse.integer && !key_consoleactive && !cls.demoplayback)
 639                 vid_usemouse = true;
 640         if (!vid_activewindow)
 641                 vid_usemouse = false;
 642         if (vid_isfullscreen)
 643                 vid_usemouse = true;
 644         IN_Activate(vid_usemouse);
 645
 646         if (r_render.integer)
 647         {
 648                 if (r_speeds.integer || gl_finish.integer)
 649                         qglFinish();
 650                 qglXSwapBuffers(vidx11_display, win);
 651         }
 652 }
 653
 654 int VID_SetGamma(unsigned short *ramps)
 655 {
 656         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 657 }
 658
 659 int VID_GetGamma(unsigned short *ramps)
 660 {
 661         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 662 }
 663
 664 void VID_Init(void)
 665 {
 666 #ifndef __APPLE__
 667         Cvar_RegisterVariable (&vid_dga);
 668         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 669 #endif
 670         InitSig(); // trap evil signals
 671 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 672         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 673                 mouse_avail = false;
 674 }
 675
 676 void VID_BuildGLXAttrib(int *attrib, int stencil)
 677 {
 678         *attrib++ = GLX_RGBA;
 679         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
 680         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
 681         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
 682         *attrib++ = GLX_DOUBLEBUFFER;
 683         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
 684         // if stencil is enabled, ask for alpha too
 685         if (stencil)
 686         {
 687                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 688                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
 689         }
 690         *attrib++ = None;
 691 }
 692
 693 int VID_InitMode(int fullscreen, int width, int height, int bpp)
 694 {
 695         int i;
 696         int attrib[32];
 697         XSetWindowAttributes attr;
 698         unsigned long mask;
 699         Window root;
 700         XVisualInfo *visinfo;
 701         int MajorVersion, MinorVersion;
 702         const char *drivername;
 703
 704 #if defined(__APPLE__) && defined(__MACH__)
 705         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 706 #else
 707         drivername = "libGL.so.1";
 708 #endif
 709 // 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
 710 // 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
 711 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 712         i = COM_CheckParm("-gl_driver");
 713         if (i && i < com_argc - 1)
 714                 drivername = com_argv[i + 1];
 715         if (!GL_OpenLibrary(drivername))
 716         {
 717                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 718                 return false;
 719         }
 720
 721         if (!(vidx11_display = XOpenDisplay(NULL)))
 722         {
 723                 Con_Print("Couldn't open the X display\n");
 724                 return false;
 725         }
 726
 727         vidx11_screen = DefaultScreen(vidx11_display);
 728         root = RootWindow(vidx11_display, vidx11_screen);
 729
 730         // Get video mode list
 731         MajorVersion = MinorVersion = 0;
 732         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 733                 vidmode_ext = false;
 734         else
 735         {
 736                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 737                 vidmode_ext = true;
 738         }
 739
 740         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 741          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 742          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 743          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 744          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 745         {
 746                 Con_Printf("glX functions not found in %s\n", gl_driver);
 747                 return false;
 748         }
 749
 750         VID_BuildGLXAttrib(attrib, bpp == 32);
 751         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 752         if (!visinfo)
 753         {
 754                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 755                 return false;
 756         }
 757
 758         if (vidmode_ext)
 759         {
 760                 int best_fit, best_dist, dist, x, y;
 761
 762                 // Are we going fullscreen?  If so, let's change video mode
 763                 if (fullscreen)
 764                 {
 765                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 766                         best_dist = 9999999;
 767                         best_fit = -1;
 768
 769                         for (i = 0; i < num_vidmodes; i++)
 770                         {
 771                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 772                                         continue;
 773
 774                                 x = width - vidmodes[i]->hdisplay;
 775                                 y = height - vidmodes[i]->vdisplay;
 776                                 dist = (x * x) + (y * y);
 777                                 if (dist < best_dist)
 778                                 {
 779                                         best_dist = dist;
 780                                         best_fit = i;
 781                                 }
 782                         }
 783
 784                         if (best_fit != -1)
 785                         {
 786                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 787                                 // to width/height =, so the window will take the full area of
 788                                 // the mode chosen
 789                                 width = vidmodes[best_fit]->hdisplay;
 790                                 height = vidmodes[best_fit]->vdisplay;
 791
 792                                 // change to the mode
 793                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 794                                 vid_isfullscreen = true;
 795
 796                                 // Move the viewport to top left
 797                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 798                         }
 799                         else
 800                                 fullscreen = 0;
 801                 }
 802         }
 803
 804         // LordHavoc: save the visual for use in gamma ramp settings later
 805         vidx11_visual = visinfo->visual;
 806
 807         /* window attributes */
 808         attr.background_pixel = 0;
 809         attr.border_pixel = 0;
 810         // LordHavoc: save the colormap for later, too
 811         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 812         attr.event_mask = X_MASK;
 813         if (vid_isfullscreen)
 814         {
 815                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 816                 attr.override_redirect = True;
 817                 attr.backing_store = NotUseful;
 818                 attr.save_under = False;
 819         }
 820         else
 821                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 822
 823         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 824         XStoreName(vidx11_display, win, gamename);
 825         XMapWindow(vidx11_display, win);
 826
 827         // LordHavoc: making the close button on a window do the right thing
 828         // seems to involve this mess, sigh...
 829         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 830         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 831
 832         if (vid_isfullscreen)
 833         {
 834                 XMoveWindow(vidx11_display, win, 0, 0);
 835                 XRaiseWindow(vidx11_display, win);
 836                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 837                 XFlush(vidx11_display);
 838                 // Move the viewport to top left
 839                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 840         }
 841
 842         //XSync(vidx11_display, False);
 843
 844         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 845         if (!ctx)
 846                 Sys_Error ("glXCreateContext failed\n");
 847
 848         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 849                 Sys_Error ("glXMakeCurrent failed\n");
 850
 851         XSync(vidx11_display, False);
 852
 853         scr_width = width;
 854         scr_height = height;
 855
 856         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 857                 Sys_Error("glGetString not found in %s", gl_driver);
 858
 859         gl_renderer = qglGetString(GL_RENDERER);
 860         gl_vendor = qglGetString(GL_VENDOR);
 861         gl_version = qglGetString(GL_VERSION);
 862         gl_extensions = qglGetString(GL_EXTENSIONS);
 863         gl_platform = "GLX";
 864         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 865
 866         gl_videosyncavailable = false;
 867
 868 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 869 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 870 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 871         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 872 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 873 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 874 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 875         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 876
 877         vid_usingmouse = false;
 878         vid_usingvsync = false;
 879         vid_hidden = false;
 880         vid_activewindow = true;
 881         GL_Init();
 882         return true;
 883 }
 884
 885 void Sys_SendKeyEvents(void)
 886 {
 887         HandleEvents();
 888 }
 889
 890 void IN_Move (void)
 891 {
 892         if (mouse_avail)
 893         {
 894                 in_mouse_x = mouse_x;
 895                 in_mouse_y = mouse_y;
 896         }
 897         mouse_x = 0;
 898         mouse_y = 0;
 899 }