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 qboolean ignoremousemove = false;
  95 static float    mouse_x, mouse_y;
  96 static int p_mouse_x, p_mouse_y;
  97
  98 #ifndef __APPLE__
  99 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
 100 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
 101 #endif
 102
 103 qboolean vidmode_ext = false;
 104
 105 static int win_x, win_y;
 106
 107 static int scr_width, scr_height;
 108
 109 static XF86VidModeModeInfo **vidmodes;
 110 static int num_vidmodes;
 111 static qboolean vid_isfullscreen = false;
 112
 113 static Visual *vidx11_visual;
 114 static Colormap vidx11_colormap;
 115
 116 /*-----------------------------------------------------------------------*/
 117
 118 static int XLateKey(XKeyEvent *ev, char *ascii)
 119 {
 120         int key = 0;
 121         char buf[64];
 122         KeySym keysym, shifted;
 123
 124         keysym = XLookupKeysym (ev, 0);
 125         XLookupString(ev, buf, sizeof buf, &shifted, 0);
 126         *ascii = buf[0];
 127
 128         switch(keysym)
 129         {
 130                 case XK_KP_Page_Up:      key = K_KP_PGUP; break;
 131                 case XK_Page_Up:         key = K_PGUP; break;
 132
 133                 case XK_KP_Page_Down: key = K_KP_PGDN; break;
 134                 case XK_Page_Down:       key = K_PGDN; break;
 135
 136                 case XK_KP_Home: key = K_KP_HOME; break;
 137                 case XK_Home:    key = K_HOME; break;
 138
 139                 case XK_KP_End:  key = K_KP_END; break;
 140                 case XK_End:     key = K_END; break;
 141
 142                 case XK_KP_Left: key = K_KP_LEFTARROW; break;
 143                 case XK_Left:    key = K_LEFTARROW; break;
 144
 145                 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
 146                 case XK_Right:  key = K_RIGHTARROW;             break;
 147
 148                 case XK_KP_Down: key = K_KP_DOWNARROW; break;
 149                 case XK_Down:    key = K_DOWNARROW; break;
 150
 151                 case XK_KP_Up:   key = K_KP_UPARROW; break;
 152                 case XK_Up:              key = K_UPARROW;        break;
 153
 154                 case XK_Escape: key = K_ESCAPE;         break;
 155
 156                 case XK_KP_Enter: key = K_KP_ENTER;     break;
 157                 case XK_Return: key = K_ENTER;           break;
 158
 159                 case XK_Tab:            key = K_TAB;                     break;
 160
 161                 case XK_F1:              key = K_F1;                            break;
 162
 163                 case XK_F2:              key = K_F2;                            break;
 164
 165                 case XK_F3:              key = K_F3;                            break;
 166
 167                 case XK_F4:              key = K_F4;                            break;
 168
 169                 case XK_F5:              key = K_F5;                            break;
 170
 171                 case XK_F6:              key = K_F6;                            break;
 172
 173                 case XK_F7:              key = K_F7;                            break;
 174
 175                 case XK_F8:              key = K_F8;                            break;
 176
 177                 case XK_F9:              key = K_F9;                            break;
 178
 179                 case XK_F10:            key = K_F10;                     break;
 180
 181                 case XK_F11:            key = K_F11;                     break;
 182
 183                 case XK_F12:            key = K_F12;                     break;
 184
 185                 case XK_BackSpace: key = K_BACKSPACE; break;
 186
 187                 case XK_KP_Delete: key = K_KP_DEL; break;
 188                 case XK_Delete: key = K_DEL; break;
 189
 190                 case XK_Pause:  key = K_PAUSE;           break;
 191
 192                 case XK_Shift_L:
 193                 case XK_Shift_R:        key = K_SHIFT;          break;
 194
 195                 case XK_Execute:
 196                 case XK_Control_L:
 197                 case XK_Control_R:      key = K_CTRL;            break;
 198
 199                 case XK_Alt_L:
 200                 case XK_Meta_L:
 201                 case XK_Alt_R:
 202                 case XK_Meta_R: key = K_ALT;                    break;
 203
 204                 case XK_KP_Begin: key = K_KP_5; break;
 205
 206                 case XK_Insert:key = K_INS; break;
 207                 case XK_KP_Insert: key = K_KP_INS; break;
 208
 209                 case XK_KP_Multiply: key = '*'; break;
 210                 case XK_KP_Add:  key = K_KP_PLUS; break;
 211                 case XK_KP_Subtract: key = K_KP_MINUS; break;
 212                 case XK_KP_Divide: key = K_KP_SLASH; break;
 213
 214                 default:
 215                         if (keysym < 32 && keysym > 126)
 216                                 break;
 217
 218                         if (keysym >= 'A' && keysym <= 'Z')
 219                                 key = keysym - 'A' + 'a';
 220                         else
 221                                 key = keysym;
 222
 223                         break;
 224         }
 225
 226         return key;
 227 }
 228
 229 static Cursor CreateNullCursor(Display *display, Window root)
 230 {
 231         Pixmap cursormask;
 232         XGCValues xgc;
 233         GC gc;
 234         XColor dummycolour;
 235         Cursor cursor;
 236
 237         cursormask = XCreatePixmap(display, root, 1, 1, 1);
 238         xgc.function = GXclear;
 239         gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 240         XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 241         dummycolour.pixel = 0;
 242         dummycolour.red = 0;
 243         dummycolour.flags = 04;
 244         cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
 245         XFreePixmap(display,cursormask);
 246         XFreeGC(display,gc);
 247         return cursor;
 248 }
 249
 250 static void IN_Activate (qboolean grab)
 251 {
 252         if (!mouse_avail || !vidx11_display || !win)
 253                 return;
 254
 255         if (grab)
 256         {
 257                 if (!vid_usingmouse)
 258                 {
 259                         XWindowAttributes attribs_1;
 260                         XSetWindowAttributes attribs_2;
 261
 262                         XGetWindowAttributes(vidx11_display, win, &attribs_1);
 263                         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 264                         XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
 265
 266                 // inviso cursor
 267                         XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
 268
 269                         XGrabPointer(vidx11_display, win,  True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
 270
 271 #ifndef __APPLE__
 272                         if (vid_dga.integer)
 273                         {
 274                                 int MajorVersion, MinorVersion;
 275
 276                                 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 277                                 {
 278                                         // unable to query, probably not supported
 279                                         Con_Print( "Failed to detect XF86DGA Mouse\n" );
 280                                         Cvar_SetValueQuick(&vid_dga, 0);
 281                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, scr_width / 2, scr_height / 2);
 282                                 }
 283                                 else
 284                                 {
 285                                         XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
 286                                         XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 287                                 }
 288                         }
 289                         else
 290 #endif
 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_x = mouse_y = 0;
 296                         ignoremousemove = true;
 297                         vid_usingmouse = true;
 298                 }
 299         }
 300         else
 301         {
 302                 if (vid_usingmouse)
 303                 {
 304 #ifndef __APPLE__
 305                         if (vid_dga.integer == 1)
 306                                 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
 307 #endif
 308
 309                         XUngrabPointer(vidx11_display, CurrentTime);
 310                         XUngrabKeyboard(vidx11_display, CurrentTime);
 311
 312                 // inviso cursor
 313                         XUndefineCursor(vidx11_display, win);
 314
 315                         ignoremousemove = true;
 316                         vid_usingmouse = false;
 317                 }
 318         }
 319 }
 320
 321 static void HandleEvents(void)
 322 {
 323         XEvent event;
 324         int key;
 325         char ascii;
 326         qboolean dowarp = false;
 327
 328         if (!vidx11_display)
 329                 return;
 330
 331         while (XPending(vidx11_display))
 332         {
 333                 XNextEvent(vidx11_display, &event);
 334
 335                 switch (event.type)
 336                 {
 337                 case KeyPress:
 338                         // key pressed
 339                         key = XLateKey (&event.xkey, &ascii);
 340                         Key_Event(key, ascii, true);
 341                         break;
 342
 343                 case KeyRelease:
 344                         // key released
 345                         key = XLateKey (&event.xkey, &ascii);
 346                         Key_Event(key, ascii, false);
 347                         break;
 348
 349                 case MotionNotify:
 350                         // mouse moved
 351                         if (vid_usingmouse)
 352                         {
 353 #ifndef __APPLE__
 354                                 if (vid_dga.integer == 1)
 355                                 {
 356                                         mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
 357                                         mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
 358                                 }
 359                                 else
 360 #endif
 361                                 {
 362
 363                                         if (!event.xmotion.send_event)
 364                                         {
 365                                                 mouse_x += event.xmotion.x - p_mouse_x;
 366                                                 mouse_y += event.xmotion.y - p_mouse_y;
 367                                                 if (abs(scr_width/2 - event.xmotion.x) > scr_width / 4 || abs(scr_height/2 - event.xmotion.y) > scr_height / 4)
 368                                                         dowarp = true;
 369                                         }
 370                                         p_mouse_x = event.xmotion.x;
 371                                         p_mouse_y = event.xmotion.y;
 372                                 }
 373                         }
 374                         //else
 375                         //      ui_mouseupdate(event.xmotion.x, event.xmotion.y);
 376                         break;
 377
 378                 case ButtonPress:
 379                         // mouse button pressed
 380                         switch(event.xbutton.button)
 381                         {
 382                         case 1:
 383                                 Key_Event(K_MOUSE1, 0, true);
 384                                 break;
 385                         case 2:
 386                                 Key_Event(K_MOUSE3, 0, true);
 387                                 break;
 388                         case 3:
 389                                 Key_Event(K_MOUSE2, 0, true);
 390                                 break;
 391                         case 4:
 392                                 Key_Event(K_MWHEELUP, 0, true);
 393                                 break;
 394                         case 5:
 395                                 Key_Event(K_MWHEELDOWN, 0, true);
 396                                 break;
 397                         case 6:
 398                                 Key_Event(K_MOUSE4, 0, true);
 399                                 break;
 400                         case 7:
 401                                 Key_Event(K_MOUSE5, 0, true);
 402                                 break;
 403                         case 8:
 404                                 Key_Event(K_MOUSE6, 0, true);
 405                                 break;
 406                         case 9:
 407                                 Key_Event(K_MOUSE7, 0, true);
 408                                 break;
 409                         case 10:
 410                                 Key_Event(K_MOUSE8, 0, true);
 411                                 break;
 412                         case 11:
 413                                 Key_Event(K_MOUSE9, 0, true);
 414                                 break;
 415                         case 12:
 416                                 Key_Event(K_MOUSE10, 0, true);
 417                                 break;
 418                         default:
 419                                 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-12 expected\n", event.xbutton.button);
 420                                 break;
 421                         }
 422                         break;
 423
 424                 case ButtonRelease:
 425                         // mouse button released
 426                         switch(event.xbutton.button)
 427                         {
 428                         case 1:
 429                                 Key_Event(K_MOUSE1, 0, false);
 430                                 break;
 431                         case 2:
 432                                 Key_Event(K_MOUSE3, 0, false);
 433                                 break;
 434                         case 3:
 435                                 Key_Event(K_MOUSE2, 0, false);
 436                                 break;
 437                         case 4:
 438                                 Key_Event(K_MWHEELUP, 0, false);
 439                                 break;
 440                         case 5:
 441                                 Key_Event(K_MWHEELDOWN, 0, false);
 442                                 break;
 443                         case 6:
 444                                 Key_Event(K_MOUSE4, 0, false);
 445                                 break;
 446                         case 7:
 447                                 Key_Event(K_MOUSE5, 0, false);
 448                                 break;
 449                         case 8:
 450                                 Key_Event(K_MOUSE6, 0, false);
 451                                 break;
 452                         case 9:
 453                                 Key_Event(K_MOUSE7, 0, false);
 454                                 break;
 455                         case 10:
 456                                 Key_Event(K_MOUSE8, 0, false);
 457                                 break;
 458                         case 11:
 459                                 Key_Event(K_MOUSE9, 0, false);
 460                                 break;
 461                         case 12:
 462                                 Key_Event(K_MOUSE10, 0, false);
 463                                 break;
 464                         default:
 465                                 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-12 expected\n", event.xbutton.button);
 466                                 break;
 467                         }
 468                         break;
 469
 470                 case CreateNotify:
 471                         // window created
 472                         win_x = event.xcreatewindow.x;
 473                         win_y = event.xcreatewindow.y;
 474                         break;
 475
 476                 case ConfigureNotify:
 477                         // window changed size/location
 478                         win_x = event.xconfigure.x;
 479                         win_y = event.xconfigure.y;
 480                         break;
 481                 case DestroyNotify:
 482                         // window has been destroyed
 483                         Sys_Quit();
 484                         break;
 485                 case ClientMessage:
 486                         // window manager messages
 487                         if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
 488                                 Sys_Quit();
 489                         break;
 490                 case MapNotify:
 491                         // window restored
 492                         vid_hidden = false;
 493                         vid_activewindow = false;
 494                         VID_RestoreSystemGamma();
 495                         break;
 496                 case UnmapNotify:
 497                         // window iconified/rolledup/whatever
 498                         vid_hidden = true;
 499                         vid_activewindow = false;
 500                         VID_RestoreSystemGamma();
 501                         break;
 502                 case FocusIn:
 503                         // window is now the input focus
 504                         vid_activewindow = true;
 505                         break;
 506                 case FocusOut:
 507                         // window is no longer the input focus
 508                         vid_activewindow = false;
 509                         VID_RestoreSystemGamma();
 510                         break;
 511                 case EnterNotify:
 512                         // mouse entered window
 513                         break;
 514                 case LeaveNotify:
 515                         // mouse left window
 516                         break;
 517                 }
 518         }
 519
 520         if (dowarp)
 521         {
 522                 /* move the mouse to the window center again */
 523                 p_mouse_x = scr_width / 2;
 524                 p_mouse_y = scr_height / 2;
 525                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 526         }
 527
 528         // if told to ignore one mouse move, do so
 529         if (ignoremousemove)
 530         {
 531                 ignoremousemove = false;
 532                 mouse_x = 0;
 533                 mouse_y = 0;
 534         }
 535 }
 536
 537 static void *prjobj = NULL;
 538
 539 static void GL_CloseLibrary(void)
 540 {
 541         if (prjobj)
 542                 dlclose(prjobj);
 543         prjobj = NULL;
 544         gl_driver[0] = 0;
 545         qglXGetProcAddressARB = NULL;
 546         gl_extensions = "";
 547         gl_platform = "";
 548         gl_platformextensions = "";
 549 }
 550
 551 static int GL_OpenLibrary(const char *name)
 552 {
 553         Con_Printf("Loading OpenGL driver %s\n", name);
 554         GL_CloseLibrary();
 555         if (!(prjobj = dlopen(name, RTLD_LAZY)))
 556         {
 557                 Con_Printf("Unable to open symbol list for %s\n", name);
 558                 return false;
 559         }
 560         strcpy(gl_driver, name);
 561         return true;
 562 }
 563
 564 void *GL_GetProcAddress(const char *name)
 565 {
 566         void *p = NULL;
 567         if (qglXGetProcAddressARB != NULL)
 568                 p = (void *) qglXGetProcAddressARB(name);
 569         if (p == NULL)
 570                 p = (void *) dlsym(prjobj, name);
 571         return p;
 572 }
 573
 574 void VID_Shutdown(void)
 575 {
 576         if (!ctx || !vidx11_display)
 577                 return;
 578
 579         vid_hidden = true;
 580         vid_usingmouse = false;
 581         if (vidx11_display)
 582         {
 583                 VID_RestoreSystemGamma();
 584                 IN_Activate(false);
 585
 586                 // FIXME: glXDestroyContext here?
 587                 if (vid_isfullscreen)
 588                         XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
 589                 if (win)
 590                         XDestroyWindow(vidx11_display, win);
 591                 XCloseDisplay(vidx11_display);
 592         }
 593         vid_isfullscreen = false;
 594         vidx11_display = NULL;
 595         win = 0;
 596         ctx = NULL;
 597
 598         GL_CloseLibrary();
 599         Key_ClearStates ();
 600 }
 601
 602 void signal_handler(int sig)
 603 {
 604         Con_Printf("Received signal %d, exiting...\n", sig);
 605         VID_RestoreSystemGamma();
 606         Sys_Quit();
 607         exit(0);
 608 }
 609
 610 void InitSig(void)
 611 {
 612         signal(SIGHUP, signal_handler);
 613         signal(SIGINT, signal_handler);
 614         signal(SIGQUIT, signal_handler);
 615         signal(SIGILL, signal_handler);
 616         signal(SIGTRAP, signal_handler);
 617         signal(SIGIOT, signal_handler);
 618         signal(SIGBUS, signal_handler);
 619         signal(SIGFPE, signal_handler);
 620         signal(SIGSEGV, signal_handler);
 621         signal(SIGTERM, signal_handler);
 622 }
 623
 624 /*
 625 =================
 626 VID_GetWindowSize
 627 =================
 628 */
 629 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 630 {
 631         *x = *y = 0;
 632         *width = scr_width;
 633         *height = scr_height;
 634 }
 635
 636 void VID_Finish (void)
 637 {
 638         vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
 639         if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
 640         {
 641                 vid_usingvsync = vid_usevsync;
 642                 if (qglXSwapIntervalSGI (vid_usevsync))
 643                         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");
 644         }
 645
 646 // handle the mouse state when windowed if that's changed
 647         vid_usemouse = false;
 648         if (vid_mouse.integer && !key_consoleactive && !cls.demoplayback)
 649                 vid_usemouse = true;
 650         if (!vid_activewindow)
 651                 vid_usemouse = false;
 652         if (vid_isfullscreen)
 653                 vid_usemouse = true;
 654         IN_Activate(vid_usemouse);
 655
 656         if (r_render.integer)
 657         {
 658                 if (r_speeds.integer || gl_finish.integer)
 659                         qglFinish();
 660                 qglXSwapBuffers(vidx11_display, win);
 661         }
 662 }
 663
 664 int VID_SetGamma(unsigned short *ramps)
 665 {
 666         return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 667 }
 668
 669 int VID_GetGamma(unsigned short *ramps)
 670 {
 671         return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
 672 }
 673
 674 void VID_Init(void)
 675 {
 676 #ifndef __APPLE__
 677         Cvar_RegisterVariable (&vid_dga);
 678         Cvar_RegisterVariable (&vid_dga_mouseaccel);
 679 #endif
 680         InitSig(); // trap evil signals
 681 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
 682         if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
 683                 mouse_avail = false;
 684 }
 685
 686 void VID_BuildGLXAttrib(int *attrib, int stencil)
 687 {
 688         *attrib++ = GLX_RGBA;
 689         *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
 690         *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
 691         *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
 692         *attrib++ = GLX_DOUBLEBUFFER;
 693         *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
 694         // if stencil is enabled, ask for alpha too
 695         if (stencil)
 696         {
 697                 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
 698                 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
 699         }
 700         *attrib++ = None;
 701 }
 702
 703 int VID_InitMode(int fullscreen, int width, int height, int bpp)
 704 {
 705         int i;
 706         int attrib[32];
 707         XSetWindowAttributes attr;
 708         unsigned long mask;
 709         Window root;
 710         XVisualInfo *visinfo;
 711         int MajorVersion, MinorVersion;
 712         const char *drivername;
 713
 714 #if defined(__APPLE__) && defined(__MACH__)
 715         drivername = "/usr/X11R6/lib/libGL.1.dylib";
 716 #else
 717         drivername = "libGL.so.1";
 718 #endif
 719 // 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
 720 // 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
 721 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
 722         i = COM_CheckParm("-gl_driver");
 723         if (i && i < com_argc - 1)
 724                 drivername = com_argv[i + 1];
 725         if (!GL_OpenLibrary(drivername))
 726         {
 727                 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
 728                 return false;
 729         }
 730
 731         if (!(vidx11_display = XOpenDisplay(NULL)))
 732         {
 733                 Con_Print("Couldn't open the X display\n");
 734                 return false;
 735         }
 736
 737         vidx11_screen = DefaultScreen(vidx11_display);
 738         root = RootWindow(vidx11_display, vidx11_screen);
 739
 740         // Get video mode list
 741         MajorVersion = MinorVersion = 0;
 742         if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
 743                 vidmode_ext = false;
 744         else
 745         {
 746                 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 747                 vidmode_ext = true;
 748         }
 749
 750         if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
 751          || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
 752          || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
 753          || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
 754          || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
 755         {
 756                 Con_Printf("glX functions not found in %s\n", gl_driver);
 757                 return false;
 758         }
 759
 760         VID_BuildGLXAttrib(attrib, bpp == 32);
 761         visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
 762         if (!visinfo)
 763         {
 764                 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
 765                 return false;
 766         }
 767
 768         if (vidmode_ext)
 769         {
 770                 int best_fit, best_dist, dist, x, y;
 771
 772                 // Are we going fullscreen?  If so, let's change video mode
 773                 if (fullscreen)
 774                 {
 775                         XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
 776                         best_dist = 9999999;
 777                         best_fit = -1;
 778
 779                         for (i = 0; i < num_vidmodes; i++)
 780                         {
 781                                 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
 782                                         continue;
 783
 784                                 x = width - vidmodes[i]->hdisplay;
 785                                 y = height - vidmodes[i]->vdisplay;
 786                                 dist = (x * x) + (y * y);
 787                                 if (dist < best_dist)
 788                                 {
 789                                         best_dist = dist;
 790                                         best_fit = i;
 791                                 }
 792                         }
 793
 794                         if (best_fit != -1)
 795                         {
 796                                 // LordHavoc: changed from ActualWidth/ActualHeight =,
 797                                 // to width/height =, so the window will take the full area of
 798                                 // the mode chosen
 799                                 width = vidmodes[best_fit]->hdisplay;
 800                                 height = vidmodes[best_fit]->vdisplay;
 801
 802                                 // change to the mode
 803                                 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
 804                                 vid_isfullscreen = true;
 805
 806                                 // Move the viewport to top left
 807                                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 808                         }
 809                         else
 810                                 fullscreen = 0;
 811                 }
 812         }
 813
 814         // LordHavoc: save the visual for use in gamma ramp settings later
 815         vidx11_visual = visinfo->visual;
 816
 817         /* window attributes */
 818         attr.background_pixel = 0;
 819         attr.border_pixel = 0;
 820         // LordHavoc: save the colormap for later, too
 821         vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
 822         attr.event_mask = X_MASK;
 823         if (vid_isfullscreen)
 824         {
 825                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
 826                 attr.override_redirect = True;
 827                 attr.backing_store = NotUseful;
 828                 attr.save_under = False;
 829         }
 830         else
 831                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 832
 833         win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
 834         XStoreName(vidx11_display, win, gamename);
 835         XMapWindow(vidx11_display, win);
 836
 837         // LordHavoc: making the close button on a window do the right thing
 838         // seems to involve this mess, sigh...
 839         wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
 840         XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
 841
 842         if (vid_isfullscreen)
 843         {
 844                 XMoveWindow(vidx11_display, win, 0, 0);
 845                 XRaiseWindow(vidx11_display, win);
 846                 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
 847                 XFlush(vidx11_display);
 848                 // Move the viewport to top left
 849                 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
 850         }
 851
 852         //XSync(vidx11_display, False);
 853
 854         ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
 855         if (!ctx)
 856                 Sys_Error ("glXCreateContext failed\n");
 857
 858         if (!qglXMakeCurrent(vidx11_display, win, ctx))
 859                 Sys_Error ("glXMakeCurrent failed\n");
 860
 861         XSync(vidx11_display, False);
 862
 863         scr_width = width;
 864         scr_height = height;
 865
 866         if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
 867                 Sys_Error("glGetString not found in %s", gl_driver);
 868
 869         gl_renderer = qglGetString(GL_RENDERER);
 870         gl_vendor = qglGetString(GL_VENDOR);
 871         gl_version = qglGetString(GL_VERSION);
 872         gl_extensions = qglGetString(GL_EXTENSIONS);
 873         gl_platform = "GLX";
 874         gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
 875
 876         gl_videosyncavailable = false;
 877
 878 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 879 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 880 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
 881         GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
 882 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
 883 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
 884 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
 885         gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
 886
 887         vid_usingmouse = false;
 888         vid_usingvsync = false;
 889         ignoremousemove = true;
 890         vid_hidden = false;
 891         vid_activewindow = true;
 892         GL_Init();
 893         return true;
 894 }
 895
 896 void Sys_SendKeyEvents(void)
 897 {
 898         HandleEvents();
 899 }
 900
 901 void IN_Move (void)
 902 {
 903         if (mouse_avail)
 904         {
 905                 in_mouse_x = mouse_x;
 906                 in_mouse_y = mouse_y;
 907         }
 908         mouse_x = 0;
 909         mouse_y = 0;
 910 }