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 "quakedef.h"
  31
  32 #include <GL/glx.h>
  33
  34 #include <X11/keysym.h>
  35 #include <X11/cursorfont.h>
  36
  37 #include <X11/extensions/XShm.h>
  38 #include <X11/extensions/xf86dga.h>
  39 #include <X11/extensions/xf86vmode.h>
  40
  41 static Display *dpy = NULL;
  42 static int scrnum;
  43 static Window win;
  44 static GLXContext ctx = NULL;
  45
  46 #define KEY_MASK (KeyPressMask | KeyReleaseMask)
  47 #define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
  48                     PointerMotionMask | ButtonMotionMask )
  49 #define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | StructureNotifyMask )
  50
  51
  52 unsigned                d_8to24table[256];
  53 unsigned char   d_15to8table[65536];
  54
  55 cvar_t vid_mode = {"vid_mode", "0", false};
  56 cvar_t vid_fullscreen = {"vid_fullscreen", "1"};
  57
  58 viddef_t        vid;                            // global video state
  59
  60 static qboolean         mouse_avail = true;
  61 static qboolean         mouse_active = false;
  62 // static qboolean              dga_active;
  63 static float    mouse_x, mouse_y;
  64 static float    old_mouse_x, old_mouse_y;
  65 static int p_mouse_x, p_mouse_y;
  66
  67 static cvar_t in_mouse = {"in_mouse", "1", false};
  68 static cvar_t in_dga = {"in_dga", "1", false};
  69 static cvar_t in_dga_mouseaccel = {"in_dga_mouseaccel", "1", false};
  70 static cvar_t m_filter = {"m_filter", "0"};
  71 static cvar_t _windowed_mouse = {"_windowed_mouse", "1"};
  72
  73 qboolean vidmode_ext = false;
  74
  75 static int win_x, win_y;
  76
  77 static int scr_width, scr_height;
  78
  79 static XF86VidModeModeInfo **vidmodes;
  80 //static int default_dotclock_vidmode;
  81 static int num_vidmodes;
  82 static qboolean vidmode_active = false;
  83
  84 /*-----------------------------------------------------------------------*/
  85
  86 int             texture_extension_number = 1;
  87
  88 float           gldepthmin, gldepthmax;
  89
  90 const char *gl_vendor;
  91 const char *gl_renderer;
  92 const char *gl_version;
  93 const char *gl_extensions;
  94
  95 void (*qglMTexCoord2f) (GLenum, GLfloat, GLfloat);
  96 void (*qglSelectTexture) (GLenum);
  97
  98 //static float vid_gamma = 1.0;
  99
 100 // LordHavoc: ARB multitexture support
 101 int gl_mtex_enum = 0;
 102
 103 // LordHavoc: in GLX these are never set, simply provided to make the rest of the code work
 104 qboolean isG200 = false;
 105 qboolean isRagePro = false;
 106 qboolean gl_mtexable = false;
 107 qboolean gl_arrays = false;
 108
 109 /*-----------------------------------------------------------------------*/
 110 static int
 111 XLateKey(XKeyEvent *ev/*, qboolean modified*/)
 112 {
 113 //      char tmp[2];
 114         int key = 0;
 115         KeySym keysym;
 116
 117         keysym = XLookupKeysym(ev, 0);
 118
 119         switch(keysym) {
 120                 case XK_KP_Page_Up:     key = KP_PGUP; break;
 121                 case XK_Page_Up:        key = K_PGUP; break;
 122
 123                 case XK_KP_Page_Down:   key = KP_PGDN; break;
 124                 case XK_Page_Down:      key = K_PGDN; break;
 125
 126                 case XK_KP_Home:        key = KP_HOME; break;
 127                 case XK_Home:           key = K_HOME; break;
 128
 129                 case XK_KP_End:         key = KP_END; break;
 130                 case XK_End:            key = K_END; break;
 131
 132                 case XK_KP_Left:        key = KP_LEFTARROW; break;
 133                 case XK_Left:           key = K_LEFTARROW; break;
 134
 135                 case XK_KP_Right:       key = KP_RIGHTARROW; break;
 136                 case XK_Right:          key = K_RIGHTARROW; break;
 137
 138                 case XK_KP_Down:        key = KP_DOWNARROW; break;
 139                 case XK_Down:           key = K_DOWNARROW; break;
 140
 141                 case XK_KP_Up:          key = KP_UPARROW; break;
 142                 case XK_Up:                     key = K_UPARROW; break;
 143
 144                 case XK_Escape:         key = K_ESCAPE; break;
 145
 146                 case XK_KP_Enter:       key = KP_ENTER; break;
 147                 case XK_Return:         key = K_ENTER; break;
 148
 149                 case XK_Tab:            key = K_TAB; break;
 150
 151                 case XK_F1:                     key = K_F1; break;
 152                 case XK_F2:                     key = K_F2; break;
 153                 case XK_F3:                     key = K_F3; break;
 154                 case XK_F4:                     key = K_F4; break;
 155                 case XK_F5:                     key = K_F5; break;
 156                 case XK_F6:                     key = K_F6; break;
 157                 case XK_F7:                     key = K_F7; break;
 158                 case XK_F8:                     key = K_F8; break;
 159                 case XK_F9:                     key = K_F9; break;
 160                 case XK_F10:            key = K_F10; break;
 161                 case XK_F11:            key = K_F11; break;
 162                 case XK_F12:            key = K_F12; break;
 163
 164                 case XK_BackSpace:      key = K_BACKSPACE; break;
 165
 166                 case XK_KP_Delete:      key = KP_DEL; break;
 167                 case XK_Delete:         key = K_DEL; break;
 168
 169                 case XK_Pause:          key = K_PAUSE; break;
 170
 171                 case XK_Shift_L:
 172                 case XK_Shift_R:        key = K_SHIFT; break;
 173
 174                 case XK_Execute:
 175                 case XK_Control_L:
 176                 case XK_Control_R:      key = K_CTRL; break;
 177
 178                 case XK_Mode_switch:
 179                 case XK_Alt_L:
 180                 case XK_Meta_L:
 181                 case XK_Alt_R:
 182                 case XK_Meta_R:         key = K_ALT; break;
 183
 184                 case XK_Caps_Lock:      key = K_CAPSLOCK; break;
 185                 case XK_KP_Begin:       key = KP_5; break;
 186
 187                 case XK_Insert:         key = K_INS; break;
 188                 case XK_KP_Insert:      key = KP_INS; break;
 189
 190                 case XK_KP_Multiply:    key = KP_MULTIPLY; break;
 191                 case XK_KP_Add:         key = KP_PLUS; break;
 192                 case XK_KP_Subtract:    key = KP_MINUS; break;
 193                 case XK_KP_Divide:      key = KP_DIVIDE; break;
 194
 195                 /* For Sun keyboards */
 196                 case XK_F27:            key = K_HOME; break;
 197                 case XK_F29:            key = K_PGUP; break;
 198                 case XK_F33:            key = K_END; break;
 199                 case XK_F35:            key = K_PGDN; break;
 200
 201                 default:
 202                         if (keysym < 128) {
 203                                 /* ASCII keys */
 204                                 key = keysym;
 205                                 if (/*!modified && */((key >= 'A') && (key <= 'Z'))) {
 206                                         key = key + ('a' - 'A');
 207                                 }
 208                         }
 209                         break;
 210         }
 211
 212         return key;
 213 }
 214
 215 static Cursor CreateNullCursor(Display *display, Window root)
 216 {
 217     Pixmap cursormask;
 218     XGCValues xgc;
 219     GC gc;
 220     XColor dummycolour;
 221     Cursor cursor;
 222
 223     cursormask = XCreatePixmap(display, root, 1, 1, 1/*depth*/);
 224     xgc.function = GXclear;
 225     gc =  XCreateGC(display, cursormask, GCFunction, &xgc);
 226     XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
 227     dummycolour.pixel = 0;
 228     dummycolour.red = 0;
 229     dummycolour.flags = 04;
 230     cursor = XCreatePixmapCursor(display, cursormask, cursormask,
 231           &dummycolour,&dummycolour, 0,0);
 232     XFreePixmap(display,cursormask);
 233     XFreeGC(display,gc);
 234     return cursor;
 235 }
 236
 237 static void install_grabs(void)
 238 {
 239         XWindowAttributes attribs_1;
 240         XSetWindowAttributes attribs_2;
 241
 242         XGetWindowAttributes(dpy, win, &attribs_1);
 243         attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
 244         XChangeWindowAttributes(dpy, win, CWEventMask, &attribs_2);
 245
 246 // inviso cursor
 247         XDefineCursor(dpy, win, CreateNullCursor(dpy, win));
 248
 249         XGrabPointer(dpy, win,  True, 0, GrabModeAsync, GrabModeAsync,
 250                      win, None, CurrentTime);
 251
 252         if (in_dga.value) {
 253                 int MajorVersion, MinorVersion;
 254
 255                 if (!XF86DGAQueryVersion(dpy, &MajorVersion, &MinorVersion)) {
 256                         // unable to query, probalby not supported
 257                         Con_Printf( "Failed to detect XF86DGA Mouse\n" );
 258                         in_dga.value = 0;
 259                 } else {
 260                         in_dga.value = 1;
 261                         XF86DGADirectVideo(dpy, DefaultScreen(dpy), XF86DGADirectMouse);
 262                         XWarpPointer(dpy, None, win, 0, 0, 0, 0, 0, 0);
 263                 }
 264         } else {
 265                 XWarpPointer(dpy, None, win,
 266                                          0, 0, 0, 0,
 267                                          vid.width / 2, vid.height / 2);
 268         }
 269
 270         XGrabKeyboard(dpy, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 271
 272         mouse_active = true;
 273         mouse_x = mouse_y = 0;
 274
 275 //      XSync(dpy, True);
 276 }
 277
 278 static void uninstall_grabs(void)
 279 {
 280         if (!dpy || !win)
 281                 return;
 282
 283         if (in_dga.value == 1) {
 284                 XF86DGADirectVideo(dpy, DefaultScreen(dpy), 0);
 285         }
 286
 287         XUngrabPointer(dpy, CurrentTime);
 288         XUngrabKeyboard(dpy, CurrentTime);
 289
 290 // inviso cursor
 291         XUndefineCursor(dpy, win);
 292
 293         mouse_active = false;
 294 }
 295
 296 static void HandleEvents(void)
 297 {
 298         XEvent event;
 299 //      KeySym ks;
 300         int b;
 301         qboolean dowarp = false;
 302
 303         if (!dpy)
 304                 return;
 305
 306         while (XPending(dpy)) {
 307                 XNextEvent(dpy, &event);
 308
 309                 switch (event.type) {
 310                 case KeyPress:
 311                 case KeyRelease:
 312                         Key_Event(XLateKey(&event.xkey), event.type == KeyPress);
 313                         break;
 314
 315                 case MotionNotify:
 316                         if (in_dga.value == 1) {
 317                                 mouse_x += event.xmotion.x_root * in_dga_mouseaccel.value;
 318                                 mouse_y += event.xmotion.y_root * in_dga_mouseaccel.value;
 319                         } else {
 320                                 if (!p_mouse_x && !p_mouse_y) {
 321                                         Con_Printf("event->xmotion.x: %d\n", event.xmotion.x);
 322                                         Con_Printf("event->xmotion.y: %d\n", event.xmotion.y);
 323                                 }
 324                                 if (vid_fullscreen.value || _windowed_mouse.value) {
 325                                         if (!event.xmotion.send_event) {
 326                                                 mouse_x += (event.xmotion.x - p_mouse_x);
 327                                                 mouse_y += (event.xmotion.y - p_mouse_y);
 328                                                 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4
 329                                                 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4) {
 330                                                         dowarp = true;
 331                                                 }
 332                                         }
 333                                 } else {
 334                                         mouse_x += (event.xmotion.x - p_mouse_x);
 335                                         mouse_y += (event.xmotion.y - p_mouse_y);
 336                                 }
 337                                 p_mouse_x = event.xmotion.x;
 338                                 p_mouse_y = event.xmotion.y;
 339                         }
 340                         break;
 341
 342                 case ButtonPress:
 343                         b=-1;
 344                         if (event.xbutton.button == 1)
 345                                 b = 0;
 346                         else if (event.xbutton.button == 2)
 347                                 b = 2;
 348                         else if (event.xbutton.button == 3)
 349                                 b = 1;
 350                         if (b>=0)
 351                                 Key_Event(K_MOUSE1 + b, true);
 352                         break;
 353
 354                 case ButtonRelease:
 355                         b=-1;
 356                         if (event.xbutton.button == 1)
 357                                 b = 0;
 358                         else if (event.xbutton.button == 2)
 359                                 b = 2;
 360                         else if (event.xbutton.button == 3)
 361                                 b = 1;
 362                         if (b>=0)
 363                                 Key_Event(K_MOUSE1 + b, false);
 364                         break;
 365
 366                 case CreateNotify :
 367                         win_x = event.xcreatewindow.x;
 368                         win_y = event.xcreatewindow.y;
 369                         break;
 370
 371                 case ConfigureNotify :
 372                         win_x = event.xconfigure.x;
 373                         win_y = event.xconfigure.y;
 374                         break;
 375                 }
 376         }
 377
 378         if (dowarp) {
 379                 /* move the mouse to the window center again */
 380                 p_mouse_x = vid.width / 2;
 381                 p_mouse_y = vid.height / 2;
 382                 XWarpPointer(dpy, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
 383         }
 384
 385 }
 386
 387 static void IN_DeactivateMouse( void )
 388 {
 389         if (!mouse_avail || !dpy || !win)
 390                 return;
 391
 392         if (mouse_active) {
 393                 uninstall_grabs();
 394                 mouse_active = false;
 395         }
 396 }
 397
 398 static void IN_ActivateMouse( void )
 399 {
 400         if (!mouse_avail || !dpy || !win)
 401                 return;
 402
 403         if (!mouse_active) {
 404                 mouse_x = mouse_y = 0; // don't spazz
 405                 install_grabs();
 406                 mouse_active = true;
 407         }
 408 }
 409
 410
 411 void VID_Shutdown(void)
 412 {
 413         if (!ctx || !dpy)
 414                 return;
 415
 416         if (dpy) {
 417                 uninstall_grabs();
 418
 419                 if (vidmode_active)
 420                         XF86VidModeSwitchToMode(dpy, scrnum, vidmodes[0]);
 421 /* Disabled, causes a segfault during shutdown.
 422                 if (ctx)
 423                         glXDestroyContext(dpy, ctx);
 424 */
 425                 if (win)
 426                         XDestroyWindow(dpy, win);
 427                 XCloseDisplay(dpy);
 428         }
 429         vidmode_active = false;
 430         dpy = NULL;
 431         win = 0;
 432         ctx = NULL;
 433 }
 434
 435 void signal_handler(int sig)
 436 {
 437         printf("Received signal %d, exiting...\n", sig);
 438         Sys_Quit();
 439         exit(0);
 440 }
 441
 442 void InitSig(void)
 443 {
 444         signal(SIGHUP, signal_handler);
 445         signal(SIGINT, signal_handler);
 446         signal(SIGQUIT, signal_handler);
 447         signal(SIGILL, signal_handler);
 448         signal(SIGTRAP, signal_handler);
 449         signal(SIGIOT, signal_handler);
 450         signal(SIGBUS, signal_handler);
 451         signal(SIGFPE, signal_handler);
 452         signal(SIGSEGV, signal_handler);
 453         signal(SIGTERM, signal_handler);
 454 }
 455
 456 /*
 457 void (*qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 458 void (*qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 459 void (*qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 460 void (*qglArrayElement)(GLint i);
 461 void (*qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
 462 void (*qglMTexCoord2f)(GLenum, GLfloat, GLfloat);
 463 void (*qglSelectTexture)(GLenum);
 464
 465 void VID_CheckVertexArrays (void)
 466 {
 467         void *prjobj;
 468         if (COM_CheckParm("-novertex"))
 469         {
 470                 Con_Printf("...vertex array support disabled\n");
 471                 return;
 472         }
 473         if ((prjobj = dlopen(NULL, RTLD_LAZY)) == NULL)
 474         {
 475                 Con_Printf("Unable to open symbol list for main program.\n");
 476                 return;
 477         }
 478         qglMTexCoord2fSGIS = (void *) dlsym(prjobj, "glMTexCoord2fSGIS");
 479         if ((qglArrayElement = (void *) dlsym(prjobj, "glArrayElement"))
 480          && (qglColorPointer = (void *) dlsym(prjobj, "glColorPointer"))
 481 //       && (qglDrawArrays = (void *) dlsym(prjobj, "glDrawArrays"))
 482          && (qglDrawElements = (void *) dlsym(prjobj, "glDrawElements"))
 483 //       && (qglInterleavedArrays = (void *) dlsym(prjobj, "glInterleavedArrays"))
 484          && (qglTexCoordPointer = (void *) dlsym(prjobj, "glTexCoordPointer"))
 485          && (qglVertexPointer = (void *) dlsym(prjobj, "glVertexPointer"))
 486                 )
 487         {
 488                 Con_Printf("...vertex array support detected\n");
 489                 gl_arrays = true;
 490                 dlclose(prjobj);
 491                 return;
 492         }
 493
 494         Con_Printf("...vertex array support disabled (not detected - get a better driver)\n");
 495         dlclose(prjobj);
 496 }
 497 */
 498
 499 // LordHavoc: require OpenGL 1.2.x
 500 void VID_CheckVertexArrays (void)
 501 {
 502         gl_arrays = true;
 503 }
 504
 505 void VID_CheckMultitexture(void)
 506 {
 507         void *prjobj;
 508         qglMTexCoord2f = NULL;
 509         qglSelectTexture = NULL;
 510         // Check to see if multitexture is disabled
 511         if (COM_CheckParm("-nomtex"))
 512         {
 513                 Con_Printf("...multitexture disabled\n");
 514                 return;
 515         }
 516         if ((prjobj = dlopen(NULL, RTLD_LAZY)) == NULL)
 517         {
 518                 Con_Printf("Unable to open symbol list for main program.\n");
 519                 return;
 520         }
 521         // Test for ARB_multitexture
 522         if (!COM_CheckParm("-SGISmtex") && strstr(gl_extensions, "GL_ARB_multitexture "))
 523         {
 524                 Con_Printf("...using GL_ARB_multitexture\n");
 525                 qglMTexCoord2f = (void *) dlsym(prjobj, "glMultiTexCoord2fARB");
 526                 qglSelectTexture = (void *) dlsym(prjobj, "glActiveTextureARB");
 527                 gl_mtexable = true;
 528                 gl_mtex_enum = GL_TEXTURE0_ARB;
 529         }
 530         else if (strstr(gl_extensions, "GL_SGIS_multitexture ")) // Test for SGIS_multitexture (if ARB_multitexture not found)
 531         {
 532                 Con_Printf("...using GL_SGIS_multitexture\n");
 533                 qglMTexCoord2f = (void *) dlsym(prjobj, "glMTexCoord2fSGIS");
 534                 qglSelectTexture = (void *) dlsym(prjobj, "glSelectTextureSGIS");
 535                 gl_mtexable = true;
 536                 gl_mtex_enum = TEXTURE0_SGIS;
 537         }
 538         if (!gl_mtexable)
 539                 Con_Printf("...multitexture disabled (not detected)\n");
 540         dlclose(prjobj);
 541 }
 542
 543 /*
 544 =================
 545 GL_BeginRendering
 546
 547 =================
 548 */
 549 void GL_BeginRendering (int *x, int *y, int *width, int *height)
 550 {
 551         *x = *y = 0;
 552         *width = scr_width;
 553         *height = scr_height;
 554
 555 //      glViewport (*x, *y, *width, *height);
 556 }
 557
 558
 559 void GL_EndRendering (void)
 560 {
 561         if (!r_render.value)
 562                 return;
 563         glFlush();
 564         glXSwapBuffers(dpy, win);
 565 }
 566
 567 void VID_Init()
 568 {
 569         int i;
 570         int attrib[] = {
 571                 GLX_RGBA,
 572                 GLX_RED_SIZE, 1,
 573                 GLX_GREEN_SIZE, 1,
 574                 GLX_BLUE_SIZE, 1,
 575                 GLX_DOUBLEBUFFER,
 576                 GLX_DEPTH_SIZE, 1,
 577                 None
 578         };
 579 //      char    gldir[MAX_OSPATH];
 580         int width = 640, height = 480;
 581         XSetWindowAttributes attr;
 582         unsigned long mask;
 583         Window root;
 584         XVisualInfo *visinfo;
 585         qboolean fullscreen = true;
 586         int MajorVersion, MinorVersion;
 587         int actualWidth, actualHeight;
 588
 589         Cvar_RegisterVariable (&vid_mode);
 590         Cvar_RegisterVariable (&vid_fullscreen);
 591         Cvar_RegisterVariable (&in_mouse);
 592         Cvar_RegisterVariable (&in_dga);
 593         Cvar_RegisterVariable (&in_dga_mouseaccel);
 594         Cvar_RegisterVariable (&m_filter);
 595
 596 // interpret command-line params
 597
 598 // set vid parameters
 599         if ((i = COM_CheckParm("-window")) != 0)
 600                 fullscreen = false;
 601
 602         if ((i = COM_CheckParm("-width")) != 0)
 603                 width = atoi(com_argv[i+1]);
 604
 605         if ((i = COM_CheckParm("-height")) != 0)
 606                 height = atoi(com_argv[i+1]);
 607
 608         if ((i = COM_CheckParm("-conwidth")) != 0)
 609                 vid.conwidth = atoi(com_argv[i+1]);
 610         else
 611                 vid.conwidth = 640;
 612
 613         vid.conwidth &= 0xfff8; // make it a multiple of eight
 614
 615         if (vid.conwidth < 320)
 616                 vid.conwidth = 320;
 617
 618         // pick a conheight that matches with correct aspect
 619         vid.conheight = vid.conwidth*3 / 4;
 620
 621         if ((i = COM_CheckParm("-conheight")) != 0)
 622                 vid.conheight = atoi(com_argv[i+1]);
 623         if (vid.conheight < 200)
 624                 vid.conheight = 200;
 625
 626         if (!(dpy = XOpenDisplay(NULL))) {
 627                 fprintf(stderr, "Error couldn't open the X display\n");
 628                 exit(1);
 629         }
 630
 631         scrnum = DefaultScreen(dpy);
 632         root = RootWindow(dpy, scrnum);
 633
 634         // Get video mode list
 635         MajorVersion = MinorVersion = 0;
 636         if (!XF86VidModeQueryVersion(dpy, &MajorVersion, &MinorVersion)) {
 637                 vidmode_ext = false;
 638         } else {
 639                 Con_Printf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
 640                 vidmode_ext = true;
 641         }
 642
 643         visinfo = glXChooseVisual(dpy, scrnum, attrib);
 644         if (!visinfo) {
 645                 fprintf(stderr, "qkHack: Error couldn't get an RGB, Double-buffered, Depth visual\n");
 646                 exit(1);
 647         }
 648
 649         if (vidmode_ext) {
 650                 int best_fit, best_dist, dist, x, y;
 651
 652                 XF86VidModeGetAllModeLines(dpy, scrnum, &num_vidmodes, &vidmodes);
 653
 654                 // Are we going fullscreen?  If so, let's change video mode
 655                 if (fullscreen) {
 656                         best_dist = 9999999;
 657                         best_fit = -1;
 658
 659                         for (i = 0; i < num_vidmodes; i++) {
 660                                 if (width > vidmodes[i]->hdisplay ||
 661                                         height > vidmodes[i]->vdisplay)
 662                                         continue;
 663
 664                                 x = width - vidmodes[i]->hdisplay;
 665                                 y = height - vidmodes[i]->vdisplay;
 666                                 dist = (x * x) + (y * y);
 667                                 if (dist < best_dist) {
 668                                         best_dist = dist;
 669                                         best_fit = i;
 670                                 }
 671                         }
 672
 673                         if (best_fit != -1) {
 674                                 actualWidth = vidmodes[best_fit]->hdisplay;
 675                                 actualHeight = vidmodes[best_fit]->vdisplay;
 676
 677                                 // change to the mode
 678                                 XF86VidModeSwitchToMode(dpy, scrnum, vidmodes[best_fit]);
 679                                 vidmode_active = true;
 680
 681                                 // Move the viewport to top left
 682                                 XF86VidModeSetViewPort(dpy, scrnum, 0, 0);
 683                         } else
 684                                 fullscreen = 0;
 685                 }
 686         }
 687
 688         /* window attributes */
 689         attr.background_pixel = 0;
 690         attr.border_pixel = 0;
 691         attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
 692         attr.event_mask = X_MASK;
 693         if (vidmode_active) {
 694                 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore |
 695                         CWEventMask | CWOverrideRedirect;
 696                 attr.override_redirect = True;
 697                 attr.backing_store = NotUseful;
 698                 attr.save_under = False;
 699         } else
 700                 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 701
 702         win = XCreateWindow(dpy, root, 0, 0, width, height,
 703                                                 0, visinfo->depth, InputOutput,
 704                                                 visinfo->visual, mask, &attr);
 705         XMapWindow(dpy, win);
 706
 707         if (vidmode_active) {
 708                 XMoveWindow(dpy, win, 0, 0);
 709                 XRaiseWindow(dpy, win);
 710                 XWarpPointer(dpy, None, win, 0, 0, 0, 0, 0, 0);
 711                 XFlush(dpy);
 712                 // Move the viewport to top left
 713                 XF86VidModeSetViewPort(dpy, scrnum, 0, 0);
 714         }
 715
 716         XFlush(dpy);
 717
 718         ctx = glXCreateContext(dpy, visinfo, NULL, True);
 719
 720         glXMakeCurrent(dpy, win, ctx);
 721
 722         scr_width = width;
 723         scr_height = height;
 724
 725         if (vid.conheight > height)
 726                 vid.conheight = height;
 727         if (vid.conwidth > width)
 728                 vid.conwidth = width;
 729         vid.width = vid.conwidth;
 730         vid.height = vid.conheight;
 731
 732         vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0);
 733
 734         InitSig(); // trap evil signals
 735
 736         GL_Init();
 737
 738         Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
 739
 740         vid.recalc_refdef = 1;                          // force a surface cache flush
 741
 742         install_grabs();
 743 }
 744
 745 void Sys_SendKeyEvents(void)
 746 {
 747         HandleEvents();
 748 }
 749
 750 void Force_CenterView_f (void)
 751 {
 752         cl.viewangles[PITCH] = 0;
 753 }
 754
 755 void IN_Init(void)
 756 {
 757 }
 758
 759 void IN_Shutdown(void)
 760 {
 761 }
 762
 763 /*
 764 ===========
 765 IN_Commands
 766 ===========
 767 */
 768 void IN_Commands (void)
 769 {
 770         if (!dpy || !win)
 771                 return;
 772
 773         if (vidmode_active || key_dest == key_game)
 774                 IN_ActivateMouse();
 775         else
 776                 IN_DeactivateMouse ();
 777 }
 778
 779 /*
 780 ===========
 781 IN_Move
 782 ===========
 783 */
 784 void IN_MouseMove (usercmd_t *cmd)
 785 {
 786         if (!mouse_avail)
 787                 return;
 788
 789         if (!mouse_avail)
 790                 return;
 791
 792         if (m_filter.value) {
 793                 mouse_x = (mouse_x + old_mouse_x) * 0.5;
 794                 mouse_y = (mouse_y + old_mouse_y) * 0.5;
 795
 796                 old_mouse_x = mouse_x;
 797                 old_mouse_y = mouse_y;
 798         }
 799
 800         mouse_x *= sensitivity.value;
 801         mouse_y *= sensitivity.value;
 802
 803         if (in_strafe.state & 1)
 804                 cmd->sidemove += m_side.value * mouse_x;
 805         else
 806                 cl.viewangles[YAW] -= m_yaw.value * mouse_x;
 807
 808 /*        if (freelook)*/
 809                 V_StopPitchDrift ();
 810
 811         if (/*freelook && */!(in_strafe.state & 1)) {
 812                 cl.viewangles[PITCH] += m_pitch.value * mouse_y;
 813                 cl.viewangles[PITCH] = bound (-70, cl.viewangles[PITCH], 80);
 814         } else {
 815                 if ((in_strafe.state & 1) && noclip_anglehack)
 816                         cmd->upmove -= m_forward.value * mouse_y;
 817                 else
 818                         cmd->forwardmove -= m_forward.value * mouse_y;
 819         }
 820         mouse_x = mouse_y = 0.0;
 821 }
 822
 823 void IN_Move (usercmd_t *cmd)
 824 {
 825         IN_MouseMove(cmd);
 826 }
 827
 828