2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
20 //#include <termios.h>
21 //#include <sys/ioctl.h>
22 //#include <sys/stat.h>
31 #include <X11/Xutil.h>
34 #include <X11/keysym.h>
35 #include <X11/cursorfont.h>
37 #include <X11/extensions/XShm.h>
38 #if !defined(__APPLE__) && !defined(__MACH__)
39 #include <X11/extensions/xf86dga.h>
41 #include <X11/extensions/xf86vmode.h>
45 // Tell startup code that we have a client
46 int cl_available = true;
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);
56 //GLX_ARB_get_proc_address
57 void *(GLAPIENTRY *qglXGetProcAddressARB)(const GLubyte *procName);
59 static dllfunction_t getprocaddressfuncs[] =
61 {"glXGetProcAddressARB", (void **) &qglXGetProcAddressARB},
65 //GLX_SGI_swap_control
66 GLint (GLAPIENTRY *qglXSwapIntervalSGI)(GLint interval);
68 static dllfunction_t swapcontrolfuncs[] =
70 {"glXSwapIntervalSGI", (void **) &qglXSwapIntervalSGI},
74 static Display *vidx11_display = NULL;
75 static int vidx11_screen;
77 static GLXContext ctx = NULL;
79 Atom wm_delete_window_atom;
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 | \
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;
98 cvar_t vid_dga = {CVAR_SAVE, "vid_dga", "1"};
99 cvar_t vid_dga_mouseaccel = {0, "vid_dga_mouseaccel", "1"};
102 qboolean vidmode_ext = false;
104 static int win_x, win_y;
106 static XF86VidModeModeInfo **vidmodes;
107 static int num_vidmodes;
108 static qboolean vid_isfullscreen = false;
110 static Visual *vidx11_visual;
111 static Colormap vidx11_colormap;
113 /*-----------------------------------------------------------------------*/
115 static int XLateKey(XKeyEvent *ev, char *ascii)
119 KeySym keysym, shifted;
121 keysym = XLookupKeysym (ev, 0);
122 XLookupString(ev, buf, sizeof buf, &shifted, 0);
127 case XK_KP_Page_Up: key = K_KP_PGUP; break;
128 case XK_Page_Up: key = K_PGUP; break;
130 case XK_KP_Page_Down: key = K_KP_PGDN; break;
131 case XK_Page_Down: key = K_PGDN; break;
133 case XK_KP_Home: key = K_KP_HOME; break;
134 case XK_Home: key = K_HOME; break;
136 case XK_KP_End: key = K_KP_END; break;
137 case XK_End: key = K_END; break;
139 case XK_KP_Left: key = K_KP_LEFTARROW; break;
140 case XK_Left: key = K_LEFTARROW; break;
142 case XK_KP_Right: key = K_KP_RIGHTARROW; break;
143 case XK_Right: key = K_RIGHTARROW; break;
145 case XK_KP_Down: key = K_KP_DOWNARROW; break;
146 case XK_Down: key = K_DOWNARROW; break;
148 case XK_KP_Up: key = K_KP_UPARROW; break;
149 case XK_Up: key = K_UPARROW; break;
151 case XK_Escape: key = K_ESCAPE; break;
153 case XK_KP_Enter: key = K_KP_ENTER; break;
154 case XK_Return: key = K_ENTER; break;
156 case XK_Tab: key = K_TAB; break;
158 case XK_F1: key = K_F1; break;
160 case XK_F2: key = K_F2; break;
162 case XK_F3: key = K_F3; break;
164 case XK_F4: key = K_F4; break;
166 case XK_F5: key = K_F5; break;
168 case XK_F6: key = K_F6; break;
170 case XK_F7: key = K_F7; break;
172 case XK_F8: key = K_F8; break;
174 case XK_F9: key = K_F9; break;
176 case XK_F10: key = K_F10; break;
178 case XK_F11: key = K_F11; break;
180 case XK_F12: key = K_F12; break;
182 case XK_BackSpace: key = K_BACKSPACE; break;
184 case XK_KP_Delete: key = K_KP_DEL; break;
185 case XK_Delete: key = K_DEL; break;
187 case XK_Pause: key = K_PAUSE; break;
190 case XK_Shift_R: key = K_SHIFT; break;
194 case XK_Control_R: key = K_CTRL; break;
199 case XK_Meta_R: key = K_ALT; break;
201 case XK_KP_Begin: key = K_KP_5; break;
203 case XK_Insert:key = K_INS; break;
204 case XK_KP_Insert: key = K_KP_INS; break;
206 case XK_KP_Multiply: key = '*'; break;
207 case XK_KP_Add: key = K_KP_PLUS; break;
208 case XK_KP_Subtract: key = K_KP_MINUS; break;
209 case XK_KP_Divide: key = K_KP_SLASH; break;
212 if (keysym < 32 && keysym > 126)
215 if (keysym >= 'A' && keysym <= 'Z')
216 key = keysym - 'A' + 'a';
226 static Cursor CreateNullCursor(Display *display, Window root)
234 cursormask = XCreatePixmap(display, root, 1, 1, 1);
235 xgc.function = GXclear;
236 gc = XCreateGC(display, cursormask, GCFunction, &xgc);
237 XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
238 dummycolour.pixel = 0;
240 dummycolour.flags = 04;
241 cursor = XCreatePixmapCursor(display, cursormask, cursormask, &dummycolour,&dummycolour, 0,0);
242 XFreePixmap(display,cursormask);
247 static void IN_Activate (qboolean grab)
253 if (!vid_usingmouse && mouse_avail && win)
255 XWindowAttributes attribs_1;
256 XSetWindowAttributes attribs_2;
258 XGetWindowAttributes(vidx11_display, win, &attribs_1);
259 attribs_2.event_mask = attribs_1.your_event_mask | KEY_MASK | MOUSE_MASK;
260 XChangeWindowAttributes(vidx11_display, win, CWEventMask, &attribs_2);
263 XDefineCursor(vidx11_display, win, CreateNullCursor(vidx11_display, win));
265 XGrabPointer(vidx11_display, win, True, 0, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
270 int MajorVersion, MinorVersion;
272 if (!XF86DGAQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
274 // unable to query, probably not supported
275 Con_Print( "Failed to detect XF86DGA Mouse\n" );
276 Cvar_SetValueQuick(&vid_dga, 0);
277 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
281 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), XF86DGADirectMouse);
282 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
287 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
289 XGrabKeyboard(vidx11_display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
291 mouse_x = mouse_y = 0;
292 cl_ignoremousemove = true;
293 vid_usingmouse = true;
302 XF86DGADirectVideo(vidx11_display, DefaultScreen(vidx11_display), 0);
305 XUngrabPointer(vidx11_display, CurrentTime);
306 XUngrabKeyboard(vidx11_display, CurrentTime);
310 XUndefineCursor(vidx11_display, win);
312 cl_ignoremousemove = true;
313 vid_usingmouse = false;
318 static void HandleEvents(void)
323 qboolean dowarp = false;
328 while (XPending(vidx11_display))
330 XNextEvent(vidx11_display, &event);
336 key = XLateKey (&event.xkey, &ascii);
337 Key_Event(key, ascii, true);
342 key = XLateKey (&event.xkey, &ascii);
343 Key_Event(key, ascii, false);
351 if (vid_dga.integer == 1)
353 mouse_x += event.xmotion.x_root * vid_dga_mouseaccel.value;
354 mouse_y += event.xmotion.y_root * vid_dga_mouseaccel.value;
360 if (!event.xmotion.send_event)
362 mouse_x += event.xmotion.x - p_mouse_x;
363 mouse_y += event.xmotion.y - p_mouse_y;
364 if (abs(vid.width/2 - event.xmotion.x) > vid.width / 4 || abs(vid.height/2 - event.xmotion.y) > vid.height / 4)
367 p_mouse_x = event.xmotion.x;
368 p_mouse_y = event.xmotion.y;
372 // ui_mouseupdate(event.xmotion.x, event.xmotion.y);
376 // mouse button pressed
377 switch(event.xbutton.button)
380 Key_Event(K_MOUSE1, 0, true);
383 Key_Event(K_MOUSE3, 0, true);
386 Key_Event(K_MOUSE2, 0, true);
389 Key_Event(K_MWHEELUP, 0, true);
392 Key_Event(K_MWHEELDOWN, 0, true);
395 Key_Event(K_MOUSE4, 0, true);
398 Key_Event(K_MOUSE5, 0, true);
401 Key_Event(K_MOUSE6, 0, true);
404 Key_Event(K_MOUSE7, 0, true);
407 Key_Event(K_MOUSE8, 0, true);
410 Key_Event(K_MOUSE9, 0, true);
413 Key_Event(K_MOUSE10, 0, true);
416 Con_Printf("HandleEvents: ButtonPress gave value %d, 1-12 expected\n", event.xbutton.button);
422 // mouse button released
423 switch(event.xbutton.button)
426 Key_Event(K_MOUSE1, 0, false);
429 Key_Event(K_MOUSE3, 0, false);
432 Key_Event(K_MOUSE2, 0, false);
435 Key_Event(K_MWHEELUP, 0, false);
438 Key_Event(K_MWHEELDOWN, 0, false);
441 Key_Event(K_MOUSE4, 0, false);
444 Key_Event(K_MOUSE5, 0, false);
447 Key_Event(K_MOUSE6, 0, false);
450 Key_Event(K_MOUSE7, 0, false);
453 Key_Event(K_MOUSE8, 0, false);
456 Key_Event(K_MOUSE9, 0, false);
459 Key_Event(K_MOUSE10, 0, false);
462 Con_Printf("HandleEvents: ButtonRelease gave value %d, 1-12 expected\n", event.xbutton.button);
469 win_x = event.xcreatewindow.x;
470 win_y = event.xcreatewindow.y;
473 case ConfigureNotify:
474 // window changed size/location
475 win_x = event.xconfigure.x;
476 win_y = event.xconfigure.y;
479 // window has been destroyed
483 // window manager messages
484 if ((event.xclient.format == 32) && ((unsigned int)event.xclient.data.l[0] == wm_delete_window_atom))
490 vid_activewindow = false;
491 VID_RestoreSystemGamma();
494 // window iconified/rolledup/whatever
496 vid_activewindow = false;
497 VID_RestoreSystemGamma();
500 // window is now the input focus
501 vid_activewindow = true;
504 // window is no longer the input focus
505 vid_activewindow = false;
506 VID_RestoreSystemGamma();
509 // mouse entered window
519 /* move the mouse to the window center again */
520 p_mouse_x = vid.width / 2;
521 p_mouse_y = vid.height / 2;
522 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
526 static void *prjobj = NULL;
528 static void GL_CloseLibrary(void)
534 qglXGetProcAddressARB = NULL;
537 gl_platformextensions = "";
540 static int GL_OpenLibrary(const char *name)
542 Con_Printf("Loading OpenGL driver %s\n", name);
544 if (!(prjobj = dlopen(name, RTLD_LAZY)))
546 Con_Printf("Unable to open symbol list for %s\n", name);
549 strcpy(gl_driver, name);
553 void *GL_GetProcAddress(const char *name)
556 if (qglXGetProcAddressARB != NULL)
557 p = (void *) qglXGetProcAddressARB(name);
559 p = (void *) dlsym(prjobj, name);
563 void VID_Shutdown(void)
565 if (!ctx || !vidx11_display)
571 VID_RestoreSystemGamma();
573 // FIXME: glXDestroyContext here?
574 if (vid_isfullscreen)
575 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[0]);
577 XDestroyWindow(vidx11_display, win);
578 XCloseDisplay(vidx11_display);
581 vid_isfullscreen = false;
582 vidx11_display = NULL;
590 void signal_handler(int sig)
592 Con_Printf("Received signal %d, exiting...\n", sig);
593 VID_RestoreSystemGamma();
600 signal(SIGHUP, signal_handler);
601 signal(SIGINT, signal_handler);
602 signal(SIGQUIT, signal_handler);
603 signal(SIGILL, signal_handler);
604 signal(SIGTRAP, signal_handler);
605 signal(SIGIOT, signal_handler);
606 signal(SIGBUS, signal_handler);
607 signal(SIGFPE, signal_handler);
608 signal(SIGSEGV, signal_handler);
609 signal(SIGTERM, signal_handler);
612 void VID_Finish (void)
614 vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
615 if (vid_usingvsync != vid_usevsync && gl_videosyncavailable)
617 vid_usingvsync = vid_usevsync;
618 if (qglXSwapIntervalSGI (vid_usevsync))
619 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");
622 // handle the mouse state when windowed if that's changed
623 vid_usemouse = false;
624 if (vid_mouse.integer && !key_consoleactive && !cls.demoplayback)
626 if (!vid_activewindow)
627 vid_usemouse = false;
628 if (vid_isfullscreen)
630 IN_Activate(vid_usemouse);
632 if (r_render.integer)
634 if (r_speeds.integer || gl_finish.integer)
636 qglXSwapBuffers(vidx11_display, win);
640 int VID_SetGamma(unsigned short *ramps)
642 return XF86VidModeSetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
645 int VID_GetGamma(unsigned short *ramps)
647 return XF86VidModeGetGammaRamp(vidx11_display, vidx11_screen, 256, ramps, ramps + 256, ramps + 512);
653 Cvar_RegisterVariable (&vid_dga);
654 Cvar_RegisterVariable (&vid_dga_mouseaccel);
656 InitSig(); // trap evil signals
657 // COMMANDLINEOPTION: Input: -nomouse disables mouse support (see also vid_mouse cvar)
658 if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
662 void VID_BuildGLXAttrib(int *attrib, int stencil)
664 *attrib++ = GLX_RGBA;
665 *attrib++ = GLX_RED_SIZE;*attrib++ = 1;
666 *attrib++ = GLX_GREEN_SIZE;*attrib++ = 1;
667 *attrib++ = GLX_BLUE_SIZE;*attrib++ = 1;
668 *attrib++ = GLX_DOUBLEBUFFER;
669 *attrib++ = GLX_DEPTH_SIZE;*attrib++ = 1;
670 // if stencil is enabled, ask for alpha too
673 *attrib++ = GLX_STENCIL_SIZE;*attrib++ = 8;
674 *attrib++ = GLX_ALPHA_SIZE;*attrib++ = 1;
679 int VID_InitMode(int fullscreen, int width, int height, int bpp)
683 XSetWindowAttributes attr;
686 XVisualInfo *visinfo;
687 int MajorVersion, MinorVersion;
688 const char *drivername;
690 #if defined(__APPLE__) && defined(__MACH__)
691 drivername = "/usr/X11R6/lib/libGL.1.dylib";
693 drivername = "libGL.so.1";
695 // 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
696 // 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
697 // LordHavoc: although this works on MacOSX, it's useless there (as there is only one system libGL)
698 i = COM_CheckParm("-gl_driver");
699 if (i && i < com_argc - 1)
700 drivername = com_argv[i + 1];
701 if (!GL_OpenLibrary(drivername))
703 Con_Printf("Unable to load GL driver \"%s\"\n", drivername);
707 if (!(vidx11_display = XOpenDisplay(NULL)))
709 Con_Print("Couldn't open the X display\n");
713 vidx11_screen = DefaultScreen(vidx11_display);
714 root = RootWindow(vidx11_display, vidx11_screen);
716 // Get video mode list
717 MajorVersion = MinorVersion = 0;
718 if (!XF86VidModeQueryVersion(vidx11_display, &MajorVersion, &MinorVersion))
722 Con_DPrintf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
726 if ((qglXChooseVisual = GL_GetProcAddress("glXChooseVisual")) == NULL
727 || (qglXCreateContext = GL_GetProcAddress("glXCreateContext")) == NULL
728 || (qglXMakeCurrent = GL_GetProcAddress("glXMakeCurrent")) == NULL
729 || (qglXSwapBuffers = GL_GetProcAddress("glXSwapBuffers")) == NULL
730 || (qglXQueryExtensionsString = GL_GetProcAddress("glXQueryExtensionsString")) == NULL)
732 Con_Printf("glX functions not found in %s\n", gl_driver);
736 VID_BuildGLXAttrib(attrib, bpp == 32);
737 visinfo = qglXChooseVisual(vidx11_display, vidx11_screen, attrib);
740 Con_Print("Couldn't get an RGB, Double-buffered, Depth visual\n");
746 int best_fit, best_dist, dist, x, y;
748 // Are we going fullscreen? If so, let's change video mode
751 XF86VidModeGetAllModeLines(vidx11_display, vidx11_screen, &num_vidmodes, &vidmodes);
755 for (i = 0; i < num_vidmodes; i++)
757 if (width > vidmodes[i]->hdisplay || height > vidmodes[i]->vdisplay)
760 x = width - vidmodes[i]->hdisplay;
761 y = height - vidmodes[i]->vdisplay;
762 dist = (x * x) + (y * y);
763 if (dist < best_dist)
772 // LordHavoc: changed from ActualWidth/ActualHeight =,
773 // to width/height =, so the window will take the full area of
775 width = vidmodes[best_fit]->hdisplay;
776 height = vidmodes[best_fit]->vdisplay;
778 // change to the mode
779 XF86VidModeSwitchToMode(vidx11_display, vidx11_screen, vidmodes[best_fit]);
780 vid_isfullscreen = true;
782 // Move the viewport to top left
783 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
790 // LordHavoc: save the visual for use in gamma ramp settings later
791 vidx11_visual = visinfo->visual;
793 /* window attributes */
794 attr.background_pixel = 0;
795 attr.border_pixel = 0;
796 // LordHavoc: save the colormap for later, too
797 vidx11_colormap = attr.colormap = XCreateColormap(vidx11_display, root, visinfo->visual, AllocNone);
798 attr.event_mask = X_MASK;
799 if (vid_isfullscreen)
801 mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | CWEventMask | CWOverrideRedirect;
802 attr.override_redirect = True;
803 attr.backing_store = NotUseful;
804 attr.save_under = False;
807 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
809 win = XCreateWindow(vidx11_display, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr);
810 XStoreName(vidx11_display, win, gamename);
811 XMapWindow(vidx11_display, win);
813 // LordHavoc: making the close button on a window do the right thing
814 // seems to involve this mess, sigh...
815 wm_delete_window_atom = XInternAtom(vidx11_display, "WM_DELETE_WINDOW", false);
816 XSetWMProtocols(vidx11_display, win, &wm_delete_window_atom, 1);
818 if (vid_isfullscreen)
820 XMoveWindow(vidx11_display, win, 0, 0);
821 XRaiseWindow(vidx11_display, win);
822 XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, 0, 0);
823 XFlush(vidx11_display);
824 // Move the viewport to top left
825 XF86VidModeSetViewPort(vidx11_display, vidx11_screen, 0, 0);
828 //XSync(vidx11_display, False);
830 ctx = qglXCreateContext(vidx11_display, visinfo, NULL, True);
832 Sys_Error ("glXCreateContext failed\n");
834 if (!qglXMakeCurrent(vidx11_display, win, ctx))
835 Sys_Error ("glXMakeCurrent failed\n");
837 XSync(vidx11_display, False);
839 if ((qglGetString = GL_GetProcAddress("glGetString")) == NULL)
840 Sys_Error("glGetString not found in %s", gl_driver);
842 gl_renderer = qglGetString(GL_RENDERER);
843 gl_vendor = qglGetString(GL_VENDOR);
844 gl_version = qglGetString(GL_VERSION);
845 gl_extensions = qglGetString(GL_EXTENSIONS);
847 gl_platformextensions = qglXQueryExtensionsString(vidx11_display, vidx11_screen);
849 gl_videosyncavailable = false;
851 // COMMANDLINEOPTION: Linux GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
852 // COMMANDLINEOPTION: BSD GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
853 // COMMANDLINEOPTION: MacOSX GLX: -nogetprocaddress disables GLX_ARB_get_proc_address (not required, more formal method of getting extension functions)
854 GL_CheckExtension("GLX_ARB_get_proc_address", getprocaddressfuncs, "-nogetprocaddress", false);
855 // COMMANDLINEOPTION: Linux GLX: -novideosync disables GLX_SGI_swap_control
856 // COMMANDLINEOPTION: BSD GLX: -novideosync disables GLX_SGI_swap_control
857 // COMMANDLINEOPTION: MacOSX GLX: -novideosync disables GLX_SGI_swap_control
858 gl_videosyncavailable = GL_CheckExtension("GLX_SGI_swap_control", swapcontrolfuncs, "-novideosync", false);
860 vid_usingmouse = false;
861 vid_usingvsync = false;
863 vid_activewindow = true;
868 void Sys_SendKeyEvents(void)
877 in_mouse_x = mouse_x;
878 in_mouse_y = mouse_y;