4 a screen saver and locker for the X window system
7 http://www.jwz.org/xscreensaver/
15 The `configure' shell script will attempt to figure out which options are
16 appropriate for your system, and will create config.h and the various
17 Makefiles for you. Run `configure --help' to see how to override these
18 choices, or to specify things like the default installation directory.
19 The file `INSTALL' gives a general overview of use of these sorts of
20 configure scripts (those generated by the GNU autoconf system.)
21 The most important hint is probably this:
23 ./configure --with-motif=/opt/Motif --with-xpm=/usr/local
25 To build on VMS, see README.VMS.
27 If you think you've found a bug, please let me know! No bug report is too
28 small. But first, please read the enclosed `README.debugging' file to find
29 out what kind of information would be most helpful to include in your bug
34 You can try out xscreensaver like so:
39 The XScreenSaver suite of applications uses a client-server model:
40 The `xscreensaver' program is a daemon that runs in the background;
41 it is controlled by the foreground `xscreensaver-demo' program.
43 xscreensaver has an extensive manual -- please read it!
47 The xscreensaver daemon waits until the keyboard and mouse have been idle
48 for a period, and then runs a graphics demo chosen at random. The demo is
49 terminated as soon as there is any mouse or keyboard activity (or, in
50 locking mode, when the proper password is typed.)
52 It is trivially easy to add new display modes to xscreensaver: any program
53 which can be invoked in such a way that it draws on the root window of the
54 screen can be used as a screensaver. You just change a config file --
55 there's no need to recompile or reinstall anything.
59 Along with the xscreensaver daemon itself, this package also includes
60 numerous graphics hacks for use as screensavers. There is nothing
61 magic about these: they are just programs that draw on the root window.
62 More than 140 such programs are included. For details, see the
63 xscreensaver web page, or the enclosed manual pages.
65 The latest version of xscreensaver is always available on the web at
66 http://www.jwz.org/xscreensaver/.
68 Looking for tips on writing your own screensavers? There is an entry in
69 the XScreenSaver FAQ about that: http://www.jwz.org/xscreensaver/faq.html
73 Changes since 4.04: * More `configure' tweaks to try and get things working
74 on systems that both Gtk 1.x and 2.x installed.
75 * New hack, `endgame'.
76 * Minor updates to `gltext'.
77 Changes since 4.03: * Support for GTK 2.x / GNOME 2.x.
78 * The `configure' script will now use `pkg-config' if
79 you have it, in preference to `gtk-config', etc.
80 * New hacks, `lavalite', `queens', and `anemone'.
81 * Minor updates to `spheremonics', `gltext', `xmatrix'.
82 * You can use the mouse to manually spin most of the GL
83 hacks now (when they are displaying in a window.)
84 * Fixed a bug in `webcollage' (due to recent Alta Vista
85 url changes) that was causing it to try and load
87 * Made `xscreensaver-getimage' use gdk_pixbuf if it is
88 available: this means that those hacks that load images
89 will no longer rely on "xv", "xloadimage", etc. This
90 will close a race condition that could sometimes cause
91 your desktop background to be changed; and also makes
92 it possible for those programs to operate on image
93 files when running in windowed mode.
94 * `webcollage' can now be used in conjunction with
95 `driftnet' to display images snooped from your local
96 ethernet instead of obtained from search engines.
97 * Added man pages for all the hacks that didn't have
99 Changes since 4.02: * New hack, `spheremonics'.
100 * Minor updates to `webcollage', `cage', `moebius',
101 `morph3d', `boxed', `circuit', and `helix'.
102 * `pulsar' and `extrusion' can now load texture JPEGs.
103 * `rubik' now does non-square cubes.
104 * `fluidballs' now does various sizes of balls.
105 * `menger' and `sierpinski3d' now also show polygon
107 * `molecule' displays real subscripts in the formulae.
108 * GTK internationalization/localization support.
109 * Better detection of the various versions of libxml.
110 * Upgraded to autoconf 2.53 (from 2.13.)
111 Changes since 4.01: * Plugged a few minor leaks in `xscreensaver' and
113 * New hacks, `cubenetic' and `fluidballs'.
115 * Fixed sphere projection error in `glplanet'; installed
116 a better image of earth.
117 * Added Win2K and MacOS 1 crashes to `bsod'.
118 * Put back previous (better) version of `forest' that
119 was accidentially downgraded in the last release.
120 * New version of `bumps'.
121 * Made FPS computation in GL hacks more efficient: it
122 will influence the results less, thus resulting in
123 higher (but more accurate) reported frame rates.
124 Changes since 4.00: * New hacks: `twang', `glsnake', `boxed', `sballs',
126 * New hacks `apollonian', `euler2d', `juggle',
127 `polyominoes' and `thornbird', from xlockmore.
128 * Merged recent xlockmore changes into `ant', `braid',
129 `demon', `discrete', `drift', `fadeplot', `forest',
130 `grav', `hopalong', `ifs', `laser', `lightning',
131 `lisa', `lissie', `loop', `mountain', `penrose',
132 `rotor', `sierpinski', `slip', `sphere', `spiral',
133 `strange', and `vines'.
134 * Fixed the `gltext' bug that sometimes caused
135 horizontal lines to vanish again. This time for sure.
136 * Sped up `webcollage' by adding a C helper program to
137 replace the PPM pipeline. It also pastes images
138 semi-transparently now.
139 * Added support for the gdk_pixbuf library: if this lib
140 is available, then `blitspin', `xflame', and `flag'
141 can load GIF, JPEG, and PNG images in addition to XPM
143 * Fixed a rare race condition where the desktop-grabbing
144 hacks could sometimes leave the screen wedged, if the
145 user moved the mouse exactly when they were grabbing
146 the screen image (it would un-wedge the next time the
147 saver timed out or was activated.)
148 * Fixed incorrect colors in the screen-grabbing GL hacks
149 (`gflux' and `flipscreen3d'.)
150 * Made SIGHUP restart the daemon process (though using
151 `xscreensaver-command -restart' is still the preferred
153 * Tweaks to `xspirograph'.
154 * Minor configure and portability tweaks.
155 Changes since 3.34: * Redesigned `xscreensaver-demo' GUI: it now includes
156 small-preview and per-hack configuration dialogs.
157 * Added three new modes of operation: `One Screen Saver',
158 `Blank Screen', and `Don't Blank' (in addition to the
159 historical `Random Screen Saver').
160 * Configure now defaults to installing the hacks in
161 <prefix>/lib/xscreensaver/ instead of <prefix>/bin/.
162 (Most distros already did it this way.)
163 * New GL hacks, `menger', `engine', `flipscreen3d'.
164 * Made `sierpinski3d' be more colorful.
165 * New versions of `xmatrix' and `nerverot'.
166 * Fixed a bug in `starwars' that made the font be drawn
167 with thin lines in -root mode.
168 * Fixed a bad colormap bug in `crystal' that could make
169 *subsequent* hacks malfunction!
170 * Made `gflux' able to grab screen images (`-mode grab').
171 * Updated `webcollage' for recent search engine changes.
172 * Removed most command-line options to `xscreensaver':
173 just edit the ~/.xscreensaver file instead.
174 * Improved behavior on multi-screen and Xinerama systems:
175 the mouse now stays on the screen where the user left
176 it, and the password and splash dialogs always appear
177 on the screen that has the mouse.
178 * Made the splash dialog use more Gtk-like colors;
179 made it have only two buttons, "Settings" and "Help".
180 * Made `sonar' understand `.ssh/known_hosts2' format
181 files, and be better about stripping out illegal
183 Changes since 3.33: * Turned `memoryLimit' off by default, sigh. Apparently
184 some versions of the GL libraries (appear to) allocate
185 hundreds of megs for every GL program, so `memoryLimit'
186 was causing GL programs to malfunction or crash on
188 * Improved fading on TrueColor XFree86 4.1.x systems.
189 * New GL hack, `circuit'.
190 * Added `fuzz' mode to `decayscreen'.
191 * New version of `whirlygig'.
192 * Added links to `xplanet' and `sphereEversion'.
193 * Fixed rare race condition that could make `sonar' hang.
194 * Fixed potential crash in `speedmine'.
195 * Made `xscreensaver-demo' not crash when imageDirectory
196 was set to a non-existent directory.
197 * Made `xscreensaver-getimage-video' invoke XawTV's
198 `streamer' program better.
199 * Made `phosphor' and `starwars' deal with CR, LF,
200 or CRLF line endings.
201 * Changes for Cygwin compilation environments.
202 * Made `sonar' compile on systems that can't ping.
203 * Configure changes for HPUX 10.20.
204 * Made PAM code work on Red Had 4.2 systems.
205 * Made `xscreensaver-command -deactivate' work when the
206 saver is not active: what that does is reset the idle
207 timer, as if keyboard input had been detected. This
208 was added for the benefit of people writing DVD-playing
209 software: they can now prevent the screensaver from
210 kicking in by sending a -deactivate message once a
211 minute while the movie is playing and not paused.
212 * Various minor portability tweaks.
213 Changes since 3.32: * New hacks, `speedmine' and `whirlygig'.
214 * Sped up `pyro', made the explosions look a bit better.
215 * Added better stars to `glplanet' and `starwars'.
216 * Many internal changes to `webcollage'.
217 * Some new options to `attraction'.
218 * Minor fix to `noseguy' to avoid un-erased pixels.
219 * Rewrote the screen-eraser effects so that they complete
220 in the same amount of time regardless of how slow
221 your X server is (some of them were glacial on servers
223 * Fixed a potential free memory reference that could
224 sometimes cause a crash at startup.
225 * Possibly fixed a problem that could cause the daemon
226 to crash with an X error. I was never able to
227 reproduce this problem, but I think I might have
228 figured out what caused it.
229 * Worked around a problem that caused PAM authentication
230 to fail on some Red Hat 7.x systems.
231 * Added a `memoryLimit' parameter that controls the
232 amount of memory a graphics hack may allocate: if they
233 try to allocate more than this, malloc() will fail
234 (and they will exit or (safely) crash, rather than
235 hogging memory.) Default is 50M.
236 * Made `gnome-help-browser' be the default way to display
237 man pages in `xscreensaver-demo', if running on a
239 Changes since 3.31: * The image-manipulating hacks (`slidescreen', etc.) can
240 now operate on randomly chosen image files from disk,
241 or on frames captured from the system's video input,
242 instead of (or in addition to) manipulating images of
244 * Rewrote `vidwhacker' to use the new image-grabbing
246 * Made fading work on TrueColor XFree86 4.x systems.
247 * Fixed a subtle rendering bug in `atlantis' (the fish
249 * Made `atlantis' have a texture simulating light
250 reflections from the surface of the ocean.
251 * Fixed up label placement in `molecule'.
252 * Better color bars in `xteevee'.
253 * Made `install-strip' not try to strip scripts.
254 Changes since 3.30: * Put in more sensible defaults for DPMS, and updated
255 the documentation to reflect the fact that all your
256 DPMS settings are now belong to xscreensaver.
257 * Fixed the `xscreensaver.spec' file so that `--force'
259 * New versions of `rotzoomer' and `nerverot'.
260 * Fixed an OSF/1 compilation problem in `molecule'.
261 Changes since 3.29: * New hacks, `molecule', `dangerball', and `rotzoomer'.
262 * New version of `gflux'.
263 * Made `gltext' able to display the current time.
264 * Fixed a floating-point-precision problem in `gltext'
265 that sometimes caused horizontal lines to vanish.
266 * Removed the `-window-id' option from the hacks:
267 it never worked right, and was unnecessary.
268 * Made the `starwars' hack use thicker lines, antialias
269 the text, and fade out at the far edge instead of just
271 * Fixed an SHM segment leak in `moire'.
272 Changes since 3.28: * Better rendering of the new logo.
273 * New hack, `gltext'.
274 * Added `-planetary' option to `gears', to draw a
275 different kind of gear system.
276 * Made motion and rotation be smoother in `gears',
277 `glplanet', `moebius', `rubik', and `sierpinski3d'.
278 * Improved coloration in `sierpinski3d'.
279 * Made the GL hacks react to window size changes.
280 * Made most of the GL hacks take a -fps option (like
281 `pulsar' did), so you can use them to benchmark your
283 * Fixed the previous fix to `sonar'.
284 * Minor fix to `nerverot'.
285 Made sonar able to ping hosts on DEC OSF1.
286 * Eliminated a bogus "didn't get enough colors" warning
287 in some of the hacks.
288 Changes since 3.27: * New logo for xscreensaver!
289 * New hacks, `starwars' and `stonerview'.
290 * Made the motion of the bouncing ball in `stairs' be a
292 * Made newly-added screenhacks be added to .xscreensaver
293 automatically: if there are hacks in the app-defaults
294 file that are not also in ~/.xscreensaver, they will
295 be added to the end of the list.
296 * Redid the `Screensaver Options' part of the control
297 panel; xscreensaver now lets you configure your DPMS
299 * Fixed some Makefile problems with non-GL builds.
300 * Fixed detection of MesaGL for version 3.3.
301 * Better workaround to Red Hat 7.0's broken gcc.
302 * Added Sparc Solaris kernel panic to `bsod'.
303 Changes since 3.26: * New hacks: `zoom' and `whirlwindwarp'.
304 * Fixed a free-memory-reference bug in `sonar'.
305 * Better error handling when there are no suitable GL
307 * Added diagnostic dialog when xscreensaver-demo is
308 unable to launch xscreensaver (e.g., when running as
310 * Fixed a bug that caused screenhack argument changes
311 to be ignored when xscreensaver-demo was running as
312 root (if "root" and "nobody" have different home
314 * Made the programs default to ":0" if $DISPLAY is unset.
315 * Made the `-verbose' output include information about
316 which server extensions were supported at compile time.
317 * Worked around Red Hat 7.0's broken gcc 2.96.
318 * Updated default delays on the GL hacks to look better
319 on machines with super-fast 3D hardware.
320 * Install `screensaver-properties-capplet' to work around
321 the usual egregious GNOME lossage.
322 Changes since 3.25: * Added "enabled" checkboxes in the list of hacks in
323 xscreensaver-demo (Gtk version only.)
324 * New hacks `hyperball', `xrayswarm', and `gflux'.
325 * New versions of `nerverot', `galaxy', and `hypercube'.
326 * Small fixes to `phosphor', `shadebobs', `xflame',
328 * Added external helper program `xscreensaver-gl-helper'
329 to figure out which X visual to use for OpenGL
331 * Configure updates for XFree86 4.0, and for BSD.
332 * Made it be more tolerant of bogus /etc/group files.
333 * When installing the PAM config file, first try to just
334 copy an existing "xdm" or "login" config file, so that
335 xscreensaver does authentication in the same way as the
337 Changes since 3.24: * New hack, `nerverot'.
338 * Added BSD kernel panic to `bsod'.
339 * New version of `shadebobs'.
340 * New version of `petri'.
341 * Updated `webcollage' to handle recent Altavista URL
342 format changes; made it search the AP photo gallery.
343 * Revamped command-line options of `sonar' and made it
344 properly handle subnets.
345 * The `bubbles' hack can now trickle up or down the
347 * The `xsublim' hack can now read its text from programs.
348 * Support for GLE version 3 in `extrusion'.
349 * Fixed compilation problems in `maze'.
350 * Fixed a rare crash in `flow'.
351 * Fixes for minor installation problems.
352 Changes since 3.23: * Added `-ignorant' option to `maze' hack.
353 * Updates to `critical', `bsod', `xflame', and `flow'.
354 * Added support for Kerberos 5 (via its Kerberos 4
355 compatibility layer.)
356 * Fixed a bad leak in `xteevee'.
357 * Updated `webcollage' to handle recent Altavista URL
359 * Removed xscreensaver-demo's `Ok' and `Cancel' buttons,
360 since they were confusing people: all changes are now
362 * Made xscreensaver-demo install itself into the Gnome
364 Changes since 3.22: * Fixed some misplaced text fields in the Motif version
365 of xscreensaver-demo; fixed a crash in the Gtk version
366 that would happen if the programs list was empty.
367 * Fixed a recently-introduced bug in `pulsar'.
368 * Made `sierpinski3d' use solid tetrahedrons instead of
370 * Added `-trace' option to `xmatrix'.
371 * Added new hacks `xteevee' and `xspirograph'.
372 Changes since 3.21: * Fixed some bugs in xscreensaver-demo.
373 * Rewrote the Motif version of xscreensaver-demo to
374 match the new Gtk version.
375 * The Athena toolkit is no longer supported.
376 Changes since 3.20: * Tweaked the xscreensaver-demo UI (Gtk only.)
377 * Fixed a few visual selection bugs. I think the proper
378 GL visual should be used with nVidia systems now.
379 * Made the Makefiles obey $install_prefix.
380 * Made the `xscreensaver.spec' file able to generate both
381 GL and non-GL packages simultaneously.
382 Changes since 3.19: * Added new hacks `ripples' and `sierpinski3d'.
383 * Made `xscreensaver-command -exit' be silent when no
384 screen saver was running (instead of complaining.)
385 * Made `webcollage' and `vidwhacker' use `xloadimage'
386 when available (in addition to `xli' and `xv'.)
387 * Improved memory usage in `petri' and gave it a hard
388 cap on how much memory it can allocate.
389 * Added `-watch' option to `xscreensaver-command'.
390 * Made `xscreensaver-demo' come up with the
391 most-recently-run hack selected by default.
392 * Rewrote the Gtk version of `xscreensaver-demo'.
393 It's a lot easier to use now.
394 * Extended the format of the programs list in the
395 .xscreensaver file, for the benefit of the new
396 capabilities of `xscreensaver-demo'.
397 NOTE: you might want to delete your ~/.xscreensaver
398 file and allow it to be re-created! The old one
399 should still work, but xscreensaver-demo won't be as
401 Changes since 3.18: * Fixed gcc dependencies in `bumps' and `ccurve'.
402 * New hack, `extrusion'.
403 * Some of the web sites that `webcollage' was using as
404 its sources changed formats; tweaked it to understand
406 * Added typeahead in the password dialog: if the screen
407 is locked, and you unlock it by typing a character,
408 that key will be automatically inserted in the
409 password dialog (unless it is Return, Enter, Space,
410 or a non-printing key like Shift.)
411 * Made `xmatrix' take a `-small' option, since some
412 folks with tiny screens prefer a smaller font.
413 Changes since 3.17: * New versions of `shadebobs', `lmorph', and `distort'.
414 * Added `ccurve', `blaster', and `bumps' hacks.
415 * Replaced `forest' hack with a rewritten version.
416 * Worked around a Xinerama server bug.
417 * Fixed a bug I introduced in 3.10 that caused some
418 hacks to print out superfluous warnings about not
419 having gotten enough colors.
420 * Made `sproingies' obey the `-delay' option.
421 * Fixed a portability bug in `shadebobs'.
422 * Made `webcollage' and `vidwhacker' use `xli' in
423 preference to `xv', if it is available.
424 * Added a new source of images to `webcollage'.
425 * If running under KDE, xscreensaver will add itself to
426 KDE's list of screensavers (via xscreensaver.kss.)
427 * Improved detection of GL libraries.
428 * Made the password dialog include the date and time.
429 Changes since 3.16: * New version of `webcollage' -- deals better with
430 corrupted images, and can use an http proxy.
431 * New hack, `xsublim' (run it in the background,
432 rather than adding it to the programs list.)
433 * The xscreensaver daemon was leaking a file descriptor
434 each time you edited your .xscreensaver file. Fixed.
435 Changes since 3.15: * New version of `shadebobs'.
436 * Improved image selection in `webcollage', and sped it
438 * Made configure find the right version of perl.
439 * Rewrote the CGI part of `webcollage'.
440 * `make clean' was deleting some things it shouldn't.
441 * Fixed a typo in the default programs list.
442 Changes since 3.14: * Added `webcollage' and `shadebobs' hacks.
443 * Added a `-stdout' arg to `vidwhacker' so that it can
444 be used in a pipeline.
445 * Made `petri' use less memory.
446 Changes since 3.13: * Various improvements to the Gtk port.
447 * Turned off PAM by default on Solaris, since PAM seems
448 generally to be misconfigured out-of-the-box.
449 * Made the `--without-gtk' configure option work.
450 * Made configure check the Gtk version number, since it
452 * Fixed a bug in the code that attempted to prevent
453 changes of screen resolution while the screen is
455 * Fixed a race condition in `xscreensaver-demo' that
456 could cause an X error at startup.
457 * Added `-transparent' option to `deluxe'.
458 * Added `petri' hack.
459 Changes since 3.12: * Ported `xscreensaver-demo' to Gtk.
460 * Made it possible to build Motif, Gtk, and Athena
461 versions of `xscreensaver-demo' in the same directory
462 without reconfiguring.
463 * Made `xscreensaver-demo' chase symlinks before writing
464 the .xscreensaver file, so that if .xscreensaver is
465 itself a symlink, the underlying file will be replaced
467 * Some Makefile and configure tweaks for Solaris and
469 * Made it possible to set the fire color in `xflame'.
470 * Made transparency work in TrueColor (for `goop' and
472 * Fixed a multi-head bug introduced by the virtual
474 Changes since 3.11: * Made it so that you can't scroll the screen while the
475 lock dialog is up (with XFree86 virtual viewports.)
476 * Fixed a bug in `flag' that caused bob's chin to get cut
477 off after a few iterations.
478 Changes since 3.10: * Made `xjack' be black-on-white-ish, so that it looks
479 less like a computer screen and more like the
480 typewritten paper it's supposed to be.
481 * New version of `pulsar'.
482 * Fixed Solaris compilation problem in `phosphor'.
483 * Made xscreensaver notice XFree86's virtual root window
484 hack, so that if the X server's root window is larger
485 than the monitor's displayable resolution, the screen
486 saver will limit itself to the area that actually
487 appears on the screen.
488 * Made the xscreensaver daemon do a better job of
489 picking the visual class that should be used for GL
490 programs. Less user intervention should be needed
491 now: you can use the logical visual name `GL' instead
492 of having to figure out by hand which one to use.
493 * Oops, the visual was defaulting to "best" instead of
494 "default", because the .xscreensaver file was not being
495 loaded quite early enough.
496 * Made configure figure out how to build icmp ping
497 support into the `sonar' hack automatically.
498 * Made warnings about not being able to read shadow
499 passwords not be printed if compiled with PAM support.
500 * Improved PAM startup diagnostics.
501 * Worked around the Solaris PAM bug that was causing
502 crashes there, so now PAM is turned on by default.
503 * Made configure detect the number of arguments that
504 pam_strerror() takes, since on Linux, this apparently
505 changed between 2.0 and 2.2, sigh.
506 * Made the /proc/interrupts kludge look for "PS/2 Mouse"
507 as well as "keyboard".
508 * Made xscreensaver notice when there has been a sudden
509 large jump in wall-clock time, and if so, lock right
510 away, instead of waiting for "lockTimeout" to expire
511 first. (Laptops need this for safer recovery from
513 * Added `-throttle' option to `xscreensaver-command'.
514 Changes since 3.09: * Added `phosphor', `xmatrix', and `pulsar' hacks.
515 * Fixed a bug in the color allocator that sometimes
516 caused `starfish' to fall back to monochrome.
517 * Reduced the amount of code that runs before root
518 privileges are disavowed: "normal" and "shadow"
519 passwords now do some initialization as root, but the
520 PAM and Kerberos authorization schemes will be
521 initialized while running as "nobody". Supposedly
522 this closes a potential security hole when using
524 * Added some more sanity checking to configure.
525 Changes since 3.08: * Added `compass', `squiral', `xflame', `wander',
526 `spotlight', and `critical' hacks.
527 * Added some new modes to `decayscreen'.
528 * Made `deluxe' work in monochrome.
529 * Generalized usage of the Double-Buffer server extension
530 in several hacks (`compass', `deluxe', `interference',
531 `kumppa', and `moire2'.)
532 * Fixed another visual-depth problem in `rd-bomb'.
533 * The screen saver will now defer blanking if neither
534 the keyboard nor the mouse could be grabbed. Instead,
535 it will just try again in a few minutes. This fixes
536 a bad interaction between xscreensaver and programs
537 like VMware that hold the mouse and keyboard grabbed
539 * Added a new erase mode (expanding spiral.)
540 Changes since 3.07: * Fixed some bugs in my port of `t3d'.
541 * Added `penetrate' and `deluxe' hacks.
542 * When linking against Motif 2.x, also link against XPM.
543 * Added support for using /proc/interrupts for idle
544 detection on Linux. Now xscreensaver shouldn't kick
545 in when the user is active on a non-X virtual console.
546 * Upgraded to autoconf 2.13.
547 Changes since 3.06: * Configure tweaks (sometimes -lXmu wasn't getting linked
548 in properly; check for _Xsetlocale in -lXintl.)
549 * Portability fixes for sonar.c.
550 * Fixed a compilation problem when you have GL but don't
552 * Made configure notice when MesaGL requires -lpthread.
553 * Made `flame' ignore SIGFPE (not sure if this is the
554 right fix; it seems only to be needed on FreeBSD.)
555 * Kludged `rd-bomb' work on visuals that are of depth 24
556 but that *do not* support pixmaps of depth 32.
557 * Fixed `halo' to work properly in TrueColor.
558 * Changed `xscreensaver.spec' to install the hacks in
559 /usr/X11R6/lib/xscreensaver/ by default, since that's
560 where recent Red Hat distributions put them.
562 * Updated versions of `crystal', `hopalong', and `flow'
564 * Imported `demon' and `loop' modes from xlockmore.
565 Changes since 3.05: * Oops, the "default-n" visual descriptor was broken;
566 it was always installing a colormap if the
567 `installColormap' preference was set, meaning that
568 `xearth', `xv' and friends were using the wrong
569 colors on 8-bit systems.
570 * Turned off HAVE_PING in `sonar', since it compiles
571 on some Linux systems, but not others of similar
573 Changes since 3.04: * Fixed an off-by-1 in `distort'.
574 * Added `sonar' hack.
575 * New version of `glplanet' (with stars.)
576 * Made all hacks exit when you type `q' or `ESC' at them,
577 and made them obey the WM_DELETE_WINDOW ClientMessage.
578 * Fixed a nonfatal buffer overrun in lament (note:
579 lament still doesn't work with MesaGL 3.0: it dies in
580 lambda_textured_triangle1(), which is Mesa's bug, not
582 Changes since 3.03: * Added an `xscreensaver.spec' file, to make it easier
583 for other folks to generate RPMs.
584 * Made the password code work on HPUX in the situation
585 where: ``enhanced security'' is available; but not
586 used; but the user typed a password more than 8
587 characters long anyway. FTSOHPUX.
588 Changes since 3.02: * Made locking work when passwd aging is enabled.
589 * Added support for PAM (Pluggable Authentication
590 Modules.) It is still turned off by default, though,
591 since it doesn't seem to work on Solaris 2.6, and has
592 been behaving erratically on Red Hat 5.1.
593 * Made each possible authentication method be tried in
594 turn until one succeeds; this means that Kerberos is
595 being used, we will first check Kerberos, and if that
596 fails, will then consult the local password file.
598 * Save and restore the bits under the passwd dialog,
599 to avoid leaving a black rectangle behind when
600 unlocking is cancelled.
601 Changes since 3.01: * Not everyone has sys/select.h, sigh...
602 Changes since 3.00: * Some fixes to `reflect'.
604 * Made it log unsuccessful attempts to unlock the screen
606 * Fixed a bug where `xscreensaver-demo' could be seeing
607 a different programs list than `xscreensaver' did.
608 Changes since 2.34: * The xscreensaver daemon no longer links against Motif
609 or Athena: demo-mode and the preferences panel are no
610 longer built in to the daemon, but are now handled by
611 an external program, `xscreensaver-demo'.
612 (I decided that this, along with the recent addition
613 of the `.xscreensaver' config file, justified bumping
614 the version number to 3.00, since this is a fairly
615 major architectural change.)
616 * Lines in the `*programs' resource may now begin with
617 the character "-", meaning "don't run this hack."
618 In this way, it's possible to disable a hack without
619 throwing away the information about it (making it
620 easier to change your mind later.) Eventually the
621 preferences/demo mode GUI should represent this as a
622 checkbox or something.
623 * Fixed a short race condition where it was possible for
624 xscreensaver to die with a BadWindow error if it was
625 blanking the screen just as another window was being
627 * Made it possible to disable specific modes in `bsod'.
628 Changes since 2.33: * Fixed a bug that was making `pipes' generate way too
629 many valves. Made the viewpoint in `pipes' be selected
630 randomly instead of always being -10 degrees.
631 * Fixed a bug in the XSHM code, in the case where the
632 server supports the XSHM extension but is not the same
633 machine as the client.
634 * Made `rd-bomb' default to taking up the whole screen.
635 * Made it not try to do fading/unfading if no PseudoColor
637 * Initial attempt at supporting VT-locking (doesn't work
639 * Eliminated the `captureStdout' resource; now
640 `captureStderr' controls both streams.
641 * Added `-capture-stderr' and `-no-capture-stderr'
642 command-line arguments.
643 * Added `glplanet' hack.
644 * When a hack is selected with `xscreensaver-command
645 -select', that hack will be used until further notice
646 (until the saver turns off, or another activation
648 Changes since 2.32: * Made `xscreensaver-command' print error messages:
649 the xscreensaver daemon now responds to ClientMessage
650 events by writing a response message on a window
651 property, instead of just writing to its stderr.
652 * Made the ~/.xscreensaver file be automatically reloaded
653 when the file date changes.
654 * The password dialog and splash screen no longer depend
655 on Motif or Athena. This should clear up a number of
656 focus problems, and is the first step on the path
657 toward moving all of the Motif/Athena/whatever code
658 out of the xscreensaver daemon, and into external
660 * Don't complain about LessTif 0.86 any more, since the
661 new password dialog makes that problem go away.
662 * Configure tweaks for Irix 6.5, SunOS 5.something.
663 * New `-reflect' option to `distort'.
664 Changes since 2.31: * Added reading and writing of a ~/.xscreensaver file,
665 so that the Preferences panel can save its settings.
666 * New version of `rubik'.
667 * Added `-select N' argument to `xscreensaver-command'.
668 * Oops, left out some of the `bubbles3d' files...
669 Changes since 2.30: * The cursor was invisible in the password dialog. Fixed.
670 * Made configure warn against MesaGL 2.6.
671 * Fixed X error at startup when using non-default visual.
672 * New version of `crystal', `ant', and `atlantis' from
674 * New hack, `bubble3d'.
675 * Added some new modes to `bsod'.
676 Changes since 2.29: * Changed the order in which -lSM and -lICE are linked
677 to be after Motif instead of before (Lesstif on Irix
679 Changes since 2.28: * Work around a bash bug in configure.
680 * Tweaked HPUX paths again. FTSOHPUX.
681 * Made configure recommend against LessTif 0.86, due
682 to a bug in that version that causes a security hole
683 in the screen locking code. LessTif 0.87 will fix it.
684 * Made all of the `--with' options to `configure' accept
685 a directory option as well (so that --with-motif=/FOO
686 will add -I/FOO/include -L/FOO/lib). I believe this is
687 the Configure Party Line of how do to such things.
688 * Fixed a bug where the mouse was left un-grabbed
689 after the first time the graphics hack was changed
690 (simplified all of the mouse-grabbing logic.)
691 * Maybe possibly perhaps made `vidwhacker' really not
692 leave stray xv windows around. This time for sure.
693 * Added a new erase mode (random dots fizzling out.)
694 * Added `-prefs' argument to `xscreensaver-command',
695 that brings up the Preferences dialog directly (it
696 seems that nobody ever noticed the `Preferences' button
697 on the Demo Mode dialog, maybe this will help.)
698 * Added a splash screen. Turn it off with *splash:false.
699 Changes since 2.27: * Better macsbug text in `bsod'.
700 * New version of `distort' with many new modes.
701 * Plugged a leak in `coral'.
702 * Tweaked configure for HPUX.
703 * Removed some compiler warnings.
704 * More consistent usage of stderr versus stdout.
705 * More diagnostics should an X error occur.
706 * Fixed a possible crash in SGI-specific unfading code.
707 Changes since 2.26: * Improved version of `distort'.
708 * Made `lament' compile against OpenGL 1.0 (though it
709 still requires 1.1 to work properly.)
710 * Updated my email address and home page.
711 Changes since 2.24: * Improved motion in `rd-bomb'.
712 * Added XSHM (shared memory extension) support to the
713 `distort', `interference', `moire', `rd-bomb', and
714 `swirl' hacks, which speeds them up a bit.
715 * Added `lament' hack.
716 Changes since 2.23: * Tweaked the order of the -L options again.
717 * Cleaned up configure's `--help' message.
718 * Added `kumppa' hack.
719 * Smarter maze-solving algorithm in `maze'.
720 * Took `xlyap' out of the default list of hacks, since
721 it's just incredibly buggy (and slow.) Maybe someday
722 someone will fix it...
723 * Added `distort' hack, but didn't add it to the default
724 list (yet) because it's still too slow.
725 * Made the Athena demo dialog look more like the Motif
726 version; it has a text-entry field now, too.
727 * Made the Athena password dialog echo asterisks, like
728 Motif does, instead of using a flyspeck font.
729 * Some random configure tweaks.
730 * Added a `timestamp' resource that makes the `-verbose'
731 messages include the time at which they were printed.
732 Changes since 2.22: * The fix for SGI's ``scheme'' nonsense broke things, and
733 let the user's "*background" resource show through.
734 Fixed it in a different way.
735 Changes since 2.21: * Added support for the DPMS server extension (Display
736 Power Management System.)
737 * Made configure advertize the `--enable-subdir' option a
738 little more, since that seemed to cause some people
739 stress. Also, made that directory be built into the
740 xscreensaver executable, as a hardcoded prefix to
741 $PATH. (Might help, shouldn't hurt.)
742 * Made configure prefer the two-arg gettimeofday to the
743 one-arg version, since AIX doesn't have any prototypes.
744 * Made it work with Xaw3d (the 3D Athena library.)
745 * Made `make install' create directories as necessary.
746 * New version of lmorph from Sverre.
747 * Added `crystal' and `discreet' hacks from xlockmore.
748 * Added a new mode to `bsod'.
749 Changes since 2.20: * Made `xscreensaver-command -time' use different words.
750 (It now describes the two states as "screen blanked
751 since..." and "screen non-blanked since..." instead of
752 "active since..." and "inactive since..." which a lot
753 of people interpreted as meaning the opposite of what
755 * Improved some error messages, in the hopes of making
756 the distinction between the xscreensaver and
757 xscreensaver-command programs more obvious.
758 * Rewrote (and reorganized) parts of the xscreensaver and
759 xscreensaver-command manual pages.
760 * Renamed xscreensaver's `-lock' command-line option to
761 be `-lock-mode', to avoid confusion with the `-lock'
762 option to xscreensaver-command, which does a totally
764 * Removed xscreensaver's `-demo' command-line option for
765 a similar reason; use `xscreensaver-command -demo'
767 * Disabled SGI's ``scheme'' nonsense in a better way than
768 fully-qualifying the background colors in every single
770 * Fixed some other minor cosmetic problems when *sgiMode
772 * Fixed an X error in `bsod -root' (how ironic...)
773 Changes since 2.19: * Fixed a bug that caused the mouse to sometimes not be
774 grabbed properly (meaning the window manager menu could
775 pop up over the demo-mode display.)
776 * Fixed a bug that made the stderr output sometimes get
778 * Fixed a bug that made the demo-mode scrollbar move too
780 * Protected against a possible buffer overflow.
781 * Made `vidwhacker' not leave stray xv windows around.
782 * New version of `ant' so that Bagley doesn't calve.
783 * Make configure on AIX get XShm from the right library.
784 Changes since 2.18: * One file was missing from the tar file. Fixed.
785 Changes since 2.17: * Oops, atlantis wasn't being built by default. Fixed.
786 * Added `epicycle' hack.
787 * Added `interference' hack.
788 * Added `truchet' hack.
790 * Added some new modes to `vidwhacker'.
791 Changes since 2.16: * Added a -window-id argument to most hacks, so that they
792 can draw on arbitrary externally-provided windows.
793 * Synched with xlockmore 4.11a01.
795 * Added `atlantis' GL hack.
796 * Renamed `puzzle' hack to `jigsaw', since xlock already
797 had a different mode called `puzzle'.
798 * Made it self-configure properly when Motif 2.1.0 is
799 being used (requires -lXp now, sigh...)
800 Changes since 2.15: * Made `flag' able to do XPM images.
801 * New look for the xscreensaver logo (`xroger').
802 * Fixed compilation error on Suns with adjunct passwords.
803 * Got multi-architecture builds working again.
804 * Some configure tweaks for building on HPUX and Solaris.
805 * Fixed bug in decayscreen.
806 * Fixed typo in passwd.c.
807 * Made `cynosure' not die when colormap is full.
808 Changes since 2.14: * Added `cynosure' hack.
809 * Added `moire2' hack.
810 * Tweaked `erase.c' some more.
811 * Made unfading a bit smoother.
812 * Added `vidwhacker' hack (not installed by default.)
813 * Added `stairs' hack.
814 * Split `escher' into `cage' and `moebius', as per
816 * Changed subprocess handling to use sigaction() instead
817 of signal() if it's available (this is necessary for
818 SCO but should work fine on other systems too.)
819 * Various other tweaks.
820 Changes since 2.13: * Better fix for the Motif drag-and-die lossage.
821 * Put in some kludges to work around a LessTif bug.
822 * XScreenSaver is known to work with LessTif 0.82 now.
823 * Made fading work on high-end SGI video hardware.
824 * Fixed another SGI-specific bug in screen grabbing;
825 will the madness never cease?
826 * Fixed another crash in `xlyap'.
827 Changes since 2.12: * Made `decayscreen' do directions other than down.
829 * Fixed a crash in `xlyap'.
830 * Added CDE info to the man page, removed `cde.txt'.
831 * Configure tweaks for Zippy.
832 * Turned off the signal handling in `bubbles' because
833 it was sometimes failing to die.
834 * Added `hacks/xscreensaver-sgigl.c' to make it possible
835 to run SGI's ElectroPaint hack (/usr/demos/bin/ep)
836 with xscreensaver. Finally!
837 * Fixed a buffer overrun in the locking code that some
838 wily, malicious cracker must have slipped in.
839 * Disabled Motif drag-and-drool in the dialog box
840 buttons, since it's broken in some old versions of
842 Changes since 2.11: * Added `README.debugging'.
843 * Added `puzzle' hack.
844 * Added `xlyap' hack.
845 * Added `default-n' as a visual name, so that one can
846 have -install on by default, but turn it off for
847 certain poorly-behaved hacks (like xv.)
848 * Added support for grabbing frames of external video
849 (on SGI) to the screen-grabbing hacks (decayscreen,
850 slidescreen, slip, blitspin, and puzzle.)
851 * Improved look of tiles in `slidescreen'; fixed its
852 color allocation problem.
853 Changes since 2.10: * Tweaked `blitspin', added it to the default list.
854 * Added `lissie', `mountain', `triangle', `worm',
855 `rotor', and `ant' from xlockmore.
856 * Updated `sierpinski', `galaxy', and `lisa'.
857 * Thickened the lines in `braid' and `lmorph'.
858 * Updated VMS makefiles.
859 * Renamed `fract' to `vines'.
860 * Added `xjack' hack.
861 * Made a few more hacks use erase.c, and added a few
863 * Fixed compilation problem with Sun's version of OpenGL.
864 * Added ability to use sigaction() instead of signal()
865 to work around a SCO kernel bug.
866 Changes since 2.09: * Fixed colormap bugs in `rd-bomb'; sped up `coral'.
867 * Configure tweaks for *BSD.
868 Changes since 2.07: * New hacks `rd-bomb' and `coral'.
869 * New version of `maze' with some new algorithms.
870 * New colorized version of `rocks'.
871 * Fixed a bug in qix on 64-bit machines.
872 * Fixed a bug in the -time option.
873 * Fixed a bug in configure related to LessTif.
874 Changes since 2.06: * Minor header tweaks in windows.c and flag.c.
875 * Made multi-architecture ($VPATH) builds work properly.
876 * Merged new GL stuff from xlockmore (rubik, morph3d.)
877 * Fixed intermittent crashes in `imsmap' and `munch'.
878 * Added `fadeplot' hack from xlockmore.
879 Changes since 2.05: * Merged in VMS support from Patrick Moreau.
880 Changes since 2.04: * Fixed a MIT-SCREEN-SAVER-related crash, and tweaked
881 configure to detect the extra-random -Xss library.
882 Changes since 2.03: * HP configure tweaks. Detect and warn about LessTif.
883 * Fixed low-color behavior of `goop', `pyro', `starfish',
884 `greynetic', `flame', `halo', and `moire'.
885 Changes since 2.02: * Fixed flicker in `pipes'. Fixed 3d in `bouboule'.
886 * Added `munch' hack.
887 * Added basic dependencies to the Makefile.in files.
888 Changes since 2.01: * Fixes for compiling with the MIT saver extension.
889 * Made the yow/fortune program be a configure option.
890 * Various configure tweaks.
891 Changes since 2.00: * Added `goop' and `starfish' hacks.
892 * Added colomap cycling to `halo'.
893 * Made `attraction' use the new colormap allocator.
894 * Added better $PATH diagnostics.
895 * There was a bug in frand! Color selection should be
897 Changes since 1.34: * Converted to use `configure' instead of `imake'.
898 * ANSI C is now required.
899 * Added Kerberos locking support, from Nat Lanza.
900 * Made the stderr text use overlay planes, if possible.
901 * Reworked the xlockmore compatibility stuff again.
902 * Added `gears', `superquadrics', `escher', `pipes',
903 and `sproingies' hacks (depend on OpenGL.)
904 Changes since 1.33: * Fixed some bugs, made fading be a little smoother.
905 Changes since 1.32: * Made it work with multi-headed displays.
906 * Generalized sub-process management (Unix sucks!)
907 * Added interactive mouse frobbing to Julia.
908 * Added (untested) support for HPUX shadow passwords.
909 * Made normal non-shadow passwords be checked if the
910 shadow passwords aren't accessible for some reason.
911 Changes since 1.31: * Removed *colorPrograms and *monoPrograms resources:
912 made it possible to specify the desired visual on a
914 * Cleaned up / restructured the driver: no more globals.
915 * Made the Motif and Athena dialogs share more code.
916 * Probably fixed some Athena colormap-installation bugs.
917 * Fixed screen grabbing (cmap) on SGI 12-bit PseudoColor.
918 * Fixed divide-by-zero in bright random colormaps.
919 * Added an improved version of xlock's `flag' hack.
920 * Made unfading work better, and not flicker on SGIs.
921 * Added `sphere', `forest', `lisa' hacks from xlockmore.
922 * Added (untested) support for SunOS Adjunct passwords.
923 Changes since 1.30: * Improved colors and colormap cycling of many hacks.
924 * Cleaned up xlockmore compatibility layer.
925 * Made `blitspin' able to grab an image off the screen.
926 * Ported `swirl' and `bouboule' hacks from xlockmore.
927 * Made the driver more careful about not leaving bits on
928 the screen, or allowing other windows to raise
929 themselves: it now re-blanks the screen every so often.
930 * Added `-time' option to `xscreensaver-command'.
931 * Improved SGI screen-grabbing some more: now it can grab
932 TrueColor screens into PseudoColor windows and have the
933 colors still come out semi-reasonably.
934 Changes since 1.29: * Made `slidescreen' and `decayscreen' work better on
935 SGIs when windows of different visuals are present, by
936 using the XReadDisplay() extension to get a true 24-bit
937 image out of the frame buffer.
938 * Made `noseguy' be in color, if compiled with XPM.
939 * Ported `braid', `drift', `fract', `galaxy', `grav',
940 `ifs', `julia', `laser', `lightning', `penrose',
941 `sierpinski', `slip', `spiral', and `strange' hacks
943 * Merged `hopalong' hack with a more recent version.
945 Changes since 1.27: * Added `deco', `moire', and `kaleidescope' hacks.
946 * Merged in support for non-Motif locking and demo mode.
947 * Made `blitspin' and `bubbles' work in TrueColor.
948 * Fixed a stupid bug I introduced in `imsmap'.
949 * Added `poly' and `gravity' options to `qix'.
950 Changes since 1.26: * Added support for SGI SCREEN_SAVER extension.
951 * Made `fade' and `unfade' work on 8-bit SGIs.
952 * Made the dialog boxes more Motify.
953 * Added `bubbles' hack.
954 Changes since 1.25: * Added `lmorph' hack.
955 * Added viscosity and mouse-control to attraction.
956 * Fixed possible bad color choices in qix and attraction.
957 * Added ramp-mode to halo.
958 * Added a new RNG, which is faster and more portable
959 than using the RNG in libc.
960 * Made locking work on SCO.
961 * Various other minor tweaks that I don't remember.
962 Changes since 1.24: * Made it capture the stdout/stderr of its subprocesses
963 and present them on the screensaver window itself.
964 * Made demo mode work correctly with non-default visuals
965 and color maps, instead of always using the defaults.
966 * Added -visual argument to all included screenhacks.
967 * Support for the R6 MIT-SCREEN-SAVER server extension.
968 * Made the demo mode list scroll properly.
969 * Added `pedal' hack.
970 Changes since 1.23: * Fixed some private-colormap oddities in slidescreen,
971 decayscreen, and xroger. Fixed apparent conservation-
972 of-mass problem in pyro; made the shrapnel round.
973 Changes since 1.22: * Minor tweaks for IRIX5; fixed locking race condition.
974 Changes since 1.21: * Minor tweaks for X11R6.
975 * Fixes for non-default visuals.
976 Changes since 1.20: * Fixed bug in color blitspin; added default image.
977 * Added diagnostics to noseguy. Fixed off-by-one
978 error in flame. Added some missing casts.
979 Changes since 1.18: * Added `flame' hack.
980 * Fixed a minor Motif dialog text field bug.
981 * Fixed yet another XPointer-not-defined-in-R4 bug.
982 Changes since 1.17: * Added support for shadow password files.
983 * Fixed some Motif-related locking bugs.
984 * Added diagnostics when locking is disabled.
985 * Made blitspin able to use the XPM library.
986 * Added `decayscreen' hack.
987 Changes since 1.16: * Added `halo' hack.
988 Changes since 1.15: * Portability fixes.
989 Changes since 1.14: * Broke the driver up into more source files.
990 * Moved the hacks into their own directory.
991 * Made all `time' parameters accept the 00:00:00 syntax,
992 so that even the parameters which are normally read as
993 minutes can be specified in seconds.
994 * Added colormap cycling to `imsmap'.
995 * Made hyper work with K&R compilers.
996 Changes since 1.13: * Added `orbit' option to `attraction' hack.
997 * Added `lock-timeout' option.
998 * Cleaned up options of `maze' hack.
999 Changes since 1.8: * Added demo mode, and locking.
1000 * Added `maze' hack.
1001 * Added `norotate' option to `rocks' hack.
1002 Changes since 1.4: * Works when run from XDM before anyone logs in.
1004 * Can use `xv' as a slideshow without using up colormap
1005 entries while the screen is not blanked.
1006 * Fixed a BadDrawable error in non-XIdle mode.
1007 * Added `blitspin' and `imsmap'.
1008 Changes since 1.0: * Current list of included hacks is now: qix, helix,
1009 rorschach, attraction, greynetic, rocks, pyro,
1010 hopalong, and noseguy.