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 4.05: * New hack, `glblur' (disabled by default, since it
74 requires fast OpenGL texture support.)
75 * New hack, `halftone'.
76 * Updates to `endgame', `queens', `bumps', `glplanet',
77 `engine', and `circuit'.
78 * New version of `menger' that uses far fewer polygons.
79 * Fixed minor bug in `critical' that could cause some
80 bogus X servers to crash.
81 * Better labels in `molecule': the labels now appear to
82 be attached to the atoms, instead of floating in front
84 * Fixed bug that could rarely cause GL hacks to fail to
85 double-buffer (causing intermittent flickering.)
86 * Fixed a relative-URL-parsing bug in `webcollage'.
87 * Fixed a bug that (sometimes) caused the window manager
88 close box to kill `xscreensaver-demo' with a crash
89 instead of a graceful exit.
90 * Updated xscreensaver.pam to the Red Hat 7.3 way.
91 * More Gnome2-related configure crap.
92 * Updated to latest `config.guess' and `config.sub'.
93 * Fixed occasional core dump in `distort'.
94 * Added a Linux fsck failure and kernel panic to `bsod'.
95 * Added MacOS X kernel panic to `bsod'.
96 * Fixed a bug in `bsod' (all bsod bugs are ironic.)
97 * Fixed a bug that caused `xscreensaver-gl-helper' to
98 print a nonsense visual ID with some versions of
99 `printf': this could cause GL programs to display
100 incorrectly (e.g., flickery.)
101 Changes since 4.04: * More `configure' tweaks to try and get things working
102 on systems that both Gtk 1.x and 2.x installed.
103 * New hack, `endgame'.
104 * Minor updates to `gltext'.
105 Changes since 4.03: * Support for GTK 2.x / GNOME 2.x.
106 * The `configure' script will now use `pkg-config' if
107 you have it, in preference to `gtk-config', etc.
108 * New hacks, `lavalite', `queens', and `anemone'.
109 * Minor updates to `spheremonics', `gltext', `xmatrix'.
110 * You can use the mouse to manually spin most of the GL
111 hacks now (when they are displaying in a window.)
112 * Fixed a bug in `webcollage' (due to recent Alta Vista
113 url changes) that was causing it to try and load
114 incorrect image URLs.
115 * Made `xscreensaver-getimage' use gdk_pixbuf if it is
116 available: this means that those hacks that load images
117 will no longer rely on "xv", "xloadimage", etc. This
118 will close a race condition that could sometimes cause
119 your desktop background to be changed; and also makes
120 it possible for those programs to operate on image
121 files when running in windowed mode.
122 * `webcollage' can now be used in conjunction with
123 `driftnet' to display images snooped from your local
124 ethernet instead of obtained from search engines.
125 * Added man pages for all the hacks that didn't have
127 Changes since 4.02: * New hack, `spheremonics'.
128 * Minor updates to `webcollage', `cage', `moebius',
129 `morph3d', `boxed', `circuit', and `helix'.
130 * `pulsar' and `extrusion' can now load texture JPEGs.
131 * `rubik' now does non-square cubes.
132 * `fluidballs' now does various sizes of balls.
133 * `menger' and `sierpinski3d' now also show polygon
135 * `molecule' displays real subscripts in the formulae.
136 * GTK internationalization/localization support.
137 * Better detection of the various versions of libxml.
138 * Upgraded to autoconf 2.53 (from 2.13.)
139 Changes since 4.01: * Plugged a few minor leaks in `xscreensaver' and
141 * New hacks, `cubenetic' and `fluidballs'.
143 * Fixed sphere projection error in `glplanet'; installed
144 a better image of earth.
145 * Added Win2K and MacOS 1 crashes to `bsod'.
146 * Put back previous (better) version of `forest' that
147 was accidentially downgraded in the last release.
148 * New version of `bumps'.
149 * Made FPS computation in GL hacks more efficient: it
150 will influence the results less, thus resulting in
151 higher (but more accurate) reported frame rates.
152 Changes since 4.00: * New hacks: `twang', `glsnake', `boxed', `sballs',
154 * New hacks `apollonian', `euler2d', `juggle',
155 `polyominoes' and `thornbird', from xlockmore.
156 * Merged recent xlockmore changes into `ant', `braid',
157 `demon', `discrete', `drift', `fadeplot', `forest',
158 `grav', `hopalong', `ifs', `laser', `lightning',
159 `lisa', `lissie', `loop', `mountain', `penrose',
160 `rotor', `sierpinski', `slip', `sphere', `spiral',
161 `strange', and `vines'.
162 * Fixed the `gltext' bug that sometimes caused
163 horizontal lines to vanish again. This time for sure.
164 * Sped up `webcollage' by adding a C helper program to
165 replace the PPM pipeline. It also pastes images
166 semi-transparently now.
167 * Added support for the gdk_pixbuf library: if this lib
168 is available, then `blitspin', `xflame', and `flag'
169 can load GIF, JPEG, and PNG images in addition to XPM
171 * Fixed a rare race condition where the desktop-grabbing
172 hacks could sometimes leave the screen wedged, if the
173 user moved the mouse exactly when they were grabbing
174 the screen image (it would un-wedge the next time the
175 saver timed out or was activated.)
176 * Fixed incorrect colors in the screen-grabbing GL hacks
177 (`gflux' and `flipscreen3d'.)
178 * Made SIGHUP restart the daemon process (though using
179 `xscreensaver-command -restart' is still the preferred
181 * Tweaks to `xspirograph'.
182 * Minor configure and portability tweaks.
183 Changes since 3.34: * Redesigned `xscreensaver-demo' GUI: it now includes
184 small-preview and per-hack configuration dialogs.
185 * Added three new modes of operation: `One Screen Saver',
186 `Blank Screen', and `Don't Blank' (in addition to the
187 historical `Random Screen Saver').
188 * Configure now defaults to installing the hacks in
189 <prefix>/lib/xscreensaver/ instead of <prefix>/bin/.
190 (Most distros already did it this way.)
191 * New GL hacks, `menger', `engine', `flipscreen3d'.
192 * Made `sierpinski3d' be more colorful.
193 * New versions of `xmatrix' and `nerverot'.
194 * Fixed a bug in `starwars' that made the font be drawn
195 with thin lines in -root mode.
196 * Fixed a bad colormap bug in `crystal' that could make
197 *subsequent* hacks malfunction!
198 * Made `gflux' able to grab screen images (`-mode grab').
199 * Updated `webcollage' for recent search engine changes.
200 * Removed most command-line options to `xscreensaver':
201 just edit the ~/.xscreensaver file instead.
202 * Improved behavior on multi-screen and Xinerama systems:
203 the mouse now stays on the screen where the user left
204 it, and the password and splash dialogs always appear
205 on the screen that has the mouse.
206 * Made the splash dialog use more Gtk-like colors;
207 made it have only two buttons, "Settings" and "Help".
208 * Made `sonar' understand `.ssh/known_hosts2' format
209 files, and be better about stripping out illegal
211 Changes since 3.33: * Turned `memoryLimit' off by default, sigh. Apparently
212 some versions of the GL libraries (appear to) allocate
213 hundreds of megs for every GL program, so `memoryLimit'
214 was causing GL programs to malfunction or crash on
216 * Improved fading on TrueColor XFree86 4.1.x systems.
217 * New GL hack, `circuit'.
218 * Added `fuzz' mode to `decayscreen'.
219 * New version of `whirlygig'.
220 * Added links to `xplanet' and `sphereEversion'.
221 * Fixed rare race condition that could make `sonar' hang.
222 * Fixed potential crash in `speedmine'.
223 * Made `xscreensaver-demo' not crash when imageDirectory
224 was set to a non-existent directory.
225 * Made `xscreensaver-getimage-video' invoke XawTV's
226 `streamer' program better.
227 * Made `phosphor' and `starwars' deal with CR, LF,
228 or CRLF line endings.
229 * Changes for Cygwin compilation environments.
230 * Made `sonar' compile on systems that can't ping.
231 * Configure changes for HPUX 10.20.
232 * Made PAM code work on Red Had 4.2 systems.
233 * Made `xscreensaver-command -deactivate' work when the
234 saver is not active: what that does is reset the idle
235 timer, as if keyboard input had been detected. This
236 was added for the benefit of people writing DVD-playing
237 software: they can now prevent the screensaver from
238 kicking in by sending a -deactivate message once a
239 minute while the movie is playing and not paused.
240 * Various minor portability tweaks.
241 Changes since 3.32: * New hacks, `speedmine' and `whirlygig'.
242 * Sped up `pyro', made the explosions look a bit better.
243 * Added better stars to `glplanet' and `starwars'.
244 * Many internal changes to `webcollage'.
245 * Some new options to `attraction'.
246 * Minor fix to `noseguy' to avoid un-erased pixels.
247 * Rewrote the screen-eraser effects so that they complete
248 in the same amount of time regardless of how slow
249 your X server is (some of them were glacial on servers
251 * Fixed a potential free memory reference that could
252 sometimes cause a crash at startup.
253 * Possibly fixed a problem that could cause the daemon
254 to crash with an X error. I was never able to
255 reproduce this problem, but I think I might have
256 figured out what caused it.
257 * Worked around a problem that caused PAM authentication
258 to fail on some Red Hat 7.x systems.
259 * Added a `memoryLimit' parameter that controls the
260 amount of memory a graphics hack may allocate: if they
261 try to allocate more than this, malloc() will fail
262 (and they will exit or (safely) crash, rather than
263 hogging memory.) Default is 50M.
264 * Made `gnome-help-browser' be the default way to display
265 man pages in `xscreensaver-demo', if running on a
267 Changes since 3.31: * The image-manipulating hacks (`slidescreen', etc.) can
268 now operate on randomly chosen image files from disk,
269 or on frames captured from the system's video input,
270 instead of (or in addition to) manipulating images of
272 * Rewrote `vidwhacker' to use the new image-grabbing
274 * Made fading work on TrueColor XFree86 4.x systems.
275 * Fixed a subtle rendering bug in `atlantis' (the fish
277 * Made `atlantis' have a texture simulating light
278 reflections from the surface of the ocean.
279 * Fixed up label placement in `molecule'.
280 * Better color bars in `xteevee'.
281 * Made `install-strip' not try to strip scripts.
282 Changes since 3.30: * Put in more sensible defaults for DPMS, and updated
283 the documentation to reflect the fact that all your
284 DPMS settings are now belong to xscreensaver.
285 * Fixed the `xscreensaver.spec' file so that `--force'
287 * New versions of `rotzoomer' and `nerverot'.
288 * Fixed an OSF/1 compilation problem in `molecule'.
289 Changes since 3.29: * New hacks, `molecule', `dangerball', and `rotzoomer'.
290 * New version of `gflux'.
291 * Made `gltext' able to display the current time.
292 * Fixed a floating-point-precision problem in `gltext'
293 that sometimes caused horizontal lines to vanish.
294 * Removed the `-window-id' option from the hacks:
295 it never worked right, and was unnecessary.
296 * Made the `starwars' hack use thicker lines, antialias
297 the text, and fade out at the far edge instead of just
299 * Fixed an SHM segment leak in `moire'.
300 Changes since 3.28: * Better rendering of the new logo.
301 * New hack, `gltext'.
302 * Added `-planetary' option to `gears', to draw a
303 different kind of gear system.
304 * Made motion and rotation be smoother in `gears',
305 `glplanet', `moebius', `rubik', and `sierpinski3d'.
306 * Improved coloration in `sierpinski3d'.
307 * Made the GL hacks react to window size changes.
308 * Made most of the GL hacks take a -fps option (like
309 `pulsar' did), so you can use them to benchmark your
311 * Fixed the previous fix to `sonar'.
312 * Minor fix to `nerverot'.
313 Made sonar able to ping hosts on DEC OSF1.
314 * Eliminated a bogus "didn't get enough colors" warning
315 in some of the hacks.
316 Changes since 3.27: * New logo for xscreensaver!
317 * New hacks, `starwars' and `stonerview'.
318 * Made the motion of the bouncing ball in `stairs' be a
320 * Made newly-added screenhacks be added to .xscreensaver
321 automatically: if there are hacks in the app-defaults
322 file that are not also in ~/.xscreensaver, they will
323 be added to the end of the list.
324 * Redid the `Screensaver Options' part of the control
325 panel; xscreensaver now lets you configure your DPMS
327 * Fixed some Makefile problems with non-GL builds.
328 * Fixed detection of MesaGL for version 3.3.
329 * Better workaround to Red Hat 7.0's broken gcc.
330 * Added Sparc Solaris kernel panic to `bsod'.
331 Changes since 3.26: * New hacks: `zoom' and `whirlwindwarp'.
332 * Fixed a free-memory-reference bug in `sonar'.
333 * Better error handling when there are no suitable GL
335 * Added diagnostic dialog when xscreensaver-demo is
336 unable to launch xscreensaver (e.g., when running as
338 * Fixed a bug that caused screenhack argument changes
339 to be ignored when xscreensaver-demo was running as
340 root (if "root" and "nobody" have different home
342 * Made the programs default to ":0" if $DISPLAY is unset.
343 * Made the `-verbose' output include information about
344 which server extensions were supported at compile time.
345 * Worked around Red Hat 7.0's broken gcc 2.96.
346 * Updated default delays on the GL hacks to look better
347 on machines with super-fast 3D hardware.
348 * Install `screensaver-properties-capplet' to work around
349 the usual egregious GNOME lossage.
350 Changes since 3.25: * Added "enabled" checkboxes in the list of hacks in
351 xscreensaver-demo (Gtk version only.)
352 * New hacks `hyperball', `xrayswarm', and `gflux'.
353 * New versions of `nerverot', `galaxy', and `hypercube'.
354 * Small fixes to `phosphor', `shadebobs', `xflame',
356 * Added external helper program `xscreensaver-gl-helper'
357 to figure out which X visual to use for OpenGL
359 * Configure updates for XFree86 4.0, and for BSD.
360 * Made it be more tolerant of bogus /etc/group files.
361 * When installing the PAM config file, first try to just
362 copy an existing "xdm" or "login" config file, so that
363 xscreensaver does authentication in the same way as the
365 Changes since 3.24: * New hack, `nerverot'.
366 * Added BSD kernel panic to `bsod'.
367 * New version of `shadebobs'.
368 * New version of `petri'.
369 * Updated `webcollage' to handle recent Altavista URL
370 format changes; made it search the AP photo gallery.
371 * Revamped command-line options of `sonar' and made it
372 properly handle subnets.
373 * The `bubbles' hack can now trickle up or down the
375 * The `xsublim' hack can now read its text from programs.
376 * Support for GLE version 3 in `extrusion'.
377 * Fixed compilation problems in `maze'.
378 * Fixed a rare crash in `flow'.
379 * Fixes for minor installation problems.
380 Changes since 3.23: * Added `-ignorant' option to `maze' hack.
381 * Updates to `critical', `bsod', `xflame', and `flow'.
382 * Added support for Kerberos 5 (via its Kerberos 4
383 compatibility layer.)
384 * Fixed a bad leak in `xteevee'.
385 * Updated `webcollage' to handle recent Altavista URL
387 * Removed xscreensaver-demo's `Ok' and `Cancel' buttons,
388 since they were confusing people: all changes are now
390 * Made xscreensaver-demo install itself into the Gnome
392 Changes since 3.22: * Fixed some misplaced text fields in the Motif version
393 of xscreensaver-demo; fixed a crash in the Gtk version
394 that would happen if the programs list was empty.
395 * Fixed a recently-introduced bug in `pulsar'.
396 * Made `sierpinski3d' use solid tetrahedrons instead of
398 * Added `-trace' option to `xmatrix'.
399 * Added new hacks `xteevee' and `xspirograph'.
400 Changes since 3.21: * Fixed some bugs in xscreensaver-demo.
401 * Rewrote the Motif version of xscreensaver-demo to
402 match the new Gtk version.
403 * The Athena toolkit is no longer supported.
404 Changes since 3.20: * Tweaked the xscreensaver-demo UI (Gtk only.)
405 * Fixed a few visual selection bugs. I think the proper
406 GL visual should be used with nVidia systems now.
407 * Made the Makefiles obey $install_prefix.
408 * Made the `xscreensaver.spec' file able to generate both
409 GL and non-GL packages simultaneously.
410 Changes since 3.19: * Added new hacks `ripples' and `sierpinski3d'.
411 * Made `xscreensaver-command -exit' be silent when no
412 screen saver was running (instead of complaining.)
413 * Made `webcollage' and `vidwhacker' use `xloadimage'
414 when available (in addition to `xli' and `xv'.)
415 * Improved memory usage in `petri' and gave it a hard
416 cap on how much memory it can allocate.
417 * Added `-watch' option to `xscreensaver-command'.
418 * Made `xscreensaver-demo' come up with the
419 most-recently-run hack selected by default.
420 * Rewrote the Gtk version of `xscreensaver-demo'.
421 It's a lot easier to use now.
422 * Extended the format of the programs list in the
423 .xscreensaver file, for the benefit of the new
424 capabilities of `xscreensaver-demo'.
425 NOTE: you might want to delete your ~/.xscreensaver
426 file and allow it to be re-created! The old one
427 should still work, but xscreensaver-demo won't be as
429 Changes since 3.18: * Fixed gcc dependencies in `bumps' and `ccurve'.
430 * New hack, `extrusion'.
431 * Some of the web sites that `webcollage' was using as
432 its sources changed formats; tweaked it to understand
434 * Added typeahead in the password dialog: if the screen
435 is locked, and you unlock it by typing a character,
436 that key will be automatically inserted in the
437 password dialog (unless it is Return, Enter, Space,
438 or a non-printing key like Shift.)
439 * Made `xmatrix' take a `-small' option, since some
440 folks with tiny screens prefer a smaller font.
441 Changes since 3.17: * New versions of `shadebobs', `lmorph', and `distort'.
442 * Added `ccurve', `blaster', and `bumps' hacks.
443 * Replaced `forest' hack with a rewritten version.
444 * Worked around a Xinerama server bug.
445 * Fixed a bug I introduced in 3.10 that caused some
446 hacks to print out superfluous warnings about not
447 having gotten enough colors.
448 * Made `sproingies' obey the `-delay' option.
449 * Fixed a portability bug in `shadebobs'.
450 * Made `webcollage' and `vidwhacker' use `xli' in
451 preference to `xv', if it is available.
452 * Added a new source of images to `webcollage'.
453 * If running under KDE, xscreensaver will add itself to
454 KDE's list of screensavers (via xscreensaver.kss.)
455 * Improved detection of GL libraries.
456 * Made the password dialog include the date and time.
457 Changes since 3.16: * New version of `webcollage' -- deals better with
458 corrupted images, and can use an http proxy.
459 * New hack, `xsublim' (run it in the background,
460 rather than adding it to the programs list.)
461 * The xscreensaver daemon was leaking a file descriptor
462 each time you edited your .xscreensaver file. Fixed.
463 Changes since 3.15: * New version of `shadebobs'.
464 * Improved image selection in `webcollage', and sped it
466 * Made configure find the right version of perl.
467 * Rewrote the CGI part of `webcollage'.
468 * `make clean' was deleting some things it shouldn't.
469 * Fixed a typo in the default programs list.
470 Changes since 3.14: * Added `webcollage' and `shadebobs' hacks.
471 * Added a `-stdout' arg to `vidwhacker' so that it can
472 be used in a pipeline.
473 * Made `petri' use less memory.
474 Changes since 3.13: * Various improvements to the Gtk port.
475 * Turned off PAM by default on Solaris, since PAM seems
476 generally to be misconfigured out-of-the-box.
477 * Made the `--without-gtk' configure option work.
478 * Made configure check the Gtk version number, since it
480 * Fixed a bug in the code that attempted to prevent
481 changes of screen resolution while the screen is
483 * Fixed a race condition in `xscreensaver-demo' that
484 could cause an X error at startup.
485 * Added `-transparent' option to `deluxe'.
486 * Added `petri' hack.
487 Changes since 3.12: * Ported `xscreensaver-demo' to Gtk.
488 * Made it possible to build Motif, Gtk, and Athena
489 versions of `xscreensaver-demo' in the same directory
490 without reconfiguring.
491 * Made `xscreensaver-demo' chase symlinks before writing
492 the .xscreensaver file, so that if .xscreensaver is
493 itself a symlink, the underlying file will be replaced
495 * Some Makefile and configure tweaks for Solaris and
497 * Made it possible to set the fire color in `xflame'.
498 * Made transparency work in TrueColor (for `goop' and
500 * Fixed a multi-head bug introduced by the virtual
502 Changes since 3.11: * Made it so that you can't scroll the screen while the
503 lock dialog is up (with XFree86 virtual viewports.)
504 * Fixed a bug in `flag' that caused bob's chin to get cut
505 off after a few iterations.
506 Changes since 3.10: * Made `xjack' be black-on-white-ish, so that it looks
507 less like a computer screen and more like the
508 typewritten paper it's supposed to be.
509 * New version of `pulsar'.
510 * Fixed Solaris compilation problem in `phosphor'.
511 * Made xscreensaver notice XFree86's virtual root window
512 hack, so that if the X server's root window is larger
513 than the monitor's displayable resolution, the screen
514 saver will limit itself to the area that actually
515 appears on the screen.
516 * Made the xscreensaver daemon do a better job of
517 picking the visual class that should be used for GL
518 programs. Less user intervention should be needed
519 now: you can use the logical visual name `GL' instead
520 of having to figure out by hand which one to use.
521 * Oops, the visual was defaulting to "best" instead of
522 "default", because the .xscreensaver file was not being
523 loaded quite early enough.
524 * Made configure figure out how to build icmp ping
525 support into the `sonar' hack automatically.
526 * Made warnings about not being able to read shadow
527 passwords not be printed if compiled with PAM support.
528 * Improved PAM startup diagnostics.
529 * Worked around the Solaris PAM bug that was causing
530 crashes there, so now PAM is turned on by default.
531 * Made configure detect the number of arguments that
532 pam_strerror() takes, since on Linux, this apparently
533 changed between 2.0 and 2.2, sigh.
534 * Made the /proc/interrupts kludge look for "PS/2 Mouse"
535 as well as "keyboard".
536 * Made xscreensaver notice when there has been a sudden
537 large jump in wall-clock time, and if so, lock right
538 away, instead of waiting for "lockTimeout" to expire
539 first. (Laptops need this for safer recovery from
541 * Added `-throttle' option to `xscreensaver-command'.
542 Changes since 3.09: * Added `phosphor', `xmatrix', and `pulsar' hacks.
543 * Fixed a bug in the color allocator that sometimes
544 caused `starfish' to fall back to monochrome.
545 * Reduced the amount of code that runs before root
546 privileges are disavowed: "normal" and "shadow"
547 passwords now do some initialization as root, but the
548 PAM and Kerberos authorization schemes will be
549 initialized while running as "nobody". Supposedly
550 this closes a potential security hole when using
552 * Added some more sanity checking to configure.
553 Changes since 3.08: * Added `compass', `squiral', `xflame', `wander',
554 `spotlight', and `critical' hacks.
555 * Added some new modes to `decayscreen'.
556 * Made `deluxe' work in monochrome.
557 * Generalized usage of the Double-Buffer server extension
558 in several hacks (`compass', `deluxe', `interference',
559 `kumppa', and `moire2'.)
560 * Fixed another visual-depth problem in `rd-bomb'.
561 * The screen saver will now defer blanking if neither
562 the keyboard nor the mouse could be grabbed. Instead,
563 it will just try again in a few minutes. This fixes
564 a bad interaction between xscreensaver and programs
565 like VMware that hold the mouse and keyboard grabbed
567 * Added a new erase mode (expanding spiral.)
568 Changes since 3.07: * Fixed some bugs in my port of `t3d'.
569 * Added `penetrate' and `deluxe' hacks.
570 * When linking against Motif 2.x, also link against XPM.
571 * Added support for using /proc/interrupts for idle
572 detection on Linux. Now xscreensaver shouldn't kick
573 in when the user is active on a non-X virtual console.
574 * Upgraded to autoconf 2.13.
575 Changes since 3.06: * Configure tweaks (sometimes -lXmu wasn't getting linked
576 in properly; check for _Xsetlocale in -lXintl.)
577 * Portability fixes for sonar.c.
578 * Fixed a compilation problem when you have GL but don't
580 * Made configure notice when MesaGL requires -lpthread.
581 * Made `flame' ignore SIGFPE (not sure if this is the
582 right fix; it seems only to be needed on FreeBSD.)
583 * Kludged `rd-bomb' work on visuals that are of depth 24
584 but that *do not* support pixmaps of depth 32.
585 * Fixed `halo' to work properly in TrueColor.
586 * Changed `xscreensaver.spec' to install the hacks in
587 /usr/X11R6/lib/xscreensaver/ by default, since that's
588 where recent Red Hat distributions put them.
590 * Updated versions of `crystal', `hopalong', and `flow'
592 * Imported `demon' and `loop' modes from xlockmore.
593 Changes since 3.05: * Oops, the "default-n" visual descriptor was broken;
594 it was always installing a colormap if the
595 `installColormap' preference was set, meaning that
596 `xearth', `xv' and friends were using the wrong
597 colors on 8-bit systems.
598 * Turned off HAVE_PING in `sonar', since it compiles
599 on some Linux systems, but not others of similar
601 Changes since 3.04: * Fixed an off-by-1 in `distort'.
602 * Added `sonar' hack.
603 * New version of `glplanet' (with stars.)
604 * Made all hacks exit when you type `q' or `ESC' at them,
605 and made them obey the WM_DELETE_WINDOW ClientMessage.
606 * Fixed a nonfatal buffer overrun in lament (note:
607 lament still doesn't work with MesaGL 3.0: it dies in
608 lambda_textured_triangle1(), which is Mesa's bug, not
610 Changes since 3.03: * Added an `xscreensaver.spec' file, to make it easier
611 for other folks to generate RPMs.
612 * Made the password code work on HPUX in the situation
613 where: ``enhanced security'' is available; but not
614 used; but the user typed a password more than 8
615 characters long anyway. FTSOHPUX.
616 Changes since 3.02: * Made locking work when passwd aging is enabled.
617 * Added support for PAM (Pluggable Authentication
618 Modules.) It is still turned off by default, though,
619 since it doesn't seem to work on Solaris 2.6, and has
620 been behaving erratically on Red Hat 5.1.
621 * Made each possible authentication method be tried in
622 turn until one succeeds; this means that Kerberos is
623 being used, we will first check Kerberos, and if that
624 fails, will then consult the local password file.
626 * Save and restore the bits under the passwd dialog,
627 to avoid leaving a black rectangle behind when
628 unlocking is cancelled.
629 Changes since 3.01: * Not everyone has sys/select.h, sigh...
630 Changes since 3.00: * Some fixes to `reflect'.
632 * Made it log unsuccessful attempts to unlock the screen
634 * Fixed a bug where `xscreensaver-demo' could be seeing
635 a different programs list than `xscreensaver' did.
636 Changes since 2.34: * The xscreensaver daemon no longer links against Motif
637 or Athena: demo-mode and the preferences panel are no
638 longer built in to the daemon, but are now handled by
639 an external program, `xscreensaver-demo'.
640 (I decided that this, along with the recent addition
641 of the `.xscreensaver' config file, justified bumping
642 the version number to 3.00, since this is a fairly
643 major architectural change.)
644 * Lines in the `*programs' resource may now begin with
645 the character "-", meaning "don't run this hack."
646 In this way, it's possible to disable a hack without
647 throwing away the information about it (making it
648 easier to change your mind later.) Eventually the
649 preferences/demo mode GUI should represent this as a
650 checkbox or something.
651 * Fixed a short race condition where it was possible for
652 xscreensaver to die with a BadWindow error if it was
653 blanking the screen just as another window was being
655 * Made it possible to disable specific modes in `bsod'.
656 Changes since 2.33: * Fixed a bug that was making `pipes' generate way too
657 many valves. Made the viewpoint in `pipes' be selected
658 randomly instead of always being -10 degrees.
659 * Fixed a bug in the XSHM code, in the case where the
660 server supports the XSHM extension but is not the same
661 machine as the client.
662 * Made `rd-bomb' default to taking up the whole screen.
663 * Made it not try to do fading/unfading if no PseudoColor
665 * Initial attempt at supporting VT-locking (doesn't work
667 * Eliminated the `captureStdout' resource; now
668 `captureStderr' controls both streams.
669 * Added `-capture-stderr' and `-no-capture-stderr'
670 command-line arguments.
671 * Added `glplanet' hack.
672 * When a hack is selected with `xscreensaver-command
673 -select', that hack will be used until further notice
674 (until the saver turns off, or another activation
676 Changes since 2.32: * Made `xscreensaver-command' print error messages:
677 the xscreensaver daemon now responds to ClientMessage
678 events by writing a response message on a window
679 property, instead of just writing to its stderr.
680 * Made the ~/.xscreensaver file be automatically reloaded
681 when the file date changes.
682 * The password dialog and splash screen no longer depend
683 on Motif or Athena. This should clear up a number of
684 focus problems, and is the first step on the path
685 toward moving all of the Motif/Athena/whatever code
686 out of the xscreensaver daemon, and into external
688 * Don't complain about LessTif 0.86 any more, since the
689 new password dialog makes that problem go away.
690 * Configure tweaks for Irix 6.5, SunOS 5.something.
691 * New `-reflect' option to `distort'.
692 Changes since 2.31: * Added reading and writing of a ~/.xscreensaver file,
693 so that the Preferences panel can save its settings.
694 * New version of `rubik'.
695 * Added `-select N' argument to `xscreensaver-command'.
696 * Oops, left out some of the `bubbles3d' files...
697 Changes since 2.30: * The cursor was invisible in the password dialog. Fixed.
698 * Made configure warn against MesaGL 2.6.
699 * Fixed X error at startup when using non-default visual.
700 * New version of `crystal', `ant', and `atlantis' from
702 * New hack, `bubble3d'.
703 * Added some new modes to `bsod'.
704 Changes since 2.29: * Changed the order in which -lSM and -lICE are linked
705 to be after Motif instead of before (Lesstif on Irix
707 Changes since 2.28: * Work around a bash bug in configure.
708 * Tweaked HPUX paths again. FTSOHPUX.
709 * Made configure recommend against LessTif 0.86, due
710 to a bug in that version that causes a security hole
711 in the screen locking code. LessTif 0.87 will fix it.
712 * Made all of the `--with' options to `configure' accept
713 a directory option as well (so that --with-motif=/FOO
714 will add -I/FOO/include -L/FOO/lib). I believe this is
715 the Configure Party Line of how do to such things.
716 * Fixed a bug where the mouse was left un-grabbed
717 after the first time the graphics hack was changed
718 (simplified all of the mouse-grabbing logic.)
719 * Maybe possibly perhaps made `vidwhacker' really not
720 leave stray xv windows around. This time for sure.
721 * Added a new erase mode (random dots fizzling out.)
722 * Added `-prefs' argument to `xscreensaver-command',
723 that brings up the Preferences dialog directly (it
724 seems that nobody ever noticed the `Preferences' button
725 on the Demo Mode dialog, maybe this will help.)
726 * Added a splash screen. Turn it off with *splash:false.
727 Changes since 2.27: * Better macsbug text in `bsod'.
728 * New version of `distort' with many new modes.
729 * Plugged a leak in `coral'.
730 * Tweaked configure for HPUX.
731 * Removed some compiler warnings.
732 * More consistent usage of stderr versus stdout.
733 * More diagnostics should an X error occur.
734 * Fixed a possible crash in SGI-specific unfading code.
735 Changes since 2.26: * Improved version of `distort'.
736 * Made `lament' compile against OpenGL 1.0 (though it
737 still requires 1.1 to work properly.)
738 * Updated my email address and home page.
739 Changes since 2.24: * Improved motion in `rd-bomb'.
740 * Added XSHM (shared memory extension) support to the
741 `distort', `interference', `moire', `rd-bomb', and
742 `swirl' hacks, which speeds them up a bit.
743 * Added `lament' hack.
744 Changes since 2.23: * Tweaked the order of the -L options again.
745 * Cleaned up configure's `--help' message.
746 * Added `kumppa' hack.
747 * Smarter maze-solving algorithm in `maze'.
748 * Took `xlyap' out of the default list of hacks, since
749 it's just incredibly buggy (and slow.) Maybe someday
750 someone will fix it...
751 * Added `distort' hack, but didn't add it to the default
752 list (yet) because it's still too slow.
753 * Made the Athena demo dialog look more like the Motif
754 version; it has a text-entry field now, too.
755 * Made the Athena password dialog echo asterisks, like
756 Motif does, instead of using a flyspeck font.
757 * Some random configure tweaks.
758 * Added a `timestamp' resource that makes the `-verbose'
759 messages include the time at which they were printed.
760 Changes since 2.22: * The fix for SGI's ``scheme'' nonsense broke things, and
761 let the user's "*background" resource show through.
762 Fixed it in a different way.
763 Changes since 2.21: * Added support for the DPMS server extension (Display
764 Power Management System.)
765 * Made configure advertize the `--enable-subdir' option a
766 little more, since that seemed to cause some people
767 stress. Also, made that directory be built into the
768 xscreensaver executable, as a hardcoded prefix to
769 $PATH. (Might help, shouldn't hurt.)
770 * Made configure prefer the two-arg gettimeofday to the
771 one-arg version, since AIX doesn't have any prototypes.
772 * Made it work with Xaw3d (the 3D Athena library.)
773 * Made `make install' create directories as necessary.
774 * New version of lmorph from Sverre.
775 * Added `crystal' and `discreet' hacks from xlockmore.
776 * Added a new mode to `bsod'.
777 Changes since 2.20: * Made `xscreensaver-command -time' use different words.
778 (It now describes the two states as "screen blanked
779 since..." and "screen non-blanked since..." instead of
780 "active since..." and "inactive since..." which a lot
781 of people interpreted as meaning the opposite of what
783 * Improved some error messages, in the hopes of making
784 the distinction between the xscreensaver and
785 xscreensaver-command programs more obvious.
786 * Rewrote (and reorganized) parts of the xscreensaver and
787 xscreensaver-command manual pages.
788 * Renamed xscreensaver's `-lock' command-line option to
789 be `-lock-mode', to avoid confusion with the `-lock'
790 option to xscreensaver-command, which does a totally
792 * Removed xscreensaver's `-demo' command-line option for
793 a similar reason; use `xscreensaver-command -demo'
795 * Disabled SGI's ``scheme'' nonsense in a better way than
796 fully-qualifying the background colors in every single
798 * Fixed some other minor cosmetic problems when *sgiMode
800 * Fixed an X error in `bsod -root' (how ironic...)
801 Changes since 2.19: * Fixed a bug that caused the mouse to sometimes not be
802 grabbed properly (meaning the window manager menu could
803 pop up over the demo-mode display.)
804 * Fixed a bug that made the stderr output sometimes get
806 * Fixed a bug that made the demo-mode scrollbar move too
808 * Protected against a possible buffer overflow.
809 * Made `vidwhacker' not leave stray xv windows around.
810 * New version of `ant' so that Bagley doesn't calve.
811 * Make configure on AIX get XShm from the right library.
812 Changes since 2.18: * One file was missing from the tar file. Fixed.
813 Changes since 2.17: * Oops, atlantis wasn't being built by default. Fixed.
814 * Added `epicycle' hack.
815 * Added `interference' hack.
816 * Added `truchet' hack.
818 * Added some new modes to `vidwhacker'.
819 Changes since 2.16: * Added a -window-id argument to most hacks, so that they
820 can draw on arbitrary externally-provided windows.
821 * Synched with xlockmore 4.11a01.
823 * Added `atlantis' GL hack.
824 * Renamed `puzzle' hack to `jigsaw', since xlock already
825 had a different mode called `puzzle'.
826 * Made it self-configure properly when Motif 2.1.0 is
827 being used (requires -lXp now, sigh...)
828 Changes since 2.15: * Made `flag' able to do XPM images.
829 * New look for the xscreensaver logo (`xroger').
830 * Fixed compilation error on Suns with adjunct passwords.
831 * Got multi-architecture builds working again.
832 * Some configure tweaks for building on HPUX and Solaris.
833 * Fixed bug in decayscreen.
834 * Fixed typo in passwd.c.
835 * Made `cynosure' not die when colormap is full.
836 Changes since 2.14: * Added `cynosure' hack.
837 * Added `moire2' hack.
838 * Tweaked `erase.c' some more.
839 * Made unfading a bit smoother.
840 * Added `vidwhacker' hack (not installed by default.)
841 * Added `stairs' hack.
842 * Split `escher' into `cage' and `moebius', as per
844 * Changed subprocess handling to use sigaction() instead
845 of signal() if it's available (this is necessary for
846 SCO but should work fine on other systems too.)
847 * Various other tweaks.
848 Changes since 2.13: * Better fix for the Motif drag-and-die lossage.
849 * Put in some kludges to work around a LessTif bug.
850 * XScreenSaver is known to work with LessTif 0.82 now.
851 * Made fading work on high-end SGI video hardware.
852 * Fixed another SGI-specific bug in screen grabbing;
853 will the madness never cease?
854 * Fixed another crash in `xlyap'.
855 Changes since 2.12: * Made `decayscreen' do directions other than down.
857 * Fixed a crash in `xlyap'.
858 * Added CDE info to the man page, removed `cde.txt'.
859 * Configure tweaks for Zippy.
860 * Turned off the signal handling in `bubbles' because
861 it was sometimes failing to die.
862 * Added `hacks/xscreensaver-sgigl.c' to make it possible
863 to run SGI's ElectroPaint hack (/usr/demos/bin/ep)
864 with xscreensaver. Finally!
865 * Fixed a buffer overrun in the locking code that some
866 wily, malicious cracker must have slipped in.
867 * Disabled Motif drag-and-drool in the dialog box
868 buttons, since it's broken in some old versions of
870 Changes since 2.11: * Added `README.debugging'.
871 * Added `puzzle' hack.
872 * Added `xlyap' hack.
873 * Added `default-n' as a visual name, so that one can
874 have -install on by default, but turn it off for
875 certain poorly-behaved hacks (like xv.)
876 * Added support for grabbing frames of external video
877 (on SGI) to the screen-grabbing hacks (decayscreen,
878 slidescreen, slip, blitspin, and puzzle.)
879 * Improved look of tiles in `slidescreen'; fixed its
880 color allocation problem.
881 Changes since 2.10: * Tweaked `blitspin', added it to the default list.
882 * Added `lissie', `mountain', `triangle', `worm',
883 `rotor', and `ant' from xlockmore.
884 * Updated `sierpinski', `galaxy', and `lisa'.
885 * Thickened the lines in `braid' and `lmorph'.
886 * Updated VMS makefiles.
887 * Renamed `fract' to `vines'.
888 * Added `xjack' hack.
889 * Made a few more hacks use erase.c, and added a few
891 * Fixed compilation problem with Sun's version of OpenGL.
892 * Added ability to use sigaction() instead of signal()
893 to work around a SCO kernel bug.
894 Changes since 2.09: * Fixed colormap bugs in `rd-bomb'; sped up `coral'.
895 * Configure tweaks for *BSD.
896 Changes since 2.07: * New hacks `rd-bomb' and `coral'.
897 * New version of `maze' with some new algorithms.
898 * New colorized version of `rocks'.
899 * Fixed a bug in qix on 64-bit machines.
900 * Fixed a bug in the -time option.
901 * Fixed a bug in configure related to LessTif.
902 Changes since 2.06: * Minor header tweaks in windows.c and flag.c.
903 * Made multi-architecture ($VPATH) builds work properly.
904 * Merged new GL stuff from xlockmore (rubik, morph3d.)
905 * Fixed intermittent crashes in `imsmap' and `munch'.
906 * Added `fadeplot' hack from xlockmore.
907 Changes since 2.05: * Merged in VMS support from Patrick Moreau.
908 Changes since 2.04: * Fixed a MIT-SCREEN-SAVER-related crash, and tweaked
909 configure to detect the extra-random -Xss library.
910 Changes since 2.03: * HP configure tweaks. Detect and warn about LessTif.
911 * Fixed low-color behavior of `goop', `pyro', `starfish',
912 `greynetic', `flame', `halo', and `moire'.
913 Changes since 2.02: * Fixed flicker in `pipes'. Fixed 3d in `bouboule'.
914 * Added `munch' hack.
915 * Added basic dependencies to the Makefile.in files.
916 Changes since 2.01: * Fixes for compiling with the MIT saver extension.
917 * Made the yow/fortune program be a configure option.
918 * Various configure tweaks.
919 Changes since 2.00: * Added `goop' and `starfish' hacks.
920 * Added colomap cycling to `halo'.
921 * Made `attraction' use the new colormap allocator.
922 * Added better $PATH diagnostics.
923 * There was a bug in frand! Color selection should be
925 Changes since 1.34: * Converted to use `configure' instead of `imake'.
926 * ANSI C is now required.
927 * Added Kerberos locking support, from Nat Lanza.
928 * Made the stderr text use overlay planes, if possible.
929 * Reworked the xlockmore compatibility stuff again.
930 * Added `gears', `superquadrics', `escher', `pipes',
931 and `sproingies' hacks (depend on OpenGL.)
932 Changes since 1.33: * Fixed some bugs, made fading be a little smoother.
933 Changes since 1.32: * Made it work with multi-headed displays.
934 * Generalized sub-process management (Unix sucks!)
935 * Added interactive mouse frobbing to Julia.
936 * Added (untested) support for HPUX shadow passwords.
937 * Made normal non-shadow passwords be checked if the
938 shadow passwords aren't accessible for some reason.
939 Changes since 1.31: * Removed *colorPrograms and *monoPrograms resources:
940 made it possible to specify the desired visual on a
942 * Cleaned up / restructured the driver: no more globals.
943 * Made the Motif and Athena dialogs share more code.
944 * Probably fixed some Athena colormap-installation bugs.
945 * Fixed screen grabbing (cmap) on SGI 12-bit PseudoColor.
946 * Fixed divide-by-zero in bright random colormaps.
947 * Added an improved version of xlock's `flag' hack.
948 * Made unfading work better, and not flicker on SGIs.
949 * Added `sphere', `forest', `lisa' hacks from xlockmore.
950 * Added (untested) support for SunOS Adjunct passwords.
951 Changes since 1.30: * Improved colors and colormap cycling of many hacks.
952 * Cleaned up xlockmore compatibility layer.
953 * Made `blitspin' able to grab an image off the screen.
954 * Ported `swirl' and `bouboule' hacks from xlockmore.
955 * Made the driver more careful about not leaving bits on
956 the screen, or allowing other windows to raise
957 themselves: it now re-blanks the screen every so often.
958 * Added `-time' option to `xscreensaver-command'.
959 * Improved SGI screen-grabbing some more: now it can grab
960 TrueColor screens into PseudoColor windows and have the
961 colors still come out semi-reasonably.
962 Changes since 1.29: * Made `slidescreen' and `decayscreen' work better on
963 SGIs when windows of different visuals are present, by
964 using the XReadDisplay() extension to get a true 24-bit
965 image out of the frame buffer.
966 * Made `noseguy' be in color, if compiled with XPM.
967 * Ported `braid', `drift', `fract', `galaxy', `grav',
968 `ifs', `julia', `laser', `lightning', `penrose',
969 `sierpinski', `slip', `spiral', and `strange' hacks
971 * Merged `hopalong' hack with a more recent version.
973 Changes since 1.27: * Added `deco', `moire', and `kaleidescope' hacks.
974 * Merged in support for non-Motif locking and demo mode.
975 * Made `blitspin' and `bubbles' work in TrueColor.
976 * Fixed a stupid bug I introduced in `imsmap'.
977 * Added `poly' and `gravity' options to `qix'.
978 Changes since 1.26: * Added support for SGI SCREEN_SAVER extension.
979 * Made `fade' and `unfade' work on 8-bit SGIs.
980 * Made the dialog boxes more Motify.
981 * Added `bubbles' hack.
982 Changes since 1.25: * Added `lmorph' hack.
983 * Added viscosity and mouse-control to attraction.
984 * Fixed possible bad color choices in qix and attraction.
985 * Added ramp-mode to halo.
986 * Added a new RNG, which is faster and more portable
987 than using the RNG in libc.
988 * Made locking work on SCO.
989 * Various other minor tweaks that I don't remember.
990 Changes since 1.24: * Made it capture the stdout/stderr of its subprocesses
991 and present them on the screensaver window itself.
992 * Made demo mode work correctly with non-default visuals
993 and color maps, instead of always using the defaults.
994 * Added -visual argument to all included screenhacks.
995 * Support for the R6 MIT-SCREEN-SAVER server extension.
996 * Made the demo mode list scroll properly.
997 * Added `pedal' hack.
998 Changes since 1.23: * Fixed some private-colormap oddities in slidescreen,
999 decayscreen, and xroger. Fixed apparent conservation-
1000 of-mass problem in pyro; made the shrapnel round.
1001 Changes since 1.22: * Minor tweaks for IRIX5; fixed locking race condition.
1002 Changes since 1.21: * Minor tweaks for X11R6.
1003 * Fixes for non-default visuals.
1004 Changes since 1.20: * Fixed bug in color blitspin; added default image.
1005 * Added diagnostics to noseguy. Fixed off-by-one
1006 error in flame. Added some missing casts.
1007 Changes since 1.18: * Added `flame' hack.
1008 * Fixed a minor Motif dialog text field bug.
1009 * Fixed yet another XPointer-not-defined-in-R4 bug.
1010 Changes since 1.17: * Added support for shadow password files.
1011 * Fixed some Motif-related locking bugs.
1012 * Added diagnostics when locking is disabled.
1013 * Made blitspin able to use the XPM library.
1014 * Added `decayscreen' hack.
1015 Changes since 1.16: * Added `halo' hack.
1016 Changes since 1.15: * Portability fixes.
1017 Changes since 1.14: * Broke the driver up into more source files.
1018 * Moved the hacks into their own directory.
1019 * Made all `time' parameters accept the 00:00:00 syntax,
1020 so that even the parameters which are normally read as
1021 minutes can be specified in seconds.
1022 * Added colormap cycling to `imsmap'.
1023 * Made hyper work with K&R compilers.
1024 Changes since 1.13: * Added `orbit' option to `attraction' hack.
1025 * Added `lock-timeout' option.
1026 * Cleaned up options of `maze' hack.
1027 Changes since 1.8: * Added demo mode, and locking.
1028 * Added `maze' hack.
1029 * Added `norotate' option to `rocks' hack.
1030 Changes since 1.4: * Works when run from XDM before anyone logs in.
1032 * Can use `xv' as a slideshow without using up colormap
1033 entries while the screen is not blanked.
1034 * Fixed a BadDrawable error in non-XIdle mode.
1035 * Added `blitspin' and `imsmap'.
1036 Changes since 1.0: * Current list of included hacks is now: qix, helix,
1037 rorschach, attraction, greynetic, rocks, pyro,
1038 hopalong, and noseguy.
projects / xscreensaver / blob