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