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 are upgrading, you might want to delete your ~/.xscreensaver file.
28 If you don't, you might not see the new graphics modes. If you are upgrading
29 from version 2.* to version 3.*, definitely do delete your .xscreensaver file.
31 If you think you've found a bug, please let me know! No bug report is too
32 small. But first, please read the enclosed `README.debugging' file to find
33 out what kind of information would be most helpful to include in your bug
38 You can try out xscreensaver like so:
41 xscreensaver-command -demo
43 After a few seconds, the screen should go black, and a dialog box should
44 appear in the upper right corner. This is "Demo Mode".
46 Note: unlike `xlock', xscreensaver has a client-server model: the
47 `xscreensaver' process is a daemon that runs in the background; it is
48 controlled by the foreground `xscreensaver-command' program.
50 xscreensaver has an extensive manual -- please read it!
54 The xscreensaver daemon waits until the keyboard and mouse have been idle
55 for a period, and then runs a graphics demo chosen at random. The demo is
56 terminated as soon as there is any mouse or keyboard activity (or, in
57 locking mode, when the proper password is typed.)
59 It is trivially easy to add new display modes to xscreensaver: any program
60 which can be invoked in such a way that it draws on the root window of the
61 screen can be used as a screensaver. You just change a config file --
62 there's no need to recompile or reinstall anything.
66 Along with the xscreensaver daemon itself, this package also includes
67 numerous graphics hacks for use as screensavers. There is nothing magic
68 about these: they are just programs that draw on the root window.
70 More than 90 such programs are included. For details, see the xscreensaver
71 web page, or the enclosed manual pages. There are also some helpful hints
72 on customization in the xscreensaver app-defaults file (normally installed
73 in /usr/lib/X11/app-defaults/XScreenSaver.)
75 The latest version of xscreensaver is always available on the web at
76 http://www.jwz.org/xscreensaver/.
80 Changes since 3.11: * Made it so that you can't scroll the screen while the
81 lock dialog is up (with XFree86 virtual viewports.)
82 * Fixed a bug in `flag' that caused bob's chin to get cut
83 off after a few iterations.
84 Changes since 3.10: * Made `xjack' be black-on-white-ish, so that it looks
85 less like a computer screen and more like the
86 typewritten paper it's supposed to be.
87 * New version of `pulsar'.
88 * Fixed Solaris compilation problem in `phosphor'.
89 * Made xscreensaver notice XFree86's virtual root window
90 hack, so that if the X server's root window is larger
91 than the monitor's displayable resolution, the screen
92 saver will limit itself to the area that actually
93 appears on the screen.
94 * Made the xscreensaver daemon do a better job of
95 picking the visual class that should be used for GL
96 programs. Less user intervention should be needed
97 now: you can use the logical visual name `GL' instead
98 of having to figure out by hand which one to use.
99 * Oops, the visual was defaulting to "best" instead of
100 "default", because the .xscreensaver file was not being
101 loaded quite early enough.
102 * Made configure figure out how to build icmp ping
103 support into the `sonar' hack automatically.
104 * Made warnings about not being able to read shadow
105 passwords not be printed if compiled with PAM support.
106 * Improved PAM startup diagnostics.
107 * Worked around the Solaris PAM bug that was causing
108 crashes there, so now PAM is turned on by default.
109 * Made configure detect the number of arguments that
110 pam_strerror() takes, since on Linux, this apparently
111 changed between 2.0 and 2.2, sigh.
112 * Made the /proc/interrupts kludge look for "PS/2 Mouse"
113 as well as "keyboard".
114 * Made xscreensaver notice when there has been a sudden
115 large jump in wall-clock time, and if so, lock right
116 away, instead of waiting for "lockTimeout" to expire
117 first. (Laptops need this for safer recovery from
119 * Added `-throttle' option to `xscreensaver-command'.
120 Changes since 3.09: * Added `phosphor', `xmatrix', and `pulsar' hacks.
121 * Fixed a bug in the color allocator that sometimes
122 caused `starfish' to fall back to monochrome.
123 * Reduced the amount of code that runs before root
124 privileges are disavowed: "normal" and "shadow"
125 passwords now do some initialization as root, but the
126 PAM and Kerberos authorization schemes will be
127 initialized while running as "nobody". Supposedly
128 this closes a potential security hole when using
130 * Added some more sanity checking to configure.
131 Changes since 3.08: * Added `compass', `squiral', `xflame', `wander',
132 `spotlight', and `critical' hacks.
133 * Added some new modes to `decayscreen'.
134 * Made `deluxe' work in monochrome.
135 * Generalized usage of the Double-Buffer server extension
136 in several hacks (`compass', `deluxe', `interference',
137 `kumppa', and `moire2'.)
138 * Fixed another visual-depth problem in `rd-bomb'.
139 * The screen saver will now defer blanking if neither
140 the keyboard nor the mouse could be grabbed. Instead,
141 it will just try again in a few minutes. This fixes
142 a bad interaction between xscreensaver and programs
143 like VMware that hold the mouse and keyboard grabbed
145 * Added a new erase mode (expanding spiral.)
146 Changes since 3.07: * Fixed some bugs in my port of `t3d'.
147 * Added `penetrate' and `deluxe' hacks.
148 * When linking against Motif 2.x, also link against XPM.
149 * Added support for using /proc/interrupts for idle
150 detection on Linux. Now xscreensaver shouldn't kick
151 in when the user is active on a non-X virtual console.
152 * Upgraded to autoconf 2.13.
153 Changes since 3.06: * Configure tweaks (sometimes -lXmu wasn't getting linked
154 in properly; check for _Xsetlocale in -lXintl.)
155 * Portability fixes for sonar.c.
156 * Fixed a compilation problem when you have GL but don't
158 * Made configure notice when MesaGL requires -lpthread.
159 * Made `flame' ignore SIGFPE (not sure if this is the
160 right fix; it seems only to be needed on FreeBSD.)
161 * Kludged `rd-bomb' work on visuals that are of depth 24
162 but that *do not* support pixmaps of depth 32.
163 * Fixed `halo' to work properly in TrueColor.
164 * Changed `xscreensaver.spec' to install the hacks in
165 /usr/X11R6/lib/xscreensaver/ by default, since that's
166 where recent Red Hat distributions put them.
168 * Updated versions of `crystal', `hopalong', and `flow'
170 * Imported `demon' and `loop' modes from xlockmore.
171 Changes since 3.05: * Oops, the "default-n" visual descriptor was broken;
172 it was always installing a colormap if the
173 `installColormap' preference was set, meaning that
174 `xearth', `xv' and friends were using the wrong
175 colors on 8-bit systems.
176 * Turned off HAVE_PING in `sonar', since it compiles
177 on some Linux systems, but not others of similar
179 Changes since 3.04: * Fixed an off-by-1 in `distort'.
180 * Added `sonar' hack.
181 * New version of `glplanet' (with stars.)
182 * Made all hacks exit when you type `q' or `ESC' at them,
183 and made them obey the WM_DELETE_WINDOW ClientMessage.
184 * Fixed a nonfatal buffer overrun in lament (note:
185 lament still doesn't work with MesaGL 3.0: it dies in
186 lambda_textured_triangle1(), which is Mesa's bug, not
188 Changes since 3.03: * Added an `xscreensaver.spec' file, to make it easier
189 for other folks to generate RPMs.
190 * Made the password code work on HPUX in the situation
191 where: ``enhanced security'' is available; but not
192 used; but the user typed a password more than 8
193 characters long anyway. FTSOHPUX.
194 Changes since 3.02: * Made locking work when passwd aging is enabled.
195 * Added support for PAM (Pluggable Authentication
196 Modules.) It is still turned off by default, though,
197 since it doesn't seem to work on Solaris 2.6, and has
198 been behaving erratically on Red Hat 5.1.
199 * Made each possible authentication method be tried in
200 turn until one succeeds; this means that Kerberos is
201 being used, we will first check Kerberos, and if that
202 fails, will then consult the local password file.
204 * Save and restore the bits under the passwd dialog,
205 to avoid leaving a black rectangle behind when
206 unlocking is cancelled.
207 Changes since 3.01: * Not everyone has sys/select.h, sigh...
208 Changes since 3.00: * Some fixes to `reflect'.
210 * Made it log unsuccessful attempts to unlock the screen
212 * Fixed a bug where `xscreensaver-demo' could be seeing
213 a different programs list than `xscreensaver' did.
214 Changes since 2.34: * The xscreensaver daemon no longer links against Motif
215 or Athena: demo-mode and the preferences panel are no
216 longer built in to the daemon, but are now handled by
217 an external program, `xscreensaver-demo'.
218 (I decided that this, along with the recent addition
219 of the `.xscreensaver' config file, justified bumping
220 the version number to 3.00, since this is a fairly
221 major architectural change.)
222 * Lines in the `*programs' resource may now begin with
223 the character "-", meaning "don't run this hack."
224 In this way, it's possible to disable a hack without
225 throwing away the information about it (making it
226 easier to change your mind later.) Eventually the
227 preferences/demo mode GUI should represent this as a
228 checkbox or something.
229 * Fixed a short race condition where it was possible for
230 xscreensaver to die with a BadWindow error if it was
231 blanking the screen just as another window was being
233 * Made it possible to disable specific modes in `bsod'.
234 Changes since 2.33: * Fixed a bug that was making `pipes' generate way too
235 many valves. Made the viewpoint in `pipes' be selected
236 randomly instead of always being -10 degrees.
237 * Fixed a bug in the XSHM code, in the case where the
238 server supports the XSHM extension but is not the same
239 machine as the client.
240 * Made `rd-bomb' default to taking up the whole screen.
241 * Made it not try to do fading/unfading if no PseudoColor
243 * Initial attempt at supporting VT-locking (doesn't work
245 * Eliminated the `captureStdout' resource; now
246 `captureStderr' controls both streams.
247 * Added `-capture-stderr' and `-no-capture-stderr'
248 command-line arguments.
249 * Added `glplanet' hack.
250 * When a hack is selected with `xscreensaver-command
251 -select', that hack will be used until further notice
252 (until the saver turns off, or another activation
254 Changes since 2.32: * Made `xscreensaver-command' print error messages:
255 the xscreensaver daemon now responds to ClientMessage
256 events by writing a response message on a window
257 property, instead of just writing to its stderr.
258 * Made the ~/.xscreensaver file be automatically reloaded
259 when the file date changes.
260 * The password dialog and splash screen no longer depend
261 on Motif or Athena. This should clear up a number of
262 focus problems, and is the first step on the path
263 toward moving all of the Motif/Athena/whatever code
264 out of the xscreensaver daemon, and into external
266 * Don't complain about LessTif 0.86 any more, since the
267 new password dialog makes that problem go away.
268 * Configure tweaks for Irix 6.5, SunOS 5.something.
269 * New `-reflect' option to `distort'.
270 Changes since 2.31: * Added reading and writing of a ~/.xscreensaver file,
271 so that the Preferences panel can save its settings.
272 * New version of `rubik'.
273 * Added `-select N' argument to `xscreensaver-command'.
274 * Oops, left out some of the `bubbles3d' files...
275 Changes since 2.30: * The cursor was invisible in the password dialog. Fixed.
276 * Made configure warn against MesaGL 2.6.
277 * Fixed X error at startup when using non-default visual.
278 * New version of `crystal', `ant', and `atlantis' from
280 * New hack, `bubble3d'.
281 * Added some new modes to `bsod'.
282 Changes since 2.29: * Changed the order in which -lSM and -lICE are linked
283 to be after Motif instead of before (Lesstif on Irix
285 Changes since 2.28: * Work around a bash bug in configure.
286 * Tweaked HPUX paths again. FTSOHPUX.
287 * Made configure recommend against LessTif 0.86, due
288 to a bug in that version that causes a security hole
289 in the screen locking code. LessTif 0.87 will fix it.
290 * Made all of the `--with' options to `configure' accept
291 a directory option as well (so that --with-motif=/FOO
292 will add -I/FOO/include -L/FOO/lib). I believe this is
293 the Configure Party Line of how do to such things.
294 * Fixed a bug where the mouse was left un-grabbed
295 after the first time the graphics hack was changed
296 (simplified all of the mouse-grabbing logic.)
297 * Maybe possibly perhaps made `vidwhacker' really not
298 leave stray xv windows around. This time for sure.
299 * Added a new erase mode (random dots fizzling out.)
300 * Added `-prefs' argument to `xscreensaver-command',
301 that brings up the Preferences dialog directly (it
302 seems that nobody ever noticed the `Preferences' button
303 on the Demo Mode dialog, maybe this will help.)
304 * Added a splash screen. Turn it off with *splash:false.
305 Changes since 2.27: * Better macsbug text in `bsod'.
306 * New version of `distort' with many new modes.
307 * Plugged a leak in `coral'.
308 * Tweaked configure for HPUX.
309 * Removed some compiler warnings.
310 * More consistent usage of stderr versus stdout.
311 * More diagnostics should an X error occur.
312 * Fixed a possible crash in SGI-specific unfading code.
313 Changes since 2.26: * Improved version of `distort'.
314 * Made `lament' compile against OpenGL 1.0 (though it
315 still requires 1.1 to work properly.)
316 * Updated my email address and home page.
317 Changes since 2.24: * Improved motion in `rd-bomb'.
318 * Added XSHM (shared memory extension) support to the
319 `distort', `interference', `moire', `rd-bomb', and
320 `swirl' hacks, which speeds them up a bit.
321 * Added `lament' hack.
322 Changes since 2.23: * Tweaked the order of the -L options again.
323 * Cleaned up configure's `--help' message.
324 * Added `kumppa' hack.
325 * Smarter maze-solving algorithm in `maze'.
326 * Took `xlyap' out of the default list of hacks, since
327 it's just incredibly buggy (and slow.) Maybe someday
328 someone will fix it...
329 * Added `distort' hack, but didn't add it to the default
330 list (yet) because it's still too slow.
331 * Made the Athena demo dialog look more like the Motif
332 version; it has a text-entry field now, too.
333 * Made the Athena password dialog echo asterisks, like
334 Motif does, instead of using a flyspeck font.
335 * Some random configure tweaks.
336 * Added a `timestamp' resource that makes the `-verbose'
337 messages include the time at which they were printed.
338 Changes since 2.22: * The fix for SGI's ``scheme'' nonsense broke things, and
339 let the user's "*background" resource show through.
340 Fixed it in a different way.
341 Changes since 2.21: * Added support for the DPMS server extension (Display
342 Power Management System.)
343 * Made configure advertize the `--enable-subdir' option a
344 little more, since that seemed to cause some people
345 stress. Also, made that directory be built into the
346 xscreensaver executable, as a hardcoded prefix to
347 $PATH. (Might help, shouldn't hurt.)
348 * Made configure prefer the two-arg gettimeofday to the
349 one-arg version, since AIX doesn't have any prototypes.
350 * Made it work with Xaw3d (the 3D Athena library.)
351 * Made `make install' create directories as necessary.
352 * New version of lmorph from Sverre.
353 * Added `crystal' and `discreet' hacks from xlockmore.
354 * Added a new mode to `bsod'.
355 Changes since 2.20: * Made `xscreensaver-command -time' use different words.
356 (It now describes the two states as "screen blanked
357 since..." and "screen non-blanked since..." instead of
358 "active since..." and "inactive since..." which a lot
359 of people interpreted as meaning the opposite of what
361 * Improved some error messages, in the hopes of making
362 the distinction between the xscreensaver and
363 xscreensaver-command programs more obvious.
364 * Rewrote (and reorganized) parts of the xscreensaver and
365 xscreensaver-command manual pages.
366 * Renamed xscreensaver's `-lock' command-line option to
367 be `-lock-mode', to avoid confusion with the `-lock'
368 option to xscreensaver-command, which does a totally
370 * Removed xscreensaver's `-demo' command-line option for
371 a similar reason; use `xscreensaver-command -demo'
373 * Disabled SGI's ``scheme'' nonsense in a better way than
374 fully-qualifying the background colors in every single
376 * Fixed some other minor cosmetic problems when *sgiMode
378 * Fixed an X error in `bsod -root' (how ironic...)
379 Changes since 2.19: * Fixed a bug that caused the mouse to sometimes not be
380 grabbed properly (meaning the window manager menu could
381 pop up over the demo-mode display.)
382 * Fixed a bug that made the stderr output sometimes get
384 * Fixed a bug that made the demo-mode scrollbar move too
386 * Protected against a possible buffer overflow.
387 * Made `vidwhacker' not leave stray xv windows around.
388 * New version of `ant' so that Bagley doesn't calve.
389 * Make configure on AIX get XShm from the right library.
390 Changes since 2.18: * One file was missing from the tar file. Fixed.
391 Changes since 2.17: * Oops, atlantis wasn't being built by default. Fixed.
392 * Added `epicycle' hack.
393 * Added `interference' hack.
394 * Added `truchet' hack.
396 * Added some new modes to `vidwhacker'.
397 Changes since 2.16: * Added a -window-id argument to most hacks, so that they
398 can draw on arbitrary externally-provided windows.
399 * Synched with xlockmore 4.11a01.
401 * Added `atlantis' GL hack.
402 * Renamed `puzzle' hack to `jigsaw', since xlock already
403 had a different mode called `puzzle'.
404 * Made it self-configure properly when Motif 2.1.0 is
405 being used (requires -lXp now, sigh...)
406 Changes since 2.15: * Made `flag' able to do XPM images.
407 * New look for the xscreensaver logo (`xroger').
408 * Fixed compilation error on Suns with adjunct passwords.
409 * Got multi-architecture builds working again.
410 * Some configure tweaks for building on HPUX and Solaris.
411 * Fixed bug in decayscreen.
412 * Fixed typo in passwd.c.
413 * Made `cynosure' not die when colormap is full.
414 Changes since 2.14: * Added `cynosure' hack.
415 * Added `moire2' hack.
416 * Tweaked `erase.c' some more.
417 * Made unfading a bit smoother.
418 * Added `vidwhacker' hack (not installed by default.)
419 * Added `stairs' hack.
420 * Split `escher' into `cage' and `moebius', as per
422 * Changed subprocess handling to use sigaction() instead
423 of signal() if it's available (this is necessary for
424 SCO but should work fine on other systems too.)
425 * Various other tweaks.
426 Changes since 2.13: * Better fix for the Motif drag-and-die lossage.
427 * Put in some kludges to work around a LessTif bug.
428 * XScreenSaver is known to work with LessTif 0.82 now.
429 * Made fading work on high-end SGI video hardware.
430 * Fixed another SGI-specific bug in screen grabbing;
431 will the madness never cease?
432 * Fixed another crash in `xlyap'.
433 Changes since 2.12: * Made `decayscreen' do directions other than down.
435 * Fixed a crash in `xlyap'.
436 * Added CDE info to the man page, removed `cde.txt'.
437 * Configure tweaks for Zippy.
438 * Turned off the signal handling in `bubbles' because
439 it was sometimes failing to die.
440 * Added `hacks/xscreensaver-sgigl.c' to make it possible
441 to run SGI's ElectroPaint hack (/usr/demos/bin/ep)
442 with xscreensaver. Finally!
443 * Fixed a buffer overrun in the locking code that some
444 wily, malicious cracker must have slipped in.
445 * Disabled Motif drag-and-drool in the dialog box
446 buttons, since it's broken in some old versions of
448 Changes since 2.11: * Added `README.debugging'.
449 * Added `puzzle' hack.
450 * Added `xlyap' hack.
451 * Added `default-n' as a visual name, so that one can
452 have -install on by default, but turn it off for
453 certain poorly-behaved hacks (like xv.)
454 * Added support for grabbing frames of external video
455 (on SGI) to the screen-grabbing hacks (decayscreen,
456 slidescreen, slip, blitspin, and puzzle.)
457 * Improved look of tiles in `slidescreen'; fixed its
458 color allocation problem.
459 Changes since 2.10: * Tweaked `blitspin', added it to the default list.
460 * Added `lissie', `mountain', `triangle', `worm',
461 `rotor', and `ant' from xlockmore.
462 * Updated `sierpinski', `galaxy', and `lisa'.
463 * Thickened the lines in `braid' and `lmorph'.
464 * Updated VMS makefiles.
465 * Renamed `fract' to `vines'.
466 * Added `xjack' hack.
467 * Made a few more hacks use erase.c, and added a few
469 * Fixed compilation problem with Sun's version of OpenGL.
470 * Added ability to use sigaction() instead of signal()
471 to work around a SCO kernel bug.
472 Changes since 2.09: * Fixed colormap bugs in `rd-bomb'; sped up `coral'.
473 * Configure tweaks for *BSD.
474 Changes since 2.07: * New hacks `rd-bomb' and `coral'.
475 * New version of `maze' with some new algorithms.
476 * New colorized version of `rocks'.
477 * Fixed a bug in qix on 64-bit machines.
478 * Fixed a bug in the -time option.
479 * Fixed a bug in configure related to LessTif.
480 Changes since 2.06: * Minor header tweaks in windows.c and flag.c.
481 * Made multi-architecture ($VPATH) builds work properly.
482 * Merged new GL stuff from xlockmore (rubik, morph3d.)
483 * Fixed intermittent crashes in `imsmap' and `munch'.
484 * Added `fadeplot' hack from xlockmore.
485 Changes since 2.05: * Merged in VMS support from Patrick Moreau.
486 Changes since 2.04: * Fixed a MIT-SCREEN-SAVER-related crash, and tweaked
487 configure to detect the extra-random -Xss library.
488 Changes since 2.03: * HP configure tweaks. Detect and warn about LessTif.
489 * Fixed low-color behavior of `goop', `pyro', `starfish',
490 `greynetic', `flame', `halo', and `moire'.
491 Changes since 2.02: * Fixed flicker in `pipes'. Fixed 3d in `bouboule'.
492 * Added `munch' hack.
493 * Added basic dependencies to the Makefile.in files.
494 Changes since 2.01: * Fixes for compiling with the MIT saver extension.
495 * Made the yow/fortune program be a configure option.
496 * Various configure tweaks.
497 Changes since 2.00: * Added `goop' and `starfish' hacks.
498 * Added colomap cycling to `halo'.
499 * Made `attraction' use the new colormap allocator.
500 * Added better $PATH diagnostics.
501 * There was a bug in frand! Color selection should be
503 Changes since 1.34: * Converted to use `configure' instead of `imake'.
504 * ANSI C is now required.
505 * Added Kerberos locking support, from Nat Lanza.
506 * Made the stderr text use overlay planes, if possible.
507 * Reworked the xlockmore compatibility stuff again.
508 * Added `gears', `superquadrics', `escher', `pipes',
509 and `sproingies' hacks (depend on OpenGL.)
510 Changes since 1.33: * Fixed some bugs, made fading be a little smoother.
511 Changes since 1.32: * Made it work with multi-headed displays.
512 * Generalized sub-process management (Unix sucks!)
513 * Added interactive mouse frobbing to Julia.
514 * Added (untested) support for HPUX shadow passwords.
515 * Made normal non-shadow passwords be checked if the
516 shadow passwords aren't accessible for some reason.
517 Changes since 1.31: * Removed *colorPrograms and *monoPrograms resources:
518 made it possible to specify the desired visual on a
520 * Cleaned up / restructured the driver: no more globals.
521 * Made the Motif and Athena dialogs share more code.
522 * Probably fixed some Athena colormap-installation bugs.
523 * Fixed screen grabbing (cmap) on SGI 12-bit PseudoColor.
524 * Fixed divide-by-zero in bright random colormaps.
525 * Added an improved version of xlock's `flag' hack.
526 * Made unfading work better, and not flicker on SGIs.
527 * Added `sphere', `forest', `lisa' hacks from xlockmore.
528 * Added (untested) support for SunOS Adjunct passwords.
529 Changes since 1.30: * Improved colors and colormap cycling of many hacks.
530 * Cleaned up xlockmore compatibility layer.
531 * Made `blitspin' able to grab an image off the screen.
532 * Ported `swirl' and `bouboule' hacks from xlockmore.
533 * Made the driver more careful about not leaving bits on
534 the screen, or allowing other windows to raise
535 themselves: it now re-blanks the screen every so often.
536 * Added `-time' option to `xscreensaver-command'.
537 * Improved SGI screen-grabbing some more: now it can grab
538 TrueColor screens into PseudoColor windows and have the
539 colors still come out semi-reasonably.
540 Changes since 1.29: * Made `slidescreen' and `decayscreen' work better on
541 SGIs when windows of different visuals are present, by
542 using the XReadDisplay() extension to get a true 24-bit
543 image out of the frame buffer.
544 * Made `noseguy' be in color, if compiled with XPM.
545 * Ported `braid', `drift', `fract', `galaxy', `grav',
546 `ifs', `julia', `laser', `lightning', `penrose',
547 `sierpinski', `slip', `spiral', and `strange' hacks
549 * Merged `hopalong' hack with a more recent version.
551 Changes since 1.27: * Added `deco', `moire', and `kaleidescope' hacks.
552 * Merged in support for non-Motif locking and demo mode.
553 * Made `blitspin' and `bubbles' work in TrueColor.
554 * Fixed a stupid bug I introduced in `imsmap'.
555 * Added `poly' and `gravity' options to `qix'.
556 Changes since 1.26: * Added support for SGI SCREEN_SAVER extension.
557 * Made `fade' and `unfade' work on 8-bit SGIs.
558 * Made the dialog boxes more Motify.
559 * Added `bubbles' hack.
560 Changes since 1.25: * Added `lmorph' hack.
561 * Added viscosity and mouse-control to attraction.
562 * Fixed possible bad color choices in qix and attraction.
563 * Added ramp-mode to halo.
564 * Added a new RNG, which is faster and more portable
565 than using the RNG in libc.
566 * Made locking work on SCO.
567 * Various other minor tweaks that I don't remember.
568 Changes since 1.24: * Made it capture the stdout/stderr of its subprocesses
569 and present them on the screensaver window itself.
570 * Made demo mode work correctly with non-default visuals
571 and color maps, instead of always using the defaults.
572 * Added -visual argument to all included screenhacks.
573 * Support for the R6 MIT-SCREEN-SAVER server extension.
574 * Made the demo mode list scroll properly.
575 * Added `pedal' hack.
576 Changes since 1.23: * Fixed some private-colormap oddities in slidescreen,
577 decayscreen, and xroger. Fixed apparent conservation-
578 of-mass problem in pyro; made the shrapnel round.
579 Changes since 1.22: * Minor tweaks for IRIX5; fixed locking race condition.
580 Changes since 1.21: * Minor tweaks for X11R6.
581 * Fixes for non-default visuals.
582 Changes since 1.20: * Fixed bug in color blitspin; added default image.
583 * Added diagnostics to noseguy. Fixed off-by-one
584 error in flame. Added some missing casts.
585 Changes since 1.18: * Added `flame' hack.
586 * Fixed a minor Motif dialog text field bug.
587 * Fixed yet another XPointer-not-defined-in-R4 bug.
588 Changes since 1.17: * Added support for shadow password files.
589 * Fixed some Motif-related locking bugs.
590 * Added diagnostics when locking is disabled.
591 * Made blitspin able to use the XPM library.
592 * Added `decayscreen' hack.
593 Changes since 1.16: * Added `halo' hack.
594 Changes since 1.15: * Portability fixes.
595 Changes since 1.14: * Broke the driver up into more source files.
596 * Moved the hacks into their own directory.
597 * Made all `time' parameters accept the 00:00:00 syntax,
598 so that even the parameters which are normally read as
599 minutes can be specified in seconds.
600 * Added colormap cycling to `imsmap'.
601 * Made hyper work with K&R compilers.
602 Changes since 1.13: * Added `orbit' option to `attraction' hack.
603 * Added `lock-timeout' option.
604 * Cleaned up options of `maze' hack.
605 Changes since 1.8: * Added demo mode, and locking.
607 * Added `norotate' option to `rocks' hack.