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Import of XFree86 4.4.0.

                     Release Notes for XFree86[tm] 4.4.0

                          The XFree86 Project, Inc

                              29 February 2004


     This document contains information about features and their status
     in XFree86 4.4.0.

1.  Introduction to the 4.x Release Series

XFree86 4.0 was the first official release of the new XFree86 4 series.  The
current release (4.4.0) is the latest in that series.  XFree86 4 represents a
significant redesign of the XFree86 X server.  Not all of the hardware
drivers from 3.3.x have been ported to 4.x yet, but conversely, 4.x has sup-
port for a lot of hardware that is not supported in 3.3.x.  Our Driver Status
document summarizes how the hardware driver support compares between 3.3.6
and 4.4.0.

XFree86 4.4 introduces an automatic configuration mechanism for the XFree86
server which makes it now possible to start XFree86 without first creating a
configuration file.  The initial automatic configuration support is targeted
towards Linux and FreeBSD and it is hoped that automatic configuration will
be supported on other platforms in future releases.

If you are running either  Linux or FreeBSD, try it out if you do not already
have a working XF86Config file.  If you want to customise things afterwards,
you can cut and paste the automatically generated configuration from the
/var/log/XFree86.0.log file into an XF86Config file and make your customisa-
tions there.

If you do not have any luck with automatic configuration, or you are using a
platform that is not currently supported, try one of the older methods for
getting started.

XFree86 comes with a graphical configuration tool called "xf86cfg", which
also has a text mode interface and can be used to create an initial configu-
ration file. It can also be used to customise existing configurations.

Next in the order of configuration preferences is to use the XFree86 server's
ability to create a starting configuration file.  Run as root:

     XFree86 -configure

and follow the instructions.

Finally, if all else fails, the trusty old standby text-based tool "xf86con-
fig" can also be used for generating X server config files.

At least one, and hopefully, all of these configuration options will give you
a reasonable starting point for a suitable configuration file.  With the
automatic mechanism you might even find that you don't need one!

If you do need to customise the configuration file, see the XF86Config manual
page.  You can also check the driver-specific manual pages and the related
documentation (found at tables below (section 3., page 1) also.

Before downloading  the binary distributions for this release, please have a
quick read through the Installation Document.  It may save you some time and
also help you figure out which of the binary releases you need.

The next section describes what is new in the latest version (4.4.0) compared
with the previous full release (4.3.0).  The other sections below describe
some of the new features and changes between 3.3.x and 4.0.  There are lot's
of new features, and we definitely don't have enough space to cover them all

2.  Summary of new features in 4.4.0.

This is a sampling of the new features in XFree86 4.4.0.  A more complete
list of changes can be found in the CHANGELOG that is part of the XFree86
source tree.  It can also be viewed online at our CVSweb server

2.1  Video Driver Enhancements

   o Several stability issues with the support for the Intel 830M, 845G,
     852GM, 855GM and 865G integrated graphics chipsets have been fixed.
     Some limitations related to the driver's use of the video BIOS remain,
     especially for some laptops.

   o The nv driver for NVIDIA cards has been updated as follows:

        o Support added to the nv driver for the GeForce FX 5700, which
          didn't work with XFree86 4.3.

        o The driver now does a much better job of auto-detecting which con-
          nector of dual output cards the monitor is attached to, and this
          should reduce or eliminate the need for manual XF86Config over-

        o The 2D acceleration for TNT and GeForce has been completely rewrit-
          ten and its performance should be substantially improved.

        o TNT and GeForce cards have a new Xv PutImage adaptor which does
          scaled YUV bit blits.

   o The SiS driver has seen major updates, including:

        o Support for 661/741/760 and support for 330 (Xabre).

        o Merged Framebuffer mode.

        o Support for DVI, and much more.

        o DRI for 300 series (300/305, 540, 630, 730) is supported again.

   o A new driver for several VIA integrated graphics chipsets has been

   o Various updates and bug fixes have been made to most other drivers.

2.2  Input Driver Enhancements

   o The mouse driver has some support on Linux and FreeBSD for auto-detect-
     ing which device node to use. This makes it unnecessary to supply this
     information in the XF86Config file in most cases.

2.3  IPv6 support

XFree86 4.4 supports IPv6, based on the code contributed by Sun Microsystems,
Inc. to X.Org. See X.org's document <URL:http://www.x.org/IPV6_Spe-
cific_Changes.html> for a detailed list of what these changes are and how
your system is affected by them.

2.3.1  Protocol names and aliases.

   o tcp is an alias for both IPv6 and IPv4 transports.

   o inet specifies IPv4 only.

   o inet6 specifies IPv6 only.

You can force the X server to only listen to IPv4 connections with the X
-nolisten inet6  command or you can force a IPv6 connection by setting DIS-
PLAY to inet6/host:0.

2.3.2  XDM

The IPv6 XDMCP code is not enabled by default on platforms that don't support
binding a IPv6 socket to a IPv4 address.

The XDM-AUTHORIZATION-1 authentication scheme does not support IPv6 addresses
but a new release of the protocol, XDM-AUTHORIZATION-2 has been designed;
this though is yet to be  implemented.  By default XFree86 builds do not
enable the XDM-AUTHORIZATION-1 code.

2.4  X Server and Extension Updates

   o The Mesa version used for OpenGL1.3 and DRI driver support has been
     updated to 5.0.2.

2.5  Client and Library Updates

2.5.1  Xterm

The user-visible changes to xterm since XFree86 4.3 are:

Bug Fixes:

   o Make signalInhibit resource work, i.e., disable the menu entries that
     would send signals to, or exit xterm.

   o Make cursor definition in tek4014 emulation work as originally imple-

   o Modify translations for scrollbar so that one can use shifted pageup,
     wheel mouse, etc., while the mouse pointer is over the scrollbar.

   o Correct initialization of G1 character set mapping.

New Features:

   o Modify the predictable version of the generated logfile name to append
     the process-id rather than a random value.

   o Modify scroll-back and scroll-forw actions to accept an adjustment
     value, e.g.,

          scroll-back(1, page-2)

     to scroll back by 2 lines less than a page.

   o Add visualBellDelay resource to modify the length of time used for
     visual bell, for very slow displays or very fast computers.

Improved Locale Support:

   o modify uxterm script to strip modifiers such as "@euro" from the locale
     setting before adding ".UTF-8".

   o Add logic to wide-character support which attempts to load fonts speci-
     fied by utf8Fonts subresources at startup.  The subresources have the
     same names as the fonts which they replace, e.g., font, font1, etc., so
     that the ISO-10646-1 fonts can be specified in the XTerm app-defaults

   o Improved performance with chinput application.

Improved Font Handling:

   o Document in xterm's manual page how to use XFree86 ":unscaled" keyword
     to suppress scaling of bold fonts.

   o Improved logic for deriving bold fontname from normal fontname.

   o Make double-width characters work with -u8 option.

   o Updated table of Unicode line-drawing characters.

   o Several fixes for rendering using Xft (option -fa):

        o Make height of TrueType fonts match ascent+descent.

        o Translate Unicode values (from UTF-8 output to xterm) for line-
          drawing to xterm's internal code, etc., since TrueType fonts gener-
          ally do not have either set of line-drawing glyphs.  xterm can draw
          these directly.

        o Pass 16-bit values rather than 8-bit values to xtermXftDrawString()
          to allow for wide-characters.

        o Use built-in line-drawing characters for Xft fonts.

        o Implement underlining.

   o Implement boldMode for wide-characters.

   o Modified to work with CJK double-width (bi-width/monospace) fonts.

Workarounds for Special Applications:

   o Add option -k8 and resource allowC1Printable to allow users of non-VTxxx
     character sets such as KOI-8 to treat the C1 control area (character
     codes 128-159) as printable rather than control characters.

   o Add configure option --enable-broken-st and resource brokenStringTerm to
     allow user to revert one part of the parsing table corrections.

   o Add configure option --enable-broken-osc and resource brokenLinuxOSC to
     accommodate scripts which do not distinguish between running in the
     Linux console and running in X.  Linux console recognizes malformed con-
     trol strings which start with an OSC, but are fixed-length, with no ter-

   o Add configure option --enable-pty-handshake to allow one to compile-in
     support for the pty handshaking logic, and resource ptyHandshake to
     enable or disable it.  This feature is normally enabled.

Modified Resources:

   o Change color4 to "dodger blue", since this provides better contrast.

   o Remove color resources from XTerm.ad, leaving them only in XTerm-col.ad

   o Modify UXTerm.ad resource file to include "XTerm-color" rather than
     "XTerm", in case the latter file contains no color resource definitions.

   o Changed class of veryBoldColors to VeryBoldColors, since ColorMode is
     associated with boolean resources.

   o Changed classes of colorBDMode and similar resources that override col-
     ors when a video attribute is set to ColorAttrMode, to make them dis-
     tinct from ColorMode.  This avoids an unexpected rendering of reverse
     video, for example.

Modified terminfo/termcap entries:

   o Add indp and rin to terminfo entry.

   o Add le to termcap xterm-basic entry.  Though missing from older termcaps
     for xterm, some applications check for it.

   o Correct AF/AB strings in termcap for xterm-256color and xterm-88color

2.6  I18N and Font Updates

   o FreeType2 updated to version 2.1.4.

   o The "freetype" X server font backend has been updated by the After X-TT
     Project <URL:http://x-tt.sourceforge.jp/> to include the functionality
     previously provided by the "xtt" backend, and to fix some bugs.  The
     "xtt" backend will be dropped in the next release in favour of the
     updated unified "freetype" backend.

        o The new "freetype" backend has the improved "very lazy" metric cal-
          culation method which enables super-fast loading of proportional
          CJKV fonts.

        o All of the servers, including xfs, Xnest, Xprt, Xvfb, the Cygwin-
          XFree86 server (as well as the XFree86 server) can handle the per-
          fect TTCap options.

   o The Compose file processing mechanism has been improved and made more
     flexible.  See the Xlib Compose  file support and extensions section
     below (section 5.20, page 1).

   o The Bitstream Vera TrueType fonts that Bitstream, Inc donated to the
     GNOME Foundation have been included with this release.

2.7  OS Support Updates

   o On Mac OS X, the appropriate backend drawing code is now dynamically
     loaded at runtime which reduces the X server's memory footprint.  In
     rootless mode, Apple's Xplugin library is used where available.  (Xplu-
     gin is included as part of Mac OS X on Panther.) With Xplugin, XDarwin
     provides identical performance to Apple's X11, including the following
     improvements over 4.3:

        o Added direct GLX rendering with thread support.

        o Faster 2-D drawing.

        o Added support for the Apple-WM extension so XDarwin interoperates
          with quartz-wm.

   o On Darwin, IOKit mode now uses shadowfb for much faster drawing.

   o Various GNU/Hurd support updates.

   o Experimental support added for GNU/KFreeBSD and GNU/KNetBSD systems.

   o SCO OpenServer support updates.  XFree86 4.4 now works on Release 5.0.7
     with Maintenance Pack 1, or on prior releases through Release 5.0.4.
     Please consult the README.SCO file for details.

3.  Drivers

3.1  Video Drivers

XFree86 4.4.0 includes the following video drivers:

|Driver Name   | Description              | Further Information                         |
|apm           | Alliance Pro Motion      | README.apm                                  |
|ark           | Ark Logic                |                                             |
|ati           | ATI                      | README.ati, README.r128, r128(4), radeon(4) |
|chips         | Chips & Technologies     | README.chips, chips(4)                      |
|cirrus        | Cirrus Logic             |                                             |
|cyrix (*)     | Cyrix MediaGX            | README.cyrix                                |
|fbdev         | Linux framebuffer device | fbdev(4)                                    |
|glide         | Glide2x (3Dfx)           | glide(4)                                    |
|glint         | 3Dlabs, TI               | glint(4)                                    |
|i128          | Number Nine              | README.I128, i128(4)                        |
|i740          | Intel i740               | README.i740                                 |
|i810          | Intel i8xx               | README.i810, i810(4)                        |
|imstt         | Integrated Micro Solns   |                                             |
|mga           | Matrox                   | mga(4)                                      |
|neomagic      | NeoMagic                 | neomagic(4)                                 |
|newport (-)   | SGI Newport              | README.newport, newport(4)                  |
|nsc           | National Semiconductor   | nsc(4)                                      |
|nv            | NVIDIA                   | nv(4)                                       |
|rendition     | Rendition                | README.rendition, rendition(4)              |
|s3            | S3 (not ViRGE or Savage) |                                             |
|s3virge       | S3 ViRGE                 | README.s3virge, s3virge(4)                  |
|savage        | S3 Savage                | savage(4)                                   |
|siliconmotion | Silicon Motion           | siliconmotion(4)                            |
|sis           | SiS                      | README.SiS, sis(4)                          |
|sunbw2 (+)    | Sun bw2                  |                                             |
|suncg14 (+)   | Sun cg14                 |                                             |
|suncg3 (+)    | Sun cg3                  |                                             |
|suncg6 (+)    | Sun GX and Turbo GX      |                                             |
|sunffb (+)    | Sun Creator/3D, Elite 3D |                                             |
|sunleo (+)    | Sun Leo (ZX)             |                                             |
|suntcx (+)    | Sun TCX                  |                                             |
|tdfx          | 3Dfx                     | tdfx(4)                                     |
|tga           | DEC TGA                  | README.DECtga                               |
|trident       | Trident                  | trident(4)                                  |
|tseng         | Tseng Labs               |                                             |
|via           | VIA                      | via(4)                                      |
|vesa          | VESA                     | vesa(4)                                     |
|vga           | Generic VGA              | vga(4)                                      |
|vmware        | VMWare guest OS          | vmware(4)                                   |

Drivers marked with (*) are present in a preliminary form in this release,
but are not complete and/or stable yet.

Drivers marked with (+) are for Linux/Sparc only.

Drivers marked with (-) are for Linux/mips only.

Darwin/Mac OS X uses IOKit drivers and does not use the module loader drivers
listed above. Further information can be found in README.Darwin.

XFree86 4.4.0 includes the following input drivers:

3.2  Input Drivers

   |Driver Name | Description                      | Further Information |
   |aiptek(*)   | Aiptek USB tablet                | aiptek(4)           |
   |calcomp     | Calcomp                          |                     |
   |citron      | Citron                           | citron(4)           |
   |digitaledge | DigitalEdge                      |                     |
   |dmc         | DMC                              | dmc(4)              |
   |dynapro     | Dynapro                          |                     |
   |elographics | EloGraphics                      |                     |
   |fpit        | Fujitsu Stylistic Tablet PCs     | fpit(4)             |
   |hyperpen    | Aiptek HyperPen 6000             |                     |
   |js_x        | JamStudio pentablet              | js_x(4)             |
   |kbd         | generic keyboards (alternate)    | kbd(4)              |
   |keyboard    | generic keyboards                | keyboard(4)         |
   |microtouch  | MicroTouch                       |                     |
   |mouse       | most mouse devices               | mouse(4)            |
   |mutouch     | MicroTouch                       |                     |
   |palmax      | Palmax PD1000/PD1100             | palmax(4)           |
   |penmount    | PenMount                         |                     |
   |spaceorb    | SpaceOrb                         |                     |
   |summa       | SummaGraphics                    |                     |
   |tek4957     | Tektronix 4957 tablet            | tek4957(4)          |
   |ur98(*)     | Union Reality UR-F98 headtracker | ur98(4)             |
   |void        | dummy device                     | void(4)             |
   |wacom       | Wacom tablets                    | wacom(4)            |

Drivers marked with (*) are available for Linux only.

4.  Known Problems

   o Known issues with this version of the SiS driver:

        o The driver will not work with upcoming laptops/notebooks with
          661/741/760 and 30xLV bridges as regards LCD output. This is due
          folks at SiS at the very moment writing an entirely new VBIOS for
          such machines whose data layout is not decided yet.  (This might
          affect machines with 650/740 as well within the next year.)

        o Xv does not work correctly in TV NTSC 1024x768 mode, if the overlay
          is very large (or full screen). The effect are flickering lines on
          the screen. This is a hardware problem. Do not use this mode for

        o YPbPr 720p output is blurry (at least at 1024x768; unknown for
          other modes). This is a driver problem; solution currently unknown.

   o We have received a late report that enabling DPMS support with the
     radeon driver can damage some Viewsonic monitors.  DPMS is usually dis-
     abled by default.  You can verify whether or not DPMS is enabled by run-
     ning 'xset q' from within your X session.

5.  Overview of XFree86 4.x.

XFree86 4.x has a single X server binary called XFree86.  This binary can
either have one or more video and input drivers linked in statically, or more
usually, dynamically, and in that manner load the video drivers, input
drivers, and other modules that are needed.

XFree86 4.4.0 has X server support for most UNIXand UNIX-like operating
systems on Intel/x86 platforms, plus support for Linux and some BSD OSs on
Alpha, PowerPC, IA-64, AMD64, Sparc, and Mips platforms, and for Darwin on
PowerPC.  Support for additional architectures and operating systems is in
progress and is planned for future releases.

5.1  Loader and Modules

The XFree86 X server has a built-in run-time loader, which can load normal
object files and libraries in most of the commonly used formats.  The loader
does not rely on an operating system's native dynamic loader support and it
works on platforms that do not provide this feature.  This  allows  for the
modules to be operating system independent (although not, of course, CPU
architecture independent) which means that a module compiled on Linux/x86 can
be loaded by an X server running on Solaris/x86, or FreeBSD, or even OS/2.

A main benefit of this, is that when modules are updated, they do not need to
be recompiled for every different operating system.  The loader in version
4.4.0 has support for Intel (x86), Alpha and PowerPC platforms.  It also has
preliminary support for Sparc platforms.

The X server makes use of modules for video drivers, X server extensions,
font rasterisers, input device drivers, framebuffer layers (like mfb, cfb,
etc), and internal components used by some drivers (like XAA),

The module interfaces (both API and ABI) used in this release are subject to
change without notice.  While we will attempt to provide backward compatibil-
ity for the module interfaces as of the 4.0 release (meaning that 4.0 modules
will work with future core X server binaries), we cannot guarantee this.
Compatibility in the other direction is explicitly not guaranteed because new
modules may rely on interfaces added in new releases.

Note about module security

     The XFree86 X server runs with root privileges, i.e.  the X server
     loadable modules also run with these privileges.  For this reason
     we recommend that all users be careful to only use loadable modules
     from reliable sources,  otherwise the introduction of viruses and
     contaminated code can occur and wreak havoc on your system.  We
     hope to have a mechanism for signing/verifying the modules that we
     provide available in a future release.

5.2  Configuration File

The XFree86 server uses a configuration file as the primary mechanism for
providing configuration and run-time parameters.  The configuration file for-
mat is described in detail in the XF86Config(5) manual page.

The XFree86 server has support for automatically determining an initial con-
figuration on most platforms, as well as support or generating a basic ini-
tial configuration file.

5.3  Command Line Options

Command line options can be used to override some default parameters and
parameters provided in the configuration file.  These command line options
are described in the XFree86(1) manual page.

5.4  XAA

The XFree86 Acceleration Architecture (XAA) was completely rewritten from
scratch for XFree86 4.x.  Most drivers implement acceleration by making use
of the XAA module.

5.5  Multi-head

Some multi-head configurations are supported in XFree86 4.x, primarily with
multiple PCI/AGP cards.

One of the main problems is with drivers not sufficiently initialising cards
that were not initialised at boot time.  This has been improved somewhat with
the INT10 support that is used by most drivers (which allows secondary card
to be "soft-booted", but in some cases there are other issues that still need
to be resolved.  Some combinations can be made to work better by changing
which card is the primary card (either by using a different PCI slot, or by
changing the system BIOS's preference for the primary card).

5.6  Xinerama

Xinerama is an X server extension that allows multiple physical screens to
behave as a single screen.  With traditional multi-head in X11, windows can-
not span or cross physical screens.  Xinerama removes this limitation.  Xin-
erama does, however, require that the physical screens all have the same root
depth, so it isn't possible, for example, to use an 8-bit screen together
with a 16-bit screen in Xinerama mode.

Xinerama is not enabled by default, and can be enabled with the +xinerama
command line option for the X server.

Xinerama was included with X11R6.4.  The version included in XFree86 4.x was
completely rewritten for improved performance and correctness.

Known problems:

   o Most window managers are not Xinerama-aware, and so some operations like
     window placement and resizing might not behave in an ideal way.  This is
     an issue that needs to be dealt with in the individual window managers,
     and isn't specifically an XFree86 problem.

5.7  DGA version 2

DGA 2.0 is included in 4.4.0.  Documentation for the client libraries can be
found in the XDGA(3) man page.  A good degree of backwards compatibility with
version 1.0 is provided.

5.8  DDC

The VESADisplay Data Channel (DDC[tm]) standard allows the monitor to tell
the video card (or on some cases the computer directly) about itself; partic-
ularly the supported screen resolutions and refresh rates.

Partial or complete DDC support is available in most of the video drivers.
DDC is enabled by default, but can be disabled with a "Device" section entry:
Option "NoDDC".  We have support for DDC versions 1 and 2; these can be dis-
abled independently with Option "NoDDC1" and Option "NoDDC2".

At startup the server prints out DDC information from the display, and can
use this information to set the default monitor parameters, or to warn about
monitor sync limits if those provided in the configuration file don't match
those that are detected.

5.8.1  Changed behavior caused by DDC.

Several drivers uses DDC information to set the screen size and pitch.  This
can be overridden by explicitly resetting it to the and non-DDC default value
75 with the -dpi 75 command line option for the X server, or by specifying
appropriate screen dimensions with the "DisplaySize" keyword in the "Monitor"
section of the config file.

5.9  GLX and the Direct Rendering Infrastructure (DRI)

Direct rendered OpenGLsupport is provided for several hardware platforms by
the Direct Rendering Infrastructure (DRI).  Further information about DRI can
be found at the DRI Project's web site <URL:http://dri.sf.net/>.  The 3D core
rendering component is provided by Mesa <URL:http://www.mesa3d.org>.

5.10  XVideo Extension (Xv)

The XVideo extension is supported in XFree86 4.x.  An XvQueryPortAttributes
function has been added as well as support for XvImages.  XvImages are XIm-
ages in alternate color spaces such as YUV and can be passed to the server
through shared memory segments.  This allows clients to display YUV data with
high quality hardware scaling and filtering.

5.11  X Rendering Extension (Render)

The X Rendering extension provides a 2D rendering model that more closely
matches application demands and hardware capabilities.  It provides a render-
ing model derived from Plan 9 based on Porter/Duff image composition rather
than binary raster operations.

Using simple compositing operators provided by most hardware, Render can draw
anti-aliased text and geometric objects as well as perform translucent image
overlays and other image operations not possible with the core X rendering

XFree86 4.4.0 provides a partial implementation of Render sufficient for
drawing anti-aliased text and image composition.  Still to be implemented are
geometric primitives and affine transformation of images.

Unlike the core protocol, Render provides no font support for applications,
rather it allows applications to upload glyphs for display on the screen.
This allows the client greater control over text rendering and complete
access to the available font information while still providing hardware
acceleration.  The Xft library provides font access for Render applications.

5.11.1  The Xft Library

On the client side, the Xft library provides access to fonts for applications
using the FreeType library, version 2.  FreeType currently supports Type1 and
TrueType font files, a future release is expected to support BDF and PCF
files as well, so Render applications will have access to the complete range
of fonts available to core applications.  One important thing to note is that
Xft uses the vertical size of the monitor to compute accurate pixel sizes for
provided point sizes; if your monitor doesn't provide accurate information
via DDC, you may want to add that information to XF86Config.

To allow a graceful transition for applications moving from core text render-
ing to the Render extension, Xft can use either core fonts or FreeType and
the Render extension for text.  By default, Xft is configured to support both
core fonts and FreeType fonts using the supplied version of FreeType 2.  See
the section on FreeType support in Xft for instructions on configuring
XFree86 to use an existing FreeType installation.

The Xft library uses a configuration file, XftConfig, which contains informa-
tion about which directories contain font files and also provides a sophisti-
cated font aliasing mechanism.  Documentation for that file is included in
the Xft(3) man page.

5.11.2  FreeType support in Xft

XFree86 4.4.0 includes sources for FreeType version 2.1.4, and, by default,
they are built and installed automatically.

5.11.3  Application Support For Anti-Aliased Text

Only three applications have been modified in XFree86 4.4.0 to work with the
Render extension and the Xft and FreeType libraries to provide anti-aliased
text.  Xterm, xditview and x11perf.  Migration of other applications may
occur in future releases.

By default, xterm uses core fonts through the standard core API.  It has a
command line option and associated resource to direct it to use Xft instead:

   o -fa family / .VT100.faceName: family.  Selects the font family to use.

Xditview will use Xft instead of the core API by default.  X11perf includes
tests to measure the performance of text rendered in three ways, anti-
aliased, anti-aliased with sub-pixel sampling and regular chunky text, but
through the Render extension, a path which is currently somewhat slower than
core text.

5.12  Other extensions

The XFree86-Misc extension has not been fully ported to the new server archi-
tecture yet.  This should be completed in a future release.

The XFree86-VidModeExtension extension has been updated, and mostly ported to
the new server architecture.  The area of mode validation needs further work,
and the extension should be used with care.  This extension has support for
changing the gamma setting at run-time, for modes where this is possible.
The xgamma utility makes use of this feature.  Compatibility with the 3.3.x
version of the extension is provided.  The missing parts of this extension
and some new features should be completed in a future release.

5.13  xedit

Xedit has several new features, including:

   o An embedded lisp interpreter that allows easier extension of the editor.

   o Several new syntax highlight modes, and indentation rules for C and

   o Flexible search/replace interface that allows regex matches.

   o Please refer to xedit(1) for more details.

5.14  Font support

Details about the font support in XFree86 4.x can be found in the
README.fonts document.

5.15  TrueType support

XFree86 4.x comes with two TrueType backends, known as "FreeType" backend
(the "freetype" module) and `X-TrueType' (the "xtt" module).  Both of these
backends are based on the FreeType library.  The functionality of X-TrueType
has been merged into the FreeType backend by the After X-TT Project for
XFree86 4.4.  Consequently, the old X-TrueType backend will be dropped as of
XFree86 4.5.

5.16  CID font support

Support for CID-keyed fonts is included in XFree86 4.x.  The CID-keyed font
format was designed by Adobe Systems <URL:http://www.adobe.com> for fonts
with large character sets.  The CID-keyed font support in XFree86 was donated
by SGI <URL:http://www.sgi.com>.  See the LICENSE document for a copy of the
CID Font Code Public License.

5.17  Internationalisation of the scalable font backends

XFree86 4.x has a ``fontenc'' layer to allow the scalable font backends to
use a common method of font re-encoding.  This re-encoding makes it possible
to uses fonts in encodings other than their their native encoding.  This
layer is used by the Type1 and Speedo backends and the `xfsft' version of the
TrueType backend.  The `X-TrueType' version of the TrueType backend uses a
different re-encoding method based on loadable encoding modules.

5.18  Large font optimisation

The glyph metrics array, which all the X clients using a particular font have
access to, is placed in shared memory, so as to reduce redundant memory con-
sumption.  For non-local clients, the glyph metrics array is transmitted in a
compressed format.

5.19  Unicode/ISO 10646 support

What is included in 4.x:

   o All ``-misc-fixed-*'' BDF fonts are now available in the ISO10646-1
     encoding and cover at least the 614 characters found in ISO
     8859-{1-5,7-10,14,15}, CP1252, and MES-1. The non-bold fonts also cover
     all Windows Glyph List 4 (WGL4) characters, including those found in all
     8-bit MS-DOS/Windows code pages. The 8-bit variants of the ``-misc-
     fixed-*'' BDF fonts (ISO8859-1, ISO8859-2, KOI8-R, etc.) have all been
     automatically generated from the new ISO10646-1 master fonts.

   o Some ``-misc-fixed-*'' BDF ISO10646-1 fonts now cover a comprehensive
     Unicode repertoire of over 3000 characters including all Latin, Greek,
     Cyrillic, Armenian, Gregorian, Hebrew, IPA, and APL characters, plus
     numerous scientific, typographic, technical, and backwards-compatibility
     symbols. Some of these fonts also cover Arabic, Ethiopian, Thai,
     Han/Kanji, Hangul, full ISO 8859, and more. For the 6x13 font there is
     now a 12x13ja Kanji extension and for the 9x18 font there is a 18x18ja
     Kanji/Han/Hangul extension, which covers all ISO-2022-JP-2 (RFC 1554)
     characters. The 9x18 font can also be used to implement simple combining
     characters by accent overstriking. For more information, read Markus
     Kuhn's UTF-8 and Unicode FAQ <URL:http://www.cl.cam.ac.uk/~mgk25/uni-

   o Mark Leisher's ClearlyU proportional font (similar to Computer Modern).

   o ISO 10646/Unicode UTF-8 Level 1 support added to xterm (enabled with the
     -u8 option).

   o Both the xfsft (the "freetype" module) and the X-TrueType (the "xtt"
     module) TrueType font backends support Unicode-encoded fonts.

5.20  Xlib Compose file support and extensions

A more flexible Compose file processing system was added to Xlib in XFree86
4.4.0.  The compose file is searched for in the following order:

  1.  If the environment variable $XCOMPOSEFILE is set, its value is used as
      the name of the Compose file.

  2.  If the user's home directory has a file named ".XCompose", it is used
      as the Compose file.

  3.  The old method is used, and the compose file is "<xlocaledir>/<locale-

Compose files can now use an "include" instruction.  This allows local modi-
fications to be made to existing compose files without including all of the
content directly.  For example, the system's iso8859-1 compose file can be
included with a line like this:

     include "/usr/X11R6/lib/X11/locale/iso8859-1/Compose"

There are two substitutions that can be made in the file name of the include
instruction.  %H expands to the user's home directory (the $HOME environment
variable), and %L expands to the name of the locale specific Compose file
(i.e., "<xlocaledir>/<localename>/Compose").

For example, you can include in your compose file the default Compose file by

     include "%L"

and then rewrite only the few rules that you need to change.  New compose
rules can be added, and previous ones replaced.

Finally, it is no longer necessary to specify in the right part of a rule a
locale encoded string in addition to the keysym name.  If the string is omit-
ted, Xlib figures it out from the keysym according to the current locale.
I.e., if a rule looks like:

     <dead_grave> <A> : "\300" Agrave

the result of the composition is always the letter with the "\300" code.  But
if the rule is:

     <dead_grave> <A> : Agrave

the result depends on how Agrave is mapped in the current locale.

5.21  Luxi fonts from Bigelow and Holmes

XFree86 now includes the ``Luxi'' family of Type 1 fonts and TrueType fonts.
This family consists of the fonts ``Luxi Serif'', ``Luxi Sans'' and
``Luxi Mono'' in Roman, oblique, bold and bold oblique variants.  The True-
Type version have glyphs covering the basic ASCII Unicode range, the Latin 1
range, as well as the Extended Latin range and some additional punctuation
characters.  In particular, these fonts include all the glyphs needed for
ISO 8859 parts 1, 2, 3, 4, 9, 13 and 15, as well as all the glyphs in the
Adobe Standard encoding and the Windows 3.1  character set.

The glyph coverage of the Type 1 versions is somewhat reduced, and only cov-
ers ISO 8859 parts 1, 2 and 15 as well as the Adobe Standard encoding.

The Luxi fonts are original designs by Kris Holmes and Charles Bigelow from
Bigelow and Holmes Inc., who developed the Luxi typeface designs in Ikarus
digital format.  URW++ Design and Development GmbH converted the Ikarus for-
mat fonts to TrueType and Type 1 font programs and implemented the grid-fit-
ting "hints" and kerning tables in the Luxi fonts.

The license terms for the Luxi fonts are included in the file `COPYRIGHT.BH',
as well as in the License document.  For further information, please contact
<design@bigelowandholmes.com> or <info@urwpp.de>, or consult the URW++ web
site <URL:http://www.urwpp.de>.

6.  Credits

This section lists the credits for the XFree86 4.4.0 release.  For a more
detailed breakdown, refer to the CHANGELOG file in the XFree86 source tree,
the cvs-commit archives <URL:http://www.mail-archive.com/cvs-com-
mit@xfree86.org/maillist.html>, or the 'cvs log' information for individual
source files.

      New Features, Enhancements and Updates:

                  IPv6 support:
                        Alan Coopersmith, Fabio Massimo Di Nitto, Marc Aurele
                        La France, Matthieu Herrb, David H. Dawes.

                  NVIDIA 'nv' driver rewrite:
                        Mark Vojkovich.

                  SiS driver development:
                        Thomas Winischhofer.

                  New VIA video driver:
                        VIA, Alan Cox, Luc Verhaegen, Thomas Hellstr.

                  Intel 'i810' driver fixes and stability improvements:
                        Egbert Eich, David H. Dawes, Christian Zietz

                  Improved and more flexible Compose system:
                        Ivan Pascal.

                  Automatic configuration for the XFree86 server:
                        David H. Dawes.

                  Reworked FreeType font backend module:
                        Chisato Yamauchi and the After X-TT Project.

                  Xterm fixes, maintenance and enhancements:
                        Thomas E. Dickey.

                  Mac OS X enhancements:
                        Torrey T. Lyons, John Harper.

                  GNU/Hurd updates and preliminary GNU/KFreeBSD and GNU/KNetBSD
                             support:" Robert Millan.

                  SCO support updates:
                        Kean Johnston.

                  Bitstream Vera fonts:
                        Bitstream, Inc, and the GNOME Foundation.


                  General Integration of Submissions:
                        Egbert Eich, David H. Dawes, Ivan Pascal, Alan Houri-
                        hane, Matthieu Herrb.

                  DRI Integration:
                        Alan Hourihane.

      Release Engineering:
            David H. Dawes.

      Patches and other submissions (in alphabetical order):
            Roi a Torkilsheyggi, Dave Airlie, Andrew Aitchison, Marco Antonio
            Alvarez, Alexandr Andreev, Jack Angel, Eric Anholt, Ani, Juuso
            erg, Sergey Babkin, Alexey Baj, Bang Jun-Young, Uberto Barbini,
            Matthew W. S. Bell, Vano Beridze, Hiroyuki Bessho, Andrew Bevitt,
            Christian Biere, Martin Birgmeier, Jakub Bogusz, Le Hong Boi,
            Paul Bolle, Charl Botha, Stanislav Brabec, Eric Branlund, Rob
            Braun, Peter Breitenlohner, Michael Breuer, Kevin Brosius, Fred-
            erick Bruckman, Oswald Buddenhagen, Nilg Belma Buger, Julian
            Cable, Yukun Chen, Ping Cheng, Juliusz Chroboczek, Fred Clift,
            Alan Coopersmith, Martin Costabel, Alan Cox, Michel Dzer, David
            Dawes, Leif Delgass, Richard Dengler, John Dennis, Thomas Dickey,
            Randy Dunlap, Chris Edgington, Paul Eggert, Paul Elliott,
            Emmanuel, Visanu Euarchukiati, Mike Fabian, Rik Faith, Brian
            Feldman, Wu Jian Feng, Kevin P. Fleming, Jose Fonseca, Hugues
            Fournier, Miguel Freitas, Quentin Garnier, Bre Gaup, Michael
            Geddes, Frank Giessler, Hansruedi Glauser, Wolfram Gloger,
            Alexander Gottwald, Guido Guenther, Ralf Habacker, Bruno Haible,
            Lindsay Haigh, John Harper, James Harris, Mike A. Harris, Bryan
            W. Headley, John Heasley, Thomas Hellstr, Matthieu Herrb,
            Jonathan Hough, Alan Hourihane, Joel Ray Holveck, Harold L Hunt
            II, Ricardo Y. Igarashi, Mutsumi ISHIKAWA , Tsuyoshi ITO, Kean
            Johnston, Nicolas JOLY, Phil Jones, Roman Kagan, Theppitak
            Karoonboonyanan, Etsushi Kato, Koike Kazuhiko, Aidan Kehoe, Juer-
            gen Keil, Andreas Kies, Thomas Klausner, Mario Klebsch, Egmont
            Koblinger, Vlatko Kosturjak, Kusanagi Kouichi, Mel Kravitz, Peter
            Kunzmann, Nick Kurshev, Mashrab Kuvatov, Marc La France, Radics
            Laszlo, Zarick Lau, Nolan Leake, Michel Lespinasse, Noah Levitt,
            Dave Love, H.J. Lu, Lubos Lunak, Sven Luther, Torrey T. Lyons,
            Calum Mackay, Paul Mackerras, Roland Mainz, Kevin Martin, Michal
            Maruska, Kensuke Matsuzaki, maxim, Stephen McCamant, Ferris
            McCormick, Luke Mewburn, Nicholas Miell, Robert Millan, Hisashi
            MIYASHITA, Gregory Mokhin, Patrik Montgomery, Joe Moss, Josselin
            Mouette, Frank Murphy, Reiko Nakajima, Paul Nasrat, Dan Nelson,
            Bastien Nocera, Alexandre Oliva, Hideki ONO, Peter Osterlund,
            Sergey V. Oudaltsov, Smus Ciardhun, Bob Paauwe, Paul
            Pacheco, Tom Pala, Ivan Pascal, T. M. Pederson, Earle F. Phil-
            hower III, Nils Philippsen, Manfred Pohler, Alexander Pohoyda,
            Alain Poirier, Arnaud Quette, Jim Radford, Dale Rahn, Lucas Cor-
            reia Villa Real, RenRebe, Tyler Retzlaff, Sebastian Rittau, Tim
            Roberts, Alastair M. Robinson, Branden Robinson, Daniel Rock, Ian
            Romanick, Bernhard Rosenkraenzer, Ms Rullgd, Andriy Rysin,
            Supphachoke Santiwichaya, Pablo Saratxaga, Matthias Scheler, Jens
            Schweikhardt, Danilo Segan, Shantonu Sen, Stas Sergeev, Jungshik
            Shin, Nikola Smolenski, Andreas Stenglein, Paul Stewart, Alexan-
            der Stohr, Alan Strohm, Will Styles, James Su, Mike Sulivan,
            Ville Syrjala, Slava Sysoltsev, Akira TAGOH, Toshimitsu Tanaka,
            Akira Taniguchi, Owen Taylor, Neil Terry, Jonathan Thambidurai,
            John Tillman, Adam Tlalka, Linus Torvalds, Christian Tosta, War-
            ren Turkal, Stephen J. Turnbull, Ted Unangst, Mike Urban, Simon
            Vallet, Thuraiappah Vaseeharan, Luc Verhaegen, Yann Vernier,
            Michail Vidiassov, Sebastiano Vigna, Mark Vojkovich, Stephane
            Voltz, Boris Weissman, Keith Whitwell, Thomas Winischhofer, Eric
            Wittry, Kim Woelders, Roy Wood, Jason L. Wright, Joerg Wunsch,
            Chisato Yamauchi, Hui Yu.

      Docbook/XML conversion:
            John Himpel and the XFree86 documentation team.

            Georgina O. Economou

            Internet Systems Consortium, Inc <URL:http://www.isc.org/>.

7.  Attributions/Acknowledgements

This product includes software developed by The XFree86 Project, Inc
(http://www.xfree86.org/) and its contributors.

This produce includes software that is based in part of the work of the
FreeType Team (http://www.freetype.org).

This product includes software developed by the University of California,
Berkeley and its contributors.

This product includes software developed by Christopher G. Demetriou.

This product includes software developed by the NetBSD Foundation, Inc. and
its contributors

This product includes software developed by X-Oz Technologies (http://www.x-

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$XFree86: xc/RELNOTES,v 1.38 2004/02/28 16:37:58 dawes Exp $