This article lists the important changes in [[version:1.9.10]].


====== Fixed bugs ======


  *  Crash when locating a fallback skin for a model without skins (out of bounds memory access).
  *  Crash when replacing text definitions (null pointer access).
  *  Crashes with add-ons using the HI_START/HI_END method of texture replacement.
  *  Fatal error attempting to enter lighting debug mode ({{:var|rend-tex}} 2).


===== Platform-specific =====

  *  Unix: All Games: chat messages don’t show in HUD due to improper use of memory buffers. {{:sfbug|1092}}
  *  Mac OS X: launcher config updated for ringzero: all game plugins’ resources made available using vdmaps.
  *  Windows: crash when switching to desktop resolution at shutdown (a late window resize callback occurred).


===== Gameplay =====

  *  Stuck column in Doom E1M7 (using fixed-precision math for bbox/line tests).
  *  Finale object rotations regression (rotating around an incorrect origin).


===== Graphics =====

  *  Don’t override user’s monitor color transfer function (all changes should be applied relative to the user’s transfer func).
  *  All Games: centering the map title in a wide viewport (when entering a new map).
  *  Incorrect world dimensions of sprites with high-resolution texture replacements.
  *  Broken "tall patch" composition.
  *  Out-of-namespace flat/patch resource lookup errors.
  *  Sky models and various map properties invalid after an engine reset.


===== Multiplayer =====

  *  Server: connecting to one’s own local dedicated server shouldn’t cause a duplicate client ID error.


===== UI =====

  *  [[:listmaps]] printed [null] as the source file for missing maps and omitted maps outside the default progression.


===== libdeng2 =====

  *  App init error (with, {{:arg|loglevel}} critical) (native file removed before created).
  *  ZipArchive produced corrupt data under some circumstances.
  *  Bug in de::Info related to finding keys by ‘:’ separated identifier path.
  *  Script: parser bug concerning ‘:’ appearing inside “if” statement’s condition.


===== Deh Reader =====

  *  Parser bug causing some text patches to be skipped.


===== Doom =====

  *  Incorrect texture frames for the FIRELAV animation.
  *  Missing "been there" splats and incorrect map titles in some intermissions.
  *  Broken Fortress of Mystery animation during the E2M5 => E2M9 intermission.


===== Heretic =====

  *  Warping to a map outside the default progression did not work.


====== New features and changes ======


  *  The application data path now has priority over system-wide paths (e.g., those set with [[:doomwaddir]]).
  *  Improved startup performance with several file system and resource management optimizations.
  *  Tools ([[:texc]], [[:wadtool]], [[:md2tool]]) are included in the main distribution packages (unless ''CONFIG+=deng_notools'').
  *  Added the ''deng_tests'' build option: additional small test apps will be built and deployed alongside the engine binaries.
  *  Moved engine sources to domain-specific subfolders, clarifying the internal structure and dependencies.
  *  Moved common, generic-purpose code from engine to [[:libdeng1]]/[[:libdeng2]].
  *  Launcher: removed "j" prefixed game plugin names to "lib" (or none).
  *  Launcher: removed options for configuring the display resolution (now offered in the engine itself).


===== Platform-specific =====


  *  The default display mode is fullscreen with desktop resolution on Windows and Mac OS X, maximized window for Unix.
  *  Windows: [[:doomsday.out]] is by default placed to **AppData\Local\Deng Team\Doomsday Engine**.
  *  Windows: deng2 version metadata contains build number as part of version number.
  *  Unix: **defaults** config file for de::UnixInfo.


===== Audio =====


  *  FMOD: Attempt to detect system's speaker mode and use it (5.1, 7.1, Prologic).
  *  FMOD: Added command line options for setting speaker mode manually: {{:arg|speaker51}}, {{:arg|speaker71}}, {{:arg|speakerprologic}}.
  *  FMOD: {{:var|sound-rate}} has no effect with FMOD because upsampling is not needed, FMOD can resample when necessary.
  *  FluidSynth (Unix): compiling with the system libfluidsynth, uses libfluidsynth’s output driver to play music
  *  FluidSynth (Unix): audio driver can be chosen with "fluidsynth:driver" in the **defaults** info file.


===== Games =====


  *  Renamed core resource packages (e.g., jdoom.pk3) using the new "lib" prefix instead of "j" (libdoom.pk3).
  *  Removed "j" prefixed game plugin version metadata.
  *  Dropped old j-plugin version numbers, now using the main Doomsday version.


===== libdeng2 =====


  *  Imported script engine from Hawthorn (presently only used for libdeng2 config and storing automatic update preferences, main window position, display mode settings).
  *  Added {{:arg|loglevel}} to set the log entry level (e.g., DEBUG or TRACE).
  *  Each {{:arg|v}}/{{:arg|verbose}} increases the enabled log entry level by one.
  *  More compact log output: abbreviated log entry headers.
  *  Script: references between Records can be restored after deserialization (with some caveats).
  *  Script: improved textual representation of [[:record]].
  *  Script: boolean numbers are printed as “True” and “False” instead of “1” and “0”.
  *  Script: added “export” statement and keyword.
  *  Script: calling native functions from scripts.
  *  Script: native modules [[:display_mode_module|DisplayMode]] and [[:version_module|Version]].
  *  Replaced deng.de script => Config.de, added functions for resetting to/accessing the default config values.
  *  Added package [[:persist.pack]] for storing all persistent state into.
  *  Config stored persistently in **/home/persist.pack/modules/Config** instead of **/home/deng.config**.
  *  Serialization versioning.


====== Contributors ======

  *  [[http://dengine.net/forums/memberlist.php?mode=viewprofile&u=58|Vermil]]: weapon names and other text definitions for Chex Quest and HacX