ericw-tools/docs/vis.rst

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===
vis
===
vis - Compute visibility (PVS) for a Quake BSP file
Synopsis
========
**vis** [OPTION]... BSPFILE
Description
===========
**vis** is a tool used in the creation of maps for the game Quake. vis
looks for a .prt file by stripping the file extension from BSPFILE (if
any) and appending ".prt". vis then calculates the potentially visible
set (PVS) information before updating the .bsp file, overwriting any
existing PVS data.
This vis tool supports the PRT2 format for Quake maps with detail
brushes. See the qbsp documentation for details.
Compiling a map (without the -fast parameter) can take a long time, even
days or weeks in extreme cases. Vis will attempt to write a state file
every five minutes so that progress will not be lost in case the
computer needs to be rebooted or an unexpected power outage occurs.
Options
=======
.. program:: vis
Logging
-------
.. option:: -log
Write log files. Enabled by default.
.. option:: -nolog
Don't write log files.
.. option:: -verbose
-v
Verbose output.
.. option:: -nopercent
Don't output percentage messages.
.. option:: -nostat
Don't output statistic messages.
.. option:: -noprogress
Don't output progress messages.
.. option:: -nocolor
Don't output color codes (for TB, etc).
.. option:: -quiet
-noverbose
Suppress non-important messages (equivalent to :option:`-nopercent` :option:`-nostat`
:option:`-noprogress`)
Performance
-----------
.. option:: -lowpriority [0]
Run in a lower priority, to free up headroom for other processes.
.. option:: -threads n
Set number of threads explicitly. By default vis will attempt to
detect the number of CPUs/cores available.
.. option:: -fast
Skip detailed calculations and calculate a very loose set of PVS
data. Sometimes useful for a quick test while developing a map.
Game
----
.. option:: -gamedir "relative/path" or "C:/absolute/path"
Override the default mod base directory. if this is not set, or if it is relative, it will be derived from
the input file or the basedir if specified.
.. option:: -basedir "relative/path" or "C:/absolute/path"
Override the default game base directory. if this is not set, or if it is relative, it will be derived
from the input file or the gamedir if specified.
.. option:: -filepriority archive | loose
Which types of archives (folders/loose files or packed archives) are higher priority and chosen first
for path searching.
.. option:: -path "/path/to/folder" <multiple allowed>
Additional paths or archives to add to the search path, mostly for loose files.
.. option:: -q2rtx
Adjust settings to best support Q2RTX.
.. option:: -defaultpaths
Whether the compiler should attempt to automatically derive game/base paths for
games that support it. Enabled by default.
.. option:: -nodefaultpaths
Opt out of :option:`-defaultpaths`.
Output
------
.. option:: -noambientsky
Disable ambient sound generation for textures with names beginning
with 'SKY'.
.. option:: -noambientwater
Disable ambient sound generation for textures with names beginning
with ``*WATER`` or ``*04WATER``.
.. option:: -noambientslime
Disable ambient sound generation for textures with names beginning
with ``*SLIME``.
.. option:: -noambientlava
Disable ambient sound generation for textures with names beginning
with ``*LAVA``.
.. option:: -noambient
Disable all ambient sound generation.
.. option:: -noautoclean
Don't remove extra files on successful completion. Default is to remove them.
Advanced
--------
.. option:: -level n
Select a test level from 0 to 4 for detailed visibility calculations.
Lower levels are not necessarily faster in in all cases. It is not
recommended that you change the default level unless you are
experiencing problems. Default 4.
.. option:: -visdist n
Allow culling of areas further than n units.
.. option:: -nostate
Ignore saved state files, for forced re-runs.
.. option:: -phsonly
Re-calculate the PHS of a Quake II BSP without touching the PVS.
Author
======
| Kevin Shanahan (aka Tyrann) - http://disenchant.net
| Eric Wasylishen
| Based on source provided by id Software
Reporting Bugs
==============
| Please post bug reports at
https://github.com/ericwa/tyrutils-ericw/issues.
| Improvements to the documentation are welcome and encouraged.
Copyright
=========
| Copyright (C) 2017 Eric Wasylishen
| Copyright (C) 2013 Kevin Shanahan
| Copyright (C) 1997 id Software
| License GPLv2+: GNU GPL version 2 or later
| <http://gnu.org/licenses/gpl2.html>.
This is free software: you are free to change and redistribute it. There
is NO WARRANTY, to the extent permitted by law.