.TH POV-Ray 1 "July 2021" "POV\-Team" "Version 3.8.0" \" -*- nroff -*-
.\" man page written by Andreas Dilger
.\" updated by Mark Gordon for POV-Ray v3.5
.\" updated by Nicolas Calimet and Christoph Hormann for POV-Ray v3.6
.\" updated by James Holsenback for POV-Ray v3.7
.\" updated by William F. Pokorny and Christoph Lipka for POV-Ray v3.8

.SH NAME
povray \- POV\-Ray: The Persistence of Vision Ray Tracer

.SH SYNOPSIS
\fBpovray\fP [\fB+O\fP\fIoutput_file\fP] [\fB+/\-option\fP ...]
[\fIinput_file\fP]
.LP
\fBpovray\fP [\fB+I\fP\fIinput_file\fP] [\fB+O\fP\fIoutput_file\fP]
[\fB+/\-option\fP ...] [\fIINI_file\fP]

.SH DESCRIPTION
\fBPOV\-Ray\fP is a free, full\-featured ray tracer, written and maintained
by a team of volunteers on the Internet.  On the UNIX platform \fBPOV\-Ray\fP
can be compiled with support for preview capabilities using the Simple
DirectMedia Layer V1.2 library (https://www.libsdl.org).
.LP
This manual page only lists the basic \fBPOV\-Ray\fP and UNIX specific
features and command\-line options for this version of \fBPOV\-Ray\fP.
For a complete description of the features of \fBPOV\-Ray\fP and
its scene description language (a.k.a. \fBPOV\-Ray\fP SDL),
or for a better explanation of the meaning of the
command\-line and INI file options, please consult the online documentation
at http://wiki.povray.org/content/Documentation:Contents or the documentation
capture that should accompany all versions of \fBPOV\-Ray\fP. The documentation
is installed in PREFIX/share/doc/povray-3.8, where PREFIX is /usr/local
by default, or a path specified when configuring the source package for
compilation and installation.
.LP
http://www.povray.org
.LP
Some of the UNIX\-specific features are:
.IP
ASCII graphics in the text\-mode version allow a basic view of
the current rendering on text\-only terminals.
.IP
An interrupt handler allows rendering to be interrupted in a safe way,
so that any data not currently written to disk will be saved before
exiting.  Control\-C or SIGINT will cause a user abort, and save the
current rendering, before exiting.  See \fIkill(1)\fP for more information.
.IP
Platform and architecture-independent rendering means that the same scene
will render in the same way on all computers and operating systems
(with the exception of the rendering speed, of course).

.SH OPTIONS
Options can be specified with either a leading '+' or a leading '\-'.
Many options are switches, meaning a '+' turns the option on, and a '\-'
turns the option off.  For other options, it doesn't matter if
a '+' or a '\-' is used.  Most options cannot have spaces in them
so you should specify \fB+FN\fP rather than \fB+F N\fP, and combining
options is not allowed, so \fB+SC\fP is very different from \fB+S +C\fP.
Options are not case sensitive.
.LP
The command\-line options are shown below with their corresponding INI
file options.  If the same option is specified multiple times, whether
in INI files or on the command\-line, the last such option overrides any
previous ones, with the exception of the \fB+L\fP or \fBLibrary_Path\fP
option, which is cumulative.

.SS Parsing options:
.TP
\fBI\fP<\fIinput_file_name\fP> or \fBInput_File_Name\fP=\fIfile\fP
Specifies the input file to use. Only real files are supported. Using '\-' 
as the input file name, to read from the standard input, is deprecated.
.TP
\fBHI\fP<\fIheader_include_file_name\fP> or \fBInclude_Header\fP=\fIfile\fP
Specifies a file as the first include file of a scene file.  This can be
used to always include a specific set of default include files used by
all your scenes.
.TP
\fBL\fP<\fIlibrary_path\fP> or \fBLibrary_Path\fP=\fIpath\fP
Specifies a directory to search for input files, include files,
fonts, and image maps, if the specified file is not in the current
directory.  This may be specified multiple times to increase the
number of directories to search.
.TP
\fBMV\fP\fIn.n\fP or \fBVersion\fP=\fIfloat\fP
Treat scene files as if they were version \fIn.n\fP instead of the
current version.  This may be overridden from within the scene file.
.TP
\fBSU\fP or \fBSplit_Unions\fP=\fIbool\fP
Split bounded CSG unions if children are finite.  This allows automatic
bounding of CSG objects to take place.
.TP
\fBUR\fP or \fBRemove_Bounds\fP=\fIbool\fP
Remove unnecessary bounding objects.  This allows automatic bounding of
older scene files to take place.
.TP
\fBBM1\fP or \fBBounding_Method\fP=\fB1\fP
Enable BVH (Bounding Volume Hierarchy) bounding (the default).
.TP
\fBBM2\fP or \fBBounding_Method\fP=\fB2\fP
Enable BSP (Binary Space Partitioning) tree bounding.
.SS Output options:
.TP
\fBH\fP\fIn\fP or \fBHeight\fP=\fIinteger\fP
The image should be \fIn\fP pixels high.
.TP
\fBW\fP\fIn\fP or \fBWidth\fP=\fIinteger\fP
The image should be \fIn\fP pixels wide.
.TP
\fBSR\fP\fIn\fP or \fBStart_Row\fP=\fIinteger\fP
Start the rendering at row \fIn\fP from the top of the screen.
.TP
\fBSR\fP0.\fIn\fP or \fBStart_Row\fP=\fIfloat\fP
Start the rendering \fIn\fP percent from the top of the screen.
.TP
\fBER\fP\fIn\fP or \fBEnd_Row\fP=\fIinteger\fP
End the rendering at row \fIn\fP from the top of the screen.
.TP
\fBER\fP0.\fIn\fP or \fBEnd_Row\fP=\fIfloat\fP
End the rendering at \fIn\fP percent from the top of the screen.
.TP
\fBSC\fP\fIn\fP or \fBStart_Column\fP=\fIinteger\fP
Start the rendering at column \fIn\fP from the left of the screen.
.TP
\fBSC\fP0.\fIn\fP or \fBStart_Column\fP=\fIfloat\fP
Start the rendering at \fIn\fP percent from the left of the screen.
.TP
\fBEC\fP\fIn\fP or \fBStart_Column\fP=\fIinteger\fP
End the rendering at column \fIn\fP from the left of the screen.
.TP
\fBEC\fP0.\fIn\fP or \fBStart_Column\fP=\fIfloat\fP
End the rendering at \fIn\fP percent from the left of the screen.
.TP
\fBC\fP or \fBContinue_Trace\fP=\fIbool\fP
Continue a previously interrupted scene trace.
.TP
\fBCC\fP or \fBCreate_Continue_Trace_Log\fP=\fIbool\fP
Create trace state file needed to later continue an interrupted scene trace.
.TP
\fBP\fP or \fBPause_When_Done\fP=\fIbool\fP
If previewing, pause when the rendering is complete before closing the window.
.TP
\fBV\fP or \fBVerbose\fP=\fIbool\fP
Output verbose status messages on the progress of the rendering.
.TP
\fBWL\fP\fIn\fP or \fBWarning_Level\fP=\fIinteger\fP
Set warning level to \fIn\fP.

.SS Output options \- display related:
.TP
\fBD\fP or \fBDisplay\fP=\fIbool\fP
Turns graphic display on/off, if program built with Simple DirectMedia Layer library.
.TP
\fBSP\fP\fIn\fP or \fBPreview_Start_Size\fP=\fIinteger\fP
Start mosaic preview with blocks \fIn\fP pixels square.
.TP
\fBEP\fP\fIn\fP or \fBPreview_End_Size\fP=\fIinteger\fP
End mosaic preview with blocks \fIn\fP pixels square.
.TP
\fBUD\fP or \fBDraw_Vistas\fP=\fIbool\fP
Draw vista rectangles before rendering has been deprecated.
.SS Output options \- file related:
.TP
\fBF\fP[\fIBCEHJNPT\fP][\fIn\fP] or \fBOutput_to_File\fP=\fIbool\fP \fBOutput_File_Type\fP=\fIchar\fP
Store the rendered image using one of the available formats, namely  \fIB\fPMP,
\fIC\fPompressed TGA, Open\fIE\fPXR, Radiance \fIH\fPigh Dynamic-Range, \fIJ\fPPEG, P\fIN\fPG, \fIP\fPPM,
and \fIT\fPGA given all the image libraries are available. If no image output option
specified, output defaults to (PNG).
.TP
\fBO\fP<\fIoutput_file\fP> or \fBOutput_File_Name\fP=\fIfile\fP
Write the output to the file named \fIoutput_file\fP, or the standard
output if '\-' is given as the output file name.
.TP
\fBMI\fP\fIn\fP or \fBMax_Image_Buffer_Memory\fP=\fIn\fP
Sets the allowable size of the output image cache in megabytes.
.SS Tracing options:
.TP
\fBMB\fP\fIn\fP or \fBBounding\fP=\fIbool\fP \fBBounding_Threshold\fP=\fIinteger\fP
Use automatic bounding slabs if more than \fIn\fP objects are in the scene.
.TP
\fBQ\fIn\fP or \fBQuality\fP=\fIinteger\fP
Render at quality \fIn\fP.  Qualities range from \fI0\fP for rough images
and \fI9\fP for complete ray\-tracing and textures, and \fI10\fP and \fI11\fP
add radiosity.
.TP
\fBA\fP0.\fIn\fP or \fBAntialias\fP=\fIbool\fP \fBAntialias_Threshold\fP=\fIinteger\fP
Do antialiasing on the pixels until the difference between adjacent pixels
is less that 0.\fIn\fP, or the maximum recursion depth is reached.
.TP
\fBAM\fP\fIn\fP or \fBSampling_Method\fP=\fIinteger\fP
Specify the method of antialiasing used, non\-adaptive (\fIn\fP = 1), or
adaptive antialiasing (\fIn\fP = 2).
.TP
\fBJ\fP\fIn.n\fP or \fBJitter\fP=\fIbool\fP \fBJitter_Amount\fP=\fIfloat\fP
Specify maximum radius, in pixels, that antialiased samples should be
jittered from their true centers.
.TP
\fBR\fP\fIn\fP or \fBAntialias_Depth\fP=\fIinteger\fP
Set the maximum recursion depth for antialiased pixel sub\-sampling.
.TP
\fBUA\fP or \fBOutput_Alpha\fP=\fIbool\fP
Use alpha channel for transparency mask.
.TP
\fBUL\fP or \fBLight_Buffer\fP=\fIbool\fP
Use light buffer to speed up rendering has been deprecated.
.TP
\fBUV\fP or \fBVista_Buffer\fP=\fIbool\fP
Use vista buffer to speed up rendering has been deprecated.

.SS Animation options:
.TP
\fBK\fP\fIn.n\fP or \fBClock\fP=\fIfloat\fP
Render a single frame of an animation with the clock value \fIn.n\fP.
.TP
\fBKFI\fP\fIn\fP or \fBInitial_Frame\fP=\fIinteger\fP
Specify the initial frame number for an animation.
.TP
\fBKFF\fP\fIn\fP or \fBFinal_Frame\fP=\fIinteger\fP
Specify the final frame number for an animation.  This must be set at a
value other that 1 in order to render multiple frames at once.
.TP
\fBKI\fP\fIn.n\fP or \fBInitial_Clock\fP=\fIfloat\fP
Specify the clock value for the initial frame of an animation.
.TP
\fBKF\fP\fIn.n\fP or \fBFinal_Clock\fP=\fIfloat\fP
Specify the clock value for the frame final of an animation.
.TP
\fBSF\fP\fIn\fP or \fBSubset_Start_Frame\fP=\fIinteger\fP
Render a subset of frames from an animation, starting at frame \fIn\fP.
.TP
\fBSF\fP\fI0.n\fP or \fBSubset_Start_Frame\fP=\fIfloat\fP
Render a subset of frames from an animation, starting \fIn\fP percent
into the animation.
.TP
\fBEF\fP\fIn\fP or \fBSubset_End_Frame\fP=\fIinteger\fP
Render a subset of frames from an animation, stopping at frame \fIn\fP.
.TP
\fBEF\fP\fI0.n\fP or \fBSubset_End_Frame\fP=\fIfloat\fP
Render a subset of frames from an animation, stopping \fIn\fP percent
into the animation.
.TP
\fBKC\fP or \fBCyclic_Animation\fP=\fIbool\fP
Generate clock values for a cyclic animation.
.TP
\fBUF\fP or \fBField_Render\fP=\fIbool\fP
Rendering alternate frames using odd/even fields has been deprecated.
.TP
\fBUO\fP or \fBOdd_Field\fP=\fIbool\fP
Starting a field rendered animation on the odd field rather than the even field has been deprecated.

.SS Redirecting options:
.TP
\fBGI<name>\fP or \fBCreate_Ini\fP=\fIbool\fP or \fBCreate_Ini\fP=\fIfile\fP
Write all INI parameters to a file named after the input scene file, or one
with the specified name.
.TP
\fBG\fP[\fIADFRSW\fP]<name> or \fB<Stream>_File\fP=\fIbool\fP or \fB<Stream>_File\fP=\fIfile\fP
Write the stream to the console and/or the specified file.  The streams are
\fIA\fPll_File (except status), \fID\fPebug_File, \fIF\fPatal_File,
\fIR\fPender_File, \fIS\fPtatistics_File, and the \fIW\fParning_File.

.SS Exit status:
.TP
\fB0\fP  if OK,
.TP
.TP
\fB1\fP  if minor problems (e.g. invalid options),
.TP
.TP
\fB>1\fP if serioues trouble (e.g. Sementation fault).

.SH FILES
.LP
\fBPOV\-Ray\fP for UNIX allows a \fIpovray.ini\fP file in the current
directory to override the individual setting in
\fI$HOME/.povray/3.8/povray.ini\fP.
\fBPOV\-Ray\fP looks for initial configuration information, like the
Library_Path settings, which gives the location for the standard include
files, first in the environment variable \fI$POVINI\fP, then in
\fI./povray.ini\fP, then in \fI$HOME/.povray/3.8/povray.ini\fP, then in
\fIPREFIX/etc/povray/3.8/povray.ini\fP. The PREFIX directory can be changed
at compile\-time using the \-\-prefix option of the configure script.
For backward compatibility with \fBPOV\-Ray\fP version 3.5 and earlier,
the \fI$HOME/.povrayrc\fP and \fI$PREFIX/etc/povray.ini\fP files are also
searched for when none of the above files were found.
.LP
Since version 3.5 \fBPOV\-Ray\fP features an I/O Restriction mechanism.
I/O Restrictions attempt to at least partially protect a machine running
\fBPOV-Ray\fP from having files read or written outside of a given set
of directories. The settings are defined in two \fIconfiguration files\fP,
a system-level \fIPREFIX/etc/povray/3.8/povray.conf\fP file and an user-level
\fI$HOME/.povray/3.8/povray.conf\fP file with more restrictive settings.
As of \fBPOV-Ray\fP v3.6 the format of these configuration files has changed,
and no backward compatibility is retained with the configuration files
in \fBPOV-Ray\fP 3.5. See the documentation for further details and
examples of I/O Restriction settings.

.SH SEE ALSO
kill(1) and Full documentation at:
  http://wiki.povray.org/content/Documentation:Contents


.SH COPYRIGHT
Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
Copyright (c) 1991-2017 Persistence of Vision Raytracer Pty. Ltd.
.LP
POV-Ray is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
.LP
POV-Ray is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.
.LP
You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

.SH TRADEMARKS
The terms \fIPersistence of Vision Ray Tracer\fP, \fIPOV-Team\fP and \fIPOV-Ray\fP
are trademarks of Persistence of Vision Raytracer Pty. Ltd.

UNIX is a registered trademark of The Open Group in the US and other
countries.

.SH BUGS
Before reporting a bug to our bug-tracking system
\fIhttps://github.com/POV-Ray/povray/issues\fP you
should make sure you have the latest version of the software, in case the bug
has already been fixed. There are a large number of \fBPOV\-Ray\fP users on the
\fBPOV\-Ray\fP newsserver \fInews.povray.org\fP available by a web interface at:
http://news.povray.org/groups. You should try to find
help and assistance in there before lodging a bug report.

.SH AUTHORS
Primary POV-Ray v3.8 Architects/Developers: (Alphabetically)
.LP
  Chris Cason         Christoph Lipka
.LP
With Assistance From: (Alphabetically)
.LP
  Jerome Grimbert     James Holsenback    William F. Pokorny
.LP
Past Contributors: (Alphabetically)
.LP
  Steve Anger         Eric Barish         Dieter Bayer
  David K. Buck       Nicolas Calimet     Chris Cason
  Aaron A. Collins    Chris Dailey        Steve Demlow
  Andreas Dilger      Alexander Enzmann   Dan Farmer
  Thorsten Froehlich  Mark Gordon         Jerome Grimbert
  James Holsenback    Christoph Hormann   Mike Hough
  Chris Huff          Kari Kivisalo       Nathan Kopp
  Lutz Kretzschmar    Christoph Lipka     Jochen Lippert
  Pascal Massimino    Jim McElhiney       Douglas Muir
  Juha Nieminen       Ron Parker          William F. Pokorny
  Bill Pulver         Eduard Schwan       Wlodzimierz Skiba
  Robert Skinner      Yvo Smellenbergh    Zsolt Szalavari
  Scott Taylor        Massimo Valentini   Timothy Wegner
  Drew Wells          Chris Young
.LP
Other contributors are listed in the documentation at:
  http://wiki.povray.org/content/Documentation

.SH ACKNOWLEDGEMENT
\fBPOV\-Ray\fP is based on DKBTrace 2.12 by David K. Buck and
Aaron A. Collins.