TACHYON(1) User Commands TACHYON(1)
NAME
Tachyon - parallel ray-tracer
DESCRIPTION
Tachyon Parallel/Multiprocessor Ray Tracer Version 0.98 Copyright 1994-2007, John E. Stone <johns@megapixel.com>
----------------------------------------------------------- Unrecognized parameter/option flag: --help Usage:
tachyon/usr/bin/tachyon modelfile [options]
Model file formats supported:
filename.dat -- The model files originated with this package. filaname.ac -- AC3D model files. filename.nff -- The NFF scene for-
mat used by Eric Haines' SPD.
Valid options: (** denotes default behaviour) ---------------------------------------------- Message Options:
+V verbose messages on
-V verbose messages off **
Speed Tuning Options:
-numthreads xxx
(** default is auto-determined)
-nobounding
-boundthresh xxx
(** default threshold is 16)
Shading Options:
-fullshade
best quality rendering (and slowest) **
-mediumshade
good quality rendering, but no shadows
-lowshade
low quality rendering, preview (and fast)
-lowestshade
worst quality rendering, preview (and fastest)
Lighting Options:
-rescale_lights xxx rescale light intensity values by
specified factor (performed before other lighting overrides take effect)
-auto_skylight xxx
force use of ambient occlusion lighting, auto-rescaling direct light sources to compensate for ambient occlusion factor. (use value
0.7 as a good starting point)
-add_skylight xxx
force use of ambient occlusion lighting, manually-rescaling direct light sources to compensate for ambient occlusion factor.
-skylight_samples xxx number of sample rays to shoot.
Specular Highlight Shading Options:
-shade_phong
Phong specular highlights
-shade_blinn
Blinn's specular highlights**
-shade_blinn_fast
fast approximation to Blinn's highlights
-shade_nullphong
disable specular highlights
Transparency Shading Options:
-trans_orig
Original implementation**
-trans_vmd
Opacity post-multiply used by VMD
Surface Normal/Winding Order Fixup Mode:
-normalfixup [off | flip | guess]
(**off is default)
Antialiasing Options:
-aasamples xxx
(maximum supersamples taken per pixel) (** default is 0, or scene file determined)
Output Options:
-res Xres Yres
override scene-defined output image size
-o outfile.tga
set output file name
-clamp clamp pixel values to [0 to 1) (** default)
-normalize
normalize pixel values to [0 to 1)
-gamma val
normalize apply gamma correction
-format BMP
24-bit Windows BMP (uncompressed)
-format JPEG
XXX Not compiled into this binary XXX
-format PNG
24-bit PNG (compressed, lossless)
-format PPM
24-bit PPM (uncompressed)
-format PPM48
48-bit PPM (uncompressed)
-format PSD48
48-bit PSD (uncompressed)
-format RGB
24-bit SGI RGB (uncompressed)
-format TARGA
24-bit Targa (uncompressed) **
Animation Related Options:
-camfile filename.cam
Animate using file of camera positions.
-nosave
Disable writing of output frames to disk (only used for doing real-time rendering)
Copyright 1994-2007, John E. Stone <johns@megapixel.com> ----------------------------------------------------------- Unrecognized param-
eter/option flag: --version Usage:
tachyon/usr/bin/tachyon modelfile [options]
Model file formats supported:
filename.dat -- The model files originated with this package. filaname.ac -- AC3D model files. filename.nff -- The NFF scene for-
mat used by Eric Haines' SPD.
Valid options: (** denotes default behaviour) ---------------------------------------------- Message Options:
+V verbose messages on
-V verbose messages off **
Speed Tuning Options:
-numthreads xxx
(** default is auto-determined)
-nobounding
-boundthresh xxx
(** default threshold is 16)
Shading Options:
-fullshade
best quality rendering (and slowest) **
-mediumshade
good quality rendering, but no shadows
-lowshade
low quality rendering, preview (and fast)
-lowestshade
worst quality rendering, preview (and fastest)
Lighting Options:
-rescale_lights xxx rescale light intensity values by
specified factor (performed before other lighting overrides take effect)
-auto_skylight xxx
force use of ambient occlusion lighting, auto-rescaling direct light sources to compensate for ambient occlusion factor. (use value
0.7 as a good starting point)
-add_skylight xxx
force use of ambient occlusion lighting, manually-rescaling direct light sources to compensate for ambient occlusion factor.
-skylight_samples xxx number of sample rays to shoot.
Specular Highlight Shading Options:
-shade_phong
Phong specular highlights
-shade_blinn
Blinn's specular highlights**
-shade_blinn_fast
fast approximation to Blinn's highlights
-shade_nullphong
disable specular highlights
Transparency Shading Options:
-trans_orig
Original implementation**
-trans_vmd
Opacity post-multiply used by VMD
Surface Normal/Winding Order Fixup Mode:
-normalfixup [off | flip | guess]
(**off is default)
Antialiasing Options:
-aasamples xxx
(maximum supersamples taken per pixel) (** default is 0, or scene file determined)
Output Options:
-res Xres Yres
override scene-defined output image size
-o outfile.tga
set output file name
-clamp clamp pixel values to [0 to 1) (** default)
-normalize
normalize pixel values to [0 to 1)
-gamma val
normalize apply gamma correction
-format BMP
24-bit Windows BMP (uncompressed)
-format JPEG
XXX Not compiled into this binary XXX
-format PNG
24-bit PNG (compressed, lossless)
-format PPM
24-bit PPM (uncompressed)
-format PPM48
48-bit PPM (uncompressed)
-format PSD48
48-bit PSD (uncompressed)
-format RGB
24-bit SGI RGB (uncompressed)
-format TARGA
24-bit Targa (uncompressed) **
Animation Related Options:
-camfile filename.cam
Animate using file of camera positions.
-nosave
Disable writing of output frames to disk (only used for doing real-time rendering)
SEE ALSO
The full documentation for Tachyon is maintained as a Texinfo manual. If the info and Tachyon programs are properly installed at your
site, the command
info Tachyon
should give you access to the complete manual.
Tachyon Parallel/Multiprocessor Ray Tracer Version 0.98 May 2008 TACHYON(1)