tachyon man page

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 format 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) **

Model file formats supported

filename.dat -- The model files originated with this package. filaname.ac -- AC3D model files. filename.nff -- The NFF scene format 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) **

Referenced By

tachyon-ogl(1) is an alias of tachyon(1).

May 2008 Tachyon Parallel/Multiprocessor Ray Tracer Version 0.98 User Commands