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.\" RCSid "$Id: rpict.1,v 1.22 2018/01/26 18:30:27 rschregle Exp $" |
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.TH RTPICT 1 3/19/2018 RADIANCE |
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.SH NAME |
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rtpict - generate a RADIANCE picture using rtrace |
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.SH SYNOPSIS |
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.B rtpict |
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.B "-n N" |
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[ |
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.B "rpict options" |
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] |
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[ |
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.B @file |
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] |
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.B octree |
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.SH DESCRIPTION |
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.I Rtpict |
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is a script that generates a picture from the RADIANCE scene given in |
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.I octree |
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and sends it to the standard output, or to a file specified with the |
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.I \-o |
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option. |
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Most options and defaults are the same as |
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.I rpict(1), |
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although a few switches are silently ignored. |
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Options incompatible with multi-processing can generate an error. |
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.PP |
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The |
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.I rtrace(1) |
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tool is called with |
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.I vwrays(1) |
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to perform the actual work. |
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This enables the |
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.I \-n |
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option for multiprocessing on platforms that support it. |
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If the |
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.I \-n |
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option is not specified or is set to 1, then |
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.I rpict |
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is called directly. |
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There is no benefit in setting the number of processes to anything |
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greater than the number of virtual cores available on your machine. |
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Also, it is very important to set the |
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.I \-af |
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option if an irradiance cache is being generated; |
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otherwise, your speed-up will be far from linear. |
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.SH EXAMPLE |
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To render a scene with four processes: |
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.IP "" .2i |
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rtpict -n 4 -vf mypers.vf -ab 1 -af scene.amb scene.oct > scene_pers.hdr |
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.SH AUTHOR |
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Greg Ward |
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.SH "SEE ALSO" |
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getinfo(1), lookamb(1), mkpmap(1), oconv(1), pdfblur(1), pfilt(1), |
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pinterp(1), pmblur(1), printf(3), ra_rgbe(1), rad(1), rpiece(1), |
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rpict(1), rtrace(1), rvu(1) vwrays(1), |
