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Comparing ray/doc/man/man1/rcontrib.1 (file contents):
Revision 1.14 by rschregle, Fri Jan 26 18:11:50 2018 UTC vs.
Revision 1.17 by greg, Sat Mar 14 16:25:46 2020 UTC

# Line 211 | Line 211 | Additional parameter values that apply only to this mo
211   with a
212   .I \-p
213   option, which contains a list of variable names and assigned values, separated
214 < by commas or semicolons.
214 > by commas, colons, or semicolons.
215   The computed bin value will be
216   rounded to the nearest whole number.
217   (Negative bin values will be silently ignored.)\0
# Line 287 | Line 287 | supports light source contributions from photon maps g
287   .I mkpmap(1)
288   with its
289   .I -apC
290 < option. In photon mapping mode,
290 > option. Enabling photon mapping is described in the
291 > .I rtrace
292 > man page along with its relevant settings. In photon mapping mode,
293   .I rcontrib
294   only supports contributions from light sources, not arbitrary modifiers.
295   The
# Line 297 | Line 299 | discussed above. Ray coefficients are also supported v
299   .I \-V-
300   option. Using fewer photons than there are light sources for the photon
301   density estimates results in omitted contributions, thus the bandwidth
302 < is clamped accordingly and a warning issued.
302 > is clamped accordingly and a warning is issued.
303   .SH EXAMPLES
304   To compute the proportional contributions from sources modified
305   by "light1" vs. "light2" on a set of illuminance values:
# Line 328 | Line 330 | rcontrib \-I+ \-h \-V \-fo \-o c_%s.dat \-M lights \-a
330   scene.oct < test.dat,
331   .SH ENVIRONMENT
332   RAYPATH         path to search for \-f and \-M files
333 + .SH BUGS
334 + We do not currently compute contributions or coefficients properly
335 + in scenes with participating media.
336 + A single warning will be issued if a scattering or absorbing medium
337 + is detected.
338   .SH AUTHOR
339   Greg Ward
340   .SH "SEE ALSO"

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