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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.383 by greg, Fri Feb 12 01:04:39 2021 UTC vs.
Revision 1.394 by greg, Thu Sep 2 16:11:24 2021 UTC

# Line 2412 | Line 2412 | from Peter Apian-Bennewitz.
2412   Added explicit tests for on-edge intersections with polygons.  This should
2413   eliminate stray rays and tiny light leaks that often appear even in
2414   well-constructed geometry.
2415 +
2416 + Added "-s up" option to pabopto2bsdf to allow for 180 degree symmetry,
2417 + meaning that data repeats after 180 degree rotation (as distinguished
2418 + from "-s bilateral" whose data is mirrored about a vertical plane).
2419 + Thanks to Helen Rose Wilson for the suggestion and informing me that
2420 + such a thing exists.
2421 +
2422 + Removed upper limit on number of modifiers in rcontrib.
2423 +
2424 + Put cap on maximum ambient gradient to avoid over-extrapolation of
2425 + poorly computed irradiance cache values.
2426 +
2427 + Added robjutil +T option to triangulate all faces in .OBJ description.
2428 +
2429 + Altered BSDF library to have both front and back diffuse transmittance
2430 + values, which can be different.  This was necessary to avoid issues
2431 + caused by measurement and modeling discrepancies.
2432 +
2433 + Added pabopto2bsdf -g option to cull near-grazing scattering to avoid
2434 + issues with noise and negative values.
2435 +
2436 + Increased default dynamic range from 32 to 100 in pcond and normtiff.
2437 +
2438 + Added -o and -n options to genbox to create .OBJ output and segment
2439 + edges and corners for transparent materials.  Also added -s option
2440 + to control smoothing for .OBJ and Radiance with segmented rounding.
2441 +
2442 + Made it so robjutil with the +r option for Radiance output now
2443 + produces normal smoothing unless normals are removed with -n.
2444 +
2445 + Added exposure preservation to pcompos when possible (i.e., when
2446 + there is only one input or inputs agree on exposure).

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