[ViewVC] Diff of: Development/ray/doc/notes/ReleaseNotes

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.387 by greg, Fri Feb 19 22:05:46 2021 UTC vs.
Revision 1.409 by greg, Fri Mar 18 18:31:47 2022 UTC

+Put cap on maximum ambient gradient to avoid over-extrapolation of
+poorly computed irradiance cache values.
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+Added robjutil +T option to triangulate all faces in .OBJ description.
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+Altered BSDF library to have both front and back diffuse transmittance
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+values, which can be different.  This was necessary to avoid issues
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+caused by measurement and modeling discrepancies.
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+Added pabopto2bsdf -g option to cull near-grazing scattering to avoid
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+issues with noise and negative values.
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+Increased default dynamic range from 32 to 100 in pcond and normtiff.
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+Added -o and -n options to genbox to create .OBJ output and segment
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+edges and corners for transparent materials.  Also added -s option
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+to control smoothing for .OBJ and Radiance with segmented rounding.
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+Made it so robjutil with the +r option for Radiance output now
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+produces normal smoothing unless normals are removed with -n.
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+Added exposure preservation to pcompos when possible (i.e., when
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+there is only one input or inputs agree on exposure).
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+Added -DSHARP_RGB compile-time option to use sharp RGB color space
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+rather than historic default.  This can make for more accurate color
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+calculations, but requires that materials be recalibrated.  The
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+PRIMARIES= line is also produced on output from rpict or rvu with
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+the correct set of primaries based on how the system was compiled.
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+Added automatic flushing to the output of total, except when the -r
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+(running subtotals) option is used.
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+Improved behavior of little-used -aw option, so that it avoids sea-level
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+rise caused by adding its own estimate back into the ambient level remainder.
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+It ended up being simple enough to derate the final average by the factor
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+corresponding to average surface absorpition, thus removing the average
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+from the final bounce estimate.
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+Introduced ies2rad upgrades by Randolph Fritz.  Randolph says it
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+fixes the following problems:
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+. Generates correct Radiance geometry for spheres in 1995, 2002,
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+        and 2019 IES files.
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+. Generates correct Radiance geometry for vertical cylinders that
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+        are taller than they are wide.
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+. Ignores the file source ("File Generation Type") field in the
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+version of the file, which would otherwise be incorrectly used
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+        as an output multiplier.
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+    It also offers the following enhancements:
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+. Shape information is included in the .rad file comments.
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+. 1995, 2002, and 2019-version luminous opening geometry is
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+        accounted for.
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+. The 2002 and 2019 IES file versions are recognized and
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+        processed appropriately.
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+. I have made an attempt to do something intelligent with less
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+        common "luminous opening" shapes in the 1995, 2002, and 2019 versions
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+        of the standard, though I have not implemented any support for new
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+        geometry; approximations are substituted and warning messages issued.
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+        Unfortunately, this code is not tested, since I don't have any IES
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+        files that use these shapes.
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+Added support for depth-of-field blurring in vwrays using -pd option.
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+Also, made -c count work with vwrays -i, producing multiple samples
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+per indicated pixel position.  At the same time, support for the -pd
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+option was added to rtpict, which calls on vwrays for its samples.
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+Fixed issue with BSDFs that didn't obey reciprocity, where direct
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+sampling wasn't following exactly with indirect sampling.  This was
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+discovered and reported by Jon Sargent.
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+Created checkBSDF tool to test XML BSDF reciprocity and perform similar
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+sanity checks.
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+Added -O option to pvalue and pextrem to report watts/sr/m^2 even if
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+picture is XYZE.
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+Made subtle changes to header i/o routines to preserve alignment in
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+binary file formats to enable memory-mapping.  Implemented memory-mapped
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+matrix loading in rmtxop for binary double files.
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+Removed ambient value sorting, which was written when ambient caches
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+could overwhelm available memory.  This is rarely the case these days,
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+and the added code complexity and updating of cache values with LRU
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+counts dirties pages that would otherwise remain clean, so it was
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+often a loss even when VM was an issue.
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+Added iso2klems script to compute a Klems BSDF based on specular
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+and diffuse measurements as a function of incident angle.
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+Fixed issue with over-counting diffuse component during aBSDF
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+peak extraction.
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+Added dctimestep -x and -y options to specify image dimensions
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+for multiple outputs corresponding to result vectors.
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+Added -P option to rcalc to pass formatted input when cond is <= 0.
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+Created rcrop utility for cropping matrices and pictures more
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+conveniently, correcting view information.  Expect it to be handy
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+for extracting rows and columns from matrices, mostly.
-+
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+Changed pcomb so -o option elides original exposure values
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+from indented source headers.

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.387 by greg, Fri Feb 19 22:05:46 2021 UTC vs. Revision 1.409 by greg, Fri Mar 18 18:31:47 2022 UTC

Diff Legend

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.387 by greg, Fri Feb 19 22:05:46 2021 UTC vs.
Revision 1.409 by greg, Fri Mar 18 18:31:47 2022 UTC