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

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.411 by greg, Sat Apr 9 17:18:08 2022 UTC vs.
Revision 1.449 by greg, Fri Apr 26 23:10:59 2024 UTC

+Slight change to vwrays -d option to not spit out "-ld-", and to
+produce "-ld+" without requiring input picture as argument.
-+
-+
+Added automatic overture calculation to rtpict with -n > 1 if
-+
+ambient cache is on and file is named.  If straight image output
-+
+is requested, we randomize all samples and avoid cache collisions.
-+
-+
+Added cnt -s option to shuffle output.
-+
-+
+Fixed issue with divide-by-zero errors in the ambient super-sampling
-+
+routine discovered by Jon Sargent of Solemma.  This affected regions
-+
+that had zero radiance, such as black backgrounds or unlit areas
-+
+with -av 0 0 0, when super-sampling was effectively disabled, causing
-+
+some loss in accuracy of the results.
-+
-+
+Updated Klems Half- and Quarter-bases to match angles currently used
-+
+in WINDOW.
-+
-+
+Eliminated most aiming failures for triangular light sources, at the
-+
+expense of conservative sampling near the centroid.  Thanks to
-+
+David Geisler-Moroder for his help on this.
-+
-+
+Increased maximum set size to 8191 to avoid set overflow errors.
-+
-+
+Added source obstruction test to statistics being kept on which
-+
+sources were visible in adaptive shadow testing code.  Previous
-+
+behavior was likely over-estimating source contributions.
-+
-+
+Added diffuse components into maximum directional hemispherical
-+
+reported by checkBSDF, so comparing to 100% is easier for each
-+
+component.
-+
-+
+Fixed incorrect calculations in iso2klems script, thanks to
-+
+help from Jacob Jonnson.
-+
-+
+Updated official copyright and license according to new wording
-+
+provided by Jean Haemmerle at the LBNL Intellectual Property Office.
-+
+Both were copied verbatim from e-mail I received from Taoning Wang
-+
+on 8/20/2022.
-+
-+
+Added -features option to rpict, rtrace, and rcontrib to check
-+
+which features are present or look for specific feature support.
-+
+This addition was suggested by Peter Apian-Bennewitz as an easier
-+
+way to determine which version of Radiance is installed and what
-+
+it supports, and is timely as we begin our refactoring of the
-+
+rendering code.  There are no current plans to add this to rvu.
-+
-+
+Added falsecolor -odim, -orct, and -c0 options to overlay grid of
-+
+values on image.  This was requested by Rob Shakespeare.
-+
-+
+Added -i* and -o* options in rhcopy for reading rays from the
-+
+standard input and writing rays from holodeck to standard output.
-+
+This will hopefully be useful in combining rholo with rcontrib.
-+
-+
+Added further checking for coincident (overlapping) flat surfaces,
-+
+preferring front sides to back sides in the ray intersection
-+
+calculation.  This only applies to rings and faces, as the other
-+
+surface types would have required additional calculations to
-+
+make them work.  Material transparency is still the primary
-+
+consideration, now followed by ray hit side, followed by
-+
+modifier definition order in the input.
-+
-+
+Increased octree and object limits to allow scenes with billions
-+
+of primitives.
-+
-+
+Made reciprocity averaging default to "off" in bsdf2ttree, as it seems
-+
+to create more problems than it solves.
-+
-+
+====================
-+
+Version 6.0
-+
-+
+Extensive changes to enable spectral rendering, which defaults to "off"
-+
+to maintain backwards-compatibility with previous versions, with the
-+
+exception of the ambient file format, which is changed.  The MAXCSAMP
-+
+macro, which defaults to 24, sets the maximum number of spectral samples.
-+
+The actual number of samples is set by the "-cs" option, which defaults
-+
+to 3 for rpict, rtrace, and rcontrib.  The latter two programs support
-+
+straight spectral output, but rpict is initially restricted to
-+
+tristimulus output pictures.  New pattern primitives "spectrum",
-+
+"specfile", and "specfunc" have been added as a means to specify
-+
+spectral reflectance, emittance, etc. to materials that still have
-+
+only 3 color channels.  Those RGB channels will still affect the
-+
+spectrum if used.  Unfortunately photon-mapping is currently broken when
-+
+spectral sampling is enabled, but we will fix this as soon as possible.
-+
+Calculation overhead appears to be approximately 10-15% for RGB
-+
+renderings compared to version 5.4a.
-+
-+
+Added spectral rendering to rvu as well, and made -cs and -cw
-+
+options standard across the rendering library.  I also brought
-+
+mkillum, ranimove, rsensor, and mksource into the fold.  These
-+
+tools were broken in the initial release.  (Hopefully, they are
-+
+working now, but none have been tested as yet.)
-+
+There was also an indexing bug in the spectral->RGB conversions
-+
+that made reds into blues and vice versa, which has been fixed.
-+
-+
+Added i/o for spectral pictures to rmtxop, the first program that can
-+
+ingest them.  (Only rtrace, rcontrib, and rfluxmtx can render them.)
-+
+New symbolic rmtxop -c options, such as RGB, XYZ, S (for scotopic)
-+
+and M (for melanopic) make color conversions simpler.  Alternatively,
-+
+a reference matrix or picture may be given and the color space of
-+
+that file will be used.  The -C option takes either a symbolic
-+
+color space or reference file and is "sticky," so it applies to
-+
+all subsequent input files that do not have their own -c right ahead
-+
+of them.
-+
-+
+Added spectral picture support to rcrop and radcompare.
-+
-+
+Added new utility, rcomb, which is something like a combination
-+
+of rmtxop and pcomb, it works with all the inputs and
-+
+outputs that rmtxop handles, but allows for general expressions
-+
+like those in pcomb for putting matrices together, working on
-+
+an element at a time.  (No resizing of matrices or accessing
-+
+neighboring elements, as permitted in pcomb.)  It saves memory
-+
+over rmtxop by operating on a row at a time, so can handle
-+
+input and output matrices with any number of rows.  It does
-+
+provide for a single matrix-multiplication operation at the end,
-+
+which only requires memory for that final matrix.
-+
-+
+Added support for filtering hyperspectral images to pfilt.
-+
-+
+Added support for 1- and 3-component float matrix i/o to
-+
+pcomb to allow for better interoperability.
-+
-+
+Added support for -co+ option to rtpict, so it can directly
-+
+produce hyperspectral images.
-+
-+
+Added new "specdata" and "specpict" primitives to support
-+
+interpolated spectral data files and hyperspectral images
-+
+as patterns.
-+
-+
+Added support for multispectal sampling in rsensor, which will
-+
+put out as many color channels as specified in any -cs option
-+
+(default is 3 for RGB).
-+
-+
+Added ability of mgf2rad to convert spectral data at least
-+
+for light, glow, plastic, and metal primitive types.  Need
-+
+to use new '-s' option to get new output.
-+
-+
+Added handling of spectral images to rcode2bmp script.
-+
-+
+Minor change to rcollate to allow explicit byte records to
-+
+be any specified length without checks against header input.
-+
-+
+Added new hemisphere type to rfluxmtx, "h=cie" for CIE sky
-+
+scanner positions.  These are 145 patches with identical
-+
+row counts to Tregenza, but starting from a different
-+
+azimuth and reversing row directions at adjacent altitudes.
-+
-+
+Added optimization for long argument lists and arrays in
-+
+the calcomp routines used for rendering and in rcalc, etc.
-+
-+
+Added error estimate spreading to ambient super-sampling
-+
+algorithm (-as) to improve performance especially in
-+
+scenes with sharp cut-offs.
-+
-+
+Added -i option to gendaymtx to match -i option of gendaylit.
-+
+Thanks to Yongqing for initial implementation.

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.411 by greg, Sat Apr 9 17:18:08 2022 UTC vs. Revision 1.449 by greg, Fri Apr 26 23:10:59 2024 UTC

Diff Legend

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.411 by greg, Sat Apr 9 17:18:08 2022 UTC vs.
Revision 1.449 by greg, Fri Apr 26 23:10:59 2024 UTC