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

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.428 by greg, Wed Nov 15 18:02:52 2023 UTC vs.
Revision 1.493 by greg, Fri Jun 27 19:38:13 2025 UTC

+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
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+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.
-+
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+Added i/o for spectral pictures to rmtxop, the first program that can
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+ingest them.  (Only rtrace, rcontrib, and rfluxmtx can render them.)
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+New symbolic rmtxop -c options, such as RGB, XYZ, S (for scotopic)
-+
+and M (for melanopic) make color conversions simpler.  Alternatively,
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+a reference matrix or picture may be given and the color space of
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+that file will be used.  The -C option takes either a symbolic
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+color space or reference file and is "sticky," so it applies to
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+all subsequent input files that do not have their own -c right ahead
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+of them.
-+
-+
+Added spectral picture support to rcrop and radcompare.
-+
-+
+Added new utility, rcomb, which is something like a combination
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+of rmtxop and pcomb, it works with all the inputs and
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+outputs that rmtxop handles, but allows for general expressions
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+like those in pcomb for putting matrices together, working on
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+an element at a time.  (No resizing of matrices or accessing
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+neighboring elements, as permitted in pcomb.)  It saves memory
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+over rmtxop by operating on a row at a time, so can handle
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+input and output matrices with any number of rows.  It does
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+provide for a single matrix-multiplication operation at the end,
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+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
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+pcomb to allow for better interoperability.
-+
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+Added support for -co+ option to rtpict, so it can directly
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+produce hyperspectral images.
-+
-+
+Added new "specdata" and "specpict" primitives to support
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+interpolated spectral data files and hyperspectral images
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+as patterns.
-+
-+
+Added support for multispectal sampling in rsensor, which will
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+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 support for
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+new WGMDfunc type as well, which is considerably more flexible
-+
+at supporting different spectral components.
-+
-+
+Added handling of spectral pictures (HSR) to rcode2bmp script.
-+
-+
+Minor change to rcollate to allow explicit byte records to
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+be any specified length without checks against header input.
-+
-+
+Added new hemisphere type to rfluxmtx, "h=cie" for CIE sky
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+scanner positions.  These are 145 patches with identical
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+row counts to Tregenza, but starting from a different
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+azimuth and reversing row directions at adjacent altitudes.
-+
-+
+Added optimization for long argument lists and arrays in
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+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.
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+Thanks to Yongqing for initial implementation.
-+
-+
+Changed rcrop so negative #rows or #cols counts back from end.
-+
-+
+Added rcomb -n option for multi-processing of very large matrices.
-+
-+
+Made it so rsplit and rlam can handle any number of input files
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+up to active open file descriptor limit.
-+
-+
+Taoning Wang added genssky tool for generating spectral sky
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+descriptions.
-+
-+
+Taoning added gensdaymtx utility based on gendaymtx, and
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+added epw2wea -a option to include required information.
-+
-+
+Fixed bug introduced in Auguest 2022 (5.4 release) in distant
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+light source sampling, which caused aiming failures.  (Thanks
-+
+to Mike DiPompeo of LightStanza for reporting the issue.)
-+
-+
+Added rxpict rendering tool based on C++ RpictSimulManager class.
-+
+Multi-processing and spectral output are supported.
-+
-+
+Wrote rxpiece tool that will render pictures using tiling and
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+can handle different output formats and hyperspectral pictures.
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+Only runs on a single machine, however -- no NFS locking on
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+shared volumes.  Mainly a demonstration tool for RpictSimulManager
-+
+C++ class, but later added to standard Rmakefile targets.
-+
-+
+Fixed a bug in BSDF sampling of sources pointed out by
-+
+David Geisler-Moroder, which tended to overestimate specular
-+
+contributions for some BSDFs.
-+
-+
+Added crude ability to read and convert spectra to RGB in ximage,
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+ra_bmp, ra_ps, and ra_rgbe programs.  Also updated fast tone-mapping
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+library to handle spectral HSR inputs at the same time.  HSR
-+
+input handling was added in a similar fashion to pcond and pvalue
-+
+for convenience.
-+
-+
+Added handling of hyperspectral images to normtiff, a handy program
-+
+for quickly tone-mapping Radiance RGBE, XYZE, and now hyperspectral
-+
+pictures, as well as IEEE float or LogLuv TIFFs.
-+
-+
+Added handling of hyperspectral pictures to pextrem, though
-+
+results are still reported in RGB.
-+
-+
+Added accurate conversion of hyperspectral pictures to ra_xyze.
-+
-+
+Added hyperspectral picture conversion to ra_tiff, with accurate
-+
+color when targeting 16-bit/comp., LogLuv, and float output,
-+
+and the approximate method for 24-bit RGB.
-+
-+
+Taoning added genssky -L option to specify global and diffuse
-+
+illuminance values for output calibration.
-+
-+
+Created C++ class for rcontrib and example tool rxcontrib, which
-+
+is an optional compile in the src/rt directory.  The output
-+
+model is more general in some respects and the operations more
-+
+efficient, but standard output is not supported, nor is ASCII
-+
+results data.
-+
-+
+Added strnstr.c compatibility module in ray/src/common, since
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+it isn't present on Linux derivatives.
-+
-+
+Added WGMDfunc material type with programmable roughness and
-+
+separate modifier paths for the different components.
-+
-+
+Added gensurf -i option at the request of Peter Apian-Bennewitz
-+
+to reverse surface normals, mostly for data input, when it is
-+
+a bit more difficult to adjust.
-+
-+
+Added rad -N option to rholo call for multiprocessing when
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+mkillum and/or mkpmap are involved in octree prep.
-+
-+
+Added ability of gendaymtx to read EPW as well as WEA files.
-+
+When EPW input is provided, the 3-hour average dew point is
-+
+used to compute a more accurate precipitable water content
-+
+value.  It currently does not use these data directly from
-+
+the EPW input, relying instead on a dew-point-to-W calculation.
-+
+This follows the request and recommendations of David G-M.
-+
-+
+Removed limitation in rfluxmtx, which was disallowing distant
-+
+and local receivers. Found this to be a perfectly valid approach
-+
+for some annual daylighting scenarios.
-+
-+
+Wrote new pvsum tool to handle cases dctimestep can't, like
-+
+spectral input pictures.  It also adds a -N option for multi-
-+
+processing on Unix machines, which utilizes memory-mapped
-+
+inputs for efficient i/o sharing.
-+
-+
+Made it so genBSDF can use spectral rendering for a
-+
+more accurate photometric result.
-+
-+
+Changed default matrix representation to float rather than
-+
+double, which uses less RAM and supports faster operations
-+
+in general.  Build with compiler flag:
-+
+        -DDTnativeDTrmx_native=DTdouble
-+
+to get back higher precision representation.
-+
-+
+Taoning Wang updated genssky and gensdaymtx to provide illuminance
-+
+calibration and accept EPW files directly as input.
-+
-+
+Added -e expr and -f file.cal options to all rendering tools, not
-+
+just rcontrib/rxcontrib.  Feature request from Peter A-B.
-+
-+
+Fixed slight bias in indirect calculation caused by ambient
-+
+collision detection, pointed out by Jon Sargent.  New code
-+
+keeps track of rejected samples and sells them back to
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+later calls to get something closer to a true Poisson
-+
+sampling method.
-+
-+
+Altered rvu "origin" command to take shift amounts forward,
-+
+right, and up rather than taking an explicit origin, which
-+
+can be done easily enough with the "view" command.  Peter A-B
-+
+requested (sort of).
-+
-+
+Added genglaze tool created by Taoning Wang to generate
-+
+spectral glazing materials based on CGDB data and models.
-+
-+
+Fixed bug that caused inf and nan errors with -cw setting
-+
+where longer wavelength was substantially less than limits
-+
+of specified spectra.
-+
-+
+Created bsdfpeaks utility to identify and report full-width,
-+
+half-maximum sizes of peaks in SIR and XML inputs.
-+
-+
+Changed default super-sampling in bsdf2ttree from 256 to 64,
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+since there doesn't seem to be much benefit to the higher
-+
+sampling rate for most BSDFs.
-+
-+
+Fixed problem with "mirror" primitive, which was not permitting
-+
+indirect rays to transmit through alternate material type.
-+
+Thanks to Jon Sargent for finding problem and help resolving it.
-+
-+
+Added experimental C++ based rxpiece tool to default installation
-+
+in makeall/Rmakefile.
-+
-+
+Added rcomb -mt option to transpose concatenation matrix.

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.428 by greg, Wed Nov 15 18:02:52 2023 UTC vs. Revision 1.493 by greg, Fri Jun 27 19:38:13 2025 UTC

Diff Legend

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.428 by greg, Wed Nov 15 18:02:52 2023 UTC vs.
Revision 1.493 by greg, Fri Jun 27 19:38:13 2025 UTC