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

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.439 by greg, Tue Dec 12 16:31:45 2023 UTC vs.
Revision 1.493 by greg, Fri Jun 27 19:38:13 2025 UTC

+Added spectral picture support to rcrop and radcompare.
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+Added new utility, rcomb, which is hard to type and hard to
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+pronounce, and probably equally difficult to use.  Sort of a
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+combination of rmtxop and pcomb, it works with all the inputs and
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+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
+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
+Added support for -co+ option to rtpict, so it can directly
+produce hyperspectral images.
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+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.
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+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
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+(default is 3 for RGB).
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+Added ability of mgf2rad to convert spectral data at least
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+for light, glow, plastic, and metal primitive types.  Need
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+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
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+at supporting different spectral components.
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+Added handling of spectral pictures (HSR) to rcode2bmp script.
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+Minor change to rcollate to allow explicit byte records to
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+be any specified length without checks against header input.
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+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.
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+Added optimization for long argument lists and arrays in
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+the calcomp routines used for rendering and in rcalc, etc.
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+Added error estimate spreading to ambient super-sampling
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+algorithm (-as) to improve performance especially in
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+scenes with sharp cut-offs.
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+Added -i option to gendaymtx to match -i option of gendaylit.
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+Thanks to Yongqing for initial implementation.
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+Changed rcrop so negative #rows or #cols counts back from end.
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+Added rcomb -n option for multi-processing of very large matrices.
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+Made it so rsplit and rlam can handle any number of input files
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+up to active open file descriptor limit.
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+Taoning Wang added genssky tool for generating spectral sky
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+descriptions.
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+Taoning added gensdaymtx utility based on gendaymtx, and
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+added epw2wea -a option to include required information.
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+Fixed bug introduced in Auguest 2022 (5.4 release) in distant
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+light source sampling, which caused aiming failures.  (Thanks
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+to Mike DiPompeo of LightStanza for reporting the issue.)
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+Added rxpict rendering tool based on C++ RpictSimulManager class.
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+Multi-processing and spectral output are supported.
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+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
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+C++ class, but later added to standard Rmakefile targets.
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+Fixed a bug in BSDF sampling of sources pointed out by
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+David Geisler-Moroder, which tended to overestimate specular
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+contributions for some BSDFs.
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+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
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+input handling was added in a similar fashion to pcond and pvalue
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+for convenience.
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+Added handling of hyperspectral images to normtiff, a handy program
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+for quickly tone-mapping Radiance RGBE, XYZE, and now hyperspectral
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+pictures, as well as IEEE float or LogLuv TIFFs.
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+Added handling of hyperspectral pictures to pextrem, though
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+results are still reported in RGB.
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+Added accurate conversion of hyperspectral pictures to ra_xyze.
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+Added hyperspectral picture conversion to ra_tiff, with accurate
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+color when targeting 16-bit/comp., LogLuv, and float output,
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+and the approximate method for 24-bit RGB.
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+Taoning added genssky -L option to specify global and diffuse
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+illuminance values for output calibration.
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+Created C++ class for rcontrib and example tool rxcontrib, which
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+is an optional compile in the src/rt directory.  The output
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+model is more general in some respects and the operations more
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+efficient, but standard output is not supported, nor is ASCII
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+results data.
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+Added strnstr.c compatibility module in ray/src/common, since
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+it isn't present on Linux derivatives.
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+Added WGMDfunc material type with programmable roughness and
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+separate modifier paths for the different components.
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+Added gensurf -i option at the request of Peter Apian-Bennewitz
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+to reverse surface normals, mostly for data input, when it is
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+a bit more difficult to adjust.
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+Added rad -N option to rholo call for multiprocessing when
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+mkillum and/or mkpmap are involved in octree prep.
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+Added ability of gendaymtx to read EPW as well as WEA files.
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+When EPW input is provided, the 3-hour average dew point is
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+used to compute a more accurate precipitable water content
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+value.  It currently does not use these data directly from
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+the EPW input, relying instead on a dew-point-to-W calculation.
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+This follows the request and recommendations of David G-M.
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+Removed limitation in rfluxmtx, which was disallowing distant
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+and local receivers. Found this to be a perfectly valid approach
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+for some annual daylighting scenarios.
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+Wrote new pvsum tool to handle cases dctimestep can't, like
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+spectral input pictures.  It also adds a -N option for multi-
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+processing on Unix machines, which utilizes memory-mapped
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+inputs for efficient i/o sharing.
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+Made it so genBSDF can use spectral rendering for a
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+more accurate photometric result.
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+Changed default matrix representation to float rather than
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+double, which uses less RAM and supports faster operations
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+in general.  Build with compiler flag:
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+        -DDTnativeDTrmx_native=DTdouble
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+to get back higher precision representation.
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+Taoning Wang updated genssky and gensdaymtx to provide illuminance
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+calibration and accept EPW files directly as input.
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+Added -e expr and -f file.cal options to all rendering tools, not
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+just rcontrib/rxcontrib.  Feature request from Peter A-B.
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+Fixed slight bias in indirect calculation caused by ambient
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+collision detection, pointed out by Jon Sargent.  New code
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+keeps track of rejected samples and sells them back to
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+later calls to get something closer to a true Poisson
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+sampling method.
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+Altered rvu "origin" command to take shift amounts forward,
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+right, and up rather than taking an explicit origin, which
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+can be done easily enough with the "view" command.  Peter A-B
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+requested (sort of).
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+Added genglaze tool created by Taoning Wang to generate
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+spectral glazing materials based on CGDB data and models.
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+Fixed bug that caused inf and nan errors with -cw setting
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+where longer wavelength was substantially less than limits
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+of specified spectra.
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+Created bsdfpeaks utility to identify and report full-width,
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+half-maximum sizes of peaks in SIR and XML inputs.
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+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
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+sampling rate for most BSDFs.
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+Fixed problem with "mirror" primitive, which was not permitting
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+indirect rays to transmit through alternate material type.
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+Thanks to Jon Sargent for finding problem and help resolving it.
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+Added experimental C++ based rxpiece tool to default installation
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+in makeall/Rmakefile.
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+Added rcomb -mt option to transpose concatenation matrix.

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.439 by greg, Tue Dec 12 16:31:45 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 1.439 by greg, Tue Dec 12 16:31:45 2023 UTC vs.
Revision 1.493 by greg, Fri Jun 27 19:38:13 2025 UTC