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

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.426 by greg, Fri Mar 17 20:43:16 2023 UTC vs.
Revision 1.474 by greg, Thu Jan 23 19:09:38 2025 UTC

+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
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+exception of the ambient file format, which is changed.  The MAXCSAMP
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+macro, which defaults to 24, sets the maximum number of spectral samples.
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+The actual number of samples is set by the "-cs" option, which defaults
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+to 3 for rpict, rtrace, and rcontrib.  The latter two programs support
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+straight spectral output, but rpict is initially restricted to
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+tristimulus output pictures.  New pattern primitives "spectrum",
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+"specfile", and "specfunc" have been added as a means to specify
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+spectral reflectance, emittance, etc. to materials that still have
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+only 3 color channels.  Those RGB channels will still affect the
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+spectrum if used.  Unfortunately photon-mapping is currently broken when
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+spectral sampling is enabled, but we will fix this as soon as possible.
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+Calculation overhead appears to be approximately 10-15% for RGB
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+renderings compared to version 5.4a.
-+
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+Added spectral rendering to rvu as well, and made -cs and -cw
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+options standard across the rendering library.  I also brought
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+mkillum, ranimove, rsensor, and mksource into the fold.  These
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+tools were broken in the initial release.  (Hopefully, they are
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+working now, but none have been tested as yet.)
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+There was also an indexing bug in the spectral->RGB conversions
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+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.)
-+
+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
-+
+of them.
-+
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+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
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+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
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+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
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+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
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+interpolated spectral data files and hyperspectral images
-+
+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 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
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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
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+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
-+
+up to active open file descriptor limit.
-+
-+
+Taoning Wang added genssky tool for generating spectral sky
-+
+descriptions.
-+
-+
+Taoning added gensdaymtx utility based on gendaymtx, and
-+
+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.
-+
+Only runs on a single machine, however -- now NFS locking on
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+shared volumes.  Mainly a demonstration tool for RpictSimulManager
-+
+C++ class, but may have its uses.
-+
-+
+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,
-+
+ra_bmp, ra_ps, and ra_rgbe programs.  Also updated fast tone-mapping
-+
+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 utput,
-+
+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 experimental source-skipping method to rpict for scenes
-+
+with large number of light sources.  Currently works with
-+
+rcontrib and separate srcsamp image-processing tool.  Controlling
-+
+rpict options are -dS for skip bitmap specification and -dC
-+
+for correction coefficient image.  Compile using -DSSKIPOPT
-+
+to include this option.
-+
-+
+Added strnstr.c compatibility module in ray/src/common, since
-+
+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.
-+
-+
+Simplified synchronization between processes sharing indirect
-+
+irradiance values via an ambient file. Removed file locking
-+
+operations in favor of simpler operation relying on O_APPEND flag.
-+
+Not sure if this will have any affect on shared filesystems, but
-+
+it should reduce overhead for massively parallel machines.
-+
-+
+Added rad -N option to rholo run for multiprocessing when
-+
+mkillum and/or mkpmap are involved in octree prep.

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.426 by greg, Fri Mar 17 20:43:16 2023 UTC vs. Revision 1.474 by greg, Thu Jan 23 19:09:38 2025 UTC

Diff Legend

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.426 by greg, Fri Mar 17 20:43:16 2023 UTC vs.
Revision 1.474 by greg, Thu Jan 23 19:09:38 2025 UTC