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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.464 by greg, Fri Oct 4 01:53:45 2024 UTC vs.
Revision 1.486 by greg, Mon May 5 19:20:16 2025 UTC

# Line 2714 | Line 2714 | to Mike DiPompeo of LightStanza for reporting the issu
2714   Added rxpict rendering tool based on C++ RpictSimulManager class.
2715   Multi-processing and spectral output are supported.
2716  
2717 Added crude ability to read and convert spectra to RGB in ximage,
2718 ra_bmp, and ra_rgbe programs.  Also updated fast tone-mapping
2719 library to handle spectral HSR inputs at the same time.  HSR
2720 input handling was added in a similar fashion to pcond and pvalue.
2721
2717   Wrote rxpiece tool that will render pictures using tiling and
2718   can handle different output formats and hyperspectral pictures.
2719 < Only runs on a single machine, however -- now NFS locking on
2719 > Only runs on a single machine, however -- no NFS locking on
2720   shared volumes.  Mainly a demonstration tool for RpictSimulManager
2721   C++ class, but may have its uses.
2722  
# Line 2729 | Line 2724 | Fixed a bug in BSDF sampling of sources pointed out by
2724   David Geisler-Moroder, which tended to overestimate specular
2725   contributions for some BSDFs.
2726  
2727 + Added crude ability to read and convert spectra to RGB in ximage,
2728 + ra_bmp, ra_ps, and ra_rgbe programs.  Also updated fast tone-mapping
2729 + library to handle spectral HSR inputs at the same time.  HSR
2730 + input handling was added in a similar fashion to pcond and pvalue
2731 + for convenience.
2732 +
2733 + Added handling of hyperspectral images to normtiff, a handy program
2734 + for quickly tone-mapping Radiance RGBE, XYZE, and now hyperspectral
2735 + pictures, as well as IEEE float or LogLuv TIFFs.
2736 +
2737   Added handling of hyperspectral pictures to pextrem, though
2738   results are still reported in RGB.
2739  
2740 < Added conversion of hyperspectral pictures to ra_xyze, although
2736 < it is even slower than rcomb for this process.  It is more
2737 < accurate than most of the other tools, at least.
2740 > Added accurate conversion of hyperspectral pictures to ra_xyze.
2741  
2742 < Added handling of hyperspectral images to normtiff, a little-used
2743 < but handy program for quickly tone-mapping pictures and TIFFs.
2742 > Added hyperspectral picture conversion to ra_tiff, with accurate
2743 > color when targeting 16-bit/comp., LogLuv, and float utput,
2744 > and the approximate method for 24-bit RGB.
2745  
2746 < Added conversion of hyperspectral pictures to ra_ps using
2747 < approximate color method.
2746 > Taoning added genssky -L option to specify global and diffuse
2747 > illuminance values for output calibration.
2748 >
2749 > Created C++ class for rcontrib and example tool rxcontrib, which
2750 > is an optional compile in the src/rt directory.  The output
2751 > model is more general in some respects and the operations more
2752 > efficient, but standard output is not supported, nor is ASCII
2753 > results data.
2754 >
2755 > Added strnstr.c compatibility module in ray/src/common, since
2756 > it isn't present on Linux derivatives.
2757 >
2758 > Added WGMDfunc material type with programmable roughness and
2759 > separate modifier paths for the different components.
2760 >
2761 > Added gensurf -i option at the request of Peter Apian-Bennewitz
2762 > to reverse surface normals, mostly for data input, when it is
2763 > a bit more difficult to adjust.
2764 >
2765 > Added rad -N option to rholo call for multiprocessing when
2766 > mkillum and/or mkpmap are involved in octree prep.
2767 >
2768 > Added ability of gendaymtx to read EPW as well as WEA files.
2769 > When EPW input is provided, the 3-hour average dew point is
2770 > used to compute a more accurate precipitable water content
2771 > value.  It currently does not use these data directly from
2772 > the EPW input, relying instead on a dew-point-to-W calculation.
2773 > This follows the request and recommendations of David G-M.
2774 >
2775 > Removed limitation in rfluxmtx, which was disallowing distant
2776 > and local receivers. Found this to be a perfectly valid approach
2777 > for some annual daylighting scenarios.
2778 >
2779 > Wrote new pvsum tool to handle cases dctimestep can't, like
2780 > spectral input pictures.  It also adds a -N option for multi-
2781 > processing on Unix machines, which utilizes memory-mapped
2782 > inputs for efficient i/o sharing.
2783 >
2784 > Made it so genBSDF can use spectral rendering for a
2785 > more accurate photometric result.
2786 >
2787 > Changed default matrix representation to float rather than
2788 > double, which uses less RAM and supports faster operations
2789 > in general.  Build with compiler flag:
2790 >        -DDTnativeDTrmx_native=DTdouble
2791 > to get back higher precision representation.
2792 >
2793 > Taoning Wang updated genssky and gensdaymtx to provide illuminance
2794 > calibration and accept EPW files directly as input.
2795 >
2796 > Added -e expr and -f file.cal options to all rendering tools, not
2797 > just rcontrib/rxcontrib.  Feature request from Peter A-B.
2798 >
2799 > Fixed slight bias in indirect calculation caused by ambient
2800 > collision detection, pointed out by Jon Sargent.  New code
2801 > keeps track of rejected samples and sells them back to
2802 > later calls to get something closer to a true Poisson
2803 > sampling method.
2804 >
2805 > Altered rvu "origin" command to take shift amounts forward,
2806 > right, and up rather than taking an explicit origin, which
2807 > can be done easily enough with the "view" command.  Peter A-B
2808 > requested (sort of).
2809 >
2810 > Added genglaze tool created by Taoning Wang to generate
2811 > spectral glazing materials based on CGDB data and models.

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