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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.456 by greg, Wed Aug 14 20:05:23 2024 UTC vs.
Revision 1.479 by greg, Thu Mar 27 01:26:55 2025 UTC

# Line 2713 | Line 2713 | to Mike DiPompeo of LightStanza for reporting the issu
2713  
2714   Added rxpict rendering tool based on C++ RpictSimulManager class.
2715   Multi-processing and spectral output are supported.
2716 +
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 -- no NFS locking on
2720 + shared volumes.  Mainly a demonstration tool for RpictSimulManager
2721 + C++ class, but may have its uses.
2722 +
2723 + 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 accurate conversion of hyperspectral pictures to ra_xyze.
2741 +
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 + 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.

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