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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.447 by greg, Fri Feb 23 03:47:57 2024 UTC vs.
Revision 1.478 by greg, Wed Mar 19 01:18:20 2025 UTC

# Line 2686 | Line 2686 | azimuth and reversing row directions at adjacent altit
2686  
2687   Added optimization for long argument lists and arrays in
2688   the calcomp routines used for rendering and in rcalc, etc.
2689 +
2690 + Added error estimate spreading to ambient super-sampling
2691 + algorithm (-as) to improve performance especially in
2692 + scenes with sharp cut-offs.
2693 +
2694 + Added -i option to gendaymtx to match -i option of gendaylit.
2695 + Thanks to Yongqing for initial implementation.
2696 +
2697 + Changed rcrop so negative #rows or #cols counts back from end.
2698 +
2699 + Added rcomb -n option for multi-processing of very large matrices.
2700 +
2701 + Made it so rsplit and rlam can handle any number of input files
2702 + up to active open file descriptor limit.
2703 +
2704 + Taoning Wang added genssky tool for generating spectral sky
2705 + descriptions.
2706 +
2707 + Taoning added gensdaymtx utility based on gendaymtx, and
2708 + added epw2wea -a option to include required information.
2709 +
2710 + Fixed bug introduced in Auguest 2022 (5.4 release) in distant
2711 + light source sampling, which caused aiming failures.  (Thanks
2712 + to Mike DiPompeo of LightStanza for reporting the issue.)
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.

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