| 2634 |  | Added i/o for spectral pictures to rmtxop, the first program that can | 
| 2635 |  | ingest them.  (Only rtrace, rcontrib, and rfluxmtx can render them.) | 
| 2636 |  | New symbolic rmtxop -c options, such as RGB, XYZ, S (for scotopic) | 
| 2637 | < | and M (for melanopic) make color conversions simpler. | 
| 2638 | < | Also added spectral picture support to rcrop and radcompare. | 
| 2637 | > | and M (for melanopic) make color conversions simpler.  Alternatively, | 
| 2638 | > | a reference matrix or picture may be given and the color space of | 
| 2639 | > | that file will be used.  The -C option takes either a symbolic | 
| 2640 | > | color space or reference file and is "sticky," so it applies to | 
| 2641 | > | all subsequent input files that do not have their own -c right ahead | 
| 2642 | > | of them. | 
| 2643 | > |  | 
| 2644 | > | Added spectral picture support to rcrop and radcompare. | 
| 2645 | > |  | 
| 2646 | > | Added new utility, rcomb, which is something like a combination | 
| 2647 | > | of rmtxop and pcomb, it works with all the inputs and | 
| 2648 | > | outputs that rmtxop handles, but allows for general expressions | 
| 2649 | > | like those in pcomb for putting matrices together, working on | 
| 2650 | > | an element at a time.  (No resizing of matrices or accessing | 
| 2651 | > | neighboring elements, as permitted in pcomb.)  It saves memory | 
| 2652 | > | over rmtxop by operating on a row at a time, so can handle | 
| 2653 | > | input and output matrices with any number of rows.  It does | 
| 2654 | > | provide for a single matrix-multiplication operation at the end, | 
| 2655 | > | which only requires memory for that final matrix. | 
| 2656 | > |  | 
| 2657 | > | Added support for filtering hyperspectral images to pfilt. | 
| 2658 | > |  | 
| 2659 | > | Added support for 1- and 3-component float matrix i/o to | 
| 2660 | > | pcomb to allow for better interoperability. | 
| 2661 | > |  | 
| 2662 | > | Added support for -co+ option to rtpict, so it can directly | 
| 2663 | > | produce hyperspectral images. | 
| 2664 | > |  | 
| 2665 | > | Added new "specdata" and "specpict" primitives to support | 
| 2666 | > | interpolated spectral data files and hyperspectral images | 
| 2667 | > | as patterns. | 
| 2668 | > |  | 
| 2669 | > | Added support for multispectal sampling in rsensor, which will | 
| 2670 | > | put out as many color channels as specified in any -cs option | 
| 2671 | > | (default is 3 for RGB). | 
| 2672 | > |  | 
| 2673 | > | Added ability of mgf2rad to convert spectral data at least | 
| 2674 | > | for light, glow, plastic, and metal primitive types.  Need | 
| 2675 | > | to use new '-s' option to get new output. | 
| 2676 | > |  | 
| 2677 | > | Added handling of spectral images to rcode2bmp script. | 
| 2678 | > |  | 
| 2679 | > | Minor change to rcollate to allow explicit byte records to | 
| 2680 | > | be any specified length without checks against header input. | 
| 2681 | > |  | 
| 2682 | > | Added new hemisphere type to rfluxmtx, "h=cie" for CIE sky | 
| 2683 | > | scanner positions.  These are 145 patches with identical | 
| 2684 | > | row counts to Tregenza, but starting from a different | 
| 2685 | > | azimuth and reversing row directions at adjacent altitudes. | 
| 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. |