| 2603 |
|
|
| 2604 |
|
Made reciprocity averaging default to "off" in bsdf2ttree, as it seems |
| 2605 |
|
to create more problems than it solves. |
| 2606 |
+ |
|
| 2607 |
+ |
==================== |
| 2608 |
+ |
Version 6.0 |
| 2609 |
+ |
|
| 2610 |
+ |
Extensive changes to enable spectral rendering, which defaults to "off" |
| 2611 |
+ |
to maintain backwards-compatibility with previous versions, with the |
| 2612 |
+ |
exception of the ambient file format, which is changed. The MAXCSAMP |
| 2613 |
+ |
macro, which defaults to 24, sets the maximum number of spectral samples. |
| 2614 |
+ |
The actual number of samples is set by the "-cs" option, which defaults |
| 2615 |
+ |
to 3 for rpict, rtrace, and rcontrib. The latter two programs support |
| 2616 |
+ |
straight spectral output, but rpict is initially restricted to |
| 2617 |
+ |
tristimulus output pictures. New pattern primitives "spectrum", |
| 2618 |
+ |
"specfile", and "specfunc" have been added as a means to specify |
| 2619 |
+ |
spectral reflectance, emittance, etc. to materials that still have |
| 2620 |
+ |
only 3 color channels. Those RGB channels will still affect the |
| 2621 |
+ |
spectrum if used. Unfortunately photon-mapping is currently broken when |
| 2622 |
+ |
spectral sampling is enabled, but we will fix this as soon as possible. |
| 2623 |
+ |
Calculation overhead appears to be approximately 10-15% for RGB |
| 2624 |
+ |
renderings compared to version 5.4a. |
| 2625 |
+ |
|
| 2626 |
+ |
Added spectral rendering to rvu as well, and made -cs and -cw |
| 2627 |
+ |
options standard across the rendering library. I also brought |
| 2628 |
+ |
mkillum, ranimove, rsensor, and mksource into the fold. These |
| 2629 |
+ |
tools were broken in the initial release. (Hopefully, they are |
| 2630 |
+ |
working now, but none have been tested as yet.) |
| 2631 |
+ |
There was also an indexing bug in the spectral->RGB conversions |
| 2632 |
+ |
that made reds into blues and vice versa, which has been fixed. |
| 2633 |
+ |
|
| 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. 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 |
+ |
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 |
+ |
|
| 2722 |
+ |
Wrote rxpiece tool that will render pictures using tiling and |
| 2723 |
+ |
can handle different output formats and hyperspectral pictures. |
| 2724 |
+ |
Only runs on a single machine, however -- now NFS locking on |
| 2725 |
+ |
shared volumes. Mainly a demonstration tool for RpictSimulManager |
| 2726 |
+ |
C++ class, but may have its uses. |
| 2727 |
+ |
|
| 2728 |
+ |
Fixed a bug in BSDF sampling of sources pointed out by |
| 2729 |
+ |
David Geisler-Moroder, which tended to overestimate specular |
| 2730 |
+ |
contributions for some BSDFs. |
