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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.404 by greg, Tue Mar 8 19:04:56 2022 UTC vs.
Revision 1.425 by greg, Thu Mar 16 00:25:24 2023 UTC

# Line 2517 | Line 2517 | often a loss even when VM was an issue.
2517  
2518   Added iso2klems script to compute a Klems BSDF based on specular
2519   and diffuse measurements as a function of incident angle.
2520 +
2521 + Fixed issue with over-counting diffuse component during aBSDF
2522 + peak extraction.
2523 +
2524 + Added dctimestep -x and -y options to specify image dimensions
2525 + for multiple outputs corresponding to result vectors.
2526 +
2527 + Added -P option to rcalc to pass formatted input when cond is <= 0.
2528 +
2529 + Created rcrop utility for cropping matrices and pictures more
2530 + conveniently, correcting view information.  Expect it to be handy
2531 + for extracting rows and columns from matrices, mostly.
2532 +
2533 + Changed pcomb so -o option elides original exposure values
2534 + from indented source headers.
2535 +
2536 + Added getinfo -r option, which is similar to -a except it will
2537 + replace indicated lines with new ones.
2538 +
2539 + Slight change to vwrays -d option to not spit out "-ld-", and to
2540 + produce "-ld+" without requiring input picture as argument.
2541 +
2542 + Added automatic overture calculation to rtpict with -n > 1 if
2543 + ambient cache is on and file is named.  If straight image output
2544 + is requested, we randomize all samples and avoid cache collisions.
2545 +
2546 + Added cnt -s option to shuffle output.
2547 +
2548 + Fixed issue with divide-by-zero errors in the ambient super-sampling
2549 + routine discovered by Jon Sargent of Solemma.  This affected regions
2550 + that had zero radiance, such as black backgrounds or unlit areas
2551 + with -av 0 0 0, when super-sampling was effectively disabled, causing
2552 + some loss in accuracy of the results.
2553 +
2554 + Updated Klems Half- and Quarter-bases to match angles currently used
2555 + in WINDOW.
2556 +
2557 + Eliminated most aiming failures for triangular light sources, at the
2558 + expense of conservative sampling near the centroid.  Thanks to
2559 + David Geisler-Moroder for his help on this.
2560 +
2561 + Increased maximum set size to 8191 to avoid set overflow errors.
2562 +
2563 + Added source obstruction test to statistics being kept on which
2564 + sources were visible in adaptive shadow testing code.  Previous
2565 + behavior was likely over-estimating source contributions.
2566 +
2567 + Added diffuse components into maximum directional hemispherical
2568 + reported by checkBSDF, so comparing to 100% is easier for each
2569 + component.
2570 +
2571 + Fixed incorrect calculations in iso2klems script, thanks to
2572 + help from Jacob Jonnson.
2573 +
2574 + Updated official copyright and license according to new wording
2575 + provided by Jean Haemmerle at the LBNL Intellectual Property Office.
2576 + Both were copied verbatim from e-mail I received from Taoning Wang
2577 + on 8/20/2022.
2578 +
2579 + Added -features option to rpict, rtrace, and rcontrib to check
2580 + which features are present or look for specific feature support.
2581 + This addition was suggested by Peter Apian-Bennewitz as an easier
2582 + way to determine which version of Radiance is installed and what
2583 + it supports, and is timely as we begin our refactoring of the
2584 + rendering code.  There are no current plans to add this to rvu.
2585 +
2586 + Added falsecolor -odim, -orct, and -c0 options to overlay grid of
2587 + values on image.  This was requested by Rob Shakespeare.
2588 +
2589 + Added -i* and -o* options in rhcopy for reading rays from the
2590 + standard input and writing rays from holodeck to standard output.
2591 + This will hopefully be useful in combining rholo with rcontrib.
2592 +
2593 + Added further checking for coincident (overlapping) flat surfaces,
2594 + preferring front sides to back sides in the ray intersection
2595 + calculation.  This only applies to rings and faces, as the other
2596 + surface types would have required additional calculations to
2597 + make them work.  Material transparency is still the primary
2598 + consideration, now followed by ray hit side, followed by
2599 + modifier definition order in the input.

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