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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.390 by greg, Mon Apr 5 19:56:18 2021 UTC vs.
Revision 1.413 by greg, Mon Apr 11 04:03:36 2022 UTC

# Line 2432 | Line 2432 | caused by measurement and modeling discrepancies.
2432  
2433   Added pabopto2bsdf -g option to cull near-grazing scattering to avoid
2434   issues with noise and negative values.
2435 +
2436 + Increased default dynamic range from 32 to 100 in pcond and normtiff.
2437 +
2438 + Added -o and -n options to genbox to create .OBJ output and segment
2439 + edges and corners for transparent materials.  Also added -s option
2440 + to control smoothing for .OBJ and Radiance with segmented rounding.
2441 +
2442 + Made it so robjutil with the +r option for Radiance output now
2443 + produces normal smoothing unless normals are removed with -n.
2444 +
2445 + Added exposure preservation to pcompos when possible (i.e., when
2446 + there is only one input or inputs agree on exposure).
2447 +
2448 + Added -DSHARP_RGB compile-time option to use sharp RGB color space
2449 + rather than historic default.  This can make for more accurate color
2450 + calculations, but requires that materials be recalibrated.  The
2451 + PRIMARIES= line is also produced on output from rpict or rvu with
2452 + the correct set of primaries based on how the system was compiled.
2453 +
2454 + Added automatic flushing to the output of total, except when the -r
2455 + (running subtotals) option is used.
2456 +
2457 + Improved behavior of little-used -aw option, so that it avoids sea-level
2458 + rise caused by adding its own estimate back into the ambient level remainder.
2459 + It ended up being simple enough to derate the final average by the factor
2460 + corresponding to average surface absorpition, thus removing the average
2461 + from the final bounce estimate.
2462 +
2463 + Introduced ies2rad upgrades by Randolph Fritz.  Randolph says it
2464 + fixes the following problems:
2465 +
2466 +        1. Generates correct Radiance geometry for spheres in 1995, 2002,
2467 +        and 2019 IES files.
2468 +
2469 +        2. Generates correct Radiance geometry for vertical cylinders that
2470 +        are taller than they are wide.
2471 +
2472 +        3. Ignores the file source ("File Generation Type") field in the
2473 +        2019 version of the file, which would otherwise be incorrectly used
2474 +        as an output multiplier.
2475 +
2476 +    It also offers the following enhancements:
2477 +
2478 +        1. Shape information is included in the .rad file comments.
2479 +
2480 +        2. 1995, 2002, and 2019-version luminous opening geometry is
2481 +        accounted for.
2482 +
2483 +        3. The 2002 and 2019 IES file versions are recognized and
2484 +        processed appropriately.
2485 +
2486 +        4. I have made an attempt to do something intelligent with less
2487 +        common "luminous opening" shapes in the 1995, 2002, and 2019 versions
2488 +        of the standard, though I have not implemented any support for new
2489 +        geometry; approximations are substituted and warning messages issued.
2490 +        Unfortunately, this code is not tested, since I don't have any IES
2491 +        files that use these shapes.
2492 +
2493 + Added support for depth-of-field blurring in vwrays using -pd option.
2494 + Also, made -c count work with vwrays -i, producing multiple samples
2495 + per indicated pixel position.  At the same time, support for the -pd
2496 + option was added to rtpict, which calls on vwrays for its samples.
2497 +
2498 + Fixed issue with BSDFs that didn't obey reciprocity, where direct
2499 + sampling wasn't following exactly with indirect sampling.  This was
2500 + discovered and reported by Jon Sargent.
2501 +
2502 + Created checkBSDF tool to test XML BSDF reciprocity and perform similar
2503 + sanity checks.
2504 +
2505 + Added -O option to pvalue and pextrem to report watts/sr/m^2 even if
2506 + picture is XYZE.
2507 +
2508 + Made subtle changes to header i/o routines to preserve alignment in
2509 + binary file formats to enable memory-mapping.  Implemented memory-mapped
2510 + matrix loading in rmtxop for binary double files.
2511 +
2512 + Removed ambient value sorting, which was written when ambient caches
2513 + could overwhelm available memory.  This is rarely the case these days,
2514 + and the added code complexity and updating of cache values with LRU
2515 + counts dirties pages that would otherwise remain clean, so it was
2516 + 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.

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