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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.399 by greg, Tue Dec 7 23:49:50 2021 UTC vs.
Revision 1.403 by greg, Mon Mar 7 17:55:09 2022 UTC

# Line 2498 | Line 2498 | option was added to rtpict, which calls on vwrays for
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.

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