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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.430 by greg, Tue Nov 21 01:36:32 2023 UTC vs.
Revision 1.437 by greg, Sat Dec 9 23:46:51 2023 UTC

# Line 2633 | Line 2633 | that made reds into blues and vice versa, which has be
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, rmtxcomb, which is hard to type and hard to
2647 + pronounce, and probably equally difficult to use.  Sort of a
2648 + combination of rmtxop and pcomb, it works with all the inputs and
2649 + outputs that rmtxop handles, but allows for general expressions
2650 + like those in pcomb for putting matrices together, working on
2651 + an element at a time.  (No resizing of matrices or accessing
2652 + neighboring elements, as permitted in pcomb.)  It saves memory
2653 + over rmtxop by operating on a row at a time, so can handle
2654 + input and output matrices with any number of rows.  It does
2655 + provide for a single matrix-multiplication operation at the end,
2656 + which only requires memory for that final matrix.
2657 +
2658 + Added support for filtering hyperspectral images to pfilt.
2659 +
2660 + Added support for 1- and 3-component float matrix i/o to
2661 + pcomb to allow for better interoperability.

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