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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.236 by greg, Sat May 31 21:33:21 2014 UTC vs.
Revision 1.237 by greg, Thu Jun 19 16:26:55 2014 UTC

# Line 1940 | Line 1940 | rcollate, gendaymtx, and dctimestep.
1940   Created rmtxop utility to operate on multi-component matrices.  This
1941   facilitates some daylight matrix calculations, and provides a general
1942   tool for manipulating matrix data.
1943 +
1944 + ****** COMPATIBILITY CHANGE ********
1945 + Introduced new Hessian-based error control in irradiance caching (ambient)
1946 + calculation.  Since the format of the stored ambient values is different,
1947 + the old files will be rejected with an error message and must be removed.
1948 + The programs may be compiled with the -DOLDAMB option if this is a problem.

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