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Revision 1.47 by greg, Mon Sep 20 16:26:57 2004 UTC vs.
Revision 1.48 by greg, Mon Sep 20 17:32:04 2004 UTC

# Line 1317 | Line 1317 | would deadlock upon termination.  The reason it never
1317   before is because I always closed processes in the reverse order
1318   of opening them in other programs.  I went through and found similar
1319   (potential) bugs in the rview device subprocess code and util/netproc.c.
1320 +
1321 + Corrected the normalization of the Gaussian reflectance model.  This will
1322 + cause an increase in specularity for low-lying light sources.
1323 + Thanks to Don Walters of Boeing and Arne Duer of the Univ. of Innsbruck
1324 + for pointing out this error.  The square root used for the two cosines
1325 + in the denominator of the normalization factor should not be present.
1326 + This was a serious mistake I made in the original model, which went
1327 + undiscovered (at least to my knowledge) for over a decade.  I think
1328 + Bruce Walter of Cornell may have known about it, but I never heard
1329 + the details of his discovery.

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