| 1966 |  | octree using -i option at the end instead of (or in addition to) a | 
| 1967 |  | list of scene files. | 
| 1968 |  |  | 
| 1969 | < | Added support for argument expansion to rfluxmtx. | 
| 1969 | > | Added support for argument expansion to rfluxmtx and bug fixes. | 
| 1970 | > |  | 
| 1971 | > | Fixed bug in indirect hemisphere sampling for some corner cases. | 
| 1972 | > |  | 
| 1973 | > | Added default specular lobe to BSDF interpolation. | 
| 1974 | > |  | 
| 1975 | > | Set minimum number of shadow checks before direct optimization (4). | 
| 1976 | > |  | 
| 1977 | > | (Above changes included in 4.2.1 patch release.) | 
| 1978 | > |  | 
| 1979 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1980 | > | Made header input and output the default behavior for dctimestep and | 
| 1981 | > | genskyvec. | 
| 1982 | > |  | 
| 1983 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1984 | > | Changed pabopto2bsdf default behavior to add 90-degree rotation | 
| 1985 | > | to bring pgII's definition of "up" in line with Klems axis | 
| 1986 | > | conventions.  Introduced a new header variable "upphi" to | 
| 1987 | > | control this added rotation.  Using "#upphi 90" in each | 
| 1988 | > | BSDF input file gets back the original behavior, where it | 
| 1989 | > | assumes that the up direction is 90-degrees from the X-axis. | 
| 1990 | > | The default value of 0 corresponds to PAB's definition of | 
| 1991 | > | the X-axis as being "up". | 
| 1992 | > |  | 
| 1993 | > | Fixed bug in rsensor related to having many rows (altitude) and | 
| 1994 | > | few columns (azimuth) in sensitivity file. | 
| 1995 | > |  | 
| 1996 | > | Fixed floating point round-off error in new Hessian calculation | 
| 1997 | > | for some sytems (Windows, primarily). | 
| 1998 | > |  | 
| 1999 | > | Fixed bug in tensor tree BSDF code that caused bus error on | 
| 2000 | > | some systems, and may have been source of other errors as well. | 
| 2001 | > |  | 
| 2002 | > | (Above changes included in 4.2.2 patch release.) | 
| 2003 | > |  | 
| 2004 | > | =================== | 
| 2005 | > | Version 5.0 | 
| 2006 | > |  | 
| 2007 | > | Improved ambient extrapolation to avoid zero values.  Actual | 
| 2008 | > | threshold set to 5% of recorded value. | 
| 2009 | > |  | 
| 2010 | > | Changed anisotropic Gaussian and Ashikhmin models so that | 
| 2011 | > | illegal orientation vectors are dealt with more gracefully. | 
| 2012 | > |  | 
| 2013 | > | Created wrapBSDF tool and incorporated into genBSDF along | 
| 2014 | > | with new rfluxmtx computation. | 
| 2015 | > |  | 
| 2016 | > | Initial check-in of Roland Schregle's photon map integration. | 
| 2017 | > | New 5.0a version designation as suggested by Andy McNeil. | 
| 2018 | > |  | 
| 2019 | > | Added left-hand coordinate sytems to rfluxmtx to correct | 
| 2020 | > | problems with coordinate axis orientations pointed out by | 
| 2021 | > | David Geisler-Moroder. | 
| 2022 | > |  | 
| 2023 | > | Added color output to genBSDF (+C option) and support for | 
| 2024 | > | color rendering of Klems data. |