| 1140 |  | the stack limit. | 
| 1141 |  |  | 
| 1142 |  | ============================== | 
| 1143 | < | Version 3.6 | 
| 1143 | > | Version 3.6 (Released 10/21/04) | 
| 1144 |  |  | 
| 1145 |  | Modified 4-byte RGBE encoding routine to avoid problems | 
| 1146 |  | when one or two primary values is negative and the other(s) | 
| 1343 |  | correctly. | 
| 1344 |  |  | 
| 1345 |  | ===================== | 
| 1346 | < | Version 3.7 | 
| 1346 | > | Version 3.7 (Released 7/25/05) | 
| 1347 |  |  | 
| 1348 |  | Fixed bug in source occluder cache which caused consistency error | 
| 1349 |  | for distant sources and mist materials.  (Thanks to Mark Stock for | 
| 1489 |  | behavior so I documented it rather than changing it. | 
| 1490 |  |  | 
| 1491 |  | ===================== | 
| 1492 | < | Version 3.8 | 
| 1492 | > | Version 3.8 (Released 10/17/06) | 
| 1493 |  |  | 
| 1494 |  | Fixed Russian roulette ray termination, which was doing the opposite of | 
| 1495 |  | what it should have been doing, resulting in overestimated values below | 
| 1609 |  | Added -h option to pcompos and pcomb to eliminate verbose headers. | 
| 1610 |  |  | 
| 1611 |  | ===================== | 
| 1612 | < | Version 3.9 | 
| 1612 | > | Version 3.9 (Released 3/30/08) | 
| 1613 |  |  | 
| 1614 |  | Added -spec option to falsecolor to restore original spectral color scale. | 
| 1615 |  | Also added "-s auto" option to automatically set the maximum value. | 
| 1644 |  |  | 
| 1645 |  | Added -c option to rtcontrib to facilitate cumulative calculations. | 
| 1646 |  |  | 
| 1647 | – | Added ability to incorporate LBNL Window 6 bidirectional scattering | 
| 1648 | – | distribution function (BSDF) data in mkillum. | 
| 1649 | – |  | 
| 1647 |  | ****** COMPATIBILITY CHANGE ******** | 
| 1648 |  | Fixed long-standing bug in source.cal, which caused it to produce | 
| 1649 |  | reversed anisotropic photometric distributions due to the | 
| 1660 |  |  | 
| 1661 |  | Added "planisphere" (stereographic) fisheye view type for traditional | 
| 1662 |  | daylighting analysis.  Feature requested & explained by Axel Jacobs. | 
| 1663 | + |  | 
| 1664 | + | Modified -c option to rtcontrib so it can take a number of input | 
| 1665 | + | rays to average over, rather than only produce a single accumulated | 
| 1666 | + | record (which can now be done with -c 0). | 
| 1667 | + |  | 
| 1668 | + | ===================== | 
| 1669 | + | Version 4.0 (Released 3/12/10) | 
| 1670 | + |  | 
| 1671 | + | Added -n option to rvu to provide parallel rendering. | 
| 1672 | + |  | 
| 1673 | + | ****** COMPATIBILITY CHANGE ******** | 
| 1674 | + | Changed ".pic" extension to ".hdr" in all sources and documentation | 
| 1675 | + | to improve interoperability with other software, since this has become | 
| 1676 | + | the de facto extension for Radiance RGBE and XYZE pictures.  Since file | 
| 1677 | + | extensions were never more than a convention in Radiance, this does not | 
| 1678 | + | affect operation, but may require the update of scripts, etc. written | 
| 1679 | + | by others that assume the ".pic" suffix for Radiance output. | 
| 1680 | + |  | 
| 1681 | + | Added -N option to objview to support multiprocessing. | 
| 1682 | + |  | 
| 1683 | + | Improved sampling of circular sources (source, sphere, ring types) with | 
| 1684 | + | quite a bit of help from David Geisler-Moroder. | 
| 1685 | + |  | 
| 1686 | + | Added "rpict" and "rvu" variables to rad, and made these as well as | 
| 1687 | + | the "oconv", "mkillum" and "pfilt" variables accept an alternate | 
| 1688 | + | command path in each case.  Change suggested by Lars Grobe based | 
| 1689 | + | on similar Radzilla (radz) facility by Carsten Bauer. | 
| 1690 | + |  | 
| 1691 | + | Fixed rad -v N specification to use actual view name if one. | 
| 1692 | + |  | 
| 1693 | + | Fixed error in mkillum calculation where it neglected indirect | 
| 1694 | + | source contributions from BTDF illum's. | 
| 1695 | + |  | 
| 1696 | + | Added GMT and LATLONG header lines for Greenwich Mean Time and | 
| 1697 | + | degrees North Latitude / East Longitude. | 
| 1698 | + |  | 
| 1699 | + | Added gendaylit to distribution (finally). | 
| 1700 | + |  | 
| 1701 | + | Added ability in vwright(1) to get view from command line arguments. | 
| 1702 | + |  | 
| 1703 | + | Created genklemsamp(1) utility to generate samples suitable for | 
| 1704 | + | BSDF-based annual calculations.  This is the first Perl script to | 
| 1705 | + | be added to Radiance.  Hopefully, others will follow. | 
| 1706 | + |  | 
| 1707 | + | Added klems_int.cal file to compute Klems bins for windows. | 
| 1708 | + |  | 
| 1709 | + | Created genskyvec  utility to sample a particular sky and | 
| 1710 | + | evaluate average radiance over the standard Tregenza sky patches. | 
| 1711 | + |  | 
| 1712 | + | Created dctimestep program to compute a set of sensor values or | 
| 1713 | + | a combined image for a particular time using the daylight | 
| 1714 | + | coefficient method. | 
| 1715 | + |  | 
| 1716 | + | Created src/rt/rayfifo.c for first-in/first-out handling of | 
| 1717 | + | multiprocessing by raypcalls.c. | 
| 1718 | + |  | 
| 1719 | + | Added -n option to rtrace for executing on multiple cores | 
| 1720 | + | using new rayfifo calls. | 
| 1721 | + |  | 
| 1722 | + | ===================== | 
| 1723 | + | Version 4.1 | 
| 1724 | + |  | 
| 1725 | + | Changed ranimate behavior so remote login under a different user | 
| 1726 | + | doesn't necessarily require the presence of the originating user's | 
| 1727 | + | home directory. | 
| 1728 | + |  | 
| 1729 | + | Changed standard transmission function normalization back to what | 
| 1730 | + | it was in version 3.5, following recommendation of David Geisler-Moroder, | 
| 1731 | + | who pointed out that the revised BTDF increased too much at grazing. | 
| 1732 | + |  | 
| 1733 | + | Changed rad behavior with -N >1 on single view to call rpiece. | 
| 1734 | + |  | 
| 1735 | + | Updated SCons build system for MINGW compilation, thanks to Christian | 
| 1736 | + | Kohler. | 
| 1737 | + |  | 
| 1738 | + | Added -u option to rlam for unbuffered output. | 
| 1739 | + |  | 
| 1740 | + | Modified dctimestep to accept sky vector and daylight coefficient matrix | 
| 1741 | + | or list of images to sum together, as suggested by Andy McNeil. |