| 1636 |  |  | 
| 1637 |  | Adding ability in mkillum to incorporate BSDF data in calculation. | 
| 1638 |  | Internal interface (raypcalls) now used in place of rtrace process(es). | 
| 1639 | + |  | 
| 1640 | + | Fixed pixel alignment in pcomb for size reduction and enlargement. | 
| 1641 | + |  | 
| 1642 | + | Allow rtcontrib user to set -P and -PP options for persistent rendering. | 
| 1643 | + | The only caveat is that -n setting > 1 requires -PP rather than -P. | 
| 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 | + |  | 
| 1650 | + | ****** COMPATIBILITY CHANGE ******** | 
| 1651 | + | Fixed long-standing bug in source.cal, which caused it to produce | 
| 1652 | + | reversed anisotropic photometric distributions due to the | 
| 1653 | + | misorientation of the y-axis.  Thanks to Zack Rogers for discovering | 
| 1654 | + | and helping debug this problem. | 
| 1655 | + |  | 
| 1656 | + | Fixed long-standing bug in replmarks, where triangles with X-side | 
| 1657 | + | aligned with Z-axis would cause incorrect rotations.  Thanks to | 
| 1658 | + | Zack Rogers for finding this error. |