| 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 | 
| 1382 |  | Fixed bug that caused incorrect reporting of non-surface in set when | 
| 1383 |  | mixing meshes and instances.  (Thanks to Jack de Valpine for discovery.) | 
| 1384 |  |  | 
| 1385 | < | Fixed innacuracy in calculation of diffuse transmission in the presence | 
| 1385 | > | Fixed inaccuracy in calculation of diffuse transmission in the presence | 
| 1386 |  | of pure specular (Fresnel reflection) using "trans" material.  Thanks | 
| 1387 |  | to Christoph Reinhart for pointing out the error. | 
| 1388 |  |  | 
| 1457 |  | rtrace.  This permits ray trees to be parsed more easily in binary | 
| 1458 |  | output mode, as needed by rtcontrib. | 
| 1459 |  |  | 
| 1460 | < | Implemented Russian roulette ray termination with -lr set to 0.  Made | 
| 1461 | < | this the default in rtcontrib. | 
| 1460 | > | Implemented Russian roulette ray termination with -lr <= 0. | 
| 1461 | > | Made -lr -10 the default in rtcontrib. | 
| 1462 | > |  | 
| 1463 | > | Made rtcontrib -f option search RAYPATH directories. | 
| 1464 | > |  | 
| 1465 | > | Made it so -o option of rtcontrib can pipe -o output to a command. | 
| 1466 | > |  | 
| 1467 | > | Added -if and -of options to total for binary i/o (following rcalc mold). | 
| 1468 | > |  | 
| 1469 | > | Switched default options in rtrace to use Russian roulette.  (Rpict and rvu | 
| 1470 | > | still use biased ray termination.) | 
| 1471 | > |  | 
| 1472 | > | Added rtcontrib -r option to recover partial output. | 
| 1473 | > |  | 
| 1474 | > | Added -u rendering option for pure Monte Carlo sampling. | 
| 1475 | > | (Got rid of -DMC compile option, which this makes superfluous.) | 
| 1476 | > |  | 
| 1477 | > | Changed -t option of rlam to accept strings as well as single characters. | 
| 1478 | > |  | 
| 1479 | > | Fixed bug in rcalc with -l option where it would sometimes go into an | 
| 1480 | > | infinite loop. | 
| 1481 | > |  | 
| 1482 | > | Fixed truly ancient bug in bounding box computation for cones, which | 
| 1483 | > | could (and did) cause missing segments. | 
| 1484 | > |  | 
| 1485 | > | Added -z option to normtiff to output LZW-compressed files. | 
| 1486 | > |  | 
| 1487 | > | Last change to total causes it to produce results when it sees an empty | 
| 1488 | > | line on the input.  This was not intentional, but I decided I like this | 
| 1489 | > | behavior so I documented it rather than changing it. | 
| 1490 | > |  | 
| 1491 | > | ===================== | 
| 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 | 
| 1496 | > | minimum ray sampling weight (serious). | 
| 1497 | > |  | 
| 1498 | > | Changed mksource to use 98th percentile (rather than 99th) for threshold. | 
| 1499 | > |  | 
| 1500 | > | (Above changes included in 3.7.1 patch release.) | 
| 1501 | > |  | 
| 1502 | > | Eliminated writing of EXPOSURE= line in ra_tiff -r when source TIFF | 
| 1503 | > | does not have STONITS set. | 
| 1504 | > |  | 
| 1505 | > | Fixed bug in ambient calculation that caused black values for multiple | 
| 1506 | > | bounces in some scenes.  Thanks to Mark Stock for creating and sharing | 
| 1507 | > | the sophisticated test scene that demonstrated this problem. | 
| 1508 | > |  | 
| 1509 | > | Fixed bug in antimatter using Russian Roulette sampling. | 
| 1510 | > |  | 
| 1511 | > | (Above changes included in 3.7.2 patch release 22 Aug 2005.) | 
| 1512 | > |  | 
| 1513 | > | Created fieldcomb script to combine alternate fields in a rendering | 
| 1514 | > | sequence.  (Development generously sponsored by Iebele Abel.) | 
| 1515 | > |  | 
| 1516 | > | Added missing preload of mesh objects for more efficient memory use | 
| 1517 | > | during parallel rendering -- this was a serious oversight. | 
| 1518 | > |  | 
| 1519 | > | Created ran2tiff program to automate exposure setting of animation | 
| 1520 | > | sequences using a moving histogram in combination with pcond, and | 
| 1521 | > | converting frames to TIFF. | 
| 1522 | > |  | 
| 1523 | > | Eliminated SPEED macro from makeall and source tree. | 
| 1524 | > |  | 
| 1525 | > | Added -pj option to vwrays to allow jittering of sample locations. | 
| 1526 | > |  | 
| 1527 | > | Fixed bug in rtcontrib where it occasionally missed writing the | 
| 1528 | > | final bin file.  (Pretty serious, actually.) | 
| 1529 | > |  | 
| 1530 | > | Added -Dfseeko=fseek to MACH= line for linux, as fseeko(3) seems to be | 
| 1531 | > | broken in current versions of Linux.  (Need to remove this later.) | 
| 1532 | > |  | 
| 1533 | > | Rearranged struct's for better efficiency on 64-bit architectures. | 
| 1534 | > |  | 
| 1535 | > | Added -i option to rlam so it works with binary input formats. | 
| 1536 | > |  | 
| 1537 | > | Added rtcontrib -bn option to specify number of bins and fixed bug | 
| 1538 | > | in recovery of files containing multiple values per record. | 
| 1539 | > |  | 
| 1540 | > | Added rtcontrib -fo option to write over existing files, which it now | 
| 1541 | > | refuses to do without this option. | 
| 1542 | > |  | 
| 1543 | > | Made rtcontrib flush output when handed a zero-length ray vector, | 
| 1544 | > | to match behavior of rtrace. | 
| 1545 | > |  | 
| 1546 | > | Improved color scale for falsecolor output. | 
| 1547 | > |  | 
| 1548 | > | Added threshold test for Fresnel approximation to prevent its use | 
| 1549 | > | on smooth surfaces with unrealistically low specularities (less than 1.8%). | 
| 1550 | > | Water has a specular reflectance of 2.1% at room temperture. | 
| 1551 | > |  | 
| 1552 | > | Removed NICE macro settings in rpict and rtrace, which was slowing down | 
| 1553 | > | the processes under Mac OS X (10.4) by about 60% due to processor napping. | 
| 1554 | > |  | 
| 1555 | > | Made xform, replmarks and rad2mgf handle quoted modifiers and names properly. | 
| 1556 | > |  | 
| 1557 | > | Fixed problem in genblinds, where it was generating slats that were too | 
| 1558 | > | wide with the +/-r option.  (Thanks to Helena Buelow-Huebe for discovering | 
| 1559 | > | this bug.) | 
| 1560 | > |  | 
| 1561 | > | Fixed bug in ra_ppm for 16-bit/sample i/o, where it was getting the byte | 
| 1562 | > | order wrong (apparently). | 
| 1563 | > |  | 
| 1564 | > | Added -V option to rtcontrib to report actual contributions, rather than | 
| 1565 | > | just ray coefficients. | 
| 1566 | > |  | 
| 1567 | > | Fixed bug in ranimate that caused it to fail in continuation of renderings. | 
| 1568 | > |  | 
| 1569 | > | Renamed librt.a to librtrad.a, to avoid conflict on Solaris. Almost | 
| 1570 | > | everything now gets linked to -lrtrad instead of -lrt. | 
| 1571 | > |  | 
| 1572 | > | Fixed problem with large sample sets, so -u+ option now is truly random. | 
| 1573 | > | Thanks to Rick Mistrick and Younju Yoon for identifying this problem, | 
| 1574 | > | which was related to a poorly designed hash function. | 
| 1575 | > |  | 
| 1576 | > | Changed -u+ to be the default setting in rtrace (only). | 
| 1577 | > |  | 
| 1578 | > | Fixed binary i/o for rlam and vwrays under Windows. | 
| 1579 | > |  | 
| 1580 | > | Added tmCvLums() to tone-mapping routines using a 16-bit lookup table | 
| 1581 | > | on IEEE floats, which is also used to improve speed of COLOR conversions, | 
| 1582 | > | especially on machines with slow log() calls.  The first call to | 
| 1583 | > | tmCvLums(), tmCvGrays(), or tmCvColors() initializes the table. | 
| 1584 | > |  | 
| 1585 | > | Created optics2rad.csh script to convert from Optics 5 material output | 
| 1586 | > | to something correct for Radiance.  Built on old glazing.cal function, | 
| 1587 | > | which is actually incorrect so removed from the distribution. | 
| 1588 | > |  | 
| 1589 | > | Fixed nuisance bug in ximage under some SGI machines that caused it to | 
| 1590 | > | choose an inappropriate visual and display incorrect colors.  (Thanks | 
| 1591 | > | to Oskar Itzinger for debugging the problem.) | 
| 1592 | > |  | 
| 1593 | > | Fixed long-standing inaccuracy of pcompos -t and +t thresholding options. | 
| 1594 | > |  | 
| 1595 | > | Fixed bug in handling of views with tabs rather than spaces. | 
| 1596 | > |  | 
| 1597 | > | Fixed bug related to alias of alias. | 
| 1598 | > |  | 
| 1599 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1600 | > | Changed default sky turbidity in gensky from the original default of | 
| 1601 | > | 2.75 to the CIE 110-1994 standard value of 2.45.  Thanks to Marilyne | 
| 1602 | > | Anderson of MIT for pointing out this discrepancy. | 
| 1603 | > |  | 
| 1604 | > | Added -o option to ra_xyze to produce original pixel values. | 
| 1605 | > |  | 
| 1606 | > | Fixed bug in tracing of virtual sources, where intervening glazing was | 
| 1607 | > | not being accounted for properly. | 
| 1608 | > |  | 
| 1609 | > | Added -h option to pcompos and pcomb to eliminate verbose headers. | 
| 1610 | > |  | 
| 1611 | > | ===================== | 
| 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. | 
| 1616 | > |  | 
| 1617 | > | Added byte-swapping input and output to rcalc. | 
| 1618 | > |  | 
| 1619 | > | Additional error-checking for source surfaces. | 
| 1620 | > |  | 
| 1621 | > | Re-fixed bug in octree code that caused it to allocate 8 times as | 
| 1622 | > | much memory as it actually used(!) -- this was pointed out way back | 
| 1623 | > | in 1999 by Erik Reinhard and Erik Jansen, but the fix they gave me | 
| 1624 | > | got lost in the slightly broken release process at the time.  This | 
| 1625 | > | should make a big difference in memory usage, especially for the | 
| 1626 | > | new mesh primitive.  (I measured 30% less memory usage.) | 
| 1627 | > |  | 
| 1628 | > | Corrected ray weights for material mixtures. | 
| 1629 | > |  | 
| 1630 | > | Reduced the default -n setting for obj2mesh to take better advantage | 
| 1631 | > | of the smaller octree structure size. | 
| 1632 | > |  | 
| 1633 | > | Fixed bug in shadow cache where it was adding surfaces with antimatter | 
| 1634 | > | holes cut in them to the obstructor list.  Thanks to John Mardaljevic | 
| 1635 | > | for discovering and reporting the problem. | 
| 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 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1648 | > | Fixed long-standing bug in source.cal, which caused it to produce | 
| 1649 | > | reversed anisotropic photometric distributions due to the | 
| 1650 | > | misorientation of the y-axis.  Thanks to Zack Rogers for discovering | 
| 1651 | > | and helping debug this problem. | 
| 1652 | > |  | 
| 1653 | > | Fixed long-standing bug in replmarks, where triangles with X-side | 
| 1654 | > | aligned with Z-axis would cause incorrect rotations.  Thanks to | 
| 1655 | > | Zack Rogers for finding this error. | 
| 1656 | > |  | 
| 1657 | > | Added rsensor program to compute sensor signal for daylighting controls. | 
| 1658 | > | Funding for this component was provided by the Architectural Energy | 
| 1659 | > | Corporation in Boulder, CO, and directed by Zack Rogers. | 
| 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 (Released 11/04/2011) | 
| 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. | 
| 1742 | > |  | 
| 1743 | > | Created genBSDF script to generate BSDF in Windows XML format. | 
| 1744 | > |  | 
| 1745 | > | Modified mkillum to accept detailed geometry from BSDF XML files. | 
| 1746 | > |  | 
| 1747 | > | Altered obj2rad to ignore zero normals (thanks to Jack de Valpine for | 
| 1748 | > | suggestions and help). | 
| 1749 | > |  | 
| 1750 | > | Fixed bug in genklemsamp that caused non-uniform sampling over surfaces. | 
| 1751 | > |  | 
| 1752 | > | Fixed bugs in rhoptimize and rhcopy for 64-bit compilation. | 
| 1753 | > |  | 
| 1754 | > | Made a change to avoid problem using gcc --fast-math compile option. | 
| 1755 | > |  | 
| 1756 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1757 | > | Changed behavior of rtrace and rtcontrib so that every scanline is | 
| 1758 | > | not flushed when both -x and -y are set.  This avoids flush delays | 
| 1759 | > | in rtcontrib for large numbers of output files and delays while | 
| 1760 | > | rendering images using rtrace with the -n option. | 
| 1761 | > |  | 
| 1762 | > | Added ability for rsensor to output ray origins and directions | 
| 1763 | > | rather than actually loading octree and computing sensor value. | 
| 1764 | > |  | 
| 1765 | > | Fixed old bug in obj2rad where it would stop processing and | 
| 1766 | > | report a syntax error if the "void" type is used in the map file. | 
| 1767 | > |  | 
| 1768 | > | Updated reflection model according to EGSR 2010 paper by David | 
| 1769 | > | Geisler-Moroder and Arne Duer. | 
| 1770 | > |  | 
| 1771 | > | Replaced C-shell version of falsecolor with Perl script written | 
| 1772 | > | by Axel Jacobs. | 
| 1773 | > |  | 
| 1774 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1775 | > | Changed -sj (specular jitter) option to something called specular | 
| 1776 | > | sampling (-ss), which if set less than 1 has the same behavior as | 
| 1777 | > | the old -sj, but when set greater than 1, spawns multiple ray | 
| 1778 | > | samples from semi-specular surfaces. | 
| 1779 | > |  | 
| 1780 | > | Fixed bug noticed by Randolph Fritz that caused ambient sync errors. | 
| 1781 | > |  | 
| 1782 | > | Fixed bug in findglare for reading picture files under Windows. | 
| 1783 | > |  | 
| 1784 | > | Added options to pvalue to note other color spaces on reverse conversion. | 
| 1785 | > | Thanks to Erich Philips for the feature request. | 
| 1786 | > |  | 
| 1787 | > | Added BSDF data-driven material type with full sampling support. | 
| 1788 | > |  | 
| 1789 | > | Added BRDF calculations to genBSDF. | 
| 1790 | > |  | 
| 1791 | > | Bug fixes in rsensor thanks to help from David Geisler-Moroder. | 
| 1792 | > |  | 
| 1793 | > | Added variable-resolution BSDF support in renderers and genBSDF. | 
| 1794 | > |  | 
| 1795 | > | Created pkgBSDF program to extract BSDF geometry and put it | 
| 1796 | > | together with surface description suitable for inclusion in | 
| 1797 | > | a Radiance scene. | 
| 1798 | > |  | 
| 1799 | > | Muted warning for "no light sources found" when there is at least | 
| 1800 | > | one glow object and interreflections are on (-ab > 0). | 
| 1801 | > |  | 
| 1802 | > | Fixed long-standing bug that caused underestimation of reflection | 
| 1803 | > | when specular component was below -st threshold in non-metals. | 
| 1804 | > |  | 
| 1805 | > | Checked in cross-platform cmake build system created by Bill Hoffman | 
| 1806 | > | of KitWare and sponsored by NREL.  This includes a qt-based | 
| 1807 | > | driver for rvu, which is built in the new subdirectory src/qtrvu. | 
| 1808 | > |  | 
| 1809 | > | ===================== | 
| 1810 | > | Version 4.2 (Release date 7/31/2014) | 
| 1811 | > |  | 
| 1812 | > | Axel Jacobs added -cp and -palettes options to falsecolor. | 
| 1813 | > |  | 
| 1814 | > | Fixed bug in matrix output of genBSDF introduced shortly before 4.1 release. | 
| 1815 | > |  | 
| 1816 | > | Made rvu more responsive in multi-processing mode when changing parameters. | 
| 1817 | > | Explicit "new" command not needed to show changes, because it goes back | 
| 1818 | > | to "immediate mode" once something is changed.  Processing will be slow | 
| 1819 | > | but response time quick until next "new" command. | 
| 1820 | > |  | 
| 1821 | > | Fixed major bug in transmitting proxy material sampling. | 
| 1822 | > |  | 
| 1823 | > | Patched cmake build tools (changes by Zack Galbreath). | 
| 1824 | > |  | 
| 1825 | > | Removed requirement for pflip -h to be given input file (can pipe from stdin). | 
| 1826 | > |  | 
| 1827 | > | Added "Number of processes" slider to trad "Action" pane to control rad -N | 
| 1828 | > | option for rvu and batch rendering. | 
| 1829 | > |  | 
| 1830 | > | Added -c option to vwrays to repeat pixels for rtcontrib. | 
| 1831 | > |  | 
| 1832 | > | Reworked rtcontrib program and renamed to rcontrib.  New version runs much | 
| 1833 | > | faster, especially on multiprocessor systems, and doesn't require as much | 
| 1834 | > | memory.  No longer calls rtrace; instead does all the work itself. | 
| 1835 | > |  | 
| 1836 | > | Added -d option to genskyvec to produce direct-only (sun no sky) vector. | 
| 1837 | > |  | 
| 1838 | > | Added Ashikhmin-Shirley anisotropic BRDF model (ashik2) with help | 
| 1839 | > | from Nicolas Boneel. | 
| 1840 | > |  | 
| 1841 | > | Added Ruby rewrite of objview.csh by Rob Guglielmetti. | 
| 1842 | > |  | 
| 1843 | > | Fixed bug in reciprocity for tensor tree BTDF representations.  Thanks | 
| 1844 | > | to Andy McNeil for identifying the problem. | 
| 1845 | > |  | 
| 1846 | > | Added MNAME and ZNAME variables to ranimove for debugging & testing. | 
| 1847 | > |  | 
| 1848 | > | Created pmblur2 command to take motion and depth buffers from ranimove | 
| 1849 | > | to compute a better motion blur. | 
| 1850 | > |  | 
| 1851 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1852 | > | Changed BSDF routines to use updated/corrected XML specification and | 
| 1853 | > | removed depracated BSDF support from mkillum. | 
| 1854 | > |  | 
| 1855 | > | Fixed behavior of i/o flushing in rcontrib with -c > 1 (averaging).  Thanks | 
| 1856 | > | to Lars Grobe for help identifying this problem. | 
| 1857 | > |  | 
| 1858 | > | Fixed bug in depth-of-field blur where view distance was measured from | 
| 1859 | > | fore clipping plane rather than viewpoint.  Thanks to Peter A-B for | 
| 1860 | > | pointing this out. | 
| 1861 | > |  | 
| 1862 | > | Added options to dctimestep to allow multiple time steps (-n) | 
| 1863 | > | and multiple output pictures or sensor files (-o).  Also added -i | 
| 1864 | > | option to specify float (-if) or double (-id) input for sky matrix. | 
| 1865 | > |  | 
| 1866 | > | Created gendaymtx program to compute annual sky patch matrix based | 
| 1867 | > | on Ian Ashdown's implementation of Perez all-weather sky model. | 
| 1868 | > | Output can be sent directly to dctimestep in ASCII or binary stream. | 
| 1869 | > |  | 
| 1870 | > | Replaced existing gendaylit.c with improved version from Wendelin Sprenger | 
| 1871 | > | and Jan Wienold of ISE. | 
| 1872 | > |  | 
| 1873 | > | Improved accuracy of ambient calculation for large -ad settings.  Thanks | 
| 1874 | > | to Lars Grobe for noticing the problem. | 
| 1875 | > |  | 
| 1876 | > | Added -r option to gendaymtx to rotate the sky the specified number of | 
| 1877 | > | degrees about the zenith as suggested by A. McNeil. | 
| 1878 | > |  | 
| 1879 | > | Axel Jacobs added -pal eco color map that does a blue-red-yellow scale. | 
| 1880 | > |  | 
| 1881 | > | Created bsdf2klems tool to convert from various BSDF representations to | 
| 1882 | > | Klems basis matrix in XML file. | 
| 1883 | > |  | 
| 1884 | > | Fixed problem with inappropriate reciprocity enforcement on tensor | 
| 1885 | > | tree reduction in genBSDF.  (Thanks to A.McNeil for discovering issue.) | 
| 1886 | > |  | 
| 1887 | > | Fixed bug in isotropic tensor tree sampling for impinging rays | 
| 1888 | > | exactly normal to surface.  Thanks to Peter Apian-Bennewitz for | 
| 1889 | > | discovering and pointing out the error. | 
| 1890 | > |  | 
| 1891 | > | Fixed double-counting bug in mirror material with alternate type. | 
| 1892 | > | Thanks to David Geisler-Moroder for spotting the problem and helping | 
| 1893 | > | to fix it. | 
| 1894 | > |  | 
| 1895 | > | Created rcollate program to resize and transpose matrix data for Andy | 
| 1896 | > | McNeil's 5-phase annual simulation method. | 
| 1897 | > |  | 
| 1898 | > | Added epw2wea conversion program by Christoph Reinhart. | 
| 1899 | > |  | 
| 1900 | > | Implemented Perlin's improved noise function with help from Rahul Narain. | 
| 1901 | > | This will change the appearance of renderings using this function. | 
| 1902 | > |  | 
| 1903 | > | Added "origin" command to rvu as requested by John Mardaljevic | 
| 1904 | > | to place view origin at selected point in scene. | 
| 1905 | > |  | 
| 1906 | > | Switch to Perl versions of objview and objpict written by Axel Jacobs. | 
| 1907 | > |  | 
| 1908 | > | Improved rendering speed of scenes with aliases by not entering new | 
| 1909 | > | modifiers into table if they are the same as the previously defined | 
| 1910 | > | modifier for that name. | 
| 1911 | > |  | 
| 1912 | > | Made it so icalc and rcalc search RAYPATH directories for *.cal files | 
| 1913 | > | given on command line.  This simplifies script writing and makes these | 
| 1914 | > | utilities consistent with other tools in Radiance. | 
| 1915 | > |  | 
| 1916 | > | Added triangulation routine to handle convex polygons in obj2mesh. | 
| 1917 | > |  | 
| 1918 | > | ****** COMPATIBILITY CHANGE ******** | 
| 1919 | > | Made backface visibility apply to all material types, including | 
| 1920 | > | transparent and translucent materials (except dielectric and interface). | 
| 1921 | > | This makes the option useful in cases where adjacent trans surfaces | 
| 1922 | > | are placed next to each other by a modeler that only understands | 
| 1923 | > | volumetric objects. | 
| 1924 | > |  | 
| 1925 | > | Changed dctimestep so that output matrices (-n > 1) are preceded by a | 
| 1926 | > | header, and added support for float and double output formats with -o[fd]. | 
| 1927 | > |  | 
| 1928 | > | Introduced eplus_adduvf program to compute user view factors for EnergyPlus. | 
| 1929 | > |  | 
| 1930 | > | Changed image-plane sampling in rpict to use Hilbert curve, which gives | 
| 1931 | > | less of a brushed/striped appearance to output pixels with -u- (default). | 
| 1932 | > |  | 
| 1933 | > | Added ltview and ltpict Perl scripts contributed by Axel Jacobs, inspired | 
| 1934 | > | by Rob Guglielmetti. | 
| 1935 | > |  | 
| 1936 | > | Added header variables for NROWS, NCOLS and NCOMP to help standardize | 
| 1937 | > | matrix files.  This functionality has been incorporated into | 
| 1938 | > | rcollate, gendaymtx, and dctimestep. | 
| 1939 | > |  | 
| 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. | 
| 1949 | > |  | 
| 1950 | > | Added -p option to rcontrib to set function file parameters on a per-modifier | 
| 1951 | > | basis to simplify bin evaluation. | 
| 1952 | > |  | 
| 1953 | > | Created rfluxmtx program to compute flux transfer matrices from a sender | 
| 1954 | > | surface to one or more receiver surfaces.  (Renamed the file klems_int.cal | 
| 1955 | > | to klems_full.cal in the process.) | 
| 1956 | > |  | 
| 1957 | > | Added "-c" option to getinfo to execute command on data segment. | 
| 1958 | > |  | 
| 1959 | > | ===================== | 
| 1960 | > | Version 5.0 | 
| 1961 | > |  | 
| 1962 | > | Changed rmtxop so it writes out same type as lesser of inputs unless | 
| 1963 | > | directed otherwise using -f? option. | 
| 1964 | > |  | 
| 1965 | > | Changed order of oconv arguments in rfluxmtx so user can specify input | 
| 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 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 | > | Improved ambient extrapolation to avoid zero values.  Actual | 
| 2005 | > | threshold set to 5% of recorded value. | 
| 2006 | > |  | 
| 2007 | > | Changed anisotropic Gaussian and Ashikhmin models so that | 
| 2008 | > | illegal orientation vectors are dealt with more gracefully. | 
| 2009 | > |  | 
| 2010 | > | Created wrapBSDF tool and incorporated into genBSDF along | 
| 2011 | > | with new rfluxmtx computation. | 
| 2012 | > |  | 
| 2013 | > | Initial check-in of Roland Schregle's photon map integration. | 
| 2014 | > | New 5.0a version designation as suggested by Andy McNeil. | 
| 2015 | > |  | 
| 2016 | > | Added left-hand coordinate sytems to rfluxmtx to correct | 
| 2017 | > | problems with coordinate axis orientations pointed out by | 
| 2018 | > | David Geisler-Moroder. | 
| 2019 | > |  | 
| 2020 | > | Added color output to genBSDF (+C option) and support for | 
| 2021 | > | color rendering of Klems and tensor tree data. | 
| 2022 | > |  | 
| 2023 | > | Fixed another bug in rsensor that caused rays to be generated | 
| 2024 | > | on opposite side of hemisphere even where sensitivity was zero. | 
| 2025 | > |  | 
| 2026 | > | Fixed bug discovered by Jacob Jonsson in Klems BSDF | 
| 2027 | > | interpolator that caused it to over-predict normal | 
| 2028 | > | transmittance and reflectance. | 
| 2029 | > |  | 
| 2030 | > | Added ability to read input from commands in dctimestep | 
| 2031 | > | and rmtxop. | 
| 2032 | > |  | 
| 2033 | > | Added photon map support to rad.  Fixed some double-counting | 
| 2034 | > | issues in photon-mapping spotted by David Geisler-Moroder. | 
| 2035 | > |  | 
| 2036 | > | Added photon map support to trad. | 
| 2037 | > |  | 
| 2038 | > | Fixed bug in antimatter source testing when antimatter | 
| 2039 | > | definition follows potential obstructor in input. | 
| 2040 | > |  | 
| 2041 | > | Fixed issue with missing character type identifier at head | 
| 2042 | > | of genBSDF XML output. | 
| 2043 | > |  | 
| 2044 | > | Prompted by Roland S., added option to have pcompos -a order | 
| 2045 | > | rows from top rather than bottom of image. | 
| 2046 | > |  | 
| 2047 | > | Changed dctimestep to accept matrix as well as BTDF input | 
| 2048 | > | in the VTDs invocation mode.  This permits the output of | 
| 2049 | > | rmtxop to be used in a pinch when combining multiple BTDF | 
| 2050 | > | layers, although interreflection between layers is not | 
| 2051 | > | accounted for properly as it is in the WINDOW program. |