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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.99 by greg, Sat Sep 17 05:14:14 2005 UTC vs.
Revision 1.173 by greg, Fri Sep 3 23:53:49 2010 UTC

# Line 1140 | Line 1140 | of recursive routines using sets to avoid overrunning
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)
# Line 1343 | Line 1343 | Fixed bug in rcalc where it sometimes wasn't parsing t
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
# Line 1489 | Line 1489 | line on the input.  This was not intentional, but I de
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
# Line 1519 | Line 1519 | during parallel rendering -- this was a serious oversi
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
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.

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