| 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 | 
| 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 | 
| 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 | 
| 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 gentregvec 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. |