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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.77 by greg, Tue May 31 18:01:08 2005 UTC vs.
Revision 1.94 by greg, Mon Aug 22 16:07:26 2005 UTC

# Line 1382 | Line 1382 | care to support officially due to its machine-dependen
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  
# Line 1457 | Line 1457 | Added tilde ('~') output option as part of the -o* spe
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
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 > (Above changes included in 3.7.2 patch release 22 Aug 2005.)

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