[ViewVC] Diff of: Development/ray/doc/notes/ReleaseNotes

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.54 by greg, Thu Oct 28 00:49:27 2004 UTC vs.
Revision 1.92 by greg, Fri Aug 5 17:24:53 2005 UTC

+Sundstedt for pointing this out.)
+(The above were included in the 3.6.1 patch release.)
-+
-+
+Changed default temporary directory from /usr/tmp, which doesn't exist
-+
+on a lot of systems these days, to /tmp.
-+
-+
+Eliminated many unused files and programs from the distribution, including
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+the following programs that were being built but no longer used:
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+        oki20   - printer driver for OkiMate 20 printer (B&W)
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+        oki20c  - printer driver for OkiMate 20 color printer
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+        pcwarp  - intended as more general substitute for macbetcal,
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+                        but never quite worked
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+        ra_avs  - convert to & from AVS image format
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+        ra_bn   - convert to & from Barneyscann format
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+        ra_pr   - convert to & from 8-bit Sun rasterfile format
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+        ra_pr24 - convert to & from 24-bit Sun rasterfile format
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+        thf2rad - convert GDS "things file" to Radiance scene format
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+If anyone is still wanting any of the above programs, let us know and we'll
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+reinstate it.
-+
-+
+Fixed bug in pcond's acuity simulation for small view angles (less than
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+degrees horizontally or vertically).  Thanks to James Lee for figuring
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+this out.
-+
-+
+Added script to convert to/from ICT's Poskanzer Float Map, which I don't
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+care to support officially due to its machine-dependent byte order.
-+
-+
+Fixed bug that caused incorrect reporting of non-surface in set when
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+mixing meshes and instances.  (Thanks to Jack de Valpine for discovery.)
-+
-+
+Fixed inaccuracy in calculation of diffuse transmission in the presence
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+of pure specular (Fresnel reflection) using "trans" material.  Thanks
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+to Christoph Reinhart for pointing out the error.
-+
-+
+Made internal change to tone-mapping library to use structure pointer
-+
+rather than stack, making code re-entrant and more up to modern standards.
-+
-+
+Added -pd option to handle depth-of-field blur in rpict.  This requires
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+that the view directon (-vd option) include focal distance information,
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+which is now preserved by the various view file routines, and reported
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+by the vwright command.
-+
-+
+Added DBLUR variable to ranimate and pmdblur script to handle simultaneous
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+motion and depth-of-field blurring.  Thanks to Visarc for funding this work.
-+
-+
+Added setting of focus distance in rvu ("focus" command) and rholo
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+('f'/"frame" command).
-+
-+
+Changed default remote shell in ranimate to "ssh" rather than "rsh",
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+which has been abandoned on most Unix systems due to security issues.
-+
-+
+Fixed behavior of source primitive using illum with no alternate
-+
+material.  These now become transparent so one can see the sky or
-+
+light-probe background for use in image-based lighting.  Previously,
-+
+the user needed to specify the background glow as the alternate
-+
+material for a distant illum source to behave properly.  (This still
-+
+works.)
-+
-+
+Fixed some minor problems and inconsistencies with 16-bit/channel
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+TIFF i/o in ra_tiff.
-+
-+
+Created mksource program to generate distant sources for improved
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+image-based lighting with light probes.
-+
-+
+Changed ambient calculation so that -ad will not limit recursion
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+depth, and a minimum of 27 samples will be sent out for each stored
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+ambient value, or 3 samples if -aa is 0 (caching off).
-+
-+
+Added -oM option to rtrace to report material (rather than modifier)
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+for cases where actual material is aliased or further up modifier chain.
-+
-+
+Rearranged the way ray contributions are computed so that it might be
-+
+possible to use rtrace to derive daylight coefficients and optical
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+transfer functions.  The new -oTW option of rtrace produces color
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+contribution weights for each ray, which combined with the -ti (or -tI)
-+
+option permits the contribution of selected surfaces or sources to
-+
+be determined.  Using the -oTW option, one should also specify
-+
+options "-dt 0 -aa 0 -as 0" for optimal results.  In particular,
-+
+one cannot expect reasonable tallies with -ab >= 1 and irradiance
-+
+caching on (-aa > 0).
-+
-+
+The same code modifications included a change to the indirect computation
-+
+with caching switched off (-aa 0).  Whereas before, the number of secondary
-+
+rays after the first bounce were half of the previous generation, they are
-+
+now determined by the surface reflectance, making for a better and faster
-+
+calculation.  It should now be possible to compute many bounces with -aa 0,
-+
+which used to be prohibitively expensive.
-+
-+
+Added -T option to xshowtrace to trace rays to light sources.
-+
-+
+Added meta2bmp program to produce BMP files from metafile graphics.
-+
-+
+Added cct_x(t) and cct_y(t) to src/cal/cal/blackbody.cal to interpolate
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+CIE chromaticities for particular black-body temperatures.
-+
-+
+Increased maximum number of input pictures in pcomb and pcompos to 512.
-+
-+
+Created rtcontrib program for computing ray contribution coefficients.
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+This tool may be used to do standard optical ray tracing or daylight
-+
+coefficient calculations for annual simulations, among other uses.
-+
-+
+Added tilde ('~') output option as part of the -o* specification of
-+
+rtrace.  This permits ray trees to be parsed more easily in binary
-+
+output mode, as needed by rtcontrib.
-+
-+
+Implemented Russian roulette ray termination with -lr <= 0.
-+
+Made -lr -10 the default in rtcontrib.
-+
-+
+Made rtcontrib -f option search RAYPATH directories.
-+
-+
+Made it so -o option of rtcontrib can pipe -o output to a command.
-+
-+
+Added -if and -of options to total for binary i/o (following rcalc mold).
-+
-+
+Switched default options in rtrace to use Russian roulette.  (Rpict and rvu
-+
+still use biased ray termination.)
-+
-+
+Added rtcontrib -r option to recover partial output.
-+
-+
+Added -u rendering option for pure Monte Carlo sampling.
-+
+(Got rid of -DMC compile option, which this makes superfluous.)
-+
-+
+Changed -t option of rlam to accept strings as well as single characters.
-+
-+
+Fixed bug in rcalc with -l option where it would sometimes go into an
-+
+infinite loop.
-+
-+
+Fixed truly ancient bug in bounding box computation for cones, which
-+
+could (and did) cause missing segments.
-+
-+
+Added -z option to normtiff to output LZW-compressed files.
-+
-+
+Last change to total causes it to produce results when it sees an empty
-+
+line on the input.  This was not intentional, but I decided I like this
-+
+behavior so I documented it rather than changing it.
-+
-+
+=====================
-+
+Version 3.8
-+
-+
+Fixed Russian roulette ray termination, which was doing the opposite of
-+
+what it should have been doing, resulting in overestimated values below
-+
+minimum ray sampling weight (serious).
-+
-+
+Changed mksource to use 98th percentile (rather than 99th) for threshold.
-+
-+
+(Above changes included in 3.7.1 patch release.)

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.54 by greg, Thu Oct 28 00:49:27 2004 UTC vs. Revision 1.92 by greg, Fri Aug 5 17:24:53 2005 UTC

Diff Legend

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.54 by greg, Thu Oct 28 00:49:27 2004 UTC vs.
Revision 1.92 by greg, Fri Aug 5 17:24:53 2005 UTC