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

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.43 by greg, Fri Sep 10 16:05:07 2004 UTC vs.
Revision 1.74 by greg, Tue May 24 22:54:38 2005 UTC

+Made similar change for virtual sources to allow modifiers and aliases
+on the mirror and prism types to work properly.
-<
+Rob Guglielmetti dded -lw and -lh options to falsecolor to control the
->
+Rob Guglielmetti added -lw and -lh options to falsecolor to control the
+legend dimensions.  Made it so -lw 0 and/or -lh 0 turns legend off.
+Made it so pcompos will read everything from a stream even if it doesn't
+line in certain cylindrical projections due to improper drawing
+of the sky dome source in rt/srcdraw.c.
-<
+Fixed problems with effective ray lenths computed for dielectric
->
+Fixed problems with effective ray lengths computed for dielectric
+and BRTDfunc materials.  This was most evident in breakup of holodeck
+views when VDISTANCE=True.
+Fixed bug introduced in shadow caching routines where sources in the
+middle of spheres were not illuminating properly.  Thanks to Guilio
+Antonutto for spotting this problem.
-+
-+
+Modified gensky behavior so if time is given with standard time zone
-+
+designation, any -m option is ignored.
-+
-+
+Added -n option to mkillum for (shared memory) parallel processing.
-+
-+
+Fixed a long-standing bug in parallel processing code that only
-+
+seemed to manifest with the new mkillum -n option, where rtrace
-+
+would deadlock upon termination.  The reason it never showed up
-+
+before is because I always closed processes in the reverse order
-+
+of opening them in other programs.  I went through and found similar
-+
+(potential) bugs in the rview device subprocess code and util/netproc.c.
-+
-+
+Corrected the normalization of the Gaussian reflectance model.  This will
-+
+cause an increase in specularity for low-lying light sources.
-+
+Thanks to Don Walters of Boeing and Arne Duer of the Univ. of Innsbruck
-+
+for pointing out this error.  The square root used for the two cosines
-+
+in the denominator of the normalization factor should not be present.
-+
+This was a serious mistake I made in the original model, which went
-+
+undiscovered (at least to my knowledge) for over a decade.  I think
-+
+Bruce Walter of Cornell may have known about it, but I never heard
-+
+the details of his discovery.
-+
-+
+Enabled the -p option for primary conversion without tone-mapping
-+
+in ra_bmp.  Also provides for XYZE input conversion to RGB.
-+
-+
+Fixed what I consider a bug in pvalue -o when taking XYZE files on input,
-+
+where it was inappropriately undoing the exposure value so that it always
-+
+reported radiance rather than XYZ values with Y in cd/m^2.
-+
-+
+Made it so ra_bmp only produces run-length encoded 8-bit output for
-+
+grayscale images that are tone-mapped.  This minimizes circumstances
-+
+under which output scanline order is reversed.
-+
-+
+Fixed bug in rcalc where it sometimes wasn't parsing the input format
-+
+correctly.
-+
-+
+=====================
-+
+Version 3.7
-+
-+
+Fixed bug in source occluder cache which caused consistency error
-+
+for distant sources and mist materials.  (Thanks to Mark Stock for
-+
+finding the problem.)
-+
-+
+Fixed serious bug in source drawing routines for rpict, where the edges
-+
+of light sources were appearing through obstructions.  (Thanks to Veronica
-+
+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
-+
+the following programs that were being built but no longer used:
-+
+        oki20   - printer driver for OkiMate 20 printer (B&W)
-+
+        oki20c  - printer driver for OkiMate 20 color printer
-+
+        pcwarp  - intended as more general substitute for macbetcal,
-+
+                        but never quite worked
-+
+        ra_avs  - convert to & from AVS image format
-+
+        ra_bn   - convert to & from Barneyscann format
-+
+        ra_pr   - convert to & from 8-bit Sun rasterfile format
-+
+        ra_pr24 - convert to & from 24-bit Sun rasterfile format
-+
+        thf2rad - convert GDS "things file" to Radiance scene format
-+
+If anyone is still wanting any of the above programs, let us know and we'll
-+
+reinstate it.
-+
-+
+Fixed bug in pcond's acuity simulation for small view angles (less than
-+
+degrees horizontally or vertically).  Thanks to James Lee for figuring
-+
+this out.
-+
-+
+Added script to convert to/from ICT's Poskanzer Float Map, which I don't
-+
+care to support officially due to its machine-dependent byte order.
-+
-+
+Fixed bug that caused incorrect reporting of non-surface in set when
-+
+mixing meshes and instances.  (Thanks to Jack de Valpine for discovery.)
-+
-+
+Fixed innacuracy in calculation of diffuse transmission in the presence
-+
+of pure specular (Fresnel reflection) using "trans" material.  Thanks
-+
+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
-+
+that the view directon (-vd option) include focal distance information,
-+
+which is now preserved by the various view file routines, and reported
-+
+by the vwright command.
-+
-+
+Added DBLUR variable to ranimate and pmdblur script to handle simultaneous
-+
+motion and depth-of-field blurring.  Thanks to Visarc for funding this work.
-+
-+
+Added setting of focus distance in rvu ("focus" command) and rholo
-+
+('f'/"frame" command).
-+
-+
+Changed default remote shell in ranimate to "ssh" rather than "rsh",
-+
+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
-+
+TIFF i/o in ra_tiff.
-+
-+
+Created mksource program to generate distant sources for improved
-+
+image-based lighting with light probes.
-+
-+
+Changed ambient calculation so that -ad will not limit recursion
-+
+depth, and a minimum of 27 samples will be sent out for each stored
-+
+ambient value, or 3 samples if -aa is 0 (caching off).
-+
-+
+Added -oM option to rtrace to report material (rather than modifier)
-+
+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
-+
+transfer functions.  The new -oTW option of rtrace produces color
-+
+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
-+
+CIE chromaticities for particular black-body temperatures.

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Comparing ray/doc/notes/ReleaseNotes (file contents): Revision 1.43 by greg, Fri Sep 10 16:05:07 2004 UTC vs. Revision 1.74 by greg, Tue May 24 22:54:38 2005 UTC

Diff Legend

Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.43 by greg, Fri Sep 10 16:05:07 2004 UTC vs.
Revision 1.74 by greg, Tue May 24 22:54:38 2005 UTC