--- ray/doc/notes/ReleaseNotes 2004/09/17 21:43:49 1.45 +++ ray/doc/notes/ReleaseNotes 2005/06/02 04:47:26 1.79 @@ -1256,7 +1256,7 @@ Added -I option to replmarks for mesh instancing. 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 @@ -1296,7 +1296,7 @@ Fixed a very obscure bug in rpict that caused a dark h 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. @@ -1310,3 +1310,158 @@ Modified gensky behavior so if time is given with stan 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 +4 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. + +Increased maximum number of input pictures in pcomb and pcompos to 512. + +Created rtcontrib program for computing ray contribution coefficients. +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).