| 2459 |
|
It ended up being simple enough to derate the final average by the factor |
| 2460 |
|
corresponding to average surface absorpition, thus removing the average |
| 2461 |
|
from the final bounce estimate. |
| 2462 |
+ |
|
| 2463 |
+ |
Introduced ies2rad upgrades by Randolph Fritz. Randolph says it |
| 2464 |
+ |
fixes the following problems: |
| 2465 |
+ |
|
| 2466 |
+ |
1. Generates correct Radiance geometry for spheres in 1995, 2002, |
| 2467 |
+ |
and 2019 IES files. |
| 2468 |
+ |
|
| 2469 |
+ |
2. Generates correct Radiance geometry for vertical cylinders that |
| 2470 |
+ |
are taller than they are wide. |
| 2471 |
+ |
|
| 2472 |
+ |
3. Ignores the file source ("File Generation Type") field in the |
| 2473 |
+ |
2019 version of the file, which would otherwise be incorrectly used |
| 2474 |
+ |
as an output multiplier. |
| 2475 |
+ |
|
| 2476 |
+ |
It also offers the following enhancements: |
| 2477 |
+ |
|
| 2478 |
+ |
1. Shape information is included in the .rad file comments. |
| 2479 |
+ |
|
| 2480 |
+ |
2. 1995, 2002, and 2019-version luminous opening geometry is |
| 2481 |
+ |
accounted for. |
| 2482 |
+ |
|
| 2483 |
+ |
3. The 2002 and 2019 IES file versions are recognized and |
| 2484 |
+ |
processed appropriately. |
| 2485 |
+ |
|
| 2486 |
+ |
4. I have made an attempt to do something intelligent with less |
| 2487 |
+ |
common "luminous opening" shapes in the 1995, 2002, and 2019 versions |
| 2488 |
+ |
of the standard, though I have not implemented any support for new |
| 2489 |
+ |
geometry; approximations are substituted and warning messages issued. |
| 2490 |
+ |
Unfortunately, this code is not tested, since I don't have any IES |
| 2491 |
+ |
files that use these shapes. |
| 2492 |
+ |
|
| 2493 |
+ |
Added support for depth-of-field blurring in vwrays using -pd option. |
| 2494 |
+ |
Also, made -c count work with vwrays -i, producing multiple samples |
| 2495 |
+ |
per indicated pixel position. At the same time, support for the -pd |
| 2496 |
+ |
option was added to rtpict, which calls on vwrays for its samples. |
| 2497 |
+ |
|
| 2498 |
+ |
Fixed issue with BSDFs that didn't obey reciprocity, where direct |
| 2499 |
+ |
sampling wasn't following exactly with indirect sampling. This was |
| 2500 |
+ |
discovered and reported by Jon Sargent. |
| 2501 |
+ |
|
| 2502 |
+ |
Created checkBSDF tool to test XML BSDF reciprocity and perform similar |
| 2503 |
+ |
sanity checks. |
| 2504 |
+ |
|
| 2505 |
+ |
Added -O option to pvalue and pextrem to report watts/sr/m^2 even if |
| 2506 |
+ |
picture is XYZE. |
| 2507 |
+ |
|
| 2508 |
+ |
Made subtle changes to header i/o routines to preserve alignment in |
| 2509 |
+ |
binary file formats to enable memory-mapping. Implemented memory-mapped |
| 2510 |
+ |
matrix loading in rmtxop for binary double files. |
| 2511 |
+ |
|
| 2512 |
+ |
Removed ambient value sorting, which was written when ambient caches |
| 2513 |
+ |
could overwhelm available memory. This is rarely the case these days, |
| 2514 |
+ |
and the added code complexity and updating of cache values with LRU |
| 2515 |
+ |
counts dirties pages that would otherwise remain clean, so it was |
| 2516 |
+ |
often a loss even when VM was an issue. |
| 2517 |
+ |
|
| 2518 |
+ |
Added iso2klems script to compute a Klems BSDF based on specular |
| 2519 |
+ |
and diffuse measurements as a function of incident angle. |
| 2520 |
+ |
|
| 2521 |
+ |
Fixed issue with over-counting diffuse component during aBSDF |
| 2522 |
+ |
peak extraction. |
| 2523 |
+ |
|
| 2524 |
+ |
Added dctimestep -x and -y options to specify image dimensions |
| 2525 |
+ |
for multiple outputs corresponding to result vectors. |
| 2526 |
+ |
|
| 2527 |
+ |
Added -P option to rcalc to pass formatted input when cond is <= 0. |
| 2528 |
+ |
|
| 2529 |
+ |
Created rcrop utility for cropping matrices and pictures more |
| 2530 |
+ |
conveniently, correcting view information. Expect it to be handy |
| 2531 |
+ |
for extracting rows and columns from matrices, mostly. |
| 2532 |
+ |
|
| 2533 |
+ |
Changed pcomb so -o option elides original exposure values |
| 2534 |
+ |
from indented source headers. |
| 2535 |
+ |
|
| 2536 |
+ |
Added getinfo -r option, which is similar to -a except it will |
| 2537 |
+ |
replace indicated lines with new ones. |
| 2538 |
+ |
|
| 2539 |
+ |
Slight change to vwrays -d option to not spit out "-ld-", and to |
| 2540 |
+ |
produce "-ld+" without requiring input picture as argument. |
| 2541 |
+ |
|
| 2542 |
+ |
Added automatic overture calculation to rtpict with -n > 1 if |
| 2543 |
+ |
ambient cache is on and file is named. If straight image output |
| 2544 |
+ |
is requested, we randomize all samples and avoid cache collisions. |
| 2545 |
+ |
|
| 2546 |
+ |
Added cnt -s option to shuffle output. |
| 2547 |
+ |
|
| 2548 |
+ |
Fixed issue with divide-by-zero errors in the ambient super-sampling |
| 2549 |
+ |
routine discovered by Jon Sargent of Solemma. This affected regions |
| 2550 |
+ |
that had zero radiance, such as black backgrounds or unlit areas |
| 2551 |
+ |
with -av 0 0 0, when super-sampling was effectively disabled, causing |
| 2552 |
+ |
some loss in accuracy of the results. |
| 2553 |
+ |
|
| 2554 |
+ |
Updated Klems Half- and Quarter-bases to match angles currently used |
| 2555 |
+ |
in WINDOW. |
