Blender > Blender Internal и Cycles

Volumetric patch rebased

(1/1)

sungreen:

--- Цитата: storm ---TL;DR: Another boring update, nothing to see here.

I have no significant news related to volumetric or bidir, but see many
changes in trunk, so that is quick rebase.

I rethink Density input parameter, now it directly modify extinction
coefficient, sigma = density * density_geometry_factor. No more fancy
-log(1-density) trickery. Need to fix description and defaults, maybe
later.

Trying to respect multiple scattering transition color, so Homogeneous
mode is broken, only g=0 and constant color make sense, but when it work
it produce images that i think right. Need more tests.

Bi-dir part not changed. Transparent and other BSDF with delta function
have wrong weight. But in some cases it work better then previous in
"spot light rays in fog street" scenes, due fix in homogeneous volume
weight calculation.

I am too lazy to support Bi-dir and vcolume integrator for new
non-progressive case, I think better fix bugs and finish at least one
mode then spread.
--- Конец цитаты ---

... вот сам патч: ...
blender_cycles_volume_mlt_47944.patch.bz2

... получаем из svn blender нужной ревизии (47944) ...

svn checkout --revision 47944 https://snv.blender.org/svnroot/bf-blender/trunk/blender blender

... распаковываем патч и накладываем его ...
patch -p0 < blender_cycles_volume_mlt_47944.patch

... далее производим сборку Blender с учетом наложенного патча ...

sungreen:
... на днях Сергей (aka storm_st) прислал в группу рассылки bf-cycles@blender.org несколько патчей для MCMC (MLT) sampler ...
... вы так же можете попробовать поэкспериментировать с Volume BSDF ...

патч для основной ветки blender ревизии 49443

некоторые обсуждения на эту тему на форуме blenderartists



[вложение удалено Администратором]

sungreen:

патч для ревизии 57494
https://mail.yandex.ru/message_part/blender_cycles_volume_mlt_spectral_57494.patch.bz2?hid=1.2&ids=2360000002209172405&name=blender_cycles_volume_mlt_spectral_57494.patch.bz2

--- Цитата: storm_st ---No big changes, just rebased to latest trunk. Have few segfaults when
trying to render very old test scenes, i suspect it related to changes
to nodes system, maybe unrelated. As AMD OpenCL compiler misery
continues, dont expect big changes in near future in patch as well.

Warning, do NOT save your important files with patched Blender,
especially if any "Volume BSDF" material node present. If you absolutely
need that, try to remove before save and add it later every time scene
opened by hands.
--- Конец цитаты ---

sungreen:
... новый патч ...
https://webattach.mail.yandex.net/message_part_real/blender_cycles_volume_mlt_spectral_60072.patch.bz2?sid=Z8koapQ%2AK4VIxqmNuTsR1aRAJhfRMt%2F8ha5HrVeRLJNjoMMZK6Rme0BO6fter6UZw6VhM5St1SA%3D&hid=1.2&ids=2360000002827575026&name=blender_cycles_volume_mlt_spectral_60072.patch.bz2

... для windows есть готовая сборка на graphicall ...
http://www.graphicall.org/1049

sungreen:
"Если долго мучиться, что нибудь получится." вот такой русской поговоркой закончил Сегрей (aka storm, разработчик Volumetric patch) свое сообщение в bf-cycles@blender.org.

Вот полный текст этого сообщения:

--- Цитата: storm ---Finally.

Brecht, and maybe some other interested (DingTo?), now you can try to
compile and run it (but dont look at code, it still messy). Mutation 16,
Dispersion 0.01 combo is resemble Mitsuba mutation distribution, i found
it work best.

Ugh, that was a long run. But it soo cool to see how tweaked Cycles can
clean noise almost similar as in Maxwell render. Thanks all involved.

Если долго мучиться, что нибудь получится.
--- Конец цитаты ---

Патчим, компилим, пробуем ...

http://wiki.blender.org/index.php/Dev:Doc/Tools/Subversion


--- Код ---
svn checkout [url]https://svn.blender.org/svnroot/bf-blender/trunk/blender[/url]
--- Конец кода ---

... патч от 21.11.2013 для Blender ревизии 61239
https://mail.yandex.ru/message_part/blender_cycles_volume_mlt_spectral_61239.patch.bz2?name=blender_cycles_volume_mlt_spectral_61239.patch.bz2&hid=1.2&ids=2360000003333003110


--- Код ---
bzip2 -d blender_cycles_volume_mlt_spectral_61239.patch.bz2
--- Конец кода ---


--- Код ---
path -1 < blender_cycles_volume_mlt_spectral_61239.patch
--- Конец кода ---


--- Код ---
mkdir ../build
cd ../build
cmake ../blender
make -j
make install
--- Конец кода ---

... обсуждение там ...
http://blenderartists.org/forum/showthread.php?286358-Volumteric-bidirectional-spectral-patch-need-your-help

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