[Bf-committers] Alembic support in Blender

[Lukas Tönne]

I didn't manage to compile with scons yet, but that's mostly because of
library path issues and time constraints on my side. The buildbot also uses
scons, so if there are remaining issues we will fix them in the process of
getting the buildbot updated.

On Tue, Mar 3, 2015 at 10:54 AM, Piotr Arlukowicz <
piotao at polskikursblendera.pl> wrote:

> WOW, that's a long awaited news! Thank you Lucas!!!
>
> what about scons integration? Can I check this out?
>
> regards
> Pio
>
> ​Piotr
> ​ Arlukowicz, BFCT​
>
> ​*YT: /user/piotao?feature=guide*
>  *FB:* */polskikursblendera* *TW:*
> */piotao*
> *Blender Network:* *https://www.blendernetwork.org/piotr-arlukowicz
> <https://www.blendernetwork.org/piotr-arlukowicz>*
> *Polski Kurs Blendera:* http://polskikursblendera.pl
>
>
>
>
> 2015-03-02 19:24 GMT+01:00 Lukas Tönne <lukas.toenne at gmail.com>:
>
> > It's about to get real!
> >
> > The Gooseberry team would like to start using the new caching system with
> > Alembic ASAP. This means that we should make sure Alembic dependencies
> and
> > the library itself can be properly built and linked by Blender. First
> goal
> > is Linux (since we use it in the Blender Institute), but of course it
> > should work on all platforms. To avoid confusion i will specify exactly
> > which versions we need to use.
> >
> > The plan is to first merge the Alembic branch into our gooseberry branch
> > for testing and refinement. However, setting up Alembic build systems on
> > the official buildbot and release build systems would help avoid future
> > problems and smooth out the procedure of merging with master later on.
> >
> >
> > As a template for working around build system quirks the usual
> > install_deps.sh script is available. This builds the Alembic library on a
> > standard Ubuntu 14.10 installation. In addition, it tweaks a couple of
> > build files in the Alembic sources in order to disable certain parts that
> > have badly defined build scripts (examples, tests) - there may be more
> > proper ways of treating these build file issues.
> >
> > First a couple of links:
> >
> > Official Alembic site:
> > http://alembic.io/
> >
> > The branch on phabricator:
> > https://developer.blender.org/diffusion/B/repository/alembic_pointcache/
> > Can be checked out using:
> > git clone git://git.blender.org/blender.git -b alembic_pointcache
> >
> > The main Alembic section of the install_deps.sh script (see XXX parts
> ...):
> >
> >
> https://developer.blender.org/diffusion/B/browse/alembic_pointcache/build_files/build_environment/install_deps.sh;1a9c74a3a8fcd4dda3ec2ca09b3fd00e85cb0627$1733
> >
> > The Alembic version we use is 1.5.5 (official release), which can be
> > checked out using mercurial/hg like so:
> > hg clone -u 1_05_05 https://code.google.com/p/alembic/ <target dir>
> >
> >
> > The README.txt file in the Alembic source directory mentions the
> principle
> > build procedure and dependencies.
> > https://code.google.com/p/alembic/source/browse/README.txt?name=1_05_05
> > All of the mandatory dependencies are already part of the standard
> Blender
> > dependencies in their required versions, so no major additions other than
> > Alembic itself should be needed. For reference, here are the required
> > dependencies of Alembic with their minimum versions (as stated in their
> > README) and the current versions installed by Blender's install_deps.sh
> > script:
> >
> >             Alembic minimum     Blender             Ubuntu 14.10
> > Boost       1.44.0              1.51.0
> > IlmBase     1.0.3               2.2.0
> > HDF5        1.8.9               -----               1.8.12
> > OpenEXR     1.7.1               2.2.0
> > zlib        (unspecified)       (unspecified)       1.2.8
> >
> > HDF5 is entirely optional and can be installed to enable this container
> > format for file storage. The branch now uses the Ogawa format by default,
> > which seems to have become the new standard backend (and does not need
> > additional libraries). The default system version of HDF5 on ubuntu also
> > seems to work fine ('libhdf5-7' package).
> >
> >
> > Blender itself has 2 new build options:
> > WITH_ALEMBIC : Build with Alembic caching support. Currently this is
> needed
> > for the branch to work, otherwise there is no available implementation of
> > the cache interface and a number of functions would probably crash trying
> > to access a NULL pointer.
> > WITH_HDF5 : Optional linking with HDF5. This backend is not used atm, so
> > the build option should not be needed.
> >
> > New cmake modules FindAlembic.cmake and FindHDF5.cmake have been added to
> > simplify setting up library and include paths for Blender builds.
> >
> >
> > I would very much appreciate help in ironing out remaining issues and
> > getting libraries for OSX and Windows set up.
> > Thank you!
> > _______________________________________________
> > Bf-committers mailing list
> > Bf-committers at blender.org
> > http://lists.blender.org/mailman/listinfo/bf-committers
> >
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