[Bf-committers] Alembic support in Blender

[Thomas Volkmann]

I guess I have to wait for the buildbot. I didn't manage to compile Alembic on
my system (Fedora20).
Is there an estimated time when you want to set it up?
 
thx,
Thomas
 

> Lukas Tönne <lukas.toenne at gmail.com> hat am 3. März 2015 um 13:49 geschrieben:
>
>
> Martijn Berger (Juicyfruit) has done a great job making an Alembic fork on
> github, to get rid of all the annoying cmake errors in Alembic sources.
>
> https://github.com/martijnberger/alembic
>
> A pull request has been made to try and get these changes into Alembic. For
> the time being i would suggest using Martijn's version, which apart from
> build file fixes is the same as official Alembic.
>
> On Tue, Mar 3, 2015 at 11:48 AM, Lukas Tönne <lukas.toenne at gmail.com> wrote:
>
> > 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!
> >> > _______________________________________________
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> >> >
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> >
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