[Bf-committers] Google Draco compression and Blender

[Brecht Van Lommel]

You can submit the code for review here:
https://developer.blender.org/differential/diff/create/

On Mon, Mar 11, 2019 at 7:06 PM Benjamin Schmithüsen <schmithuesen at ux3d.io>
wrote:

> Hi Brecht,
>
> thanks for the quick reply! I will update our setup following your
> instructions. When that's done, how would we get it into Blender?
>
> Regards
> Benjamin
>
> On 3/11/19 5:18 PM, Brecht Van Lommel wrote:
> > Hi Benjamin,
> >
> > It would be better to copy the source code to extern/ as we do for some
> > other libraries, rather than referring to a git submodule we do host or
> > control ourselves. The Google Draco repository is also quite big due to
> > including compiled binaries, the part we actually need is much smaller.
> >
> > If possible it would also be best to make a simple custom CMakeLists.txt
> to
> > compile Draco, so it can use all the same compiler configuration and
> flags
> > as used by the rest of Blender.
> >
> > For installation I think /2.80/python/lib/python3.7/site-packages may be
> > best, where additional libraries like numpy are installed.
> >
> > Regards,
> > Brecht.
> >
> >
> > On Mon, Mar 11, 2019 at 4:52 PM Benjamin Schmithüsen <
> schmithuesen at ux3d.io>
> > wrote:
> >
> >> Hi,
> >>
> >> thanks for the pointers! With them, I believe I found a solution: The
> >> only change in the Blender repository would be adding a git submodule to
> >> the extern folder and updating the CMakeLists.txt to add that as a
> >> subdirectory like you described. That submodule in turn contains the
> >> original Google draco repository as a submodule to be able to compile
> >> our blender-draco-compressor library that is then stored in
> >> /2.80/python/lib/python3.7/ with the Blender binary. I chose that
> >> location because it is a library that we directly call from our Python
> >> code in the io_scene_gltf2 addon (not through bpy).
> >>
> >> Does this sound reasonable so far?
> >>
> >> Best regards
> >> Benjamin
> >>
> >> On 2/27/19 6:53 PM, Brecht Van Lommel wrote:
> >>> Hi,
> >>>
> >>> There isn't really any documentation on this, best would be to copy
> what
> >> is
> >>> done for a library like extern/ceres or Python module like numpy that
> we
> >>> bundle. So far we have not bundled extra Python modules with Blender in
> >>> exactly this way though, so there is no identical example.
> >>>
> >>> I think you would start by coping that google-draco-exporter folder to
> >>> extern/draco. Then add a WITH_DRACO option and if that's enabled add
> that
> >>> subdirectory in extern/CMakeListsts.txt.
> >>>
> >>> Installing the Python module to the right directory would be done in
> >>> source/creator/CMakeLists.txt.
> >>>
> >>> Regards,
> >>> Brecht.
> >>>
> >>> On Tue, Feb 26, 2019 at 5:47 PM Benjamin Schmithüsen <
> >> schmithuesen at ux3d.io>
> >>> wrote:
> >>>
> >>>> Hi Brecht,
> >>>>
> >>>> is there any documentation available on how to correctly setup a new
> >>>> project in the extern/ folder so it can be included by Blender and
> >>>> exposed through bpy?
> >>>>
> >>>> Best regards
> >>>> Benjamin
> >>>>
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> >> --
> >>
> >> *UX3D GmbH*
> >> GPU Software Solutions
> >>
> >> Benjamin Schmithüsen
> >> GPU Software Engineer
> >> Neumarkter Str. 21
> >> 81673 Munich, Germany
> >>
> >> T: +49 (0)89 215 44 258 4
> >> F: +49 (0)89 215 44 258 8
> >> schmithuesen at ux3d.io <mailto:schmithuesen at ux3d.io>
> >> www.ux3d.io
> >>
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>
> *UX3D GmbH*
> GPU Software Solutions
>
> Benjamin Schmithüsen
> GPU Software Engineer
> Neumarkter Str. 21
> 81673 Munich, Germany
>
> T: +49 (0)89 215 44 258 4
> F: +49 (0)89 215 44 258 8
> schmithuesen at ux3d.io <mailto:schmithuesen at ux3d.io>
> www.ux3d.io
>
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