Blender Git Loki

Fix T49249: Alembic export with multiple hair systems crash blender

Crash was due to a name collision in Alembic objects caused by the fact
that names derive from the one of the Blender object. An object having
multiple particles system would thus give its name to various
subobjects.

Now use the name of the particles system for the Alembic object.

Fix a few OpenCL compiler warnings.

fix: not initialised variable can crash blender (related to modifiers with cage editing enabled)

Fix T49228: Separate by material, materials dissappear after reload.

Yet another mismatch where code would decrease usercount (of Material here) but never increase it again
when re-assigning the datablock...

Fix T49229: ID user decrement error when deleting group instance twice.

Another great example of inconsistency in usercount handling - dupli_group was considered
as refcounted by readfile.c code (and hence by library_query.c one, which is based on it),
but not by editor/BKE_object code, which never increased group's usercount when creating
an instance of it etc.

To be backported to 2.78.

Merge branch 'soc-2016-pbvh-painting' of git.blender.org:blender into soc-2016-pbvh-painting

Refactoring

FileBrowser: Always do full cache refresh while we are still listing...

Does not seem to be a problem with embeded filelisting code, but was breaking with some experimental asset engines.

Claude: Fix erroneous uuid generation.

This uuid generation is just temp placeholder anyway, we want something based on actual uuid of Cloud items,
but at least let's avoid generating several time the same ID in current listing!

Merge branch 'master' into asset-engine

Cleanup: Line length, indentation, etc

Cleanup: Reduce diff from master (mostly emty lines...).

Merge branch 'master' into soc-2016-pbvh-painting

Cycles: Implement threaded SVM nodes compilation

The title says it all actually. From tests with barber shop scene here
gives 2-3x speedup for shader compilation on my oldie i7 machine. The
gain is mainly due to textures metadata query from jpeg files (which
seems to requite de-compression before metadata can be read). But in
theory could give nice improvements for scenes with huge node trees
as well (i'm talking about node trees of complexity of fractal which
we had reports about in the past).

Reviewers: juicyfruit, dingto, lukasstockner97, brecht

Reviewed By: brecht

Subscribers: monio, Blendify

Differential Revision: https://developer.blender.org/D2215

Fix bpy.data.user_map() ignoring unused datablocks.

Should be backported to 2.78.
Found by Sybren here in studio, thanks!

Outliner: Report linked datablock edit failure when trying to rename linked data in outliner

Fix T49323: Ineffective bone roll calculation with low rig scale

The code was expecting vector to be normalized, however after
applying inverted object matrix it was possible to have scale
applied to it.

Fix T49336: Outliner allows to edit restrict flags for linked objects

Cycles: Tweak empty boundbox children

The idea here is to make assert failure to fail sooner on an incorrect
node address rather than later with stack overflow.

Fix T49290: Specific .blend with hair crashes in MacOS 2.78 RC1 on render

The issue was caused by some false-positive empty non-AABB intersection.
Tried to tweak it a bit so it does not record intersection anymore.

Hopefully will work for all platforms. Tested here on iMac and Debian.