Blender Git Loki

Merge branch 'master' into blender2.8

Cleanup: avoid too close namings, prone to typo mistakes!

Fix T56224: Blender2.8 will force a quit when trying to open a scene containing clip track created by blender 2.79.

Beautiful example of typo going unoticed and firing back up in totally
unexpected place years later. Guess nobody actually duplicated a Clip
data-block before! :P

Most likely own fault, during refactor of ID copying code.

Depsgraph: Remove obscure code which was only needed for old OSD implementation

Subsurf: Remove OpenSubdiv options from modifier

There are following reasons to do so:

- The plan is to replace it with some sort of object or viewport option,
so we can apply OpenSubdiv subdivisions on top of modifier stack and
keep modifier stack purely CPU side.

This will solve issues when adding some relation in scene will force
modifier to be evaluated on CPU.

- With new upcoming OpenSubdiv based CPU modifier implementation we can
cache topology similar to what GPU side was doing, which will already
be reasonably faster.

- OpenSubdiv GPU does not work since the OpenGL version bump, and is
to be rewritten with all the adaptive refine options kept in mind.

Since OpenSubdiv GPU was already broken and was only causing object
to become invisible, there is no reason to keep having that option in
the modifier.

Reviewers: brecht

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D3598

Fix T56290: Segfault when loading file - OpenSubdiv

Filled missing callbacks to converter.

Subsurf: Make uv boundaries easily extendible

This replaces old single toggle option to subdivide UVs with
an enum which can have more options. The usecase for this is
to be compatible with other software. But we also might choose
different subdivision type as default in the future.

DNA and underlying code supports all possible options, but
only the ones which are compatible with old subdivision code
are currently exposes.

Reviewers: brecht

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D3575

OpenSubdiv: Add stub implementation of C-API

C-API is way smaller than the rest of the code which uses it.
So better to conditionally compile stub implementation than
to keep adding ifdef everywhere.

OpenSubdiv: Fix typo in crease comparison

Merge branch 'master' into blender2.8

Fix T56344: Crash when used Twist for Emitter type of Particles System.

That effect is NOP with emitter particles anyway...

Cleanup: Description should not end with a fullstop

PyAPI: update scripts for matrix multiply operator

Operators:
- add torus
- align objects
- bake physics
- make dupli faces
- smart project

Templates:
- 3D view ray cast

Other:
- Methods for bones/edit-bones

Gizmo: add blank gizmo definition

Missed from 98c304e865f by accident.

build_environment: blosc 1.14.4

build_environment: zlib move harvesting to zlib.cmake

build_environment:openal 1.18.2

build_environment: zlib 1.2.11

Cleanup: Fix wrong formatting

For unknown reasons, visual studio unformat a section of the code.

Merge branch 'master' into blender2.8