Blender Git Loki

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/editors/transform/transform_snap_object.c

Merge branch 'master' into blender2.8

Fix BMesh bisect not flagging dirty indices

Modifier copy function uses const now.

Remove the simple hair guide generator, can test through the API now.

Workbench: Enable Textures in Edit Mesh Mode

Constructed UV out of BMesh data layers.

Merge branch 'blender2.8' into hair_guides

Cleanup: Use switch statement to test the object type in snap functions.

EditMesh: updated extrude manipulator

Now plus icons are used to add,
arrows are used to adjust existing extrusions.

Manipulator: outline & helpline options for button

Manipulator: utility to get matrix w/o offset

Cleanup: compiler warnings, use const

Hard-coded support for arrays, color works

Collections: more work on unification with groups

* Removes the special exceptions for group reference counting. Unlinked
collections now get a faker user. The weak point here is that unlinked
collections retain their objects even if they are removed from the scene.
For some cases that's good, for tag-like collections that's not ideal.
We can investigate how that make those cases work better later.

* Depsgraph view layer evaluation was fixed to work with copy-on-write, and
the code was simplified in the process.

* Various bugfixes related to static overrides, linking and outliner.

Merge branch 'blender2.8' into temp-unified-collections

Transform: Use the new BLI_bvhtree_find_nearest_projected function to snap.

New function for BLI_kdopbvh: `BLI_bvhtree_find_nearest_projected`.

This patch does not make any difference for a user's POV. But it is a step for adding the occlusion test for snapping functions.
This new function finds the node(aabb) whose projection is closest to a screen coordinate.

Reviewers: campbellbarton

Reviewed By: campbellbarton

Tags: #bf_blender_2.8

Differential Revision: https://developer.blender.org/D3180

GSoC 2018: port Lukas Stockner's hair patch

Still missing:
- some SSE ops which he disabled (I don't know why, so I didn't add
that)
- in svm_tex_coord, he invalidated NODE_TEXCO_WINDOW initialization (I
don't know why again)
- no change of util_color.h ops
- no change of nodeitems_builtin.py (XCode didn't find it in the
project)

Ref T54796

Merge Object cache allocate and add functions

As both functions are called always together, it's better to have in one only.

RNA: Replace material api