Blender Git Loki

Merge branch 'master' of git@git.blender.org:blender.git into blender2.8

Fix [T51595]: Snap to edge does not work with high zoom level

That problem occurs because of the imprecision of `short int` (16 bits).
The 3d coordinates are converted to 2d, and when they are off the screen, their values can exceed 32767! (max short int value)

One quick solution is to use float instead of short

The snap code is actually a little tricky. I want to make some arithmetic simplifications in it

Eevee: Transparency: Fix crash when using transparent shadows.

Fixes T52024

Make topbar scale correctly with DPI

Finished T-intersection topology. Next up connecting the parts.

Merge remote-tracking branch 'origin/master' into soc-2016-uv_tools

Merge branch 'master' of git@git.blender.org:blender.git into blender2.8

Style (remove characters that caused "a binary file")

update for smoke domain boundaries

using phiout levelset for smoke outflow

Merge branch 'master' of git@git.blender.org:blender.git into blender2.8

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

Snap System: Separate raycast functions from nearest2d functions

The only similarity between these functions is that both serve to snap.
However their codes are totally different from one another.
So by separating these functions, it:
- removes the need to put several conditions;
- simplifies and
- optimizes the code

fix for liquid domain boundaries

cells next to domain walls are used for fractions. if outflow is enabled these should get set to outflow cells and not fluid cells (were set to fluid and liquid didnt leave domain)

UI: Change ruler panel header

Now the panel is empty in some modes because we will add primitives in the future, but we want to keep the panel as reference.

UI: Move show direction to data panel

Fix error when undo

The drawing cache must set to dirty to avoid segment fault

Avoid any possibility of using scene from different main in CTX_data_scene_layer

While these functions might be considered a temporary solution, please still be
very accurate about data ownership and where data is coming from.

Alembic: Adjusted unittest for Blender 2.8

Merge branch 'master' into blender2.8

Fix T52022 Alembic Inherits transform not taken into account

Alembic's "inherits transform" flag wasn't taken into account when
constructing the parent object relations.

Merge branch 'master' into id_copy_refactor