Blender Git Loki

Basic Implementation of GTAO :
There is still artifacts to remove and optimisation to do.

Tag areas of code that require TODO_LAYER_COPY

Merge remote-tracking branch 'origin/blender2.8' into render-layers

Manual fix: collection.c layer.c

Fix unittest for cases where we set render_layer but not scene_collection

Fix context operator test

We needed a fallback for the cases where the layer was specified but not a scene_collection

BKE_scene_layer_has_collection

Util function to check if a SceneCollection is linked to a SceneLayer

This is needed for corner cases of bpy.context.scene_collection when the context render_layer mismatches the context scene_collection.

Left-over from previous commit (remove OBJECT_OT_move_to_layer)

Remove OBJECT_OT_move_to_layer

Link objects in scene using ObjectBase

Update selected_editable_bases to use ObjectBase

Remove base from BKE_object_groups_clear

Remove OB_FROMGROUP from base, and add util funcs to sync base/object flags

I still want to remove the syncing of base/object flags. But for now
this will at least help future refactor.

ObjectBase need a flag for from_dupli temp objects

Edge AO improvement when geometry is over the background.

Fixup on versioning (re: selected objects)

Update selectable_bases to use ObjectBase

Update visible_bases to use ObjectBase

Fix logic for BKE_scene_layer_base_flag_recalculate

Add BASE_SELECTABLED flag

Rename: BASE_VISIBLE > BASE_VISIBLED

BASE_VISIBLE was already defined on DNA_scene_types.h