Blender Git Loki

Merge branch 'master' into 28

WM: fix panel drag event handling

WM: fix node link & background drag

WM: fix panel drag event handling

WM: fix node link & background drag

Fix errors after merge

Depsgraph: Remove no longer needed nodetree values copying on eval

Note: Depsgraph still calls the nodetree eval function that doesn't
nothing in turn. We can remove it, but it is harmless though.

Merge branch 'blender2.8' into greasepencil-object

source/blender/editors/gpencil/gpencil_edit.c
source/blender/editors/gpencil/gpencil_paint.c
source/blender/editors/gpencil/gpencil_utils.c
source/blender/editors/space_view3d/view3d_ruler.c

UI: clear properties color when empty

Sculpt/Paint: move PBVH building to use evaluated mesh instead of deprecated Derivedmesh.

Pretty straightforward changes, merely mimicking dm-related code,
which was already essentially using either Mesh or BMesh data to
build the PBVH...

Note that we "lose" the subsurf (a.k.a. grid) PBVH case here, but that
one was already dead code in current blender2.8, since final dm is
always a cddm built from evaluated mesh.

Proper fix is pending new code for subsurf/multires area.

Changes in Fill tool

There were some problems with the mouse position and the new TopBar.

Some changes done in order to avoid get_pixel error, but I could not reproduce the crash in Windows.

UI: remove tools space type, use properties context

We've decieded to use tools context in properties editor.

DRW: Fix animated material not refreshing

This introduces a garbage collection system similar to gpu_texture.

Fix crash with wertex and weight modes

Similar to recent sculpt mode.

Rename: GPU_material_get_uniform_buffer > GPU_material_uniform_buffer_get

Rename: GPU_texture_orphans

Workbench: XFlip Matcap per 3D View

Note: Icons are not yet updated.

Fix T55387: Render fullscreen from top menu crashes Blender

Would try to use data from global area for the newly created fullscreen area.
This should not happen, so instead of a global area use first area from layout.

Alembic: replaced BLI_assert() with comment why the assert is wrong

The comment also hints at what should be fixed, instead.

Alembic: slight clarifications