Blender Git Loki

GPencil: Fix Select material operator not refresh viewport

With the change to depsgraph evaluation, need tag the datablock to refresh screen.

GPencil: Use secondary material for stroke color

LANPR: Fixing CPU mode camera view scale.

LANPR: CPU mode shaders now follow viewport zoom/pan values.

GPencil: Use collection names as layer names in conversion from curves

LANPR: Panels in object and collection page always display when engine is selected

LANPR: GPU mode now supports all three usage flags in objects and collections.

LANPR: GPU mode follow object/collection usage flag.

Merge branch 'master' into greasepencil-object

LANPR: UI and operator guard for null camera situations.

Fix line layer init level errors. Default follow world color

LANPR: able to toggle two background colors.

LANPR: option to use the world background.

GPU preview and render mode now follows background alpha correctly.

LANPR: Modifier ui now deactivates correctly.

Merge remote-tracking branch 'origin/master' into soc-2019-npr

Merge branch 'master' into greasepencil-object

Cleanup: Use zero_v4 to init the default value.

Merge branch 'master' into greasepencil-object

Conflicts:
source/blender/draw/engines/gpencil/gpencil_engine.h

GPencil: Remove custom equals functions and reuse BLI_math compare

I have found the compare function when looking at BLI_math to add my functions, so these are duplicatd and can be removed.