Blender Git Loki

Cleanup: unused argument, variable warnings

Fix compilation

Commited this cleanup by mistake

Merge branch 'master' into tmp-overlay-engine

Overlay Engine: Camera Background Images

Overlay Engine: Image Empties

Fix T71590: Closing file browser reopens previously closed render view

The render view window was never closed actually, just moved behind the
main window. It's properly closed now.

It should also behave more like expected when there already is a
temporary window open (e.g. Preferences).

GPencil Length modifier

This patch includes a modifiers that developed for NPR rendering.

- Length modifier that stretch/shrink a stroke.

Differential Revision: https://developer.blender.org/D5795

Prepare patch

Merge branch 'master' into greasepencil-object

Conflicts:
release/scripts/startup/bl_ui/properties_data_modifier.py
source/blender/gpencil_modifiers/MOD_gpencil_modifiertypes.h
source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c
source/blender/makesdna/DNA_gpencil_modifier_types.h
source/blender/makesrna/intern/rna_gpencil_modifier.c

GPencil MultiStroke modifier

This patch includes a modifiers that developed for NPR rendering.

- MultiStroke modifier that generates multiple strokes around the original ones.

Differential Revision: https://developer.blender.org/D5795

Fix incorrect use of use_handle option

Minor cleanup: Clarify logic

Cleanup: Clarify iterator visibility flag

Fix incorrect selection flag usage

Cleanup: Comments, use enum types or aliases in parameter lists

Undo experiments: proof-of-concept of reusable depsgraph across undo steps.

This is still very sketchy, but seems to work in basic cases. useless
currently, though, as objects are always changed still currently in undo
steps...

Not Yet Working (r)

prevent recursive node groups

GPencil: Add new parameters to merge materials

Now the user can control de Hue, Saturation and Value range.

make group defaults work

add Random Float node

remove unnecessarily complex code