Blender Git Loki

DRW: Codestyle: Remove DRWCallHeader and DRWCallGenerate

DRW: Reuse DRWCallState for the same object.

This enables caching the matrices and reducing redraw time of the same object which is particulary important for eevee.

DRW: Merge calls_generate pool with calls pool & add DRWCallState pool.

DRW: Fix warnings in Release Build.

WorkSpace: show/hode opt-out support for addons

In some cases it doesn't make sense for add-ons to be listed for hiding.
Especially for import/export which use minimal UI space.

This adds `bl_info["use_owner"]` to add-ons,
currently defaulting to True for all non Import-Export add-ons.

Cycles: don't count volume boundaries as transparent bounces.

This is more important now that we will have tigther volume bounds that
we hit multiple times. It also avoids some noise due to RR previously
affecting these surfaces, which shouldn't have been the case and should
eventually be fixed for transparent BSDFs as well.

For non-volume scenes I found no performance impact on NVIDIA or AMD.
For volume scenes the noise decrease and fixed artifacts are worth the
little extra render time, when there is any.

Merge branch 'master' into blender2.8

Cycles: change principled BSDF default distribution and SSS.

* Use a subsurface color equal to the base color, and give the subsurface
radius skin like values by default. This is how the parameter should
typically be used.
* Use GGX by default, multiscatter GGX is still quite noisy and has some
fireflies so let's keep it optional for now.

Cleanup: make static utility functions, try to find some better names.

Naming is always complicated, trying to get something a bit more
coherent, also with already existing clnor struct...

Cycles: principled absorption color now has more effect at lower values.

Fix grease pencil mode problems after merge

More merge fixes

Fix missing line after merge

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/blenkernel/intern/scene.c
source/blender/editors/object/object_select.c

Add new Brush Eraser icon

This is part of the new eraser brush.

Design by Matias Mendiola

Simplify/deduplicate code to 'select' loops from faces/verts selection.

Point cache: Pass EvaluationContext for all the related functions

Now the only missing bit seems to be in Cycles to pass depsgraph to
builtin_image_float_pixels().

Ideally we could get evaluation context instead of using depsgraph + settings.
But for the other rna EvaluationContext functions this is how we are doing.

Reviewers: sergey, brecht

Differential Revision: https://developer.blender.org/D3087

Fix error in Fill due pixscale

I missed to change this pixel factor

added vertexgroup to influence metaball radii

note, the weight (0...1) is normed to a size factor -0.5 ... 0.5 to also allow negative mball elements.

Go back to old size of UserPref/Settings window

If we split up and reorganize sections a bit, the current window size should be
totally fine. Bringing it back for now.

Reverts rB93edc452920870b.