Blender Git Loki

Mesh: remove unused function, wrong assert, {} etc.

Material: add emission strength's effect on Ke (color)

Ref {rBAec4ad081e564}

Material: add comments, use explicit float3 initialisation.

Material: style guide, Class rearrangement.

Writer: add object group writer member function

Nurbs: remove depsgraph from class, minor cleanup.

Replace uint and short with int and int16_t

Cleanup: exporter main: use const, style guide.

Cleanup: use const, edit comments, reorder includes.

No functional change.

Change axes transform defaults to match old behavior.

Write empty usemtl if a polygon has no material.

Merge branch 'master' into soc-2020-io-performance

Merge branch 'master' into greasepencil-object

Merge branch 'master' into greasepencil-edit-curve

small cleanup

remove some Volume properties accidentally reintroduced in Mesh

fix for changes in master

Merge branch 'master' into cycles_procedural_api

Fix T80771: Avoid changing the visibility of loose geometry when entering Sculpt Mode

When entering scultp mode the visibility from the Face Sets is copied to
the base mesh. This steps was considering that if a vertex belongs to a
face with a visibible Face Set ID, it should be visible. As loose
geometry may not have any faces, those vertex were set to hidden.

Now this function check if a vertex visibility should be modified by the
face sets (by checking the loops), avoiding modifying the visibility of
loose geometry unintentionally.

Reviewed By: sergey

Maniphest Tasks: T80771

Differential Revision: https://developer.blender.org/D8899

Fix T80520: Tris to Quads ignores UV delimit option