Blender Git Loki

Changed calulation of theta_u in tree importance.

This reduces artifacts when using the light tree without splitting.

Before the theta_u was calclulated using a bounding sphere to
approximate a bounding box. This sometimes resulted in the cone
containng the bounding box much, much too big. Now theta_u is found
more carefully so that it is the smallest angle such that the cone
completely contains the bounding box.

Merge branch 'master' into soc-2020-outliner

Property Search: Don't remove layouts with search turned off

This mostly fixes panel headers, although they still end up with the same
problems as other layouts, with a minimum column size enforced for some
reason and misplaced labels.

PyDoc: Update Python Package Requirements

UI: Use term 'Blend Mode'

Fluid: Modified flag grid display to show flag combinations with unique colors.

Fix T78170: Mantaflow Crash | Whitewater Particles Baking

Fixed issue in the upstream Mantaflow repository.

Fix crash compiling Cycles OpenCL, after recent TBB changes

Cleanup: Fix strict compiler warning about variable shadowing

Thanks Howard for double-checking!

Fix sample color operator not updating the color in the UI

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8110

Fix Color Filter not updating during modal operator

The code for tagging the updates was wrong

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8109

Fix Edit Voxel Size label rotation and scale in rotated objects

Previously, the text rotation was always calculated in object space, so
the text rotation always had the object rotation applied. Now the
rotation is calculated in world space, so it always aligns correctly to
the view. Same applies to text scale not taking into account the object
position.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8068

Fix T78259: Proportional editing does not work in particle editing

This is a long-standing bug, possibly proportional editing never worked
in particle mode.

Some parameter definitions in the transform code are scattered and
sometimes duplicated.

Proportional editing is a parameter that depends only on the Convert
type and not `spacetype`, `CTX_` or `obedit_type`.

Fix T78129: No audio playback with sound strip pasted to a new scene

Add DEG_relations_tag_update(bmain).

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8130

Refactor: use new api for expand in blenloader

This is part of T76372.

Fix T77410: Effects doesn't update when Offset property is set

Enabling offset property caused strip to produce `SEQ_CACHE_STORE_RAW`
type image, which is kept in temp cache and is not invalidated.

Change update functions for all properties of effect strips that affect image
to `rna_Sequence_invalidate_raw_update`.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D8132

Fix T78295: reload scripts disables Cycles render passes in the compositor

Don't auto update render passes in nodes when unregistering render passes or
quitting Blender, this should only happen on explicit user action to change the
engine or passes.

Merge branch 'master' into property-search-ui

Refactor: use new api for lib linking id properties

Fix T78049: Wrong icon for add cone tool