Blender Git Loki

Fix thread-lock when re-generating material preview icon

Thought the spin lock supported recursion, it doesn't.

Merge branch 'master' into geometry-nodes

Merge branch 'master' into asset-browser

Show asset preview in Asset Browser sidebar

Addresses T82977.

Turn file previews into icons to allow access from BPY

That way we can expose an icon-id that scripts can use to reference the icon.
The Python API for file entries has the icon-id exposed.

To get this to work I had to make parts of the icon system thread safe. I added
a bunch of spin locks, but as a whole it's rather weak.

Part of T82977.

Add debug timer prints to possion for fututer performance discussions

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

Add reading and writing for ui data structs

Fixes for adding and removing custom properties

Fixes for custom properties API function

Merge branch 'master' into geometry-nodes

Geometry Nodes: do not create geometry depsgraph relation for empty object

This resulted in a warning.

Geometry Nodes: support muted nodes

The handling of muted nodes is handled at the derived node tree
level now. This is also where expanding node groups is handled.
Muted nodes are relinked and removed from the derived tree
during construction. The geometry node evaluation code does
not have to know about muted nodes this way.

Theme: Update shader node color to match socket color

Related to T82689

Reviewed by Brecht

UI: Update node socket colors

Note: This also changes the Shader socket color, to match "Shading" in the Outliner.

Theme update for shader nodes will be committed separately.

Related to T82689

Geometry Nodes: Fix building in Mac

alembic : fix some crashes related to time sampling

reuse time sampling from alembic library to lookup the data arrays

alembic : fix fps not taking into account base

Merge branch 'master' into refactor-idprop-ui-data

Geometry Nodes: Support exposing string sockets to the modifier

Create a string IDProperty in the modifier initialized with the socket's
default value.