Blender Git Loki

Revert "BLI: refactor how buffers for small object optimization are stored"

This reverts commit 5d79f9f276b4b3e6289308c534c58e7ee3bb5e2d.

This was introducing build errors in windows. Need a bit more time to check it.

Merge branch 'master' into asset-metadata

Outliner: Modifier drop link and cleanup

Allow drag and drop from modifier base to another object to link
modifiers. Also clean up the code.

There are still issues with the modifier reorder.

Fixed CUDA support for the light tree.

Users can now use the light tree, with splitting, using CUDA.

The problem was that a few of the light tree functions used recursion
which meant the CUDA compiler couldn't predict how much stack space
to use.

Collection Colors: Fill behind

It is easy to switch with the #if blocks now.

Merge branch 'master' into soc-2020-outliner

Collection Colors: Color collection icons

Color the collection icons rather than drawing behind.

Collection Colors: Disable background drawing

Try icon coloring again.

Fix T78603: GPencil Noise modifier Vertex Group influence filter missing

This was removed by error during the last refactor of modiifers.

BLI: fix mistake in move constructor of Stack

Fix T78588: Material preview not visible in selection list

Logic to determine if the library icon should be used was too general.

LineArt: Fix compiler warnings

Fix crash when changing file after "Create Asset"

Support object preview thumbnails, generated on asset creation

To generate the preview, a temporary main data-base is created (think of this
as a virtual .blend within the current .blend) with a new scene and the object
to generate the preview for. It's rendered with a camera from the front, using
the "Camera Fit Frame to Selected" logic.
This should be a simple solution requiring no further setup that should work in
most cases. If needed we can have a way to set up the preview differently.

To see it in action:
* In the Outliner context menu for an object run ID Data > Create Asset
* Save the file
* Open a different file (so you can browse into the former)
* Use link/append to navigate into the saved file with the assets. You should
see the preview in thumbnail mode.

Show info report on successful asset creation

Also set fake-user for new asset data-block so it's not purged when closing the
file.

Rename "Make Asset" to "Create Asset"

The term "make" in this context refers to modifying an item to obtain a certain
property. Creating an asset however means saving a copy of a data-block as
asset. So "create" is better suited here.

Cleanup: Continue last commit

LANPR: Master thickness and strength added.

LANPR: Add related object relationship with modifier when using collection source.

LANPR: Remove obsolete UI in render panel.