Blender Git Loki

Fix T71759: Sculpt/Vertex/Weight Paint Brush Size Gets Undone After Undoing a Stroke.

Add code preserving scene's toolsettings accross undo.

IDPointers are dealt with special care, we try to keep existing ones for
some (like brushes) when possible.

Note that this covers ToolSettings, Brushes and Palettes currently.

I'm not especially happy about how this new code mixes with existing
'foreach_id' one, in particular in scene. But cannot think of a better,
more generic way to do it currently.

Maniphest Tasks: T71759

Differential Revision: https://developer.blender.org/D9311

Add a callback to `IDTypeInfo` to allow preservation of some data accross memfile undos

This is essentially adding that new callback, and using it only for already
existing Scene's 3DCursor.

Note that the place where this is called has been moved again, after all
have been lib-linked, such that those callbacks may also work on ID pointers.

Maniphest Tasks: T71759

Differential Revision: https://developer.blender.org/D9237

Merge branch 'blender-v2.91-release'

Merge branch 'blender-v2.91-release'

Fix T81988: Surface Deform "Bind" causes vertices to spike

Surface deform weight calculation assigned weights in a non-uniform
way that caused vertices to deform upon binding.

This was caused by the face-corner angle being used in
calculations which where squared & scaled.
Causing a triangle fan of many thin faces to have a much greater
influence compared to the same shape made from a single triangle.

Change the calculation of the weight so each face-corner is scaled
by it's angle.

Merge branch 'master' into xr-actions-D9124

XR: Implement XR constraints toggle operator

Useful for quickly playing back recorded animations without
overwriting existing data.

Exporter: Complete TODO about exiting edit mode gracefully.

DrawManager: Cleanup unneeded memory allocation

`tris_per_mat` is only valid for the final buffer cache. It was
allocated for every buffer cache.

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

Enabled dyntopo for sharp brush. Also fixed paint brush strength being
too strong with dyntopo enabled.

XR: Support auto keying XR constraint objects

If specified, headset / controller objects will auto key on animation
playback. This can be useful for virtual camera applications.

Merge remote-tracking branch 'origin/master' into lanpr-under-gp

Merge branch 'blender-v2.91-release'

Fix T77161: Outliner - Hiding a Collection does not gray out children objects

Ensure that When checking "Hide in Viewport" option for a collection
that child objects are drawn grayed out for consistency with the
"Disable in Viewports" toggle.

For checking an object visibility in the viewport the flag
BASE_VISIBLE_VIEWLAYER should be used instead of BASE_VISIBLE_DEPSGRAPH
because the latter ignores viewport visibility.

Manifest Task: T77161

Differential Revision: https://developer.blender.org/D7904

Merge branch 'cycles_socket_api' into cycles_procedural_api

Merge branch 'master' into cycles_socket_api

fix missing modified tagging on hair sockets

fix data accumulation in hair reading from alembic cache

Outliner: Add "Selectable" object filter

This addition to the filters allows the user to enable the
outliner tree to restrict the listing to only Selectable objects.

Differential Revision: https://developer.blender.org/D7310