Blender Git Loki

Switch back to remaping based on ID addresses.

Now that we have unique memaddresses and history of all of them for each
ID...

Still very dirty code, needs a lot of cleanup. And we should now be able
to get rid of the 'full undo' in more cases too, like ID rename e.g.

Fix T72721: Add visibility flags updates to the PBVH

Currently, there its a function that sets manually the fully_hidden flag
of the nodes from the visibility operators in paint_hide.c. The undo
code was not updating the flag, so the visibility state of the nodes was
incorrect after preforming undo operations. This sometimes was drawing
fully hidden nodes with empty buffers, causing artifacts in the
geometry.

I added a function to mark nodes which visibility state changed (similar
as we are updating the mask flags and the nodes bounding boxes). This
way, the tools, operators and undo code don't have to update the
visibility flags, making everything much simpler to understand and
maintain.

I did not remove the flag update code from the current visibility
operators in this patch, but after reimplementing them (and all the new
ones) in the new visibility system, all visibility updates should be
done using this method and the BKE_pbvh_node_fully_hidden_set function
should be removed.

Reviewed By: jbakker

Maniphest Tasks: T72721

Differential Revision: https://developer.blender.org/D6767

write node storage to file and read back

Have to find a better way to do this. An issue is that `node->typeinfo`
when the node is just read.

Cleanup: Constraints, simplified ChildOf evaluation function

This un-indents the `childof_evaluate()` function by one level, making it
easier to add new functionality in an upcoming commit.

No functional changes.

initial operator socket callback

GPencil: Cleanup loops and replace by macros

GPencil: Fix Array modifier order and remove Keep on Top

There is one limitation in the order. As the Layer position is on top of array element, if the object has several layers, the order is by layer. To keep the full object on back, merge all layers in one of the original object.

GPencil: Reorganize Array modifier code

Still pending foix the sort issue.

Volumes: tweaks for better initial setup of volume object

* Auto rotate Houdini VDB files from Y-up to Z-up
* Set default workbench display density to 1.0
* Disable bounding box display by default
* Expose wireframe display option in object properties
* Display warning if VDB grid contains only points (unsupported)

Fix bad handling of unique ID memaddress from merge of undo-experiments.

run node declaration function only once per update

Cleanup: Reduced indentation in objectsolver_evaluate()

This will make an upcoming change cleaner to implement.

No functional changes.

Constraints: fixed Object Solver 'Clear Inverse' operator

The 'Clear Inverse' operator didn't properly update the constraint, so
it didn't do anything until the entire depsgraph was updated. It's now
properly tagged for update.

Tests: Constraints, enable layer collections before testing

In the collections unit test file developers can now disable layer
collections and declutter the 3D Viewport while working in
`constraints.blend`, without influencing the actual unit tests themselves.

Cleanup: Silence compilation warnings (unused variables)

Cleanup: Remove superfluous "cuda_device_ptr" function

Merge branch 'undo-experiments' into undo-experiments-swap-reread-datablocks

Merge branch 'id-ensure-unique-memory-address' into undo-experiments

Merge branch 'master' into id-ensure-unique-memory-address

Cleanup: removed runtime error

The render passes checked all bits of an integer, that can lead to
runtime errors. Added the max bit in the DNA and used this.