Blender Git Loki

Merge branch 'master' into soc-2021-vse-strip-thumbnails

fix type of code line being after the parenthesis
instead of before

Sculpt dyntopo: BMLog now uses the new bmesh unique id system

A few notes:

* MESH_ID layers are not saved on conversion to Mesh unless
you ask for it in BM_mesh_bm_to_me's params.
* Still need to test the box/lasso trim tools.
* Need to find some way to test loop/edge ids, which aren't
used by dyntopo.

Merge remote-tracking branch 'origin/master' into temp-lineart-contained

Merge remote-tracking branch 'origin/master' into temp-lineart-contained

Sculpt dyntopo: Added a function to add multiple customdata
layers to a bmesh at once. Helpful since bmesh customdata
layers are allocated in single blocks, thus adding
layers individually can lead to lots of memory
copying.

Sculpt dyntopo: Added (optional) support for unique mesh id tracking in
bmesh

* System is per element type. So you can have unique ids for verts and
faces, but not edges and loops.
* Supports an optional id to element lookup table.
* Uses single id space for all elements
* Added a new CD_FLAG_ELEM_NOCOPY flag to tell
customdata_bmesh_copy_data to ignore that layer.
* IDs are stored as a temporary customdata layer with
CD_FLAG_ELEM_NOCOPY set.

Merge branch 'master' into temp_bmesh_multires

Strip thumbnail drawing Fix : Thumbnails crop to exact width of strip

The end thumbnails crop to the exact left and right edges of the strip.
The previous version had poor clipping of thumbnails.

Merge branch 'master' into soc-2021-vse-strip-thumbnails

Merge branch 'master' into xr-controller-support

XR: Allow multiple modal actions at a time

This was disabled before since modal handlers for action operators
could receive events from other actions and exit prematurely. Now,
the XR operators check for events with the matching operator and
properties to avoid this. In addition, a list of active modal actions
is stored in the session state so that duplicate operators can be
filtered out when dispatching events.

XR: Use prior nav data to calculate viewer pose

Fixes an issue where draw callbacks were not drawn correctly if an
operator changed the navigation. Now, the navigation transforms are
saved before dispatching action events and are later used to
calculate the viewer/controller poses.

UV: Dynamic Grid

Adds the option to replace the default grid in the UV editor with a NxN
grid.

Refer T78389

Sculpt Dyntopo: Fix memory corruption in dyntopo undo

ss->active_XXX_index wasn't being handled properly.

USD export: new Export Cycles Shaders option.

Added new option to convert Cycles nodes to USD, disabled by default.

Dyntopo sculpt: add support for asan to mempool

USD export: fix root prim rotation.

Fixed bug applying rotation to root prim on export,
where the euler angles were incorrectly specified
as radians. Now saving the angles as degrees.

Sculpt Dyntopo: fix bug in dyntopo brush spacing.

Fix crash with disabled nodes modifier