Blender Git Loki

MIssed a flag in bli_strict_types.h

DynTopo: Attempt to fix compiling on macos

Fix one more strict flags violation

* Added clang-cl support to BLI_strict_flags.h

DynTopo: started refactoring pbvh drawing to handle customdata layers in
a more generic (and maintainable) way.

Merge branch 'master' into temp_bmesh_multires

Dyntopo:

Fix multires not setting pbvh->depth_limit

Dyntopo

* Got threaded mesh->bmesh conversion working (it's disabled
pending further testing however).

Note that SCULPT_dynamic_topology_enable_ex calls BKE_scene_graph_update_tagged,
which in tests was adding ~1 second to conversion time for larger
meshes. Do we need this call?

Dyntopo: code cleanup

* Fix bug with symmetrize creating non-manifold geometry.
* Fix bug in pbvh face create

Merge branch 'master' into temp_bmesh_multires

* Fix corner case in last commit

BMLogFace now stores the face normal.

Merge branch 'master' into sculpt-dev

Cleanup failed patch reversion

Merge branch 'master' into temp_bmesh_multires

Dyntopo now updates the existing pbvh on undo instead of building
a new one from scratch, an operation that can be slow despite being
threaded.

PBVH building is a memory bound operation (not just on the CPU side
either, remember the draw buffers have to be fully regenerated too).
Incrementally updating it this way is enormously faster (about as fast
as non-dyntopo undo).

The downside is we don't have the convienience of users regularly
building the pbvh from scratch anymore. Dyntopo does try to
join empty PBVH nodes (which happens after every stroke), but
that's not a complete substitute for a decent tree balancer.
That's on the todo list.

Tried to make pbvh bmesh normals calc a bit more efficient.

fix memory leak

fix missing null pointer check.