Blender Git Loki

Added missing line breaks at end of files.

Merge branch 'master' into soc-2021-porting-modifiers-to-nodes-merge-by-distance

Changes based on review bv Hans Goudey (HooglyBoogly)

Docs: tooltip update missing from 3e775a4fc57cfd48954adcf284354312f34d5412

PyAPI: remove the .py extension requirement for startup registration

This was left over from when these scripts were loaded as modules,
where their names needed to be compatible with Pythons module naming.

Version patch existing files so text with register enabled
without a `.py` extension wont start executing on startup.

Resolves T89532.

Mesh: replace saacos with acosf for normal calculation

The clamped version of acos isn't needed as degenerate (nan) coordinates
result in zeroed vectors which don't need clamping.

Merge branch 'master' into geometry-nodes-level-set-nodes

Docs: note that normalize_v# functions zero out input containing nan

Cleanup: remove unused BKE_mesh_calc_normals_mapping functions

This supported calculating normals for MPoly array which was copied to
an MFace aligned array.

Remove the functions entirely since MFace use is being phased out and
these function isn't used anywhere.

Cleanup: remove use of BKE_mesh_calc_normals_mapping_simple

Use BKE_mesh_calc_normals instead of
BKE_mesh_calc_normals_mapping_simple for curve modifier calculation.

This only made sense for derived-mesh which is no longer used.

Cleanup: code-comments

Use capitalization, remove unnecessary ellipsis.

Cleanup: split BKE_mesh_calc_normals_poly function in two

Remove the 'only_face_normals' argument.

- BKE_mesh_calc_normals_poly for polygon normals.
- BKE_mesh_calc_normals_poly_and_vertex for poly and vertex normals.

Order arguments logically:

- Pair array and length arguments.
- Position normal array arguments (to be filled) last.

Mesh: optimize normal calculation

Optimize mesh normal calculation.

- Remove the intermediate `lnors_weighted` array, accumulate directly
into the normal array using a spin-lock for thread safety.
- Remove single threaded iteration over loops
(normal calculation is now fully multi-threaded).
- Remove stack array (alloca) for pre-calculating edge-directions.

Summary of Performance Characteristics:

- The largest gains are for single high poly meshes, with isolated
normal-calculation benchmarks of meshes over ~1.5 million showing
2x+ speedup, ~25 million polygons are ~2.85x faster.

- Single lower poly meshes (250k polys) can be ~2x slower.

Since these meshes aren't normally a bottleneck,
and this problem isn't noticeable on large scenes,
we considered the performance trade-off reasonable.

- The performance difference reduces with larger scenes,
tests with production files from "Sprite Fight" showing
the same or slightly better overall performance.

NOTE: tested on a AMD Ryzen TR 3970X 32-Core.

For more details & benchmarking scripts, see the patch description.

Reviewed By: mont29

Ref D11993

Compositor: Full frame Vector blur node

Compositor: Full frame Inpaint node

Merge branch 'master' into xr-controller-support

XR: Fix crash/assert on loading controller model

When calculating controller model component transforms from glTF node
data, it was previously wrongly assumed that the glTF nodes would
always contain transform matrix values. However, nodes can instead
store their transforms as separate translation/rotation/scale values,
in which case the transform matrix needs to be explicitly calculated.
This was the case for the Reverb G2 controller models using the
Windows Mixed Reality runtime.

Special thanks to Werner Trunk for help with testing/debugging.

XR: Improve "Invalid stage ref space" warning

Originally mentioned that absolute tracking was disabled, which is
wrong because absolute tracking (skipping application of eye offsets)
is always available, although it may not give the expected result of
persistent tracking origins across sessions if the stage space is
unavailable (hence the need for a warning).

Now, the warning makes no mention of absolute tracking, instead
informing the user that the local space fallback will be used and
that they should define tracking bounds via the XR runtime if they
wish to use the stage space.

Cleanup: clang-format

Cleanup: fix compiler warnings