Blender Git Loki

Fix tool leader-key consuming mouse wheel events

Cleanup: adjust layout for example experimental UI

- Use a separate split for each feature,
since two top-level splits can become un-aligned.
- Only show the task instead of the entire URL.

User Preference Experimental Tab

Experimental tab in User Preferences for experimental features.
The tab option is only visible when "Developer Extras" is on.

Included here is a (commented out) example panel to be used as a
template for the new experimental panels. Since these panels will come
and go it is nice to have a reference in the code.

Differential Revision: https://developer.blender.org/D6203

Merge branch 'blender-v2.81-release'

Fix dyntopo sculpt not setting vertex indices dirty

This is an old bug exposed by new cursor drawing
which uses vertex indices.

Cleanup: clang-format

Merge branch 'blender-v2.81-release'

Merge branch 'blender-v2.81-release'

Cleanup: spelling

Cleanup: clang-format

Merge branch 'blender-v2.81-release'

Fix in addition to T61432: Sampling Subframes not working 2.8

As mentioned in the discussion, emission from particles did not make use of subframes. This commit resolves this issue.

Stretch To: implement a mode similar to Damped Track for rotation.

Most of the time Stretch To is used in actual rigs, like BlenRig
or Rigify, in combination with Damped Track to handle rotation
before the stretch, because it produces rotations more appropriate
for organic deformation, and doesn't flip because of internal
gimbal lock.

The prevalence of this pattern suggests that Stretch To should
support that kind of rotation directly as an option.

Differential Revision: https://developer.blender.org/D6134

Stretch To: clean up the math code in the implementation.

Combine computing `size` and normalizing the matrix, invert the
direction of `vec` to avoid negating it later, use `rescale_m4`
instead of matrix multiplication to scale the final result.

Differential Revision: https://developer.blender.org/D6134

Merge branch 'blender-v2.81-release'

Fix T70875: Library Override: Clicking an Library Overriden Object crashes Blender.

We also need to rebuild the whole collection/viewlayer object cache
thing when we relink an objector collection in a collection (since it
might be part of a view layer).

Again, usual disclaimer about how inneficient this is currently, needs a
serious refactor to only tag caches as dirty, and actually rebuild the
whole thing on access.

Cleanup: remove debugging prints for bpy.msgbus

Merge branch 'blender-v2.81-release'

Cycles: Fix strict compiler warning

Pointer used for math arithmetics in assert().
CUDA device pointer is actually an integer type, not a pointer.

Merge branch 'blender-v2.81-release'