Blender Git Loki

Transform: re-revert new user-axis-first behavior

This restores old behavior but leaves in new code
which is more flexible.

See: 6491d50d02b7 for feedback on why this isn't ideal.

Revert "Transform: use scene-orientation for MMB axis constraint"

This reverts commit 78a6c2e12c8d144d10f759d05cbb3503f555883b.

UI: add back clip editor tool tabs until there is a toolbar.

Fix T57653: Fix T58075: Crash when switching between Edit and Sculpt/Paint modes.

Sculpt (and paint) modes rely on valid evaluated data at their initialization.

Added code to ensure that in `ED_object_mode_toggle()`, when relevant
toggle operator requires it (looks like sculpt/paint should be the only
ones affected, although particle edit may be too...).

Merge branch 'master' into blender2.8

Atomic: Avoid conflicts with definitions in other areas

While atomics library was trying to use "user-space" defined
LIKELY() and UNLIKELY(), this is not always true that user
code was checking for those macro coming from an unrelated
area.

UI: menu items for Ctrl-Tab dope sheet/graph switching

Make this shortcut discoverable.

UI: update shortcut display to check space cycling

Keymap: cycle space-subtypes on successive presses

Some space types are exposed as multiple space types,
previously the key binding to set the space type would use the last
used space-type.

Now pressing the key again cycles to the next space sub-type.

Without this, shortcut display is confusing since some space types share
a key. Keymap display will need to be updated to support this.

UI: support enum key shortcut detection

Shows shortcuts in space-selector.

Fix paint initialization, incorrect pointer checks

Fix T58125: UV Editor transform fails

Debug: Assert to ensure layer iterator uses a 3D view

Merge branch 'master' into blender2.8

Cleanup: correct typo, no need for ./ prefix

Fix leak in CPU brand check

Cleanup: simplify transform orientation cycling

Remove dummy first index, store a pointer to the user orientation
instead of having it store twice (which could get out of sync).

Cycles: Add sample-based runtime profiler that measures time spent in various parts of the CPU kernel

This commit adds a sample-based profiler that runs during CPU rendering and collects statistics on time spent in different parts of the kernel (ray intersection, shader evaluation etc.) as well as time spent per material and object.

The results are currently not exposed in the user interface or per Python yet, to see the stats on the console pass the "--cycles-print-stats" argument to Cycles (e.g. "./blender -- --cycles-print-stats").

Unfortunately, there is no clear way to extend this functionality to CUDA or OpenCL, so it is CPU-only for now.

Reviewers: brecht, sergey, swerner

Reviewed By: brecht, swerner

Differential Revision: https://developer.blender.org/D3892

UI: expand set origin in specials menu

Also remove menu, expand operator instead.

Fix transform axis orientation cycling

This ignored operator defined orientation.