Blender Git Loki

further constraint related crash fixes

crash fix attempts

can still crash if you refracture a child object while its attached to others (constraints become invalid)

re-implementation of external constraints

external constraints load / refresh fix

fix potential memory leak

another implementation attempt for external constraints

first attempt of brickify fracture

Fix part of T53080: don't use current scene world for icon previews.

This can be very slow if it contains a big texture, and it's not
necessarily setup in a useful way anyway, and materials can be used
in multiple scenes.

fix for "double rotation" in bind

if both objects were rotated, rotations were added up unnecessarily.

fractal boolean with regular alignment, animation bind tweaks

inner material is part of presets now

Fix (unreported) crash when duplicating a FileBrowser window in preview draw mode.

We did not clear preview or smoothscroll timers pointers in copy code...

Fix missing group duplicated by hair in render

Was happening when viewport visibility on the particle system is disabled.
This became an issue after c45afcf, but the actual issue goes a bit deeper
and the following aspects were involved:

- Relations builder for particle system was ignoring particle system if
it's visibility is not enabled for viewport. This is something what
shouldn't have been done -- depsgraph relations are supposed to be the
same no matter if it's viewport or render.

- Relation builder was only dealing with duplication set to object, but
was ignoring group duplication.

This is NOT a regression since 2.79, but a regression since 2.79a-rc1.

fix an ffmpeg qtrle crasher

Fix T53686: VSE Render crash when zooming timeline.

Epic fail from recent 'security' fixes (rBe04d7c49dca9). ;)

To be backported to 2.79a!

Fix T53962: Cycles OpenCL compile error in some scenes.

This part of 212a8d9e needed to be ported over for 2ca933f to work.

Fix possible concurency issue in mesh normals computation.

Failure in own code from last December, thanks @sergey for finding it.

To be backported to 2.79a.

Fix T52634: EditMesh Remove doubles could hang

A single diagonal axis was used for sorting coordinates,
the algorithm relied on users not having vertices axis aligned.

Use BLI_kdtree to remove doubles instead.

Overall speed varies, it's more predictable than the previous method.
Some typical tests gave speedup of ~1.4x - 1.7x.

BLI_kdtree: utility function to remove doubles

animation bind rotation fix, some dynamic mode fixes