Blender Git Loki

Get file read/write and undo/redo to work

Fix T52213: Enum drivers no longer work

Regression in D1812: PyDriver variables as Objects

Taking the Python representation is nice in general
but for enums it would convert them into strings,
breaking some existing drivers.

Merge branch 'master' into blender2.8

Resolve T45301 by adding option for old behavior

Some users really liked previous behavior,
so making it an option.

Cursor Lock Adjustment can be disabled to give something close to
2.4x behavior of cursor locking.

When lock-adjustment is disabled placing the cursor the view.
This avoids the issue reported in T40353
where the cursor could get *lost*.

Cleanup: clear deprecated UI flags

Also adds cursor-lock flag, to be used in next commit.

Added Average and weighting modes to merge.

Merge branch 'blender2.8' into greasepencil-object

Cleanup: Remove duplicate header definition

Fix missing object after reload

When reload a file the lattice object assigned to the modifier was missing.

The object neede a relink inside the modifier

Fix T52156: Hair dynamics broken with density texture

Even strands that were excluded by the density texture were being added
to the DM passed to cloth, but these ended up having some invalid data,
because they were not fully constructed.

This simply excludes `UNEXISTED` particles from the DM generation, as
would be expected.

Changed Z-Vector calculation to orthographic. Makes more sense the z-vec is orthogonal to the plane the silhouette is placed on.
Added Z intersection test/approximation. Inaccurate with larger smoothing factors.

Merge branch 'blender2.8' into topbar

Started connecting the silhouette to existing geometry. Intersecting vertices get detected. (define DEBUG_DRAW to see)

Fix crash when duplicating object

This fixes null pointer check fiasco.

Fix T52148: Point Density Texture ID User decrement error related to the Object field.

Note that fix is not perfect, systematically make refcounting of all IDs
assigned to node's id pointer, which breaks the 'do not refcount
scene/object/text datablocks' principle...

But besides that principle being far from ideal in general, it becomes
pretty much impossible to apply when using //generic// ID pointer,
unless we add some kind of type data to that pointer somehow.

So for now, better to live with that, than having broken usercount.

Depsgraph: Re-use evaluated mesh across frames and remove time dependency from all CoW components

This commit is a work forward having less updates during playback, which speeds
things up a lot here. The idea is simple: stop update all copy-on-write
datablocks (which implies full re-evaluation actually) on frame change and
re-use existing evaluated meshes as much as possible.

This brings playback speed to 24 fps on the dino test scene here. Performance
drops down a lot when armature is animated tho, but that's because of need of
tangent space calculation which we can't do much about from just a dependency
graph.

Hopefully this doesn't make copy-on-write too unstable, quick tests here are
surviving fine.

Fix T52212: Vgroups doesn't work after Carve Boolean

Fix potential 'divide-by-zero' in our UI fitting code.

Reported by coverity, better fix even if highly unlikely to happen...

Fix T52208: Using UI_BUT_REDALERT flag for UI_BTYPE_KEY_EVENT buttons crashes Blender.

but pointer was not assigned in that case...

Revert "Squashed commit of the following:"

This reverts commit fc4d697408fe6eb5e7ade9e42f1be3b576889a72.