Consists of few simple steps.
Don't tag object data's bounding box as dirty before re-evaluaiton
Most of the time this actually tags evaluated mesh which will be tossed
away few lines below anyway. And this causes issues if the evaluated
mesh is actually owned by the mesh datablock.
The bounding box now has clear separation between original object data
and object data after modifiers, so this should not be causing any
issues.
Free evaluated mesh when owner mesh changes
Ensures that evaluated mesh shares the same settings as its owner when
updates related on animation system happens.
Depsgraph: Update mesh when its geometry settings changes
Allows to have options like autosmooth animated.
Reviewers: brecht, mont29
Differential Revision: https://developer.blender.org/D5030
19782e4f68