Some notes:
* `Image.cache` acts as some kind of 'main' cache, when it is NULL
(could not be restored), other caches should also be cleared. Oddly
enough, previous code was not clearing **all** caches, could not find
any reason for that behavior, so new code does a full clear.
* `imamap` is still used for Node previews from scenes' compositor,
however this is actually fully disabled in `direct_link_node()`.
* For render slots we cannot use offsetof as third part of the cache
key, so we are using a hash of the slot's name instead.
As far as I can tell, this fixes T76989: Visual glitches when undo after
reload multiple images by script (in Material Preview).
Main goal here is to have better specificity using cache keys, to avoid
same memroy address being re-used messing up with cache pointers
restoration after undo had to re-read a data-block.
Once all caches handling are ported to this new system, it should fix
random issues like the one reported in T76989.
Part of D8183, refactoring how we preserve caches across undo steps in
readfile code.
Changed variable names from mmd, mds, mfs, and mes to fmd, fds, ffs, and fes. The author of this commits lights a candle for all the merge conflicts this will cause.
The shortcuts act on the modifier with its panel under the mouse.
The following shortcuts are enabled by default:
- Remove modifier: X, Delete
- Apply modifier: Ctrl A
- Duplicate modifier: Shift D
More shortcuts can be added in the keymap.
Each panel can now store a custom data RNA pointer, and a new
function is added to get the custom data for the panel under the
cursor. This custom data could be used to refactor the "List Panel
System" to generalize it and integrate it further with RNA.
The same functionality will be added in further commits where it
applies to constraints, grease pencil modifiers, and effects.
Differential Revision: https://developer.blender.org/D8031
Prelimenary step to fix T77460.
Not sure how or when that thing was done, but since that call walks
around collections relationships, it's an utterly critical violation of
liblinking principles (code here should never, ever 'get outside' of its
own ID scope).
This was wroking so far only because code called through this function
(`BKE_collection_parent_relations_rebuild`) was only following parents
pointers (in `BKE_collection_find_cycle()`), which would be either valid
or non-existent.
But next commit is going to change that to also check collection's
objects instancing of other collections.
The current particle state is stored in a `CustomData` instance and
the cache is stored in `PointCache`.
The current state exists on the copy-on-write copies of the simulation,
while the cache only exists in the original data block.
This patch implements a temporary trivial particle simulation that does not
use the node system yet. It is used for testing and will be replaced soon.
`PointCache` still has some limitations that need to be overcome using
separate refactorings. For example, we need to be able to store the number
of particles in the point cache. Also we need to change which attributes
are stored for a particle system more dynamically than is currently possible afaik.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D7836
