Just adds sequencer operation and links possible sound ID to it.
No functional changes, just moving towards sound system integration
into the dependency graph.
Currently those IDs are not covered by copy-on-write mechanism since
that ruins the current design of BKE_sound, But this change allows to
move towards system where sound handlers are only valid for an evaluated
ID datablocks.
This was an attempt to speed up motion path calculation, which didn't
really work in real world animation files, where animators already
hide and disable all the heavy collections. Filtering approach also
doesn't allow to have multiple frames evaluated in multiple threads
easily.
Filtering also adds extra complexity on keeping the graph in a correct
and consistent state.
Fixes T64057: Blender crash when use motion paths
* The cache file datablock is now evaluated as part of the dependency graph,
creating/freeing the Alembic file handle matching the current frame.
Modifiers and constraints depend on this evaluation.
* Cache file handles and readers now only exist on COW datablocks, never the
original ones.
* Object data paths are flushed back to the original for the user interface.
* The cache file keeps a list of all readers associated with its handle, and
automatically frees them when the handle is freed. This kind of sharing of
data across datablocks is weak but we have no better mechanism for it.
Fix T62720: Alembic sequences not working and crashing
Differential Revision: https://developer.blender.org/D4774
This is a part of T61296: Crash with animated b-bone segments.
Consider animated/driven bendy bones segments as something what requires
special bendy-bones operation and relation in the dependency graph.
This is because it is more beneficial from a performance point of view
to not build operations if they are not needed. But if the property is
animated it is not possible to make any reliable decision based on just
a property value.
Differential Revision: https://developer.blender.org/D4739
Should be no functional changes, just switching code to use more
generic checks now.
One thing which goes a bit deeper than that is check for whether
base is a part of dependency graph. This is now done by explicitly
tagging corresponding ID node (of an object) rather than doing
animation check again.
Allows to speed up lookups like "is property FOO of data BAR animated".
Can be used to optimize object's visibility check, but also allows to
check animation on bones without too much of time penalty.
The cache is shared between both nodes and relations builder.
Currently is not used, just a boilerplate for an upcoming changes in
an actual logic.
The driver code was almost there, but didn't work because ID nodes
have no outlinks - and using links won't be safe anyway because of
ordering issues. Instead, just loop over all IDNodes.
Animation is fixed simply by referring to ARMATURE_EVAL instead of
BONE in construct_node_identifier - the bArmature ID doesn't have
BONE components in any case, so the old identifier can't work.
During driver var evaluation, the code directly skips to the proxy
object if present, so the dependencies should reflect that, instead
of inventing extra relations to pretend as if the values were
first copied from the proxy - they actually aren't.
The invented dependencies can't work without cycles in complex but
meaningful cases, e.g. drivers on armature data that depend on pose.
This alters the changes from 72cbf966fb to be more correct.
Since it is a continuous cycle, there's no need to repeat the
name of the previous bone. Also, dot is a common symbol in object
and bone names, so use '/' instead for node nesting.
Targeting a different object always requires its transform,
and normally dependencies should go to the solver node.
ITASC is quite broken so special case it until fixed.
Although technically evaluating the proxy copy nodes doesn't require
the parent bone to be copied, other nodes that depend on the bones
sometimes expect the parent to be ready. To meet this expectation
it's necessary to add the dependency to the graph.
As reported in T63582, it can cause chan_array to be not ready.
To reliably avoid crashing, the only easy way seems to be to
create the index during COW -- maybe @sergey has a better idea.
The bug is caused by problems in the dependency graph. Unfortunately,
fixing is not just a matter of fixing the graph, because correct
dependencies would cause a cycle here and in other reasonable use
cases. The real fix thus requires refactoring Spline IK to require
curve data only in the actual evaluation phase, and not in POSE_INIT_IK.
In addition, this separates the normal bone evaluation loop from
Spline IK computations for two reasons:
- That still needs to be done even if spline IK can't evaluate
due to missing curve data.
- It should reduce issues with induced shearing, as Spline IK now
controls how parent-child relations are handled in the chain, and
can take care to only carry over rotation and location.
Random place in the modifier stack can not be referenced,
so it doesn't make sense to sue GEOMETRY component as a
FROM operation.
So now drivers on modifiers are driving GEOMETRY component,
but are using PARAMETERS as a source for variables.
BKE_mesh_new_nomain automatically added a CD_ORIGINDEX layer initialized to 0,
which was never filled in correctly. In 2.7 the equivalent function used to
modify the source derivedmesh and add valid original indices to it, but this
is no longer possible in the new design and was quite unpredictable anyway.
Now instead rely on mesh_calc_modifiers and the depsgraph to determine when
CD_ORIGINDEX should be added.
Was a mistake in the recent change.
The idea here is: manual should invalidate point cache, but
rigid body simulation should only happen after point cache
was ensured to be in the correct state.
There was missing flush from transform update to the point cache
reset. Caused by the fact that when update happens in the "middle"
of component all the component operations will be tagged for update
(since the intermediate state is not stored), but that will not
flush updates to other operations since that would cause too much
of updates.
This now we tag point cache for reset after evaluation operation
but before final transform and before rigid body world.
The issue is a feedback loop with point cache reset operation.
Solved by introducing extra node which ensures object's transformation
is ready for simulator input. Allows to route relations without causing
a fake dependency cycle now.
