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Yes, again.
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This commit actually adds some G.main... but at much, much higher level
than the ones it removes, so should still be better ;)
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Makes it easier to add or remove fields needed to update relations.
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Now it's possible to have debug messages for following things:
- Graph construction
- Graph evaluation
- Graph tagging
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Constraint
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We might implement other things to dump into graphviz, so better to
start having explicit names.
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This needs to be redone anyway, to correspond to possibly new priorities
calculated for evaluaiton.
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Currently this is a no-visible-changes change, but the idea is to use this
dedicated flag to tell which exact components of ID changed, make it more
granular than just OBJECT and OBJECT_DATA. Allow setting this field based
on what components new dependency graph flushed on evaluation.
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This is a part of ongoing work in Blender 2.8, where we need to replace
`object->id.tag & LIB_TAG_ID_RECALC_DATA`
with
`object->data->id.tag & LIB_TAG_ID_RECALC`
Should be no user measurable difference.
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`cd_flag` tends to be used for CustomData flags in mesh area, while for
library_query those are rather callback flags...
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This aims at always ensuring that ID.newid (and relevant LIB_TAG_NEW)
stay in clean (i.e. cleared) state by default.
To achieve this, instead of clearing after all id copy call (would be
horribly noisy, and bad for performances), we try to completely remove
the setting of id->newid by default when copying a new ID.
This implies that areas actually needing that info (mainly, object editing
area (make single user...) and make local area) have to ensure they set
it themselves as needed.
This is far from simple change, many complex code paths to consider, so
will need some serious testing. :/
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Current implementation more or less indiscriminately links physics
objects to colliders and forces, ignoring precise details of layer
checks and collider groups. The new depsgraph seemed to lack some
such links at all. The relevant code in modifiers suffers from a
lot of duplication.
Different physics simulations use independent implementations of
collision and similar things, which results in a lot of variance:
* Cloth collides with objects on same or visible layer with dupli.
* Softbody collides with objects on same layer without dupli.
* Non-hair particles collide on same layer with dupli.
* Smoke uses same code as cloth, but needs different modifier.
* Dynamic paint "collides" with brushes on any layer without dupli.
Force fields with absorption also imply dependency on colliders:
* For most systems, colliders are selected from same layer as field.
* For non-hair particles, it uses the same exact set as the particles.
As a special quirk, smoke ignores smoke flow force fields; on the other
hand dependency on such field implies dependency on the smoke domain.
This introduces two utility functions each for old and new depsgraph
that are flexible enough to handle all these variations, and uses them
to handle particles, cloth, smoke, softbody and dynpaint.
One thing to watch out for is that depsgraph code shouldn't rely on
any properties that don't cause a graph rebuild when changed. This
was violated in the original code that was building force field links,
while taking zero field weights into account.
This change may cause new dependency cycles in cases where necessary
dependencies were missing, but may also remove cycles in situations
where unnecessary links were previously created. It's also now possible
to solve some cycles by switching to explicit groups, since they are
now properly taken into account for dependencies.
Differential Revision: https://developer.blender.org/D2141
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The first character of the ID type was used to tag IDs for updates which
is weak since different IDs can have the same first character (for
example meshes, materials and metaballs), causing unnecessary updates of
unrelated IDs.
Now we use a unique index per ID type to tag for updates, unifying IDs
arrays indexing along the way.
Reviewers: sergey, mont29
Differential Revision: https://developer.blender.org/D2139
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All in all, this patch adds an Alembic importer, an Alembic exporter,
and a new CacheFile data block which, for now, wraps around an Alembic
archive. This data block is made available through a new modifier ("Mesh
Sequence Cache") as well as a new constraint ("Transform Cache") to
somewhat properly support respectively geometric and transformation data
streaming from alembic caches.
A more in-depth documentation is to be found on the wiki, as well as a
guide to compile alembic: https://wiki.blender.org/index.php/
User:Kevindietrich/AlembicBasicIo.
Many thanks to everyone involved in this little project, and huge shout
out to "cgstrive" for the thorough testings with Maya, 3ds Max, Houdini
and Realflow as well as @fjuhec, @jensverwiebe and @jasperge for the
custom builds and compile fixes.
Reviewers: sergey, campbellbarton, mont29
Reviewed By: sergey, campbellbarton, mont29
Differential Revision: https://developer.blender.org/D2060
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Replaces `G.is_rendering` with `use_render_params` argument.
This is needed for Cycles, which attempts to restore render-preview settings from particles,
after it gets its own particle data, but fails to restore because
`G.is_rendering` was being checked in psys_cache_paths (and other places).
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rendering
The issue was caused by missing indirect dependencies from other scenes in the
current scene depsgraph, which was causing some threading conflicts.
Not sure what would be ideal solution here, for now use stupid but rather robust
approach to solve that. Maybe there's something better to do here tho.
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Changing the filepath wouldn't reload the font even after calling scene.update().
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BKE_main_id_tag_/BKE_main_id_flag_ were horrible naming now that we split those
into flags (for presistent one) and tags (for runtime ones).
Got rid of previous 'tag_' functions behavior (those who were dedicated shortcuts
to set/clear LIB_TAG_DOIT), so now '_tag_' functions affect tags, and '_flag_'
functions affect flags.
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Issue was caused by update RNA callbacks freeing the dependency
graph, which is only needed to tag depsgraph for rebuild.
Solved by using a flag for the depsgraph which indicated that it
is to be rebuilt.
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While it's not really working reliably to drive something on runtime
it's handy to have such possibility to tune particle system using
proxies in the scene files.
Just another quick thing for the Nieve project.
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This is purely internal sanitizing/cleanup, no change in behavior is expected at all.
This change was also needed because we were getting short on ID flags, and
future enhancement of 'user_one' ID behavior requires two new ones.
id->flag remains for persistent data (fakeuser only, so far!), this also allows us
100% backward & forward compatibility.
New id->tag is used for most flags. Though written in .blend files, its content
is cleared at read time.
Note that .blend file version was bumped, so that we can clear runtimeflags from
old .blends, important in case we add new persistent flags in future.
Also, behavior of tags (either status ones, or whether they need to be cleared before/after use)
has been added as comments to their declaration.
Reviewers: sergey, campbellbarton
Differential Revision: https://developer.blender.org/D1683
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Vertex parent was not registered as CPU data requirement.
Should be in the 'a' release.
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since some IDs (objects) are not 'refcounted' while others (textures) are...
Partial merge from id-remap branch.
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Depsgraph customdata flag was set on the parent,
then cleared once the parent object was handled.
This is initialized to zero for new nodes, no need to clear.
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depsgraph only)
When a modifier was animated by a NLA strip, this animation was not working when using
the old depsgraph. This was because the code which checks if a NLA strip affects any
modifiers was missing - specifically, it was originally left out as it was thought
that it was unlikely that many users would need this, but adding in those checks
would have a (slight) negative effect files where there are heaps of NLA strips
but modifiers animated this way were absent.
The new depsgraph however doesn't suffer from this problem, as these sorts of checks
need ot be built into the graph-building stage for everything to work, so these links
had already been added.
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Reported by Campbell on IRC, partial patch by him as well.
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Issue was caused by blender internal accessing data from DNA during rendering.
There's no simple solution to make stuff thread safe, so for now simply restart
rendering on frame update.
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Cases like using subsurfed object as a boolean operand can't be evaluated
on GPU and needs to have all the CCG on CPU.
This commit resolves existing configuration to survive, but new configurations
would need to have some sort of forced object update so all the data is being
moved on CPU if it was previously on GPU.
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