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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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This commit integrates the work done so far on the new dependency graph system,
where goal was to replace legacy depsgraph with the new one, supporting loads of
neat features like:
- More granular dependency relation nature, which solves issues with fake cycles
in the dependencies.
- Move towards all-animatable, by better integration of drivers into the system.
- Lay down some basis for upcoming copy-on-write, overrides and so on.
The new system is living side-by-side with the previous one and disabled by
default, so nothing will become suddenly broken. The way to enable new depsgraph
is to pass `--new-depsgraph` command line argument.
It's a bit early to consider the system production-ready, there are some TODOs
and issues were discovered during the merge period, they'll be addressed ASAP.
But it's important to merge, because it's the only way to attract artists to
really start testing this system.
There are number of assorted documents related on the design of the new system:
* http://wiki.blender.org/index.php/User:Aligorith/GSoC2013_Depsgraph#Design_Documents
* http://wiki.blender.org/index.php/User:Nazg-gul/DependencyGraph
There are also some user-related information online:
* http://code.blender.org/2015/02/blender-dependency-graph-branch-for-users/
* http://code.blender.org/2015/03/more-dependency-graph-tricks/
Kudos to everyone who was involved into the project:
- Joshua "Aligorith" Leung -- design specification, initial code
- Lukas "lukas_t" Toenne -- integrating code into blender, with further fixes
- Sergey "Sergey" "Sharybin" -- some mocking around, trying to wrap up the
project and so
- Bassam "slikdigit" Kurdali -- stressing the new system, reporting all the
issues and recording/writing documentation.
- Everyone else who i forgot to mention here :)
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curve geometry
The issue was caused by bevel object being automatically added to the scene graph
by dag_get_node() and had no incoming relations, even form the scene. This confused
scene update flush logic.
Now there'll be a scene relation added to such nodes, so they're always reachable
from the root node.
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This is mainly to make physics modifiers being able to work
with it. For other cases this main is not needed.
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matrix on objects with no geom data.
This hack should not be needed here, quoting Sergey, the actual issue comes from BKE_object_handle_update_ex,
which is calling BKE_object_where_is_calc_ex when it shouldn't.
Propper fix is depsgraph refactor topic, though.
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Do not generate materials/images/UVs if they are missing.
Now we spawn a panel ("Missing Data") with operators to generate the missing data and
pop a warning if user tries to paint without them.
The reason we have reverted this is that it is too easy to end up with more textures
than we wanted. It was impossible to enter texture paint without having textures added,
and code makes too many assumptions about what user may want.
Discussed during Sunday's meeting.
This might be a candidate for 2.72a but I'm not sure how other artists will take this
(and how refined and crash-free it is), better make a few iterations first.
And for interested parties...test please, don't wait until after a release to poke with such issues.
Also, add slot operator now adds a new unconnected image node in cycles. Only
used in the "Missing Data" panel. This should be a separate commit but I am squashing it into the same commit because
it relies too much on changes done here and can be reverted easily if complainstorm occurs again.
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Core of the issue is that pointcache handling in depsgraph were (re-) tagging
for update some objects on hidden layers, when all their dependencies remained
untag.
Since we do not want to update objects on hidden layers, take this data into account
when flushing pointcache.
Investigations and org patch by self, reviews, advices and final patch by sergey, many thanks! :)
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Free draw objects instead of tagging object update and doing
recalculation of derived meshes. The reason is that if user deletes all
slots and tries to paint, the system will invalidate the cached in
projection painting derivedmesh. This will promptly crash. Invalidating
the draw objects only is also much cheaper.
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Also avoid looping over all objects for texture paint checks when a
material changes, only check active object.
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internal.
This should eliminate some confusion when people use external render
engines.
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The issue was caused by the wrong objects order for
convertblender.c. Dependency graph totally missed
handling of this situation.
Fixed now, but it's not that pretty, don't try this
at home obviously. But consider this to be good enough
for the current dependency graph.
Details are in the build_dag_object().
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Yep, at last it's here!
There are a few minor issues remaining but development can go on in
master after discussion at blender institute.
For full list of features see:
http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.72/Painting
Thanks to Sergey and Campbell for the extensive review and to the
countless artists that have given their input and reported issues during
development.
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update image in Image Texture nodes
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A bit hackish solution for now, cleaner solution we'll look into as a
part of the new DAG project, when it's clear what kind of data is passed
to the evaluation callbacks.
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Now that Freestyle employs a separate Main, this workaround is no longer necessary.
Reviewers: sergey
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D513
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Opted to keep includes if they are used indirectly (even if removing is possible).
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This function used ugly hack with static variable which was
preventing some type checks in DAG nodes. Using this variable
form multiple threads is not considered safe, apparently.
Solved by moving this variable inside the DAGForest structure.
so it's global for the graph now, but different graphs does not
run into conflicts.
This required passing the forest to some functions, which doesn't
look so much nice, but don't want to spend time on making this
code look beautiful because it is really to be replaced by the
new dependency graph.
This is really bad bug actually which is must go to 'a'.
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Issue was caused by cycles setting scene frame which will update scene for
all the layers (not just visible ones) which confuses depsgraph making
objects which are needed as dependency are not really evaluated.
Made it so setting frame via scene.frame_set() which check whether update
need to be flushed to an invisible objects and do this if so.
Not ideal solution but seems to be safest at this point.
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It is possible that objects from dupli-groups depends on objects which are
not in the dupli-group. We do need this objects to be evaluated as well on
visible changes, so all dependencies for objects from the dupli-group are
met. Unfortunately, we don't have parent relations on this state, so we're
to use DFS over the whole DAG to gather such dependencies.
This is probably not so bad since visible update is called really rarely.
Reviewers: brecht
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D326
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updates.
This file crashes on loading with NULL pointer access to curve_cache:
{F77132}
The pdInitEffectors function was amalgamating the simple
collection of effector objects with an automatic precalculation for
curve guides and the like. This precalculation requires object data
that may not be available until the DAG has finished.
Since for DAG dependencies only the list of effectors is required,
added an argument to disable precalculation when collecting effectors.
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its parent
This is rather a workaround which only works because curve evaluation is only called
for a temporary object. Not a big deal if we'll skip path creation for such objects.
Still would need to think of general solution.
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it is possible that different windows shares scene but displays different
layers. And it's also possible that different areas in the same window will
show different layers.
First case was violated in `dag_current_scene_layers()` which only checked
scene layers only once and if multiple windows shares the same scene only
one window was handled. Now made it so layers from all windows will be
squashed together into a single `DagSceneLayer`. This mainly solves issue
with `DAG_on_visible_update()` which didn't work reliable with multiple
open windows.
Second case required call of `DAG_on_visible_update()` when changing space
are type.
This commit slows things a bit actually because `dag_current_scene_layers()`
is actually called on every main WM loop iteration. It is possible to speed
some logic up perhaps. Not sure it's so much critical to do now because there
are unlikely to be more than few windows open anyway.
Will rather think of skipping all that flushing things if no objects are
tagged for update actually.
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