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Some summary of changes:
- Don't use DEG prefix for types and enumerator values:
the code is already inside DEG namespace.
- Put code where it locally belongs to: avoid having one
single header file with all sort of definitions in it.
- Take advantage of modern C++11 enabled by default.
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There were at least three copies of those:
- OB_RECALC* family of flags, which are rudiment of an old
dependency graph system.
- PSYS_RECALC* which were used by old dependency graph system
as a separate set since the graph itself did not handle
particle systems.
- DEG_TAG_* which was used to tag IDs.
Now there is a single set, which defines what can be tagged
and queried for an update. It also has some aggregate flags
to make queries simpler.
Lets once and for all solve the madness of those flags, stick
to a single set, which will not overlap with anything or require
any extra conversion.
Technically, shouldn't be measurable user difference, but some
of the agregate flags for few dependency graph components did
change.
Fixes T58632: Particle don't update rotation settings
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Among all the lines moved around, the general idea is quite simple.
Actually, there are two ideas implemented there.
First one, is when object itself is tagged for update, we tag its
point cache component for evaluation, which makes it so point cache
is properly reset. We do it implicitly because otherwise we'll need
to go everywhere and add explicit tag in almost all the properties.
Second thing is, we link all collider and force fields to a point
cache component using special type of link. This type of link only
allows flush if change is caused by a user update. This way reset
does not happen when change is caused due to animation, but will
properly happen when user causes indirect change to the objects
which are part of physics simulation.
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Only do GPU material updates through depsgraph evaluation now. This was
already happening for material, just missing for the world.
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The editors update callback was getting the COW datablock, it should be the
original where the preview icons are stored.
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If something is a list of data, it is to be called list, and data
is to be called data. No need to call list a data and data a weird
two letter abbreviation.
Clarity is our friend!
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This makes tagging much more generic and make the world updates more in
line with the new tagging system (Depsgraph).
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See comment for INVALIDATE_ON_FLUSH.
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This introduces a new depsgraph API for getting updated datablocks,
rather than getting it from bpy.data.
* depsgraph.ids_updated gives a list of all datablocks in the depsgraph
which have been updated.
* depsgraph.id_type_updated('TYPE') is true if any datablock of the given
type has been added, removed or modified.
More API updates are coming to properly handle multiple depsgraphs and
finer update granularity, but this should make Cycles work again.
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Previously they would have been replaced with flag from original
datablock, which is not what we want.
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This way we can avoid re-evaluation of certain parts of datablock
when something unrelated has changed.
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This will reduce amount of needless auto-override checks, at least when
not touching anything related to overriding IDs...
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Unless there is an external action from an user, there should not
be need in re-copying original datablock to a copied one.
This brings performance up from 5fps to 11fps with Spring runcycle
(performance in master is 14fps).
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Currently unused, but will become handy to check whether ID needs
to have COW update to be run.
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- When returning the number of items in a collection use BLI_*_len()
- Keep _size() for size in bytes.
- Keep _count() for data structures that don't store length
(hint this isn't a simple getter).
See P611 to apply instead of manually resolving conflicts.
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General idea of the fix: skip the whole draw manager callback madness which
was used to tag object's engine specific data as dirty. Use generic recalc
flag in ObjectEngineData structure instead. This gives us the following
benefits;
- Sovles mentioned bug report.
- Avoids whole interface lookup for opened viewports for EVERY changed ID.
- Fixes missing updates when viewport is temporarily invisible.
Reviewers: dfelinto, fclem
Differential Revision: https://developer.blender.org/D3028
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This way callbacks will know which depsgraph is being changed, and where
evaluated data is coming from.
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Helps in cases of not very complex scenes and lots of system threads available.
A bit hard to measure change on it's own, it works best with the upcoming
changes and gives measurable improvements.
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Those pointers are never to be aliased, so let's be explicit about this and hope
compiler does save some CPU ticks.
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Now all the fine-tuning is happening using parallel range settings structure,
which avoid passing long lists of arguments, allows extend fine-tuning further,
avoid having lots of various functions which basically does the same thing.
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Wrap all arguments into TLS type of argument. Avoids some branching and also
makes it easier to extend things in the future.
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The goal is: have id->recalc flags set to components which got changed.
To make it possible for render engines to check on a more granular basis
what changed in the object. For example, is it a transform which changed
or is it just some ID property changed which has nothing to do with rendering.
The tricky part is: we don't want duplicated logic in tagging and flushing.
In order to avoid this duplication, we store ID recalc flag in the component
node type information. That type information could easily be accessed by both
tagging and flushing routines.
Remaining part of the changes are related on changing the way how tagging
works. The new idea here is to have utility function which maps update tag to
a component. This way we can easily set ID recalc flags right away. Without
any duplication of ID recalc flags set in multiple flag handler functions.
With all this being said, there should be no user measurable difference for
now, it's a gigantic basement for some upcoming work and fixes.
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Not only this helps merges form master to the branch, but also:
- Allows us to production-check changes as soon as possible.
- Avoids some unnecessary editors update about ID changes.
- Adds small optimization on queue size by always keeping one of the pointers
outside of the queue.
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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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The possible issue with just listing arguments is that it might not be clear
what particular value is used for. For example, is it a scene itself, or is
it a parent scene?
Not as if it's not very clear now, but better be explicit for the future,
and me reading code in 10 years.
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Looks like gcc is at the very least missing a warning here!
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This way we can inform editors about all edits at once. Currently this is not
used, but in the next commits we will inform editors about what exactly has
changed.
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This ends up in less number of memory writes, which should have positive effect
on performance.
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Also avoid once queue push for cases when current operation has multiple
outgoing relations.
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Those shouldn't be used anywhere for real now.
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There were following issues:
- This was used in a similar way of DEG's ID update callback. No reason to have
yet-another-way of informing editors/engines about changes. Better to keep
regular update mechanism usable and fast for those needs.
- It wasn't granular at all, and granularity in flags is something what we
need to support anyway, even for existing ID update.
- There is no reason to have it per-object. Depsgraph operates on IDs.
- It wasn't clear when and who clears the flag, and was possible to run into
conflicts.
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This way we can extend it much easier.
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