Line art uses `DEG_OBJECT_ITER_BEGIN` to load all objects that has a
geometry in the scene, which is kind of a hack since the beginning. This
left potential problem where the iterator could go through some objects
that line art didn't have a dependency on (e.g. other grease pencil
objects):
- Since those "other" objects often evaluates fast enough, so
line art always end up having valid data from everywhere after lengthy
mesh evaluation prior to itself, so this problem was not prominent.
- However, in rare cases, there are other objects that takes a lot of
time to evaluate, this causes line art to potentially iterate to objects
that are still invalid.
This fix will build a `Vector<Object *>` during `update_depsgraph`, and
use such list inside `DEGObjectIterSettings` to filter out objects that
the modifier isn't dependent on, thus remove the possibility of reading
objects that hasn't been evaluated.
Since Line art will not add grease pencil objects as potential geometry
inputs, all mesh/curve types of geometries generated by geometry nodes
modifier directly inside other grease pencil objects won't be loaded.
This can be mitigated by having a third mesh object that reads the
result from the grease pencil object that generates geometries, then
directly output them for line art to read.
This also fixes#128888.
Pull Request: https://projects.blender.org/blender/blender/pulls/128890
The build modifier crashes when getting lengths of cyclic curves because `evaluated_points_by_curve`
was previously always called with `cyclic` parameter set to `false`.
The `cyclic` parameter necessary for `curves::segments_num` to return correct number of segments.
Pull Request: https://projects.blender.org/blender/blender/pulls/128955
These attributes are not guaranteed to exist. So they should either be used
conditionally, or with a fallback value. The fallback value for the opacity is
obvious, but for the radius it's more tricky. There is not a consistent fallback
value across Blender unfortunately. The one I used here is used in a couple of
places.
Pull Request: https://projects.blender.org/blender/blender/pulls/128847
The layer/material/vertex group filter properties had already been added but they were
not exposed in the UI. Also the influence panel was missing. Now added in "rna_" function
of the modifier.
Pull Request: https://projects.blender.org/blender/blender/pulls/128973
Removes unused GPv2 functions in blenkernel.
Notes:
- Functions for layer masks are still in use, but annotations never
have layer masks in the first place. Would be good to remove the data
structures so we can remove the functions too.
- Some multi-frame edit functions are also still nominally used, but
multi-frame editing is not an active feature for annotations. This
should also be removed.
Pull Request: https://projects.blender.org/blender/blender/pulls/128709
This adds an option `all_keyframes` to the `object.modifier_apply` operator.
With the option enabled, the operator will iterate through all the keyframes,
then apply the modifier and merge the result back into the original
object. This is only done for Grease Pencil objects.
This is how the default `Apply` operation worked in GPv2. This adds the
functionality back but also keeps the current `Apply` behavior for consistency
with other object types.
The UI is also changed to show both options in the dropdown menu.
Again, this is only shown for Grease Pencil objects.
With Geometry Nodes it's possible to add new layers to the geometry.
When applying, this will create a single keyframe on the first frame of
evaluation. Layers with duplicated names in evaluated geometry will
be deduplicated. It's also possible to have layers with empty names.
When applying these get renamed to `Layer` (and `Layer.001` etc.
when such a layer already exists in the original geometry).
Pull Request: https://projects.blender.org/blender/blender/pulls/128487
Caused by ba28469e45.
The `total_size()` function excludes the start offset now, which meant
that the `dst_curve_num` and `dst_point_num` were off.
The fix makes sure to include the src curves and points totals in the
destination if `keep_original` is true.
Pull Request: https://projects.blender.org/blender/blender/pulls/128523
This does the following changes:
* Show info "warnings" in modifier too. Previously those were skipped. The
different behavior of info/warning/error messages causes confusion.
* Add a new `Warnings` panel that only shows when there are warnings. In its
title, it shows how many warnings there are.
* In the panel, warnings are sorted by severity and alphabetically.
Pull Request: https://projects.blender.org/blender/blender/pulls/128395
Fixes incorrect usage of StringRef in new grease pencil code, where
`.data()` was passed as a null terminated C string. Removes the now
unnecessary `std::string` creation that attribute accessors used to
fix that problem.
Pull Request: https://projects.blender.org/blender/blender/pulls/128298
Layer selectors in Line Art and all modifier's Influence panel was
using the Grease Pencil icon, instead of the Grease Pencil Layer icon.
At the moment they are similar so it's easy to miss. But soon there
will be a new icon for layers so better use the right one.
The Line Art modifier was using Grease Pencil icon for materials
selector.
This adds a new type of zone to Geometry Nodes that allows executing some nodes
for each element in a geometry.
## Features
* The `Selection` input allows iterating over a subset of elements on the set
domain.
* Fields passed into the input node are available as single values inside of the
zone.
* The input geometry can be split up into separate (completely independent)
geometries for each element (on all domains except face corner).
* New attributes can be created on the input geometry by outputting a single
value from each iteration.
* New geometries can be generated in each iteration.
* All of these geometries are joined to form the final output.
* Attributes from the input geometry are propagated to the output
geometries.
## Evaluation
The evaluation strategy is similar to the one used for repeat zones. Namely, it
dynamically builds a `lazy_function::Graph` once it knows how many iterations
are necessary. It contains a separate node for each iteration. The inputs for
each iteration are hardcoded into the graph. The outputs of each iteration a
passed to a separate lazy-function that reduces all the values down to the final
outputs. This final output can have a huge number of inputs and that is not
ideal for multi-threading yet, but that can still be improved in the future.
## Performance
There is a non-neglilible amount of overhead for each iteration. The overhead is
way larger than the per-element overhead when just doing field evaluation.
Therefore, normal field evaluation should be preferred when possible. That can
partially still be optimized if there is only some number crunching going on in
the zone but that optimization is not implemented yet.
However, processing many small geometries (e.g. each hair of a character
separately) will likely **always be slower** than working on fewer larger
geoemtries. The additional flexibility you get by processing each element
separately comes at the cost that Blender can't optimize the operation as well.
For node groups that need to handle lots of geometry elements, we recommend
trying to design the node setup so that iteration over tiny sub-geometries is
not required.
An opposite point is true as well though. It can be faster to process more
medium sized geometries in parallel than fewer very large geometries because of
more multi-threading opportunities. The exact threshold between tiny, medium and
large geometries depends on a lot of factors though.
Overall, this initial version of the new zone does not implement all
optimization opportunities yet, but the points mentioned above will still hold
true later.
Pull Request: https://projects.blender.org/blender/blender/pulls/127331
We already have the `description` property on panels but are currently not
displaying it when hovering over a panel header. With this patch, the
descriptions will be shown in group nodes as well as the geometry nodes
modifier.
I had to do two lower level changes for layout panels because it didn't work
with tooltips properly.
* Tooltips make the label in the panel header interactive, but clicking to
open/close the panel should still work.
* The tooltip should disappear when clicking on the header. This is consistent
with tooltips in other places.
Pull Request: https://projects.blender.org/blender/blender/pulls/127852
Previously, it was only possible to bake to disk with geometry nodes. This patch
adds support for storing the baked data directly in the .blend file.
By default, new bakes are stored in the .blend file now. Whether a new bake
should be packed or stored on disk can be configured in two places: in the
properties of the bake node and in the bake panel of the modifier. These
settings don't affect existing bakes, only the next bake.
To unpack or pack an individual bake, there is a new operator button next to the
bake button. The icon and the label below indicate where the bake is currently
stored. The label now also contains the size of the bake.
To unpack or pack all bakes, the `File > External Data > Pack Resources / Unpack
Resources` operators can be used. The unpack operator also has a new title that
mentions the number if individual files separate from the number of bakes. This
works better than just listing a number of files because a bake can consist of
many files.
Pull Request: https://projects.blender.org/blender/blender/pulls/124230
The build modifier did not walk the ID link of the object in the settings.
This meant that the pointer was just pointing to random memory after
loading a file that had this object set.
The fix makes sure this ID link is handled in `foreach_ID_link`.
I've done this a few times and would have benefited from a utility
function for it, apparently it's done in a few more places too. The
utilities aren't multithreaded for now, it doesn't seem important
and often multithreading happens at a different level of the call
stack anyway.
Pull Request: https://projects.blender.org/blender/blender/pulls/127517
Grease Pencil armature deformation has to use the correct
`vertex_group_names` list from the `Curves` (i.e. drawings) rather than
the names from its parent `GreasePencil` data block.
The ancient armature deformation code used a `defbase` list (`ListBase`
of type `bDeformGroup`) from the object via `BKE_id_defgroup_list_get`.
This function does not have enough information to determine the correct
vertex groups for GPv3, and it's use inside supposedly generic code is
highly questionable.
This patch removes the `defbase` lookup inside
`armature_deform_coords_impl` and instead passes an explicit list of
vertex group names to be used for resolving indices. We already have
context in every place this is called to determine the correct vertex
groups, without having to make assumptions down the line based on just
the object type.
Pull Request: https://projects.blender.org/blender/blender/pulls/127509
As of 2a56403cb0, bevel weight data is stored as a generic
attribute. The bevel modifier is currently hard-coded to use the
`bevel_weight_edge` attribute as the data source for the weights.
This commit adds a string textbox where the user can specify alternate
attributes for the bevel's edge weights.
The string name field is added as a search button which provides a list
of all attributes in the original mesh. This is meant to work similarly
to geometry nodes, so mismatched attribute data types and domains are
automatically converted/interpolated as necessary. Attributes created
by previous modifiers can also be used, but they won't appear in the
search menu.
Co-authored-by: Hans Goudey <hans@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/117366
This introduces the concept of an #AttributeFilter. It's used to tell a geometry
algorithm which attributes it should process/propagate and which can be ignored.
We already had something similar before named
`AnonymousAttributePropagationInfo`. However, as the name implies, this was
specific to anonymous attributes. This had some downsides:
* A lot of code had to be aware of the concept of anonymous attributes even if
it did nothing special with anonymous attributes.
* For non-anonymous attributes we often had a separate `Set<std::string> skip`
parameter. It's not nice to have to pass two kinds of filters around and to
have to construct a `Set<std::string>` in many cases.
`AttributeFilter` solves both of these downsides.
Technically, `AttributeFilter` could also just be a `FunctionRef<bool(StringRef
attribute_name)>`, but that also has some issues:
* The `bool` return value is often ambiguous, i.e. it's not clear if it means
that the attribute should be processed or not. Using an enum works better.
* Passing function refs around and combining them works, but can very easily
lead to dangling references.
* The default value of a `FunctionRef` is "empty", i.e. it can't be called. It's
generally more nice to not have a special case for the default value. Now the
default `AttributeFilter` propagates all attributes without any extra handling
on the call-site.
Pull Request: https://projects.blender.org/blender/blender/pulls/127155
Previously, all errors, warnings and info messages were propagated from the node
that generates it to the top level node group. This is a good default, but may
not always be desirable. For example, someone may build a node group asset that
generates some warning that is irrelevant to the user to the asset. Now, the
asset author can selectively disable propagating warnings from that node.
Each node has a new `Warning Propagation` setting. It controls if warnings from
this node should be propagated to the parent group node. By default, everything
is propagated. One can also choose to propagate nothing, only errors or only
errors and warnings.
Note, this does not affect whether the warning is shown in the node itself, only
if the warning is propagated one level up!
Pull Request: https://projects.blender.org/blender/blender/pulls/126786
Investigation into #126306 showed that the texture tab shown would actually be
for the active image paint brush, but people used it to set up a texture for
the fluid modifier settings anyway. Now properly register the texture user for
the UI, so the texture properties tab will always be displayed when there is a
fluid modifier with a "Flow" fluid type.
Main issue is that fluid modifiers weren't handled by the
`BKE_modifiers_foreach_tex_link()` iterator.
While this could be handled as another special case in
`buttons_texture_modifier_foreach()`, I updated the texture-link iterators to
support texture properties that are not directly stored in the modifier, but in
some nested data. Seems like this should be supported generally. It's enabled
here by passing a pointer-property pair, rather than just a property name.
Pull Request: https://projects.blender.org/blender/blender/pulls/126893
Part of #118145.
Remove some uses of the `SculptSession` array in favor of retrieving
positions as necessary. Because of implicit sharing, avoiding unnecessary
mutable references to data can avoid copies and increased memory usage.
There are still more places to change before sculpt mode recieves that
benefit though.
In 4.2, Alembic points are imported as PointCloud objects instead of as
mesh vertices.
The code inside Mesh Sequence Cache which converts geometry into a
bounding-box mesh when using Render Procedurals needed to be updated
to support PointCloud objects.
Pull Request: https://projects.blender.org/blender/blender/pulls/125846
The crash was caused by attempting to write-back to the original data after it
has been removed (`add_data_block_items_writeback`).
This write-back is already disabled when applying a modifier, however the
corresponding flag was only set when applying modifiers on mesh objects. This
patch fixes this issue with two small changes:
* Rename `MOD_APPLY_TO_BASE_MESH` to `MOD_APPLY_TO_ORIGINAL` to make it more
generic.
* Pass this flag into modifier evaluation for other geometry types besides
meshes in `modifier_apply_obdata`.
Pull Request: https://projects.blender.org/blender/blender/pulls/125761
This removes the legacy Grease Pencil modifiers from the code.
These should have already been inaccessible from the UI and hidden from
the user. The modifiers have been reimplemented for the new GPv3
data structure.
On top of the modifier code, some other related things have been
removed as well:
* Operators related to the legacy modifiers.
* Keymaps for the legacy modifier operators.
* Some bits of code that used modifier functions.
Some code has to be kept, because it is still used:
* The core line art code, which is used by the new line art modifier. It's
moved to `modifiers/lineart`.
* The DNA structs for the legacy modifiers. They are still needed for
conversion.
* A few kernel functions for the modifiers are kept (also for conversion).
Co-authored-by: Lukas Tönne <lukas@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/125102
This reverts commit f3c32a36bc and the two followups.
The commit caused issues with both the operator and the modifier.
The operator could be fixed, for the modifier this needs deeper
investigation (see #124836 for a bit more info on this).
Until a better solution is found it is just better to go back to
previous behavior.
Reintroduces #103562 for now
Pull Request: https://projects.blender.org/blender/blender/pulls/125499
This patch implements all baking operators for LineArt for GPv3.
The old baking operators are renamed with `_legacy_` to
distinguishing both when calling the operator.
Pull Request: https://projects.blender.org/blender/blender/pulls/125079
The fix contains two parts:
1. Grease Pencil v3 now stores stroke `init_time` as a float attribute,
it's not enough precisiton for unix timestamp. Now the time value is
truncated to allow better precision. It's still stored in seconds.
2. The previous logic for calculating stroke gap time of the build
modifier isn't correct, it used to only count two starting times as
gap time. Now it's fixed with correct delta time.
Pull Request: https://projects.blender.org/blender/blender/pulls/124350
This commit moves generated `RNA_blender.h`, `RNA_prototype.h` and
`RNA_blender_cpp.h` headers to become C++ header files.
It also removes the now useless `RNA_EXTERN_C` defines, and just
directly use the `extern` keyword. We do not need anymore `extern "C"`
declarations here.
Pull Request: https://projects.blender.org/blender/blender/pulls/124469
