Use `get_influence_vertex_weights` for thickness modifier. This returns
array of values 0 when group is empty (see `lookup_or_default`).
Function also controls the invert state for vertex group.
Pull Request: https://projects.blender.org/blender/blender/pulls/137455
When a stroke has a gradient fill material that starts with a color with
zero alpha, the tint modifier would behave as if it's not effective at
all, this is caused by referencing source material color only with the
starting color in this case, and since the alpha is zero, the tint is
applied wrongly. Now use average color of start and end color of the
gradient to mix with the tint modifier color.
Note that this isn't technically correct still, since material gradient
is computed in the shader, and tint modifier isn't able to get the
acutal fill color at a given vertex (especially for the radial gradient
case) however the result of this patch looks visually good enough, and
users can always set all alpha to 1 when they feel the color is off.
Pull Request: https://projects.blender.org/blender/blender/pulls/134549
The main goal here is to add `GeoTreeLogger.tree_orig_session_uid`. Previously,
it was always possible to derive this information in `ensure_node_warnings`.
However, with closures that's not possible in general anymore, because the
Evaluate Closure node does not know statically which node tree the closure zone
is from that it evaluates. Therefore, this information has to be logged as well.
This patch initializes `tree_orig_session_uid` the same way it initializes
`parent_node_id`, by scanning the compute context when creating the tree logger.
To make this work properly, some extra contextual data had to be stored in some
compute contexts.
This is just a refactor with no expected functional changes. Node warnings for
closures are still not properly logged, because that requires storing
source-location data in closures, which will be implemented separately.
Pull Request: https://projects.blender.org/blender/blender/pulls/137208
Reading curves from alembic files did not interpolate the curves between
frames, leading to incorrect motion blur. This uses the existing
`use_vertex_interpolation` flag on the MeshSequenceCache to enable the
subframe interpolation.
Pull Request: https://projects.blender.org/blender/blender/pulls/135698
When releasing a mesh from a `GeometrySet` one has to take manual control over
owner-management. In some cases, the geometry set was not the owner of the mesh,
but was just referencing it. This is generally fine in a limited set of
circumstances and can avoid copies. However, when taking ownership of the mesh
in the geometry set, one has to be sure that the geometry set actually has
ownership.
This is similar to what is done in e.g. `modifier_modify_mesh_and_geometry_set`.
Pull Request: https://projects.blender.org/blender/blender/pulls/137150
This fixes most "One Definition Rule" violations inside blender proper
resulting from duplicate structures of the same name. The fixes were
made similar to that of !135491. See also #120444 for how this has come
up in the past.
These were found by using the following compile options:
-flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing
Note: There are still various ODR issues remaining that require
more / different fixes than what was done here.
Pull Request: https://projects.blender.org/blender/blender/pulls/136371
Add a "dumb vector" storage option for custom normals, with the
"custom_normal" attribute. Adjust the mesh normals caching to
provide this attribute if it's available, and add a geometry node to
store custom normals.
## Free Normals
They're called "free" in the sense that they're just direction vectors
in the object's local space, rather than the existing "smooth corner
fan space" storage. They're also "free" in that they make further
normals calculation very inexpensive, since we just use the custom
normals instead. That's a big improvement from the existing custom
normals storage, which usually significantly decreases
viewport performance. For example, in a simple test file just storing
the vertex normals on a UV sphere, using free normals gives 25 times
better playback performance and 10% lower memory usage.
Free normals are adjusted when applying a transformation to the entire
mesh or when realizing instances, but in general they're not updated for
vertex deformations.
## Set Mesh Normal Node
The new geometry node allows storing free custom normals as well as
the existing corner fan space normals. When free normals are chosen,
free normals can be stored on vertices, faces, or face corners. Using
the face corner domain is necessary to bake existing mixed sharp and
smooth edges into the custom normal vectors.
The node also has a mode for storing edge and mesh sharpness, meant
as a "soft" replacement to the "Set Shade Smooth" node that's a bit
more convenient.
## Normal Input Node
The normal node outputs free custom normals mixed to whatever domain is
requested. A "true normal" output that ignores custom normals and
sharpness is added as well.
Across Blender, custom normals are generally accessed via face and
vertex normals, when "true normals" are not requested explicitly.
In many cases that means they are mixed from the face corner domain.
## Future Work
1. There are many places where propagation of free normals could be
improved. They should probably be normalized after mixing, and it
may be useful to not just use 0 vectors for new elements. To keep
the scope of this change smaller, that sort of thing generally isn't
handled here. Searching `CD_NORMAL` gives a hint of where better
propagation could be useful.
2. Free normals are displayed properly in edit mode, but the existing
custom normal editing operators don't work with free normals yet.
This will hopefully be fairly straightforward since custom normals
are usually converted to `float3` for editing anyway. Edit mode
changes aren't included here because they're unnecessary for the
procedural custom normals use cases.
3. Most importers can probably switch to using free normals instead,
or at least provide an option for it. That will give a significant
import performance improvement, and an improvement of Blender's
FPS for imported scenes too.
Pull Request: https://projects.blender.org/blender/blender/pulls/132583
In `lineart_geometry_check_visible` it could recieve a valid mesh
without any vertices, this causes `bounds` below to be invalid.
Now return early if encountered such situation.
Pull Request: https://projects.blender.org/blender/blender/pulls/136819
This implements bundles and closures which are described in more detail in this
blog post: https://code.blender.org/2024/11/geometry-nodes-workshop-october-2024/
tl;dr:
* Bundles are containers that allow storing multiple socket values in a single
value. Each value in the bundle is identified by a name. Bundles can be
nested.
* Closures are functions that are created with the Closure Zone and can be
evaluated with the Evaluate Closure node.
To use the patch, the `Bundle and Closure Nodes` experimental feature has to be
enabled. This is necessary, because these features are not fully done yet and
still need iterations to improve the workflow before they can be officially
released. These iterations are easier to do in `main` than in a separate branch
though. That's because this patch is quite large and somewhat prone to merge
conflicts. Also other work we want to do, depends on this.
This adds the following new nodes:
* Combine Bundle: can pack multiple values into one.
* Separate Bundle: extracts values from a bundle.
* Closure Zone: outputs a closure zone for use in the `Evaluate Closure` node.
* Evaluate Closure: evaluates the passed in closure.
Things that will be added soon after this lands:
* Fields in bundles and closures. The way this is done changes with #134811, so
I rather implement this once both are in `main`.
* UI features for keeping sockets in sync (right now there are warnings only).
One bigger issue is the limited support for lazyness. For example, all inputs of
a Combine Bundle node will be evaluated, even if they are not all needed. The
same is true for all captured values of a closure. This is a deeper limitation
that needs to be resolved at some point. This will likely be done after an
initial version of this patch is done.
Pull Request: https://projects.blender.org/blender/blender/pulls/128340
This was an issue previously not noticed. There were two bugs:
- When an out of range index was somehow detected, line art discards the
entire stroke after the point, which causes remaining point positions
to be invalid. In fact the index should never go out of range unless
total points in the scene exceeds `size_t`.
- Line art point index is global, not local to objects, previously the
"object starting index" was not subtracted from the final point index
when transferring weights, this will lead to incorrect weight being
transferred/discarded.
Now both problems have been properly taken care of.
Pull Request: https://projects.blender.org/blender/blender/pulls/136869
Part of incoming refactors in interface layout c++ code, this enables
forward declaring this enum type. Enum is renamed as `EmbossType` and
moved to `blender::ui` namespace. No user visible changes expected.
Pull Request: https://projects.blender.org/blender/blender/pulls/136725
Caused by 6c05859b12
OpenVDB does not handle transformations with determinants smaller than
3e-15 and throws an `ArithmeticError` when a `Transform` is created
with invalid values.
To avoid abrupt crashes on the user side, this commit catches the error
and displays a warning message.
Pull Request: https://projects.blender.org/blender/blender/pulls/136690
This adds a new Camera Info node to Geometry Nodes. It provides information
about the passed in camera like its projection matrix and focus distance.
This can be used for camera culling which was must more complex before.
It also allows building other view-dependent effects.
Pull Request: https://projects.blender.org/blender/blender/pulls/135311
I'm moving this for two (related) reasons:
* It depends a lot on the specifics of `Camera` and `Object` data-blocks.
* It links `Object::object_to_world()` which is not an inline function and thus
easily leads to linker errors. It mostly seems like luck that this is not
breaking our build due to early dead code elimination when linking binaries
which use the blenlib static library such as `msgfmt`.
I found this while working on a compilation tool which would not be as lucky and
has a linker error because of the dependence on `Object::object_to_world`.
Pull Request: https://projects.blender.org/blender/blender/pulls/136547
Resolves#136183
To avoid quadratic worst case runtime when gathering values from
the modifier properties, build a temporary VectorSet of the modifier's
IDProperties. In the file from #136183, this change improves playback
performance by 1.4x for me, from 50 to 70ms.
Ideally IDProperty groups would have constant time lookup on their
own, but that's a much larger change, and this smaller change for just
Geometry Nodes is not so invasive.
Pull Request: https://projects.blender.org/blender/blender/pulls/136463
The issue was that using `DEG_get_original_id` returned the same
evaluated ID, because the `GreasePencil` in the geometry set doesn't
have the original ID pointer set.
Instead, use the original ID pointer stored in the
`GreasePencilEditHints` (which is better anyway).
Also resolves#136307.
Pull Request: https://projects.blender.org/blender/blender/pulls/136455
Use the mesh wrapper mechanism from GPU subdivision to get the base mesh.
This can significantly reduce memory usage and render setup time if the
level was not manually set to zero.
Pull Request: https://projects.blender.org/blender/blender/pulls/135895
This makes it possible for Cycles adaptive subdivision to always get the
base mesh, and will enable the same for other external renderers as well.
Metal and Vulkan now support GPU subdivision, so by default the wrapper
will be used most of the time. However this can be disabled in the
preferencesas well. For those cases, the subdiv wrapper is still created
but cached immediately as part of modifier evaluation. This way it can
take advantage of multithreaded depsgraph evaluation, which is not
guaranteed for other cases.
The draw code access the object data through a wrapper that will return
either the base mesh or subdivided mesh depending if GPU subdivision is
enabled or not. Previously Object.data would have the appropriate mesh
already, but now that Cycles may do adaptive subdivision while GPU
subdivision is disabled this is no longer possible.
Pull Request: https://projects.blender.org/blender/blender/pulls/135895
It seems that this was 'fine', as non-trivial data in `BVHTreeFromMesh`
appear to be 'safe' when simply zero-initialized instead of being
properly constructed.
Note that this 'calloced' data was already 'MEM_deleted', this is
currently considered as a valid use-case unfortunately, otherwise the
issue would have been detected earlier.
Directly use 'copy' `MEM_new` code instead.
Pull Request: https://projects.blender.org/blender/blender/pulls/135862
The main issue of 'type-less' standard C allocations is that there is no check on
allocated type possible.
This is a serious source of annoyance (and crashes) when making some
low-level structs non-trivial, as tracking down all usages of these
structs in higher-level other structs and their allocation is... really
painful.
MEM_[cm]allocN<T> templates on the other hand do check that the
given type is trivial, at build time (static assert), which makes such issue...
trivial to catch.
NOTE: New code should strive to use MEM_new (i.e. allocation and
construction) as much as possible, even for trivial PoD types.
Grease Pencil dash modifier wasn't merging strokes from strokes that are
unfiltered, resulted in only filtered strokes being shown afterwards.
This fix joins generated strokes with what's left behind so there's no
stroke missing.
Pull Request: https://projects.blender.org/blender/blender/pulls/135705
Grease Pencil dash modifier wasn't merging strokes from strokes that are
unfiltered, resulted in only filtered strokes being shown afterwards.
This fix joins generated strokes with what's left behind so there's no
stroke missing.
Pull Request: https://projects.blender.org/blender/blender/pulls/135705
When using Alembic procedurals, the Mesh Sequence Cache attempts to
replace the original geometry with a plain old cube. However, it never
frees this new cube geometry. Transfer ownership to the underlying
GeometrySet instead.
Investigating the scenario also showed that the `~AlembicProcedural`
dtor was removing an item from the `nodes` vector while iterating over
it, which triggers debug asserts on at least MSVC. I believe the removal
is unnecessary since this is the dtor and ASAN appears clean now.
Pull Request: https://projects.blender.org/blender/blender/pulls/134085
The general idea is to keep the 'old', C-style MEM_callocN signature, and slowly
replace most of its usages with the new, C++-style type-safer template version.
* `MEM_cnew<T>` allocation version is renamed to `MEM_callocN<T>`.
* `MEM_cnew_array<T>` allocation version is renamed to `MEM_calloc_arrayN<T>`.
* `MEM_cnew<T>` duplicate version is renamed to `MEM_dupallocN<T>`.
Similar templates type-safe version of `MEM_mallocN` will be added soon
as well.
Following discussions in !134452.
NOTE: For now static type checking in `MEM_callocN` and related are slightly
different for Windows MSVC. This compiler seems to consider structs using the
`DNA_DEFINE_CXX_METHODS` macro as non-trivial (likely because their default
copy constructors are deleted). So using checks on trivially
constructible/destructible instead on this compiler/system.
Pull Request: https://projects.blender.org/blender/blender/pulls/134771
Resolve naming collisions for structs which could cause the wrong size
to be used allocating the `LaplacianSystem` when calculating mesh
weights from an armature.
Ref !135491
Adds the option to create a boolean socket that can be used as a panel toggle.
This allows creating simpler and more compact node group UIs when a panel
can be "disabled".
The toggle input is a normal input socket that is just drawn a bit differently in
the UI. Whether a boolean is a toggle input or not does not affect evaluation.
Also see #133936 for guides on how to add and remove panel toggles.
Pull Request: https://projects.blender.org/blender/blender/pulls/133936
Same was true for SimpleDeform.
Invert vertex group influence should only have an effect if there is a
group specified.
Shrinkwrap always uses a weight (gets weights via
`BKE_defvert_array_find_weight_safe` -- which gets full weight for no
group specified, rightfully so), if this gets inverted, we get no
influence at all.
Now move the inverting of the weights to `BKE_defvert_array_find_weight_safe`,
adjust the other callers accordingly (Bevel also does not need to check for a valid
vertexgroup beforehand).
Pull Request: https://projects.blender.org/blender/blender/pulls/121625
The fix 8af27ce27e assumed that
the `edit_hints->positions()` were always empty and that we would always
fallback to using the evalauted positions instead.
But if the edit hints are populated, this fails. In this case, we populate the
positions in `remember_deformed_positions_if_necessary`.
The fix makes sure that we write to the `edit_hint` positions if they are
populated.
Pull Request: https://projects.blender.org/blender/blender/pulls/135033
Previously we generally expected CustomData layers to have implicit
sharing info, but we didn't require it. This PR clarifies that we do
require layers with non-null data to have implicit sharing info. This
generally makes code simpler because we don't have to have a separate
code path for non-shared layers. For example, it makes the "totelem"
arguments for layer freeing functions unnecessary, since shared data
knows how to free itself. Those arguments are removed in this PR.
Pull Request: https://projects.blender.org/blender/blender/pulls/134578
And replace nullptr arguments for tooltips in UI button
creation functions with std::nullopt. Though the distinction
between "no tooltip" and "empty tooltip" doesn't seem to exist,
it seems safer to keep the distinction since it existed with null before.
