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Mistake in c8ae1fce6024556b72c.
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Also add an error message for when the node is used on non-curves
objects, since there's nothing in the UI to show why it doesn't work
except for that. And also use quotes when referring to attribute names.
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Found while investigating why crazy-space editing didn't work in T100026.
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This name doesn't require understanding of fields, and
is phrased as an action which is consistent with other nodes.
Discussed in the latest geometry nodes sub-module meeting.
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This adds three new nodes:
* `Shortest Edge Paths`: Actually finds the shortest paths.
* `Edge Paths to Curves`: Converts the paths to separate curves.
This may generate a quadratic amount of data, making it slow
for large meshes.
* `Edge Paths to Selection`: Generates an edge selection that
contains all edges that are part of a path. This can be used
with the Separate Geometry node to only keep the edges that
are part of a path. For large meshes, this approach can be
much faster than the `Edge Paths to Curves` node, because
less data is created.
Differential Revision: https://developer.blender.org/D15274
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It was never added for the field on domain and field at index nodes.
They need special handling because they have many what should be
a multi-type socket declaration.
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Previously there was a special extraction process for "vertex colors"
that copied the color data to the GPU with a special format. Instead,
this patch replaces this with use of the generic attribute extraction.
This reduces the number of code paths, allowing easier optimization
in the future.
To make it possible to use the generic extraction system for attributes
but also assign aliases for use by shaders, some changes are necessary.
First, the GPU material attribute can now store whether it actually refers
to the default color attribute, rather than a specific name. This replaces
the hack to use `CD_MCOL` in the color attribute shader node. Second,
the extraction code checks the names against the default and active
names and assigns aliases if the request corresponds to a special active
attribute. Finally, support for byte color attributes was added to the
generic attribute extraction.
Differential Revision: https://developer.blender.org/D15205
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Changing the value doesn't accomplish anything, since the retrieved
value would be the same for every index then. So it's best to hide it
to make the node clearer.
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`parallel_invoke` allows executing functions on separate threads.
However, creating tasks in tbb has a measurable amount of overhead.
Therefore, it can be benefitial to disable parallelization when
the amount of work done per function is small.
See D15539 for some benchmark results.
Differential Revision: https://developer.blender.org/D15539
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Use an imperfect solution, since this code will be replaced soon anyway.
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This commit adds tooltips to the geometry nodes add menu.
Differential Revision: https://developer.blender.org/D15414
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In a test producing 10 million vertices I observed a 3.6x improvement,
from 470ms to 130ms. The largest improvement comes from calculating
each mesh array on a separate thread. Besides that, the larger changes
come from splitting the filling of corner and face arrays, and
precalculating sines and cosines for each ring.
Using `parallel_invoke` does gives some overhead. On a small 32x16
input, the time went up from 51us to 74us. It could be disabled
for small outputs in the future. The reasoning for this parallelization
method instead of more standard data-size-based parallelism is that the
latter wouldn't be helpful except for very high resolution.
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Also rearrange some lines to simplify logic.
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Since fd5e5dac8946b13599, the node would remove the attribute before
adding it again, which lost the vertex group status of an attribute,
meaning they were written as arbitrary attributes.
Now, the node first tries to write to attributes with the same domain
and data-type, which covers the vertex group case. Then it falls back
to removing the attribute and adding it again. Even that can fail
though, so I added an error message to make that a bit clearer.
Differential Revision: https://developer.blender.org/D15514
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Use the newer more generic sampling and interpolation functions
developed recently (ab444a80a280) instead of the `CurveEval` type.
Functions are split up a bit more internally, to allow a separate mode
for supplying the curve index directly in the future (T92474).
In one basic test, the performance seems mostly unchanged from 3.1.
Differential Revision: https://developer.blender.org/D14621
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Previously, curves sculpt tools only worked on original data. This was
very limiting, because one could effectively only sculpt the curves when
all procedural effects were turned off. This patch adds support for curves
sculpting while looking the result of procedural effects (like deformation
based on the surface mesh). This functionality is also known as "crazy space"
support in Blender.
For more details see D15407.
Differential Revision: https://developer.blender.org/D15407
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All callers passed `false` for this parameter, making it more confusing
than useful. If this functionality is needed again in the future, a separate
function should be added.
Differential Revision: https://developer.blender.org/D15401
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Differential Revision: https://developer.blender.org/D15445
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Remove the boilerplate of using a local geometry component just to use
the attribute API that was necessary before b876ce2a4a4638142439.
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This commit ports the fillet curves node to the new curves data-block,
and moves the fillet node implementation to the geometry module to help
separate the implementation from the node.
The changes are similar to the subdivide node or resample node. I've
resused common utilities where it makes sense, though some things like
the iteration over attributes can be generalized further. The node
is now multi-threaded per-curve and inside each curve, and some buffers
are reused per curve to avoid many allocations.
The code is more explicit now, and though there is more boilerplate to
pass around many spans, the more complex logic should be more readable.
Differential Revision: https://developer.blender.org/D15346
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Testing if components or virtual arrays are null in the same line they
are retrieved can make this boilerplate code a bit easier to read.
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In the future, `materialize_compressed_to_uninitialized_threaded`
could be moved somewhere else and reused.
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Similar to e9f82d3dc7eebadcc52, but for point clouds instead.
Differential Revision: https://developer.blender.org/D15487
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Previously, things like materials, symmetry, and selection options
stored on `Curves` weren't copied to the result in nodes like the
subdivide and resample nodes. Now they are, which fixes some
unexpected behavior and allows visualization of the sculpt mode
selection.
In the realize instances and join nodes the behavior is the same as
for meshes, the parameters are taken from the first (top) input.
I also refactored some functions to return a `CurvesGeometry` by-value,
which makes it the responsibility of the node to copy the parameters.
That should make the algorithms more reusable in other situations.
Differential Revision: https://developer.blender.org/D15408
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Was accidental regression in rBed9b21098dd27bf9364397357f89b4c2648f40c2
Remove the input slider's PROP_FACTOR subtype in favor of the default to
align with other IOR sliders. This provides much better control when
dragging the value with the mouse.
Differential Revision: https://developer.blender.org/D15477
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Use const pointers to ImageSaveOptions and ImageFormatData for API
parameters where appropriate.
Differential Revision: https://developer.blender.org/D15400
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The Difference Matte and RGB To BW nodes have a wrong output type. They
should be floats but are of type color.
This is a regression that was introduced during the migration to the
socket builder API in D13266.
Reviewed By: Blendify, fclem
Differential Revision: https://developer.blender.org/D15232
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Fundamental issue is that the attribute api returns none, because
the custom data api returns null for a layer when the size of 0.
This should be improved separately.
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To avoid Cycles not showing any hair by default, and to avoid very slow render
due to many overlaps with the previous 1 meter default in the node.
Fixes T97584, T99319
Differential Revision: https://developer.blender.org/D15405
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Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is
accessible from RNA and C code. The second is implemented with `GeometryComponent`
and is only accessible in C++ code. The second is widely used, but only being
accessible through the `GeometrySet` API makes it awkward to use, and even impossible
for types that don't correspond directly to a geometry component like `CurvesGeometry`.
This patch adds a new attribute API, designed to replace the `GeometryComponent`
attribute API now, and to eventually replace or be the basis of the other one.
The basic idea is that there is an `AttributeAccessor` class that allows code to
interact with a set of attributes owned by some geometry. The accessor itself has
no ownership. `AttributeAccessor` is a simple type that can be passed around by
value. That makes it easy to return it from functions and to store it in containers.
For const-correctness, there is also a `MutableAttributeAccessor` that allows
changing individual and can add or remove attributes.
Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer
to the owner of the attribute data. The second is a pointer to a struct with
function pointers, that is similar to a virtual function table. The functions
know how to access attributes on the owner.
The actual attribute access for geometries is still implemented with the `AttributeProvider`
pattern, which makes it easy to support different sources of attributes on a
geometry and simplifies dealing with built-in attributes.
There are different ways to get an attribute accessor for a geometry:
* `GeometryComponent.attributes()`
* `CurvesGeometry.attributes()`
* `bke::mesh_attributes(const Mesh &)`
* `bke::pointcloud_attributes(const PointCloud &)`
All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`.
Differential Revision: https://developer.blender.org/D15280
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Curves that are attached to a surface can now follow the surface when
it is modified using shape keys or modifiers (but not when the original
surface is deformed in edit or sculpt mode).
The surface is allowed to be changed in any way that keeps uv maps
intact. So deformation is allowed, but also some topology changes like
subdivision.
The following features are added:
* A new `Deform Curves on Surface` node, which deforms curves with
attachment information based on the surface object and uv map set
in the properties panel.
* A new `Add Rest Position` checkbox in the shape keys panel. When checked,
a new `rest_position` vector attribute is added to the mesh before shape
keys and modifiers are applied. This is necessary to support proper
deformation of the curves, but can also be used for other purposes.
* The `Add > Curve > Empty Hair` operator now sets up a simple geometry
nodes setup that deforms the hair. It also makes sure that the rest
position attribute is added to the surface.
* A new `Object (Attach Curves to Surface)` operator in the `Set Parent To`
(ctrl+P) menu, which attaches existing curves to the surface and sets the
surface object as parent.
Limitations:
* Sculpting the procedurally deformed curves will be implemented separately.
* The `Deform Curves on Surface` node is not generic and can only be used
for one specific purpose currently. We plan to generalize this more in the
future by adding support by exposing more inputs and/or by turning it into
a node group.
Differential Revision: https://developer.blender.org/D14864
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Extends current functionality which was only filling in
the active movie clip. Now we also pre-fill tracking object
name, as well as (plane)track name.
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The tooltips added for shader nodes in D15309 are very helpful already.
This commit makes a few tweaks to make them more consistent, concise,
and includes some fixes. Note that this might move some descriptions
further away from the wording in the manual.
* Make wording more concise
* Start fewer new sentences
* Use "For Example" slightly less
* Avoid repeating the node's name unnecessarily
* Spelling/grammar fixes
* Don't capitalize some words
* Use consistent verb conjugation
* Use ASCII characters/more common quote symbols
* Corrections to information
* Plural/singular corrections
* "smoke domains" -> "volume grids"
* Fix tooltip for separate and combine color nodes
* Refer to color sockets as colors rather than "images"
* Avoid "advice" in a few places, which should be left for the manual
* Remove information for sockets and could be in their tooltips
* Avoid referring to the locations of a property in the UI
* Avoid manual newlines (mostly reserve for "Note:")
* Leave UI code in control of wrapping, which is more consistent
* Add some information
* That the UV map and color attribute nodes use a default
* That Voronoi is "based on the distance to random points"
* Add "(Deprecated)" to old color combine and separate nodes
Differential Revision: https://developer.blender.org/D15381
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Pre-fills movie clip from the scene to the following nodes:
- Keying Screen
- Plane Track Deform
- Track Position
The rest of tracking related nodes were already doing so.
Differential Revision: https://developer.blender.org/D15377
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When committing D14389 I assumed that the output arrays didn't need
to be initialized, but the UV parameterizer uses the intial values of UVs.
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