The node level was an indication of how deep the node was in the tree.
It was only used for detecting link cycles. Now that the node topology
cache from 25e307d725 exists, this calculation can be removed
completely.
The level calculation was quadratic and very slow on larger node trees.
In the mouse house file with a few thousand nodes, it took 23ms on
every single update. Another benefit is storing slightly less runtime
data, though this was only 2 bytes per node.
Differential Revision: https://developer.blender.org/D16566
Instead of generating a dependency sorted node list whenever evaluating
texture or EEVEE/viewport shader nodes, use the existing sorted array
from the topology cache. This may be more efficient because the
algorithm isn't quadratic. It's also the second-to-last place to
use `node.runtime->level`, which can be removed soon.
Differential Revision: https://developer.blender.org/D16565
* This patch just moves runtime data to the runtime struct to cleanup
the dna struct. Arguably, some of this data should not even be there
because it's very use case specific. This can be cleaned up separately.
* `miniwidth` was removed completely, because it was not used anywhere.
The corresponding rna property `width_hidden` is kept to avoid
script breakage, but does not do anything (e.g. node wrangler sets it).
* Since rna is in C, some helper functions where added to access the
C++ runtime data from rna.
* This size of `bNode` decreases from 432 to 368 bytes.
This allows for optimizations because one does not have to iterate
over all nodes anymore to find all nodes within a frame.
Differential Revision: https://developer.blender.org/D16106
This commit adds a new "Image Info" node to retrieve various
information from an image like its width, height, and whether
it has an alpha channel. It is also possible to retrieve the FPS
and frame count of video files.
Differential Revision: https://developer.blender.org/D15042
This was caused by rBc39eb09ae587e1d9. The optimization broke the case
when the socket is not in the provided node tree. Now there are two separate
functions, one that always does the slow check to see of the socket is really
in the node tree and a potentially much faster version when we are sure
that the socket is in the tree.
Use the node topology cache and avoid modifying the node tree
in a non-threadsafe way to improve the predictability of using
the helper function. Replaces the implementation from
e0d4047136.
**Problem**
Currently multiple input sockets are created when a new node group is
made from selected nodes. Some of these are linked from the same source.
It is not convenient to sort out and remove multiple input sockets that
represent the same input. These inputs usually have meaningless names
like 'value', 'x', etc.
**Solution**
Create common input sockets for each link starting from the same input.
Move links inside the new group's node tree and reroute it to connect
the common input socket to the original nodes. This is done by building
up a mapping between the incoming link sources to the input interfaces
created for them. The input interfaces are reused by the rest of the
links having the same source.
This patch also changes the way the input sockets get their names.
Output socket names of the group nodes usually are specific and are
given consciously. Use the output socket names from group nodes instead
of the inputs where the links point to.
Differential Revision: https://developer.blender.org/D15802
Rename the node to "Offset Point in Curve"
Since this was committed, more mesh and curve topology nodes have been
committed with a different naming scheme (482d431bb6). Change
the name of this node to match "Offset Corner in Face". Because the
node was only added recently, it's a full rename, including the ID,
so forward compatibility is broken.
This node allows for curves to have their evaluated normal mode changed
between MINIMUM_TWIST and Z_UP. A selection input allows for choosing
which spline in the curves object will be affected.
Differential Revision: D16118
This node allows sampling an attribute on a mesh surface based
on a UV coordinate. Internally, this has to do a "reverse uv lookup",
i.e. the node has to find the polygon that corresponds to the uv
coordinate. Therefore, the uv map of the mesh should not have
overlapping faces.
Differential Revision: https://developer.blender.org/D15440
This patch contains an initial set of nodes to access basic
mesh topology information, as explored in T100020.
The nodes allow six direct topology mappings for meshes:
- **Corner -> Face** The face a corner is in, the index in the face
- **Vertex -> Edge** Choose an edge attached to the vertex
- **Vertex -> Corner** Choose a corner attached to the vertex
- **Corner -> Edge** The next and previous edge at each face corner
- **Corner -> Vertex** The vertex associated with a corner
- **Corner -> Corner** Offset a corner index within a face
And two new topology mappings for curves:
- **Curve -> Points** Choose a point within a curve
- **Point -> Curve** The curve a point is in, the index in the curve
The idea is that some of the 16 possible mesh mappings are more
important, and that this is a useful set of nodes to start exploring
this area. For mappings with an arbitrary number of connections, we
must sort them and use an index to choose a single element, because
geometry nodes does not support list fields. Note that the sort
index has repeating behavior as it goes over the "Total" number of
connections, and negative sort indices choose from the end.
Currently which of the "start" elements is used is determined by the
field context, so the "Field at Index" and "Interpolate Domain" nodes
will be quite important. Also, currently the "Sort Index" inputs are
clamped to the number of connections.
One important feature that isn't implemented here is using the winding
order for the output elements. This can be a separate mode for some
of these nodes. It will be optional because of the performance impact.
There are several todos for separate commits after this:
- Rename "Control Point Neighbors" to be consistent with this naming
- Version away the "Vertex Neighbors" node which is fully redundant now
- Implement a special case for when no weights are used for performance
- De-duplicating some of the sorting logic between the nodes
- Improve performance and memory use of topology mappings
- Look into caching some of the mappings on meshes
Differential Revision: https://developer.blender.org/D16029
This node allows access to the indices of neighboring control points
within a curve via an offset. This includes taking into consideration
curves that are cyclic.
Differential Revision: D13373
This patch replaces the existing transfer attribute node with three
nodes, "Sample Nearest Surface", "Sample Index", and "Sample Nearest".
This follows the design in T100010, allowing for new nodes like UV
sampling in the future. There is versioning so the new nodes replace
the old ones and are relinked as necessary.
The "Sample Nearest Surface" node is meant for the more complex
sampling algorithms that only work on meshes and interpolate
values inside of faces.
The new "Sample Index" just retrieves attributes from a geometry at
specific indices. It doesn't have implicit behavior like the old
transfer mode, which should make it more predictable. In order to not
change the behavior from existing files, the node has a has a "Clamp",
which is off by default for consistency with the "Field at Index" node.
The "Sample Nearest" node returns the index of the nearest element
on a geometry. It can be combined with the "Sample Index" node for
the same functionality as the old transfer node. This node can support
curves in the future.
Backwards compatibility is handled by versioning, but old versions can
not understand these nodes. The warning from 680fa8a523 should make
this explicit in 3.3 and earlier.
Differential Revision: https://developer.blender.org/D15909
From the nodes' description: "Retrieve the object that contains
the geometry nodes modifier currently being executed". This was
discussed in the most recent geometry nodes module meeting.
Because the node allows you to retrieve the position of the modifier
object, it has to add a depsgraph relation to object transform.
Expect that modifiers will be reevaluated when moving the object.
In the future, better static analysis of node trees could make this
check smarter.
Differential Revision: https://developer.blender.org/D16037
This commit adds a node to distribute points inside of volume grids.
The "Random" mode usese OpenVDB's "point scatter" implementation, and
there is also a "Grid" mode for uniform distributions. Both methods
operate on all of the float grids in the volume, using every voxel with
a value higher than the threshold. The random method is not stable as
the input volume deforms.
Based on a patch by Angus Stanton (@abstanton), which was based on a
patch by Kenzie (@kenziemac130).
Differential Revision: https://developer.blender.org/D15375
With the recent addition of the UV unwrapping node, there is a need to
be able to create seams easily. This node does that by outputting a
selection of the boundaries between different input face sets. In the
context of UV mapping, one inputs the "patches" you want, and the node
gives you the seams needed to make those patches.
Differential Revision: https://developer.blender.org/D15423
This patch implements the Scale node for the realtime compositor.
Differential Revision: https://developer.blender.org/D15758
Reviewed By: Clement Foucault
Add a dedicated `owner_id` pointer to ID types that can be embedded
(Collections and NodeTrees), and modify slightly come code to make
handling those more safe and consistent.
This implements first part of T69169.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D15838
The previous implementation iterated over all links multiple times
recursively. Instead, use the node tree topology cache, only iterate
over all links once, and use a stack to propagate the mute upsteam
and downstream.
This patch is a response to T92588 and is implemented
as a Function/Shader node.
This node has support for Float, Vector and Color data types.
For Vector it supports uniform and non-uniform mixing.
For Color it now has the option to remove factor clamping.
It replaces the Mix RGB for Shader and Geometry node trees.
As discussed in T96219, this patch converts existing nodes
in .blend files. The old node is still available in the
Python API but hidden from the menus.
Reviewed By: HooglyBoogly, JacquesLucke, simonthommes, brecht
Maniphest Tasks: T92588
Differential Revision: https://developer.blender.org/D13749
This patch adds the core realtime compositor evaluator as well as a
compositor draw engine powered by the evaluator that operates in the
viewport. The realtime compositor is a new GPU accelerated compositor
that will be used to power the viewport compositor imminently as well as
the existing compositor in the future.
This patch only adds the evaluator and engine as an experimental
feature, the implementation of the nodes themselves will be committed
separately.
See T99210.
Differential Revision: https://developer.blender.org/D15206
Reviewed By: Clement Foucault
There was already a utility to retrieve the correct node group idname
from the context, `node_group_idname`, but often it's clearer to
use lower-level arguments, or the context isn't accessible.
Storing the group idname in the tree type makes it accessible
without rewriting it elsewhere.
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.
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
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
This is the start of a geometry node to do edge, vertex, and face
bevels.
It doesn't yet do anything but analyze the "Vertex cap" around
selected vertices for vertex bevel.
This commit adds new Unwrap and Pack Islands nodes, with equivalent
functionality to the existing Unwrap and Pack Islands operators. The
Unwrap node uses generic boolean attributes to determine seams instead
of looking at the seam flags in the mesh geometry.
Unlike the Unwrap operator, the Unwrap node doesn't perform aspect
ratio correction, because this is trivial for the user to implement
with a Vector Math node if it is desired.
The Unwrap node implicitly performs a Pack Islands operation upon
completion, because the results may not be generally useful otherwise.
This matches the behaviour of the Unwrap operator.
The nodes use the existing Vector socket type, and do not introduce a
new 2D Vector type (see T92765).
Differential Revision: https://developer.blender.org/D14389
This adds a Mesh To Volume Node T86838 based on the existing modifier.
The mesh to volume conversion is implemented in the geometry module,
and shared between the node and the modifier.
Currently the node outputs a grid with the name "density". This may
change in the future depending on the decisions made in T91668.
The original patch was by Kris (@Metricity), further implementation
by Geramy Loveless (@GeramyLoveless), then finished by Erik Abrahamsson
(@erik85).
Differential Revision: https://developer.blender.org/D10895
As described in T98943, this commit adds a node that can
evaluate a field on a separate domain in a larger field context.
This is potentially useful in many cases, to avoid relying on
a separate capture attribute node, which can make it easier
to build reusable fields that don't need geometry inputs.
Internally, the node just evaluates the input field in the larger
field context and then uses the generic domain interpolation,
so the code is simple. One future optimization might be using
the input selection to only evaluate part of the input field, but
then the selection has to be interpolated as well, and that might
not always be worth it.
Differential Revision: https://developer.blender.org/D15289
This node takes a point count,a vector field, and float field and creates
a pointcloud with n points at the positions indicated in the vector
field with the radii specified in the float field.The node is placed in
the "Point" menu.
Differential Revision: https://developer.blender.org/D13920
Maniphest Task: https://developer.blender.org/T93044
This commit adds a Volume Cube primitive node. It outputs a volume that
contains a single "density" float grid. The density per voxel can be
controlled with a field that depends on the voxel position (using the
existing Position node). Other field inputs are not supported.
The density field is evaluated on every voxel.
Possible future improvements are listed in D15198.
Differential Revision: https://developer.blender.org/D15198
A field input node for the scale of each top-level instance transform.
The scale can be set with the "Scale Instances" node, but previously
could not be retrieved.
Differential Revision: https://developer.blender.org/D15132
A field input node for the rotation of each top-level instance transform.
The rotation can be set with the "Rotate Instances" node, but previously
could not be retrieved.
Differential Revision: https://developer.blender.org/D15131
Inspired by D12936 and D12929, this patch adds general purpose
"Combine Color" and "Separate Color" nodes to Geometry, Compositor,
Shader and Texture nodes.
- Within Geometry Nodes, it replaces the existing "Combine RGB" and
"Separate RGB" nodes.
- Within Compositor Nodes, it replaces the existing
"Combine RGBA/HSVA/YCbCrA/YUVA" and "Separate RGBA/HSVA/YCbCrA/YUVA"
nodes.
- Within Texture Nodes, it replaces the existing "Combine RGBA" and
"Separate RGBA" nodes.
- Within Shader Nodes, it replaces the existing "Combine RGB/HSV" and
"Separate RGB/HSV" nodes.
Python addons have not been updated to the new nodes yet.
**New shader code**
In node_color.h, color.h and gpu_shader_material_color_util.glsl,
missing methods hsl_to_rgb and rgb_to_hsl are added by directly
converting existing C code. They always produce the same result.
**Old code**
As requested by T96219, old nodes still exist but are not displayed in
the add menu. This means Python scripts can still create them as usual.
Otherwise, versioning replaces the old nodes with the new nodes when
opening .blend files.
Differential Revision: https://developer.blender.org/D14034
- Missing star prefix.
- Unnecessary indentation.
- Blank line after dot-points
(otherwise doxygen merges with the previous dot-point).
- Use back-slash for doxygen commands.
- Correct spelling.
This patch adds color attributes to TexPaintSlot. This allows an easier selection
when painting color attributes.
Previously when selecting a paint tool the user had to start a stroke, before the
UI reflected the correct TexPaintSlot. Now when switching the slot the active
tool is checked and immediate the UI is drawn correctly.
In the future the canvas selector will also be used to select an image or image texture node
to paint on. Basic implementation has already been done inside this patch.
A limitation of this patch is that is isn't possible anymore to rename images directly from
the selection panel. This is currently allowed in master. But as CustomDataLayers
aren't ID fields and not owned by the material supporting this wouldn't be easy.
{F12953989}
In the future we should update the create slot operator to also include color attributes.
Sources could also be extended to use other areas of the object that use image textures
(particles, geom nodes, etc... ).
Reviewed By: brecht
Maniphest Tasks: T96709
Differential Revision: https://developer.blender.org/D14455
This commit removes the implementations of legacy nodes,
their type definitions, and related code that becomes unused.
Now that we have two releases that included the legacy nodes,
there is not much reason to include them still. Removing the
code means refactoring will be easier, and old code doesn't
have to be tested and maintained.
After this commit, the legacy nodes will be undefined in the UI,
so 3.0 or 3.1 should be used to convert files to the fields system.
The net change is 12184 lines removed!
The tooltip for legacy nodes mentioned that we would remove
them before 4.0, which was purposefully a bit vague to allow
us this flexibility. In a poll in a devtalk post showed that the
majority of people were okay with removing the nodes.
https://devtalk.blender.org/t/geometry-nodes-backward-compatibility-poll/20199
Differential Revision: https://developer.blender.org/D14353
