This flag is only used a few small cases, so instead
of setting the flag for every node only set the
required flag for the nodes that require it.
Mostly the flag is used to set `ntype.flag = NODE_PREVIEW`
For nodes that should have previews by default which
is only some compositor nodes and some texture nodes.
The frame node also sets the `NODE_BACKGROUND` flag.
All other nodes were setting a flag of 0 which has no purpose.
Reviewed By: JacquesLucke
Differential Revision: https://developer.blender.org/D13699
Calculates the angle in radians between two faces that meet at an edge.
0 to PI in either direction with flat being 0 and folded over on itself PI.
If there are not 2 faces on the edge, the angle will be 0.
For valid edges, the angle is the same as the 'edge angle' overlay.
For the Face and Point domain, the node uses simple interpolation to calculate a value.
Differential Revision: https://developer.blender.org/D13366
This function node creates a running total of a given Vector, Float, or
Int field.
Inputs:
- Value: The field to be accumulated
- Group Index: The values of this input are used to aggregate the input
into separate 'bins', creating multiple accumulations.
Outputs:
- Leading and Trailing: Returns the running totals starting
at either the first value of each accumulations or 0 respectively.
- Total: Returns the total accumulation at all positions of the field.
There's currently plenty of duplicate work happening when multiple outputs
are used that could be optimized by a future refactor to field inputs.
Differential Revision: https://developer.blender.org/D12743
`SOCK_IN_USE` is now set in `update_socket_used_tags` in
`node_tree_update.cc` when a node tree is changed.
It doesn't need to run every single redraw. Removing this
results in a small speedup of 0.4 ms when drawing a tree
with about 4000 nodes (from about 70 ms total).
Differential Revision: https://developer.blender.org/D13645
When copying a full node tree, we can avoid an O(n^2) loop finding a
unique name for every node if we assume they already have unique names.
That is a reasonable assumption, since unique names are verified
elsewhere when adding a new node.
Copying a node tree with about 4000 nodes took 42 ms before,
now it takes 6 ms.
Differential Revision: https://developer.blender.org/D13644
These pointers point to the new nodes when duplicating,
and their even used to point to "original" nodes for
"localized" trees. They're just a bad design decision
that make code confusing and buggy.
Instead, node copy functions now optionally add to a map
of old to new socket pointers. The case where the compositor
abused these pointers as "original" pointers are handled
by looking up the string node names.
Differential Revision: https://developer.blender.org/D13518
Goals of this refactor:
* More unified approach to updating everything that needs to be updated
after a change in a node tree.
* The updates should happen in the correct order and quadratic or worse
algorithms should be avoided.
* Improve detection of changes to the output to avoid tagging the depsgraph
when it's not necessary.
* Move towards a more declarative style of defining nodes by having a
more centralized update procedure.
The refactor consists of two main parts:
* Node tree tagging and update refactor.
* Generally, when changes are done to a node tree, it is tagged dirty
until a global update function is called that updates everything in
the correct order.
* The tagging is more fine-grained compared to before, to allow for more
precise depsgraph update tagging.
* Depsgraph changes.
* The shading specific depsgraph node for node trees as been removed.
* Instead, there is a new `NTREE_OUTPUT` depsgrap node, which is only
tagged when the output of the node tree changed (e.g. the Group Output
or Material Output node).
* The copy-on-write relation from node trees to the data block they are
embedded in is now non-flushing. This avoids e.g. triggering a material
update after the shader node tree changed in unrelated ways. Instead
the material has a flushing relation to the new `NTREE_OUTPUT` node now.
* The depsgraph no longer reports data block changes through to cycles
through `Depsgraph.updates` when only the node tree changed in ways
that do not affect the output.
Avoiding unnecessary updates seems to work well for geometry nodes and cycles.
The situation is a bit worse when there are drivers on the node tree, but that
could potentially be improved separately in the future.
Avoiding updates in eevee and the compositor is more tricky, but also less urgent.
* Eevee updates are triggered by calling `DRW_notify_view_update` in
`ED_render_view3d_update` indirectly from `DEG_editors_update`.
* Compositor updates are triggered by `ED_node_composite_job` in `node_area_refresh`.
This is triggered by calling `ED_area_tag_refresh` in `node_area_listener`.
Removing updates always has the risk of breaking some dependency that no
one was aware of. It's not unlikely that this will happen here as well. Adding
back missing updates should be quite a bit easier than getting rid of
unnecessary updates though.
Differential Revision: https://developer.blender.org/D13246
This commit adds a search menu when links are dragged above empty
space. When releasing the drag, a menu displays all compatible
sockets with the source link. The "main" sockets (usually the first)
are weighted above other sockets in the search, so they appear first
when you type the name of the node.
A few special operators for creating a reroute or a group input node
are also added to the search.
Translation is started after choosing a node so it can be placed
quickly, since users would likely adjust the position after anyway.
A small "+" is displayed next to the cursor to give a hint about this.
Further improvements are possible after this first iteration:
- Support custom node trees.
- Better drawing of items in the search menu.
- Potential tweaks to filtering of items, depending on user feedback.
Thanks to Juanfran Matheu for developing an initial patch.
Differential Revision: https://developer.blender.org/D8286
The const argument makes sense because these are the "source"
sockets, even though a const cast is necessary at one point.
The name "interface_socket" is an improvement over "stemp"
because the latter sounds like "temporary", or it confuses
the old socket template system with a node group's interface.
This node outputs the current scene time in seconds or in frames.
Use of this node eliminates the need to use drivers to control values
in the node tree that are driven by the scene time.
Frame is a float value to provide for subframe rendering for motion
blur.
Differential Revision: https://developer.blender.org/D13455
This node is a field input that outputs a separate index for each mesh island.
The indices are based on the order of the lowest-numbered vertex in each island.
Authoring help from @hooglyboogly
Differential Revision: https://developer.blender.org/D13504
Creates a new Edge Neighbors node which outputs a field
containing the number of faces connected to each edge.
Differential Revision: https://developer.blender.org/D13493
This adds a new Geometry to Instance node that turns every
connected input geometry into an instance. Those instances
can for example be used in the Instance on Points node.
Differential Revision: https://developer.blender.org/D13500
The `node_storage` functions to retrieve const and mutable structs
from a node are generated by a short macro that can be placed at the
top of each relevant file. I use this in D8286 to make code snippets
in the socket declarations much shorter, but I thought it would be
good to use it consistently everywhere else too.
The functions are also useful to avoid copy and paste errors,
like the one corrected in the cylinder node in this commit.
Differential Revision: https://developer.blender.org/D13491
- Added space below non doc-string comments to make it clear
these aren't comments for the symbols directly below them.
- Use doxy sections for some headers.
- Minor improvements to doc-strings.
Ref T92709
Creates 4 new nodes which provide topology information
for the mesh. Values are interpolated from the primary
domain in each case using basic attribute interpolation.
Vertex Neighbors
- Vertex Count
- Face Count
Face Neighbors
- Vertex Count
- Neighboring Face Count
Edge Vertices
- Vertex Index 1
- Vertex Index 2
- Position 1
- Position 2
Face Area
- Face Area
Differential Revision: https://developer.blender.org/D13343
As a followup to 338c1060d5, apply the same change to the node
drawing callback. This helps to simplify code when the complexity
of a callback isn't necessary right now.
Currently there are a few callbacks on `bNodeType` that do the same
thing for every node type except reroutes and frame nodes. Having a
callback for basic things complicates code and makes it harder to
understand, and reroutes and frames are special cases in larger way.
Arguably frame nodes shouldn't even be drawn like regular nodes,
given that it adds a case of O(N^2) looping through all nodes.
"Unrolling" the callbacks makes it easier to see what's happening,
and therefore easier to optimize.
Differential Revision: https://developer.blender.org/D13463
This helps to tell when a pointer is expected to be null, and avoid
overly verbose code when dereferencing. This commit also includes
a few other cleanups in this area:
- Use const in a few places
- Use `float2` instead of `float[2]`
- Remove some unnecessary includes and old code
The change can be continued further in the future.
This node calculates the dual of the input mesh. This means that faces
get replaced with vertices and vertices with faces. In principle this
only makes sense when the mesh in manifold, but there is an option to
keep the (non-manifold) boundaries of the mesh intact.
Attributes are propagated:
- Point domain goes to face domain and vice versa
- Edge domain and Face corner domain gets mapped to itself
Because of the duality, when the mesh is manifold, the attributes get
mapped to themselves when applying the node twice.
Thanks to Leul Mulugeta (@Leul) for help with the
ascii diagrams in the code comments.
Note that this does not work well with some non-manifold geometry,
like an edge connected to more than 2 faces, or a vertex connected to
only two faces, while not being in the boundary. This is because there
is no good way to define the dual at some of those points. This type
of non-manifold vertices are just removed for this reason.
Differential Revision: https://developer.blender.org/D12949
Replace compare floats node with a generalized compare node. The node
allows for the comparison of float, int, string, color, and vector.
The datatypes support the following operators:
Float, Int: <, >, <=, >=, ==, !=
String: ==, !=
Color: ==, !=, lighter, darker
(using rgb_to_grayscale value as the brightness value)
Vector Supports 5 comparison modes for: ==, !=, <, >, <=, >=
Average: The average of the components of the vectors are compared.
Dot Product: The dot product of the vectors are compared.
Direction: The angle between the vectors is compared to an angle
Element-wise: The individual components of the vectors are compared.
Length: The lengths of the vectors are compared.
Differential Revision: https://developer.blender.org/D13228
- Rename the Curve Parameter node to Spline Parameter.
- Add "Index on Spline" to the node. This output is the index of
the current point on it's parent spline rather than the entrire curve.
Differential Revision: https://developer.blender.org/D13275
The Domain Size node has a single geometry input and a selection for
the component type. Based on the component chosen, outputs containing
single values for the related domains are shown.
Mesh:
- Point Count
- Edge Count
- Face Count
- Face Corner Count
Curve:
- Point Count
- Spline Count
Point Cloud:
- Point Count
Instances:
- Instance Count
Differential Revision: https://developer.blender.org/D13365
Previously, node types had a callback that creates internal links. Pretty
much all nodes used the same callback though. The exceptions are the
reroute node (which probably shouldn't be mutable anyway) and some
input/output nodes that are not mutable.
Removing the callback helps with D13246, because it makes it easier
to reason about which internal links are created and when they change.
In the future, the internal links should be part of the node declaration.
This cleans up part of the code that still set the flag manually. Also, this
change helps with D13246 because it makes it easier to tag the node
tree as changed when the availability of a socket changed.
Previously, to get the declaration of a socket, one had to go
through `node->declaration`. Now this indirection is not necessary
anymore. This makes it easier to add more per-socket information
into the declaration and accessing it in various places.
Currently, this system is used by socket descriptions and node warnings
for unsupported geometry component types.
These nodes allow accessing and changing the stable/random ID used
for motion blur with instances and stable randomness.
Since rB40c3b8836b7a, the stable ID is a built-in attribute, so to be
consistent and allow changing it in the node tree like other built-in
attributes, it has get and set nodes.
In future use cases, a volume can contain many grids that represent the
density information. In this case, it's better if the volume to mesh node
creates a mesh based on all of the grids in the volume.
This is also a benefit to share-ability, since one doesn't have to
specify the grid name in the node. Instead, in the future we can have
a way to split particular grids into separate volumes, if only one
grid should be considered.
The code changes are relatively simple:
- Move the old volume to mesh node to the legacy folder.
- Run the volume to mesh node on all instance geometry, like elsewhere.
- Make the blenkernel's volume to mesh API a bit more specific.
Differential Revision: https://developer.blender.org/D12997
This adds a new image texture node for geometry nodes. It does not
reuse the same node that is used in shading, because we want to be
able to expose the image and frame as sockets.
There is a known update issue when a movie or image sequence is
used. That will be fixed separately (also see D12957).
Currently, the image socket is just a pointer to an Image ID data block.
This can contain single images but also movies and image sequences.
In the future, the definition of an image socket can be expanded to
include images that are generated from scratch in the node tree.
For more details read the discussion in D12827.
Some of the code is a direct port from cycles and should be cleaned
up a bit in the future. For example `image_cubic_texture_lookup`.
For still images, the frame input is ignored. Otherwise, the frame
has to be in a valid range for the node to work. In the future we
may add e.g. automatic looping functionality.
Differential Revision: https://developer.blender.org/D12827
This patch renames the node "String Substring" to "Slice String"
to conform to the "verb first" naming convention.
Default length is also changed to 10 to make it easier for users
to understand what the node does.
Reviewed By: HooglyBoogly
Differential Revision: https://developer.blender.org/D12931
This node takes a geometry set with instances as input and outputs
points located on the origins of the top level of instances in the
geometry set (not nested instances). It also has position and radius
inputs to allow overriding the default, and a selection input to only
generate points for some instances.
The use case for this node is a method to use geometry proximity on
instance origins, but in a more generic way that is flexible and useful
in other situations.
Differential Revision: https://developer.blender.org/D12893
These nodes just output a single value of their respective types,
making it possible to control multiple inputs with the same value.
Differential Revision: https://developer.blender.org/D12932
This commit adds an updated version of the curve to points that
supports fields. Only the position and radius are transferred
by default now, which should improve performance. The other outputs
like tangent and rotation are outputted with anonymous attributes.
I took the opportunity to change a few other small things:
- Name geometry sockets "Curve" and "Points" like other nodes.
- Remove the radius multiple of 0.1, which was confusing.
Thanks to @Johnny Matthews (guitargeek) for an initial patch.
Differential Revision: https://developer.blender.org/D12887
This commit adds a node that can be used to find and replace strings
inside of the input string. One initial use case is to have an easier
way to add line breaks to strings to the string to curves node.
Differential Revision: https://developer.blender.org/D12721
This patch includes an updated version of the raycast node that uses
fields instead of attributes for inputs instead of outputs. This makes
the node's UI much clearer. It should be faster too, since the
evaluation system for fields provides multi-threading.
The source position replaces the input geometry (since this node is
evaluated in the context of a geometry like the other field nodes).
Thanks to @guitargeek for an initial version of this patch.
Differential Revision: https://developer.blender.org/D12638
Previously, every node had its own declaration. This isn't ideal, because
it's often the case that all nodes of the same type have the same declaration.
That's the case for all nodes using declarations currently. It will not be true
for e.g. group nodes in the future.
Sharing node declarations between nodes makes it a bit more efficient.
Differential Revision: https://developer.blender.org/D12898
The Endpoint Selection node allows for the Selection of an aribitrary
number of endpoints from each spline in a curve. The start and end
inputs are evaluated on the spline domain. The result is outputted
as a boolean field on the point domain.
Differential Revision: https://developer.blender.org/D12846
Replaces the old Subdivision Surface Node.
Changes:
- Removes implicit instance realization, instead the node runs once
per unique instance.
- "Use Creases" becomes a crease field input applied to edges.
The values are clamped between zero and one.
Addresses T91763
Differential Revision: https://developer.blender.org/D12830
This commit adds an updated version of the old attribute transfer node.
It works like a function node, so it works in the context of a
geometry, with a simple data output.
The "Nearest" mode finds the nearest element of the specified domain on
the target geometry and copies the value directly from the target input.
The "Nearest Face Interpolated" finds the nearest point on anywhere on
the surface of the target mesh and linearly interpolates the value on
the target from the face's corners.
The node also has a new "Index" mode, which can pick data from specific
indices on the target geometry. The implicit default is to do a simple
copy from the target geometry, but any indices could be used. It is also
possible to use a single value for the index to to retrieve a single
value from an attribute at a certain index.
Differential Revision: https://developer.blender.org/D12785
