Create a function on CurvesGeometry that can also be used for an edit
mode operator in the future. Dealing with CustomData directly means the
code is a bit more verbose than would be ideal, but this would be a
simple thing to clean up in the future if we get an attribute API here.
Also change the reverse node to first work on a read-only geometry
component, and only get write access if there is a curve selected.
Differential Revision: https://developer.blender.org/D14375
This will mostly just remove the overhead of converting
to and from the old curves type, though it also does open
some opportunities for multi-threading in the future.
Make the new curves' translate and transform functions also affect
the handle position attributes.
Differential Revision: https://developer.blender.org/D14372
Remove the conversion to and from `CurveEval` by supporting the
new Curves data-block in the node. This allows for some simplifications
to the code, as well as a fix for transfering curve domain attributes
when duplicating the curve domain.
The performance improvements (obverved through the timings overlay)
can be relatively massive with many curves. When duplicating 10000
4-point curves to become 2 million curves, I observed an approximate
150x improvement, from about 3 seconds to about 20ms.
- Pass less redundant information in function arguments.
- Use `IndexRange` more instead of direct offset calculations.
- Use specific geometry component types for specialized functions.
- Use const arguments.
- Declare variables closer to where they are created or used.
- Remove some redundant logic.
- Simplify the description for the output geometry.
Ever since d5b72fb06c, shader nodes have been in the
`blender::nodes` namespace, so they don't need to use that to access
Blender's C++ types and functions.
Somehow exposed after 943b919fe8, linking could fail because
bf_nodes was not properly configured as a dependency of bf_nodes_shader.
Also add the dependency to the geometry nodes module.
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
This commit adds three nodes:
- `Remove Attribute`: Removes an attribute with the given name
- `Named Attribute`: A field input node
- `Store Named Attribute`: Puts results of a field in a named attribute
They are added behind a new experimental feature flag, because further
development of attribute search and name dependency visualization will
happen as separate steps.
Ref T91742
Differential Revision: https://developer.blender.org/D12685
So far it was needed to declare a new RNA struct to `RNA_access.h` manually.
Since 9b298cf3db we generate a `RNA_prototypes.h` for RNA property
declarations. Now this also includes the RNA struct declarations, so they don't
have to be added manually anymore.
Differential Revision: https://developer.blender.org/D13862
Reviewed by: brecht, campbellbarton
This commit fixes T96229.
The maximum possible radius was being used for 3 point
splines, regardless of the current radius.
Reviewed By: HooglyBoogly
Maniphest Tasks: T96229
Differential Revision: https://developer.blender.org/D14311
My own error when committing 0602852860. It appears that
the "Endpoint" knots modes should be handled together, otherwise
out of bounds array access is possible.
This patch enables all 8 combinations of Nurbs modes: Cyclic,
Bezier and Endpoint. Also removes restriction on Bezier Nurbs order.
The most significant changes are mode combinations bringing new
meaning. In D13891 is a scheme showing NURBS with same control
points in a modes, and also further description of each possible case.
Differential Revision: https://developer.blender.org/D13891
Prevents a few unneeded calls to `std::sin`, with an observed
performance improvement of about 1 percent.
Differential Revision: https://developer.blender.org/D14279
The main improvement is a code simplification, because attributes don't
have to be transferred separately for each curve, and all attributes can
be handled generically. Performance improves significantly when the
output contains many curves. Basic testing with a 2 million curve output
shows an approximate 10x performance improvement.
An alpha component can be specified for an object's color. This adds an alpha
socket to the object info shader node allowing for the alpha component of the
object's color to be accessed in the shader editor.
Differential Revision: https://developer.blender.org/D14141
The node should be faster than in 3.1, for a few reasons:
- It doesn't need to calculate and allocate the curve offsets.
- It doesn't need to de-reference a pointer for each curve.
- The inputs are accessed from the virual arrays fewer times.
On top of that, I added two other performance improvements:
- The node is multi-threaded when there are many curves.
- There are generated special cases for single value and span inputs.
**Performance**
With a set position node affecting 1 million splines with a selection
based on this node, on an Intel i5 8250U (times are approximate):
| Before | After | Speedup |
| 760 ms | 60 ms | 13x |
Differential Revision: https://developer.blender.org/D14233
The node unnecessarily converted to the old data structure to check if
there were any poly splines. Instead, that warning is just removed,
because the node now still sets resolution values in that case, they
just aren't used (before the values weren't set at all). Either way, it
wasn't clear that looping though all of the curve types was worth
the performance cost here.
This utility is useful when using C types that own some resource in
a C++ file. It mainly helps in functions that have multiple return
statements, but also simplifies code by moving construction and
destruction closer together.
Differential Revision: https://developer.blender.org/D14215
Create `Curves` directly, instead of using the conversion from
`CurveEval`. This means that the `tilt` and `radius` attributes
don't need to be allocated. The old behavior is kept by using the
right defaults in the conversion to `CurveEval` later on.
The Bezier segment primitive isn't ported yet, because functions
to provide easy access to built-in attributes used for Bezier curves
haven't been added yet.
Differential Revision: https://developer.blender.org/D14212
Add a std::move in some places to prevent arrays from being copied.
These cases were potentially optimized by the compiler, but this makes
it more explicit.
Differential Revision: https://developer.blender.org/D14129
This commit changes `CurveComponent` to store the new curve
type by adding conversions to and from `CurveEval` in most nodes.
This will temporarily make performance of curves in geometry nodes
much worse, but as functionality is implemented for the new type
and it is used in more places, performance will become better than
before.
We still use `CurveEval` for drawing curves, because the new `Curves`
data-block has no evaluated points yet. So the `Curve` ID is still
generated for rendering in the same way as before. It's also still
needed for drawing curve object edit mode overlays.
The old curve component isn't removed yet, because it is still used
to implement the conversions to and from `CurveEval`.
A few more attributes are added to make this possible:
- `nurbs_weight`: The weight for each control point on NURBS curves.
- `nurbs_order`: The order of the NURBS curve
- `knots_mode`: Necessary for conversion, not defined yet.
- `handle_type_{left/right}`: An 8 bit integer attribute.
Differential Revision: https://developer.blender.org/D14145
