Portion of the geometry to update with the new attribute values.

The type of elements referenced by the group.

Name of the destination attribute to write to. This can be an existing attribute, in which case its size and type is maintained. It can also be one of the attributes used as a source.

If the destination attribute doesn’t exist, a default version of the first attribute will be used. This behavior changes depending on the Create Destination Attribute and Create Missing Destination as Scalar parameters.

The class of attribute to process: point, primitive, vertex, or detail. All the source attributes must be of the same class.

Whether to process this combination. If disabled, the combination is not applied.

How to combine the processed source value with the current destination attribute to get the candidate destination value for blending.

Adjustments to the source value prior to mixing into the current destination. This can save the need to pre-process attributes to get them into the correct range.

Source attribute to apply. If the destination attribute is scalar, the length of the source attribute is used. If the destination attribute is a vector and the source a scalar, it is extended by replicating the value. If both are vector, the source attribute is either truncated or zero-extended to match the destination attribute.

If blank and no source attribute is specified, an implicit zero attribute will be used as the source. The Add parameter can then be used to set the value of the source, allowing the setup of constant-value operations and blends.

Which input to read the source attribute from.

Unmatched elements will act as if the source attribute had a zero value.

The source attribute is scaled by this to get the source value. This is done prior to the addition or processing steps.

The scaled source attribute has this added to get the source value. This is done prior to the processing step.

After scaling and adding to the source attribute, the source value is finally processed with this operation. The result of this is then applied using the operation selected.

The final computed source value; after mixing with the current destination attribute using the operation, is blended into the new destination attribute. This is a linear interpolation using this scale factor, zero will leave the destination unchanged and one will replace it with the computed value. The final blend amount is clamped to 0-1.

An attribute to provide per-element blending amounts. Zero will leave the destination unchanged and one will replace with the computed value. However, this is scaled by the Blend parameter, and clamping is done after the scaling. So if the blend attribute isn’t in a 0-1 normalized range the Blend parameter can be used to scale it appropriately.

Which input to read the blend attribute from. Unmatched elements will have a blend value of zero.

Scale the resulting value by this amount.

Thresholding allows a continuous attribute to be switched to an on/off values depending on if it crosses a threshold value.

If the attribute exceeds this threshold value, replace it with the maximum clamp value. If it is below or equal to it, replace with the minimum clamp value. For vector attributes, this is done per component.

Enable clamping of the final value by the minimum value.

The minimum value to clamp to (or threshold to).

Enable clamping of the final value by the maximum value.

The maximum value to clamp to (or threshold to).

The attribute to use to match between the two inputs. If not present, the element number will be used.

If the destination attribute doesn’t exist, try to create it by matching the first of the source attributes.

If the destination attribute does not exist always create a float attribute. This has the effect of making an implicit length computation for all source vector attributes.

Remove all the source attributes after processing, unless one of them is also the destination attribute. This is useful for cleaning up temporary attributes that were created to assist in computation.

If specified attributes other than the destination are missing, raise an error. If erroring is disabled; missing source attributes will cause that combination to be skipped as if it were disabled. Missing blend attributes will be treated as if the blend attribute was 1.0 everywhere.