Houdini 19.5 Nodes Shader nodes

Mantra: Image3D Procedural shader node

Generates an iso-surface from a 3D texture image (.i3d) file.

If you don’t specify a bounding box for the procedural, the bounding box of the texture map will be use.



I3D File

Specifies the file to render.

Density Channel

The name of the density channel.

Density Threshold

The density threshold at which to generate the iso-surface.

Level Of Detail

Specifies an alternate level of detail for the polygonization of the texture.


The filter to be used in evaluation of the texture.

Filter Width

The width of the filter.

IFD Bounds

Bounding Box

The bounding box controls let you specify a bounding box for the referenced geometry. Only when this bounding box is “on screen” will mantra load the referenced geometry. You can set Bounding box to No bounding box required, in which case mantra will always load the references geometry regardless. You can also specify the bounding box by referencing the SOP’s bounding box in the SOP Bounds parameter.

SOP Bounds

The geometry whose bounding box you want to reference.

Min Bounds

The minimum bounding box dimensions, when setting explicit bounds.

Max Bounds

The maximum bounding box dimensions, when setting explicit bounds.

Shader nodes