Houdini 20.0 Nodes VOP nodes

MtlX Fake Caustics VOP node

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Apply fake caustics to the shadows of a surface. Intended to be plugged into the opacity input of a Mtlx Standard Surface. This node will output a different opacity value based on whether or not the ray used is a shadow ray. Due to limitations in the MaterialX surface node implementation, this only supports monochromatic opacity for now.

Parameters

passthrough

Color3 Color opacity of the surface if ray is not a shadow ray.

enable

Bool Whether or not to enable fake caustics

eta

Float Relative index of refraction between surface and the exterior

normal

Vector Normal vector to use. If nothing is connected uses world Normal from geometry

transmit

Float Scaling factor of transmission color

transmit_color

Color3 Fake transmission color of object that shadow ray gets tinted by

opacity

Float Minimum opacity of the object

Outputs

out

Color3 Color opacity of either the surface or shadow

See also

VOP nodes