This page provides information on the V-Ray LightTextureFilter LOP.


Overview

The V-Ray LightTextureFilter is a USD prim that is assigned to a light to manipulate the lighting result. V-Ray runs the light filter “shader” on each light ray emitted by the light, allowing the filter to modify the cast rays.

To create a V-Ray LightTextureFilter, go to the ||stage Network|| > inside Light Filter Library node > right-click > V-Ray > LOP > V-Ray Light Texture LightFilter.


Parameters

The V-Ray LightTextureFilter LOP does not have any parameters.


Workflow

  • In a Stage network, create a Light Filter Library node.

  • Specify the Light Filter Path Prefix, where the light filter prims will be created in the scene tree.

  • Add vray to the existing Tab Menu Mask: usdlightfilter MaterialX vray




  • Dive inside the library node and create a V-Ray LightTextureFilter node (right-click > V-Ray > LOP > V-Ray Light texture LightFilter).

  • Create a preferable setup for the light filter, e.g. add V-Ray textures, etc.




  • Add the V-Ray LightTextureFilter to the light filter library list. You can just click the Auto-fill Light Filters button from the light filter library parameters.

  • Assign the light filter to an existing light. You can do this in several ways:

    • Use a multiparm on the Library node to assign each created prim to a light.
    • Specify a space-separated list of light filter prims to apply to the light in the light’s Light filters parameter.
    • Assign an existing light filter to a light by authoring a new light:filters relationship on the light prim with the Edit Properties LOP.


You can add more than one filter to lights. Don't forget that you must add all filters to the light filter library list.