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UV Maps and Attributes

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Working with UV Maps

The Redshift plugin will extract automatically the uv maps available in the object, that can be used with the texture sampler node or other shading nodes with uv support. The plugin can extract uv maps named“ uv”, “ uv2”, “ uv3”, etc . available at point, vertex or primitive level.


The priority if a map with the same name is available in two or more levels is:

  1. Primitive level
  2. Vertex level
  3. Point level

  



Working with Attributes

Redshift for Houdini supports Houdini attributes in the shading system. The plugin can extract float attributes from one to four components .


The supported attributes are:

 

You can select the attributes that are going to be exported using the object spare parameters, but by default, or if the objects doesn't have the RS spare parameters, the attributes are extracted automatically. In any case, only the attributes used by the object shaders are going to be finally added to the objects GPU data to save VRAM. Specify the attributes is usefull to improve the extraction time in objects with a lot of attributes, or to reduce the size of the Redshift proxy objects.



You can retrieve the mesh Point and Vertex Attributes and the hair Primitive Attributesusing the RS Vertex Attribute and RS Point Attribute lookup VOP nodes in the Redshift SHOP shader networks


 

Additionally, you can use the RS User Data nodes to retrieve the Point Attributes from point clouds and instances and theDetail Attributes from the OBJ nodes.



Attributes Automatically Extracted by the Plugin

The plugin extracts automatically at least these attributes, without declare them in the attributes spare parameters.