Selection Mask

Selection Mask Node has a single parameter - a name of the polygon selection tag that can be used for object. This node will generate white color for polygons that belong the the specified selection and black otherwise.

selection_mask_node0.png

Selection in Viewport and Render:

selection_mask_node1.jpg

selection_mask_node2.jpg

Decal Restriction

This selection node can be useful to restrict the appearance of decal to certain regions specified by polygon selection. The example below presents the selection mask combined with procedural decal mapping to let the decal appear alone on the single side of the shaderball. 

selection_mask_node3.png

selection_mask_node4.jpg