The UVW Transform texture takes an Input texture and applies a map to transform the Input texture’s UV layout on top of the Input texture’s own UV coordinate transformation (figure 1).
Figure 1: The UVW Transform texture applied to the Octane logo on top of the logo's existing UV coordinates
The UVW Transform texture works with other mapping textures like the Triplanar map texture, Mix texture, Cosine Mix texture, the logical Texture maps (Comparison), or arithmetic Texture maps (Add, Subtract, Multiply).