Procedural textures, as provided by Revit, are not currently supported by Enscape. Any textures you'd like to see in Enscape have to be fed in as image files, via the Image menu option in Revit's Material Editor.
Although we'd love to include the ability to interpret Revit's procedural textures into Enscape, unfortunately, this won't be possible in the near future.
We would therefore like to provide you with some links to websites that will help you get the most out of materials when using Enscape with Revit: