So you want to have a shape in LayOut with a material from SketchUp? Probably the easiest way is to draw the shape in SketchUp 8, apply the material image you want and send it to LayOut 3. If you would upgrade to SketchUp and LayOut 2014 you would be able to apply raster image fills directly in LayOut but that feature hadn't been developed for LayOut 3. You could then export the texture image from SketchUp and bring that into LayOut.