Figure 5.19 - PBR material with maps
With the Normal Map Node, it is possible to control the direction of your
Bump. For instance, using negative values will invert the ridges created
by the map. Change the Strength value to control the height of a normal
map.
You can also add tilling control to the PBR material with the Texture
Coordinate and Mapping. Connect the Mapping to each one of the
Image Textures for full control (Figure 5.20).