Making and Presenting Textures using Photoshop, Mixer and Toolbag with RGB channel packing
Starting with a heightmap in Photoshop, export and import to Quixel Mixer and then present it in Marmoset Toolbag 3.
Includes channel packing into RGB
Quixel Mixer (Free) : https://quixel.com/mixer
Mamorset Toolbag (30day Trial): https://marmoset.co/toolbag/