This looks very confusing, I know! But this is way easier than you think 🙂 Displacement Map: this map in particular is very important if your material is rough or needs to look and act like a 3D object (stone wall, stone floor, rattan, etc.).

Bump Map: if the material you have in mind has a visible “texture” to it (not smooth like glass), then you’ll need this too.Reflection Map: not all materials reflect light the same way (if at all), so having this map will make sure the render engine reflects the light hitting this material realistically.High Quality Diffuse Map: this is what your material will look like.In order to create realistic V-Ray materials you need a few things: This is where you will have to create your own material to match your model, and you need to know exactly how to do so the right way so you don’t mess up your model or final render. But not all materials are requested in a custom design, you may find yourself limited if you only use that selection of materials in designs for your clients and your clients may ask for specific patterns or color options that you can’t find in the V-Ray Material Library or even online in ready packed materials (*.vismat). V-Ray 3.4 comes with a good material library that has a few good materials that are necessary to make a model come to life. How to Create your Own Materials in V-Ray 3.4

Vray 3.4 sketchup 2017