5.5 Transparent and glass materials

For materials that require transparency, you can use options like the

Glass BSDF and Transparency BSDF. With the Transparency BSDF, you

will get materials with a simple effect that doesn't divert light (Figure

5.22).

Figure 5.22 - Transparent BSDF (Cycles)

In case you need more sophisticated transparency, you should pick the

Glass BSDF. The shader has two settings that will help you achieve a

more realistic effect:

IOR: An index that controls the refraction of light.

Roughness: Here, you can control the smoothness of your

surface reflection. Values close to zero will create a polish glass

surface, and higher values will make it look grainy.