![]() In reflection law, when the photon is hit by a surface, the reflection angle of light is equal to the angle of incidence. Glossy material is used to create materials with reflective properties. As we will see in the future, you can create extremely realistic reflective surfaces with the "Metal Material" feature, which allows you to use complex refraction values that only show metallic features. With these models you can now create real surface properties such as the physical precision of the specular lobes, the fresnel effect, the law of conservation of energy, and anisotropy. So when using Glossy material you can now use physical BRDFs Beckmann, GGX and Ward. As we mentioned in the BRDF section, there were no requirements to produce a physical accuracy reflection in the original BRDF of Octane.
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