As a 3D artist, creating realistic materials is a crucial aspect of your workflow. Physically-based rendering (PBR) materials have become increasingly popular in recent years, as they offer a highly realistic look and feel to 3D models. In this article, we will dive into the basics of PBR materials, how they work, and how to create them effectively.
What are PBR Materials?
Physically-based rendering (PBR) is a rendering technique that simulates the behavior of light in a physically accurate manner. PBR materials are created using a set of parameters that describe how light interacts with the surface of an object. These parameters include diffuse color, specular color, roughness, metallic, and normal maps.
Diffuse color is the base color of the material, while specular color determines how shiny or reflective the material is. Roughness describes the microsurface of the material, and metallic determines whether a material is metal or non-metal. Normal maps add detail to the surface of the object by simulating bumps and crevices.
How do PBR Materials Work?
PBR materials work by simulating the behavior of light in a physically accurate manner. This means that the way light interacts with the surface of an object is calculated using a set of mathematical equations. These equations take into account the physical properties of the surface, such as its roughness and reflectivity, as well as the properties of the light source.