Materials and Basic Shading: Giving Objects Color and Surface Properties

Chapter 5's own tip box pointed here directly: shape alone has no visible color or surface appearance yet. This chapter covers materials — the properties that determine how a modeled shape actually looks once it's given color, and how light interacts with its own surface.

What a Material Actually Is

A material is a set of properties assigned to an object (or specific faces of it) describing how that surface looks and reacts to light — its color, how shiny or dull it appears, whether it looks like metal, plastic, or something else entirely. Without a material, an object renders with only a flat default gray appearance.

The Principled BSDF: Blender's Default Shader

The Principled BSDF is Blender's own default, all-purpose material type, covering the vast majority of everyday surface types — plastic, metal, rubber, skin — through a manageable set of straightforward properties rather than requiring a fully custom setup for every different kind of surface.

Base Color: The Object's Own Fundamental Color

Base Color sets the fundamental, underlying color of a material — red plastic, blue metal, white ceramic — the most basic property every material actually has, and usually the first one set when building a new material from scratch.

Roughness and Metallic: Controlling How Light Reflects

Roughness controls how sharply or diffusely light reflects off a surface — a low roughness value produces sharp, mirror-like reflections (glossy plastic, polished metal), while a high roughness value scatters light more broadly, producing a duller, matte appearance (rubber, unfinished wood). Metallic controls whether a surface behaves like a metal (reflecting colored light in a specific, physically distinct way) or a non-metal (most everyday materials — plastic, wood, skin, fabric). Together, these two properties alone define most of what makes a rendered surface actually read as a specific real-world material.

Assigning Materials to Multiple Objects or Faces

A single material can be assigned to many different objects at once, all updating together if that material's own properties change later — the same propagation behavior Figma's own components and design-system styles already established for design work, applied here to 3D surfaces. A single object can also have multiple materials assigned to different faces, useful for something like a mug with a differently-colored handle.

Viewport Shading Modes: Solid, Material Preview, and Rendered

Blender's own viewport can display a scene in several distinct shading modes: Solid (a flat, simplified default appearance ignoring actual material properties), Material Preview (an approximate real-time preview of how materials will actually look), and Rendered (the most accurate representation, including lighting effects, closest to a final render). Switching between these modes while working is routine, not a sign anything's gone wrong.

Hands-On Exercises