Displacement Mapping
Displacement mapping is a computer graphics technique used to add geometric detail to 3D surfaces by displacing vertices along their normals based on a texture map. It differs from bump mapping and normal mapping by actually modifying the mesh geometry, creating true parallax and self-shadowing effects. This technique is widely used in real-time rendering, visual effects, and game development to create highly detailed surfaces without increasing polygon count in the base mesh.
Developers should learn displacement mapping when creating high-fidelity 3D graphics where surface detail, accurate lighting, and geometric complexity are critical, such as in AAA games, architectural visualization, or film VFX. It's particularly valuable for rendering realistic terrains, organic surfaces like skin or fabrics, and detailed materials where parallax and shadow interactions must be physically accurate. Unlike simpler techniques, displacement mapping provides true geometric deformation, making it essential for photorealistic rendering pipelines.