Displacement 3D models use height maps to add physical geometry depth (e.g., a rough wall with actual bumps), while Smart Materials 3D models apply dynamic textures that adapt to lighting, interaction, or environment.
Displacement modifies the model’s shape for static, detailed surfaces (like stone monuments)—it’s permanent and geometry-based. Smart Materials change appearance in real time (e.g., scratchable metal, shadow-darkened wood) without altering geometry.
For static objects needing texture depth, use displacement; for interactive/dynamic assets (e.g., games), Smart Materials add lifelike reactivity.