To texture a low-poly prefab 3D model without raising its polygon count, use **texture baking**—transfer detail from a temporary simple high-poly version to the prefab via texture maps (e.g., normal, ambient occlusion).
Baking projects surface details (bumps, shadows) from the high-poly model onto 2D maps. These maps are applied to the low-poly prefab, adding depth without extra polygons. Key maps include: - Normal: Creates 3D-like texture (e.g., scratches, ridges). - Albedo: Sets base color. - Ambient occlusion (AO): Adds soft crevice shadows.
For beginners, use Blender’s tools: 1. Make a basic high-poly version of your prefab. 2. UV-unwrap the low-poly prefab (critical for map alignment). 3. Bake normal and AO maps. 4. Apply the maps to the low-poly model.
This method keeps your prefab lightweight while adding realistic detail—no high poly count required.