Lightmaps optimize lighting performance in 3D models by precomputing static lighting data onto textures, reducing real-time rendering calculations.
They store pre-rendered lighting effects (e.g., shadows, ambient occlusion) for static objects. During rendering, these textures are applied directly, eliminating the need for real-time light calculations—saving GPU resources significantly.
Ideal for static scenes (e.g., video games, architectural visualizations) where lighting doesn’t change. To implement, bake lightmaps using tools like Unity or Blender, balancing visual quality and rendering efficiency.