Precomputed Lighting
Precomputed lighting is a computer graphics technique where lighting calculations, such as global illumination, shadows, and ambient occlusion, are performed offline and stored in data structures like lightmaps or irradiance volumes. This allows for high-quality, realistic lighting effects to be rendered in real-time applications, such as video games or architectural visualizations, without the performance cost of dynamic calculations. It is commonly used in static or semi-static environments where lighting conditions do not change frequently.
Developers should learn precomputed lighting when working on real-time 3D applications, such as games or simulations, where performance is critical and lighting can be pre-baked for static scenes. It is essential for achieving photorealistic visuals in engines like Unity or Unreal Engine, especially for platforms with limited hardware resources, such as mobile devices or consoles. Use cases include level design in AAA games, virtual reality experiences, and architectural walkthroughs where lighting consistency and quality are prioritized over dynamic changes.