Unreal Engine 5

Lumen vs. SDFGI: How Two Real-Time Global Illumination Systems Solve Indirect Lighting Differently

Unreal Engine 5's Lumen and Godot 4's SDFGI offer real-time global illumination without lightmaps, but use distinct methods impacting dynamic scene support and performance. Developers must choose based on project needs for dynamism, target hardware, and acceptable overhead.