Relight any photo with precise control over virtual lights

PIXLRelight solves the problem of relighting single images with fine-grained control over light direction and color—a task where existing methods either limit control to text prompts and environment maps, accumulate errors through inverse-then-forward rendering, or require slow per-image optimization. The approach uses physically based rendering (PBR) intrinsics (albedo, diffuse shading, non-diffuse residuals) as conditioning signals for a transformer-based neural renderer. At training, it learns from multi-illumination photograph sets; at inference, it extracts the same intrinsics from a quick path-traced render of a coarse 3D reconstruction under user-specified lights, then applies target illumination to the source photo while preserving fine detail. Runs in under 100ms per image. Code and trained models are released.