Nvidia has launched DLSS 4.5 Ray Reconstruction, an update to its AI-driven technology designed to improve the quality of ray-traced and path-traced lighting and shadows. This new version aims to render these effects with greater accuracy than previous iterations.
According to Nvidia senior product marketing manager Ike Nnoli, DLSS 4.5 Ray Reconstruction builds upon the Super Resolution second generation Transformer architecture introduced with DLSS 4. This architecture features enhanced spatial awareness and offers developers more control, leading to improved lighting accuracy, responsiveness, and clearer motion in ray-traced games. The AI denoiser used in DLSS 4.5 Ray Reconstruction is also more efficient, allowing for faster reconstruction of scenes with reduced noise and grain artifacts from ray-tracing effects.
Nvidia demonstrated the improvements using a scene from Alan Wake 2, highlighting how the new version rendered shadows from a window shutter with less blur and more distinct light reflections on trash bags, making the texture details more apparent. The company indicated that this technology will be integrated into upcoming titles, including IO Interactive's 007: First Light on September 15th, which will feature path tracing, and Control Resonant upon its release on September 24th.
Nvidia stated that the DLSS model is continuously learning and being trained to address issues such as ghosting and shimmering, with different model presets available to manage these artifacts. The company suggests that these ongoing improvements contribute to a better overall visual experience for games that utilize high-end ray and path tracing features.