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Nvidia has announced the release of DLSS 3.5, a major update to its Deep Learning Super Sampling feature. Set to launch in the fall, DLSS 3.5 introduces Ray Reconstruction, a new addition to Nvidia’s RTX feature lineup. This feature enables higher quality ray tracing without sacrificing performance and is positioned as an improvement in image quality over traditional ray tracing methods.

DLSS 3.5 will first be available for Cyberpunk 2077: Phantom Liberty, Portal RTX, and the soon-to-be-released Alan Wake 2. Unlike Frame Generation, Ray Reconstruction will work on all RTX graphics cards and can be enabled or disabled as a separate setting in the graphics menu. DLSS 3.5 comprises four different features, including Super Resolution, Deep Learning Anti-Aliasing, and Ray Reconstruction (compatible with all RTX GPUs), while Frame Generation is exclusive to the RTX 40-series graphics cards.

Ray Reconstruction, like other DLSS features, utilizes AI processing on the Tensor cores of RTX graphics cards. It addresses the issue of lost detail during the denoising process of ray tracing. By taking more samples per pixel, noise is reduced, but it becomes too demanding for real-time gaming. The solution is denoising, which cleans up the image after sufficient samples are taken.

Traditionally, denoising methods, such as spatial and temporal denoising, have limitations and drawbacks. Fine details can be lost, ghosting may occur on fast-moving objects, and reflections on stationary objects can flicker. Ray Reconstruction overcomes these shortcomings by employing AI-powered denoising. It recognizes the lighting conditions in the scene, adaptively adjusts the denoising process, and retains necessary details for high-quality upscaling.

Nvidia has demonstrated the capabilities of Ray Reconstruction with examples from Portal RTX and Cyberpunk 2077, showcasing its ability to produce more realistic lighting conditions without impacting performance. Nvidia claims that in certain scenarios, it can even improve performance slightly compared to traditional denoising methods.

The true performance and effectiveness of DLSS 3.5’s Ray Reconstruction will be determined once it is released in the fall, but based on Nvidia’s demonstrations, it appears to be a promising and impressive feature for enhancing ray tracing.

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