IRIS, the Interactive Real-Virtual Interface SoC is proposed to realize real-time spatial computing. First, the Surface Perception Unit extract surface form trained 3D Guassian Splatting model, and exploit it for reducing energy consumption caused by EMA. Second, reconfigurable ALP-based Multiply-Accumulator Array realizes FP MAC with outstanding area and energy efficiency. Lastly, the Error Direction Cache eliminates redundant Back-Propagation computation so accelerates 3D modeling.

  - Surface Perception Unit with Coplanar-Gaussian Cluster

  - Fused MAC Unit consist of Reconfigurable FP Multiplier and Hybrid Aligned-Mantissa Adder Tree

  - Error Direction Cache for Backpropagation acceleration

  - ISSCC 2025