TRELLIS.2 3D MODEL NOW RUNS ON MAC SILICON

INDUSTRY DESK■ 1 MIN READ

MON, APR 20, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

A developer has successfully ported Microsoft's TRELLIS.2 image-to-3D model to Apple Silicon Macs, eliminating the need for Nvidia GPUs. The port replaces CUDA-specific operations with pure PyTorch alternatives.

The original TRELLIS.2 model, a 4-billion-parameter image-to-3D converter, relied on CUDA-exclusive components including flash_attn, nvdiffrast, and custom sparse convolution kernels—none compatible with macOS. The port implements pure-PyTorch replacements across nine files: a gather-scatter sparse 3D convolution, SDPA attention for sparse transformers, and Python-based mesh extraction that replaces CUDA hashmap operations. Total modifications span a few hundred lines. The changes enable the model to run via PyTorch's Metal Performance Shaders (MPS) backend on Apple Silicon chips. This makes advanced 3D generation accessible to Mac users without requiring external GPU hardware or cloud services. The project reduces barriers to running state-of-the-art generative models locally on consumer hardware.

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► Hacker News

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TRELLIS.2 3D MODEL NOW RUNS ON MAC SILICON

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