Hello everyone!
I want to share a tool I’ve been developing for environment artists who need high-frequency surface details without the “mushy” look of AI-based generators.
It’s called Nack.
The Tech: Instead of using generative AI or neural networks, Nack utilizes a deterministic Shape from Shading (SfS) algorithm. It calculates surface normals and displacement by analyzing light distribution from a single smartphone photo.
Why no AI? While AI is great for filling gaps, it often halluncinates or smoothes out micro-details like stone pores, fabric weaves, or skin grains. Nack preserves the physical accuracy of the surface because it relies on optics and math, not probability.
Features for Devs:
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Speed: 4-10 seconds for a full map set.
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Offline: All processing happens on your phone (Snapdragon/Exynos optimized).
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Engine Ready: Standard 16-bit Normal and Depth maps for UE5 (Nanite-ready) and Unity.
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Single Photo: No need for 50+ photos or a cloud subscription.
I’m looking for feedback from the tech-art community. How important is “deterministic” accuracy for your current workflows compared to AI generators?
Demo & Full version available here: NACK — Pro 3D & PBR Scanner
(I’d love to hear your thoughts on the results!)