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FilmSkool — a free film school

Here is the powerful curvature formula.

Explains a curvature-based shader setup that detects convex and concave edges on a mesh, useful for adding wear, dirt or highlight effects without hand-painting masks. A reusable node group for any hard-surface material.

CGMatter · 5 min · Intermediate · VFX · VFX · 2026

What you take away

Build a curvature mask from a shader node setup to drive edge wear automatically

Watch it

Filed under

Oscar winners for visual effects

Books on visual effects

Kit for this lesson

Corsair 128GB DDR5 kit — For Unreal, caches and twelve open applications
Intel Core Ultra 9 285K — Quick Sync, which some codecs still love
AMD Ryzen 9 9950X — 16 cores — the sweet spot for a cutting room
NVIDIA GeForce RTX 5080 — The sensible half-price render card
NVIDIA RTX 4000 Ada — Workstation card, single slot, 20GB
Apple Mac mini M4 — The cheapest Mac that cuts 4K without complaint

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