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Implementing a foil sticker effect

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Blog Intermediate

Nikolaos Papadopoulos

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Description

Implementing a foil sticker effect is an August 2025 technical blog post by Nikolaos Papadopoulos on 4rknova.com showing a custom Three.js shader for peeling holographic foil stickers in the browser.

It covers angle-based thin-film style iridescence, procedural flake sparkle via noise and perturbed normals, vertex peel with Rodrigues rotation around a hinge axis plus fake AO from displacement, and a fragment path with environment LOD, Fresnel-Schlick, metalness and roughness controls, sRGB linearization, and alpha cutoff with simplified back-face shading. A live parameter demo is included; the shown source is for reading and commercial licensing is noted separately.

It is for intermediate WebGL and Three.js shader authors building stylized materials. Comfort with GLSL uniforms, varyings, and basic PBR terms helps.

Access is a free HTML article with full vertex and fragment listings and an interactive demo on the page.

It is useful when recreating collectible holographic sticker look without a full physically based thin-film solver.