Materials, with provenance.

The room is an original real-time scene. The two detailed product meshes and environment maps are licensed reference assets, not products offered for sale or brands endorsing this prototype.

Sheen Chair

Original asset and author notes · Retained source receipt.

Unmodified model file. Scaled, placed and lit in the scene. The author notes explain the velvet material calibration and that the sample does not represent a real product.

Materials Variants Shoe

Original asset and licence · Retained source receipt.

Unmodified model file. Scaled to 31 cm maximum horizontal dimension, placed and lit for this demonstration. No endorsement by Shopify is implied.

Daylight and wood floor

Lebombo HDRI and Wood Floor texture set, Poly Haven. CC0 asset licence.

Original 1K files retained locally. Wood uses diffuse, normal and packed ambient-occlusion/roughness/metalness maps. HDR illumination is filtered at runtime; this has a first-load cost.

Babylon.js 9.32.0

Babylon.js source tag. Locally vendored npm packages babylonjs@9.32.0 and babylonjs-loaders@9.32.0, under the Apache 2.0 licence.

Versions, decisions, hashes and verification evidence

Checked 24 October 2026. Devanture and OfferDuel naming and marks remain provisional. This is a browser engine study, not a native-app or real-commerce release.