asset:        cube.mtl
title:        MTL fixture: the two materials of cube.obj (Phong exponent and PBR extension keys)
author:       EffectCraft contributors
source:       original work
license:      MIT OR Apache-2.0
added:        2026-10-02 by EffectCraft agent (M7.4)
notes:        Hand-written / script-generated test data for the model importer, made from the public Khronos glTF 2.0 specification and the Wavefront OBJ/MTL format description; not taken from any third-party file. The 2x2 texture is four solid colours.