Worked on the ir-engine/ir-engine repository to enhance the core rendering pipeline by updating how default GLTF materials are handled. Focused on 3D graphics and material properties, the developer set the default metalness value to zero within the GLTFState, resulting in less reflective and more diffuse materials for imported assets. This adjustment, implemented using TypeScript, improved visual consistency across the GLTF workflow and reduced the need for manual material tuning when integrating new assets. The change streamlined asset import processes for downstream rendering applications, enabling faster and more predictable results without requiring per-asset adjustments to material settings.