What is Gantry
Gantry converts industry-standard 3D formats to USDZ for Apple platforms. It imports FBX, glTF, OBJ, and STL files, previews them in a RealityKit-powered viewport, and exports USDZ with full PBR material integrity.
What Gantry does
Section titled “What Gantry does”Convert. Import formats from Blender, Maya, Cinema 4D, or elsewhere and produce USDZ for AR Quick Look, visionOS, and iOS.
Preview. The RealityKit viewport shows what Apple platforms will render — accurate materials, lighting, and geometry before export.
Edit. The Material Editor adjusts materials per scene: choose USD Preview Surface or MaterialX, adjust per-channel values, and replace textures. What you see is what you ship.
Optimize. Texture Optimization compresses textures per channel with JPEG, PNG, or AVIF output and mipmap generation. KTX2 with Apple Texture Converter is available for RealityKit delivery; see Optimizing Textures for details.
What Gantry does not do
Section titled “What Gantry does not do”Gantry does not validate, diagnose, or repair USD scenes. Preflight handles those tasks.
If you import a model into Gantry and the export looks wrong — materials missing, geometry broken, textures incorrect — see Gantry and Preflight for when to reach for Preflight instead.
Who Gantry is for
Section titled “Who Gantry is for”3D artists and hobbyists who have models in Blender, Cinema 4D, or asset libraries and want to get them into USDZ format without writing code.
Apple developers building AR experiences or visionOS apps who need a reliable way to convert assets from their DCC tool and preview them before integrating into Xcode.
Content creators staging models, swapping textures, and capturing screenshots for social or promotional use.
Technical artists who need full material control — USD Preview Surface, MaterialX, KTX2 compression — without a full validation workflow.
Named after the launch gantry
Section titled “Named after the launch gantry”A launch gantry is the structure that services and prepares a vehicle before launch. It handles the structural prep. The vehicle does the flight.
That is the relationship between this tool and the asset pipeline: Gantry prepares the model. Preflight checks it. The asset ships.