String vertexShaderId = GltfIds.generateId( "vertexShader_for_" + programId, gltf.getShaders()); gltf.addShaders(vertexShaderId, vertexShader); String fragmentShaderId = GltfIds.generateId( "fragmentShader_for_" + programId, gltf.getShaders()); gltf.addShaders(fragmentShaderId, fragmentShader);