Swift 在visionOS RealityView中使用.GenerateText时，未显示Reality Composer Promaterial 纹理

我已经为visionOS创建了一个应用程序，并在Reality Composer Pro中打开了Packages/RealityKitContent/package个文件. 我点击右上角的+按钮，将Material Library/Generic/Metal/ScratchedMetallicPaint种material 添加到默认球体中. 我可以看到右下角的金属纹理.

然后，每当用户在选取器Picker中 Select 新的material 时，我在我的代码中使用如下material .挑库后的物料newValue的值为ScratchedMetallicPaint

 var dynamicMateriala = try await ShaderGraphMaterial(named: "/Root/\(newValue)",
                           from: "Scene.usda",
                           in: realityKitContentBundle)
                            
// setting UV scale parameter did not help 
 try! dynamicMateriala.setParameter(name: "UV_Scale", value:  .simd2Float(SIMD2<Float>(repeating: 20)))
viewModel.dynamicMaterial = dynamicMateriala

在RealityView更新关闭中:

let font = UIFont(name: "Arial", size: 0.07)
let resource: MeshResource = .generateText(message, extrusionDepth: 0.01, font: font)

if viewModel.dynamicMaterial != nil {
        let fontEntity = ModelEntity(mesh: resource, materials: [viewModel.dynamicMaterial!])
 }

Problem:个 ViewModel是ObservableObject并正确传递material .问题是，从Reality Compose Pro传递的material 只有color个基础，纹理是not个.

我找到了类似问题的答案:similar，但不确定如何解决.

基于这个答案，我try 了以下方法，即我们需要首先将material 分配给RealityComposerPro中的实体，但甚至第一次打印都没有记录下来.

 if let scene = try? await Entity(named: "Root", in: realityKitContentBundle){
                            
                            print("In Root")
                            if let box = scene.findEntity(named: "Cube") as? ModelEntity {
                                print("In Cube")
                                
                                let materials = box.model?.materials
                                print("In Materials \(materials)")
                              
                            }
                        }

Does anybody know what might be the problem?
Thanks!