Android filament 加载 .glb模型设置透明背景

isOpaque = false;

 fun makeItTransparent() {
        val options = renderer.clearOptions
        options.clear = true
        renderer.clearOptions = options
    }

 modelViewer.view.blendMode = com.google.android.filament.View.BlendMode.TRANSLUCENT
 modelViewer.scene.skybox = null