private static void LoadTextures(AssetImporterGltfMeshContext context)
        {
            if (context.Model.Textures == null)
            {
                return;
            }

            for (int t = 0; t < context.Model.Textures.Length; t++)
            {
                glTFLoader.Schema.Texture tex = context.Model.Textures[t];
                if (tex.Source == null)
                {
                    continue;
                }

                int   imageIndex = tex.Source.Value;
                Image img        = context.Model.Images[imageIndex];

                using (Stream str = glTFLoader.Interface.OpenImageFile(context.Model, imageIndex, context.FullFilename))
                {
                    string surfaceAssetName = GetImageAssetName(img, imageIndex, context.FullFilename);

                    AssetImporterSurface2D.Import(str, surfaceAssetName, context.PackageToSaveIn.PackageName, context.FullFilename, out Surface2D surface);
                    if (surface != null)
                    {
                        context.ImportedAssets.Add(surface);
                    }
                }
            }
        }
        private static List <Surface2D> LoadTextures(Package packageToSaveIn, Gltf model, string fullFilename)
        {
            List <Surface2D> resultList = new List <Surface2D>();

            if (model.Textures == null)
            {
                return(resultList);
            }

            for (int t = 0; t < model.Textures.Length; t++)
            {
                Texture tex = model.Textures[t];
                if (tex.Source == null)
                {
                    continue;
                }

                int   imageIndex = tex.Source.Value;
                Image img        = model.Images[imageIndex];

                using (Stream str = glTFLoader.Interface.OpenImageFile(model, imageIndex, fullFilename))
                {
                    string surfaceAssetName = GetImageAssetName(img, imageIndex, fullFilename);

                    AssetImporterSurface2D.Import(str, surfaceAssetName, packageToSaveIn.PackageName, fullFilename, out Surface2D surface);
                    if (surface != null)
                    {
                        resultList.Add(surface);
                    }
                }
            }

            return(resultList);
        }