用Sceneform (ARCore)加载GLB文件及其纹理

Question

我一直试图加载一个GLB文件，但它的纹理似乎不会加载，即使我在同一个资产文件夹中有PNG文件。

下面是代码：

val GLTF_ASSET = "model.glb"

ModelRenderable.builder()
            .setSource(
                this, RenderableSource.builder().setSource(
                    this,
                    Uri.parse(GLTF_ASSET),
                    RenderableSource.SourceType.GLB
                )
                    .setScale(0.5f)
                    .setRecenterMode(RenderableSource.RecenterMode.ROOT)
                    .build()
            )
            .setRegistryId(GLTF_ASSET)
            .build()
            .thenAccept {
                loadModel(it)
            }
            .exceptionally {
                val builder = AlertDialog.Builder(this)
                builder.setMessage(it.message)
                    .setTitle("error!")
                val dialog = builder.create()
                dialog.show()
                return@exceptionally null
            }

我在日志里看到了这样的信息：

W/ImpView: 1 textures declared in source assets were not found:
2019-10-17 17:30:48.453 22579-22682/com.example.arcore_test W/ImpView:  missing: '49264a5c-5cb7-44cf-bc52-04c4d26f0457.png'
2019-10-17 17:30:48.453 22579-22682/com.example.arcore_test W/ImpView:  (use -I to add other search folders)
2019-10-17 17:30:55.806 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 0 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.806 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 0] missing required attributes (0xf), declared=0xb
2019-10-17 17:30:55.806 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 1 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.806 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 1] missing required attributes (0xf), declared=0xb
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 2 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 2] missing required attributes (0xf), declared=0xb
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 3 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 3] missing required attributes (0xf), declared=0xb
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 4 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 4] missing required attributes (0xf), declared=0xb
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 5 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.807 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 5] missing required attributes (0xf), declared=0xb
2019-10-17 17:30:55.808 22579-22579/com.example.arcore_test W/Filament: setMaterialInstanceAt() on primitive 6 of Renderable at 1: declared attributes [POSITION, TANGENTS, UV0] do no satisfy required attributes [POSITION, TANGENTS, COLOR, UV0]
2019-10-17 17:30:55.808 22579-22579/com.example.arcore_test W/Filament: [instance=1, primitive @ 6] missing required attributes (0xf), declared=0xb

Answer 1

这通常意味着在GLTF文件中，您已经声明了一个资源纹理，并且使用该纹理的路径无效。

确认你的GLTF文件是正确包装的纹理包括。

在我看来，你对待这像SFB文件或DAE文件，在图像文件中你有单独的纹理。让你的设计师出口他们的包装纹理，你应该是好的。

https://www.khronos.org/blog/art-pipeline-for-gltf