add tests for gltf extensions

MIERUNE · Mar 15, 2024 · ab09179 · ab09179
1 parent 297e0b1
commit ab09179
Show file tree

Hide file tree

Showing 106 changed files with 2,137 additions and 0 deletions.
diff --git a/tests/gltf_extensions.rs b/tests/gltf_extensions.rs
@@ -0,0 +1,63 @@
+use std::io::BufReader;
+use std::io::Read;
+
+use serde::{Deserialize, Serialize};
+
+use cesiumtiles::gltf_extensions::gltf;
+use cesiumtiles::gltf_extensions::mesh;
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Gltf {
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub meshes: Vec<Mesh>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub extensions: Option<GltfExtension>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq, Clone)]
+#[serde[rename_all = "camelCase"]]
+pub struct Mesh {
+    pub primitives: Vec<MeshPrimitive>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq, Clone)]
+#[serde[rename_all = "camelCase"]]
+pub struct MeshPrimitive {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub extensions: Option<MeshPrimitiveExtension>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq, Clone)]
+pub struct MeshPrimitiveExtension {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "EXT_mesh_features")]
+    pub ext_mesh_features: Option<mesh::ext_mesh_features::ExtMeshFeatures>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "EXT_structural_metadata")]
+    pub ext_structural_metadata: Option<mesh::ext_structural_metadata::ExtStructuralMetadata>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
+pub struct GltfExtension {
+    #[serde(rename = "EXT_structural_metadata")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ext_structural_metadata: Option<gltf::ext_structural_metadata::ExtStructuralMetadata>,
+}
+
+#[test]
+fn load_gltf_json() {
+    for path in glob::glob("./tests/samples/**/*.gltf").unwrap() {
+        let path = path.unwrap();
+        println!("loading {:?}", path);
+        let src = std::fs::read_to_string(path).unwrap();
+        let a: Gltf = serde_json::from_str(&src).unwrap();
+        let _ = format!("{:?}", a);
+
+        // 'null' should not appear in output
+        let a = serde_json::to_string(&a).unwrap();
+        assert!(!a.contains("null"));
+    }
+}
diff --git a/tests/samples/gltf/1.1/BoundingBoxTests/0_0_0-1_1_2/0_0_0-1_1_2.glb b/tests/samples/gltf/1.1/BoundingBoxTests/0_0_0-1_1_2/0_0_0-1_1_2.glb
diff --git a/tests/samples/gltf/1.1/BoundingBoxTests/0_0_0-1_2_1/0_0_0-1_2_1.glb b/tests/samples/gltf/1.1/BoundingBoxTests/0_0_0-1_2_1/0_0_0-1_2_1.glb
diff --git a/tests/samples/gltf/1.1/BoundingBoxTests/0_0_0-2_1_1/0_0_0-2_1_1.glb b/tests/samples/gltf/1.1/BoundingBoxTests/0_0_0-2_1_1/0_0_0-2_1_1.glb
diff --git a/tests/samples/gltf/1.1/BoundingBoxTests/0_0_2-1_1_4/0_0_2-1_1_4.glb b/tests/samples/gltf/1.1/BoundingBoxTests/0_0_2-1_1_4/0_0_2-1_1_4.glb
diff --git a/tests/samples/gltf/1.1/BoundingBoxTests/0_2_0-1_4_1/0_2_0-1_4_1.glb b/tests/samples/gltf/1.1/BoundingBoxTests/0_2_0-1_4_1/0_2_0-1_4_1.glb
diff --git a/tests/samples/gltf/1.1/BoundingBoxTests/2_0_0-4_1_1/2_0_0-4_1_1.glb b/tests/samples/gltf/1.1/BoundingBoxTests/2_0_0-4_1_1/2_0_0-4_1_1.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/house-3-0.glb b/tests/samples/gltf/1.1/MetadataGranularities/house-3-0.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/house-4-2.glb b/tests/samples/gltf/1.1/MetadataGranularities/house-4-2.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/house-5-3.glb b/tests/samples/gltf/1.1/MetadataGranularities/house-5-3.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/house1-1.glb b/tests/samples/gltf/1.1/MetadataGranularities/house1-1.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-0.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-0.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-1.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-1.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-2.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-2.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-3.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-beech-1-3.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-0.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-0.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-1.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-1.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-2.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-2.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-3.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-2-3.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-0.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-0.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-1.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-1.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-2.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-2.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-3.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-lime-3-3.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-0.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-0.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-1.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-1.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-2.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-2.glb
diff --git a/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-3.glb b/tests/samples/gltf/1.1/MetadataGranularities/tree-spruce-0-3.glb
diff --git a/tests/samples/gltf/1.1/MultipleContents/planePoints.glb b/tests/samples/gltf/1.1/MultipleContents/planePoints.glb
diff --git a/tests/samples/gltf/1.1/MultipleContents/planeTriangles.glb b/tests/samples/gltf/1.1/MultipleContents/planeTriangles.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_1__0_0_0.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_1__0_0_0.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_2__2_0_0.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_2__2_0_0.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_2__3_1_1.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_2__3_1_1.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__0_4_0.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__0_4_0.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__1_5_1.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__1_5_1.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__2_6_2.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__2_6_2.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__3_7_3.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_3__3_7_3.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__10_10_2.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__10_10_2.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__11_11_3.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__11_11_3.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__12_12_4.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__12_12_4.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__13_13_5.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__13_13_5.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__14_14_6.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__14_14_6.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__15_15_7.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__15_15_7.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__8_8_0.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__8_8_0.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__9_9_1.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_4__9_9_1.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__16_16_16.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__16_16_16.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__17_17_17.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__17_17_17.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__18_18_18.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__18_18_18.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__19_19_19.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__19_19_19.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__20_20_20.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__20_20_20.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__21_21_21.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__21_21_21.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__22_22_22.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__22_22_22.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__23_23_23.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__23_23_23.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__24_24_24.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__24_24_24.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__25_25_25.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__25_25_25.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__26_26_26.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__26_26_26.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__27_27_27.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__27_27_27.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__28_28_28.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__28_28_28.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__29_29_29.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__29_29_29.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__30_30_30.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__30_30_30.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__31_31_31.glb b/tests/samples/gltf/1.1/SparseImplicitOctree/content/content_5__31_31_31.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__0_21.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__0_21.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__10_31.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__10_31.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__11_30.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__11_30.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__12_25.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__12_25.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__13_24.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__13_24.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__14_27.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__14_27.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__15_26.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__15_26.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__16_5.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__16_5.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__17_4.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__17_4.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__18_7.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__18_7.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__19_6.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__19_6.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__1_20.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__1_20.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__20_1.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__20_1.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__21_0.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__21_0.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__22_3.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__22_3.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__23_2.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__23_2.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__24_13.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__24_13.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__25_12.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__25_12.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__26_15.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__26_15.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__27_14.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__27_14.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__28_9.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__28_9.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__29_8.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__29_8.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__2_23.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__2_23.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__30_11.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__30_11.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__31_10.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__31_10.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__3_22.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__3_22.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__4_17.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__4_17.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__5_16.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__5_16.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__6_19.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__6_19.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__7_18.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__7_18.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__8_29.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__8_29.glb
diff --git a/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__9_28.glb b/tests/samples/gltf/1.1/SparseImplicitQuadtree/content/content_5__9_28.glb
diff --git a/tests/samples/gltf/CESIUM_primitive_outline/BoxPrimitiveOutline.gltf b/tests/samples/gltf/CESIUM_primitive_outline/BoxPrimitiveOutline.gltf
@@ -0,0 +1,103 @@
+{
+  "extensionsUsed" : [ "CESIUM_primitive_outline" ],
+  "accessors" : [ {
+    "bufferView" : 0,
+    "byteOffset" : 0,
+    "componentType" : 5125,
+    "count" : 36,
+    "type" : "SCALAR",
+    "max" : [ 23 ],
+    "min" : [ 0 ]
+  }, {
+    "bufferView" : 1,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 24,
+    "type" : "VEC3",
+    "max" : [ 1.0, 1.0, 1.0 ],
+    "min" : [ 0.0, 0.0, 0.0 ]
+  }, {
+    "bufferView" : 2,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 24,
+    "type" : "VEC3",
+    "max" : [ 1.0, 1.0, 1.0 ],
+    "min" : [ -1.0, -1.0, -1.0 ]
+  }, {
+    "bufferView" : 3,
+    "byteOffset" : 0,
+    "componentType" : 5122,
+    "count" : 24,
+    "type" : "SCALAR",
+    "max" : [ 15 ],
+    "min" : [ 0 ]
+  } ],
+  "asset" : {
+    "generator" : "JglTF from https://github.com/javagl/JglTF",
+    "version" : "2.0"
+  },
+  "buffers" : [ {
+    "uri" : "data:application/gltf-buffer;base64,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",
+    "byteLength" : 720
+  }, {
+    "uri" : "data:application/gltf-buffer;base64,AAABAAEAAgACAAMAAwAAAAQABQAFAAYABgAHAAcABAAMAA0ACAAJAAsACgAOAA8A",
+    "byteLength" : 48
+  } ],
+  "bufferViews" : [ {
+    "name" : "indices",
+    "buffer" : 0,
+    "byteOffset" : 0,
+    "byteLength" : 144,
+    "target" : 34963
+  }, {
+    "name" : "attribute",
+    "buffer" : 0,
+    "byteOffset" : 144,
+    "byteLength" : 288,
+    "target" : 34962
+  }, {
+    "name" : "attribute",
+    "buffer" : 0,
+    "byteOffset" : 432,
+    "byteLength" : 288,
+    "target" : 34962
+  }, {
+    "name" : "outlineIndices",
+    "buffer" : 1,
+    "byteOffset" : 0,
+    "byteLength" : 48
+  } ],
+  "materials" : [ {
+    "pbrMetallicRoughness" : {
+      "baseColorFactor" : [ 0.0, 1.0, 0.0, 1.0 ],
+      "metallicFactor" : 1.0,
+      "roughnessFactor" : 1.0
+    },
+    "alphaMode" : "OPAQUE",
+    "doubleSided" : true
+  } ],
+  "meshes" : [ {
+    "primitives" : [ {
+      "extensions" : {
+        "CESIUM_primitive_outline" : {
+          "indices" : 3
+        }
+      },
+      "attributes" : {
+        "POSITION" : 1,
+        "NORMAL" : 2
+      },
+      "indices" : 0,
+      "material" : 0,
+      "mode" : 4
+    } ]
+  } ],
+  "nodes" : [ {
+    "mesh" : 0
+  } ],
+  "scene" : 0,
+  "scenes" : [ {
+    "nodes" : [ 0 ]
+  } ]
+}
diff --git a/tests/samples/gltf/EXT_mesh_features/FeatureIdAttribute.gltf b/tests/samples/gltf/EXT_mesh_features/FeatureIdAttribute.gltf
@@ -0,0 +1,102 @@
+{
+  "extensionsUsed" : [ "EXT_mesh_features" ],
+  "accessors" : [ {
+    "bufferView" : 0,
+    "byteOffset" : 0,
+    "componentType" : 5123,
+    "count" : 24,
+    "type" : "SCALAR",
+    "max" : [ 15 ],
+    "min" : [ 0 ]
+  }, {
+    "bufferView" : 1,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 16,
+    "type" : "VEC3",
+    "max" : [ 1.0, 1.0, 0.0 ],
+    "min" : [ 0.0, 0.0, 0.0 ]
+  }, {
+    "bufferView" : 2,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 16,
+    "type" : "VEC3",
+    "max" : [ 0.0, 0.0, 1.0 ],
+    "min" : [ 0.0, 0.0, 1.0 ]
+  }, {
+    "bufferView" : 3,
+    "byteOffset" : 0,
+    "componentType" : 5121,
+    "count" : 16,
+    "type" : "SCALAR",
+    "max" : [ 3 ],
+    "min" : [ 0 ]
+  } ],
+  "asset" : {
+    "generator" : "JglTF from https://github.com/javagl/JglTF",
+    "version" : "2.0"
+  },
+  "buffers" : [ {
+    "uri" : "data:application/gltf-buffer;base64,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",
+    "byteLength" : 496
+  } ],
+  "bufferViews" : [ {
+    "buffer" : 0,
+    "byteOffset" : 0,
+    "byteLength" : 48,
+    "target" : 34963
+  }, {
+    "buffer" : 0,
+    "byteOffset" : 48,
+    "byteLength" : 192,
+    "target" : 34962
+  }, {
+    "buffer" : 0,
+    "byteOffset" : 240,
+    "byteLength" : 192,
+    "target" : 34962
+  }, {
+    "buffer" : 0,
+    "byteOffset" : 432,
+    "byteLength" : 64,
+    "byteStride" : 4,
+    "target" : 34962
+  } ],
+  "materials" : [ {
+    "pbrMetallicRoughness" : {
+      "baseColorFactor" : [ 0.5, 1.0, 0.5, 1.0 ],
+      "metallicFactor" : 0.0,
+      "roughnessFactor" : 1.0
+    },
+    "alphaMode" : "OPAQUE",
+    "doubleSided" : true
+  } ],
+  "meshes" : [ {
+    "primitives" : [ {
+      "extensions" : {
+        "EXT_mesh_features" : {
+          "featureIds" : [ {
+            "featureCount" : 4,
+            "attribute" : 0
+          } ]
+        }
+      },
+      "attributes" : {
+        "POSITION" : 1,
+        "NORMAL" : 2,
+        "_FEATURE_ID_0" : 3
+      },
+      "indices" : 0,
+      "material" : 0,
+      "mode" : 4
+    } ]
+  } ],
+  "nodes" : [ {
+    "mesh" : 0
+  } ],
+  "scene" : 0,
+  "scenes" : [ {
+    "nodes" : [ 0 ]
+  } ]
+}