Save on draw calls

godot/astream/terrain/details/residental-house3.gltf

@@ -28,22 +28,23 @@
 			"alphaMode":"MASK",
 			"extensions":{
 				"KHR_materials_specular":{
-					"specularColorFactor":[
-						0.474271529955476,
-						0.474271529955476,
-						0.474271529955476
-					]
+					"specularColorTexture":{
+						"index":0
+					}
 				},
 				"KHR_materials_ior":{
 					"ior":1.4500000476837158
 				}
 			},
-			"name":"material_atlas_73934_1",
+			"name":"material_joint_atlas_1",
 			"pbrMetallicRoughness":{
 				"baseColorTexture":{
-					"index":0
+					"index":1
 				},
-				"metallicFactor":0
+				"metallicFactor":0,
+				"metallicRoughnessTexture":{
+					"index":2
+				}
 			}
 		}
 	],
@@ -68,13 +69,31 @@
 		{
 			"sampler":0,
 			"source":0
+		},
+		{
+			"sampler":0,
+			"source":1
+		},
+		{
+			"sampler":0,
+			"source":2
 		}
 	],
 	"images":[
 		{
 			"mimeType":"image/png",
-			"name":"Atlas_73934",
-			"uri":"textures/Atlas_73934.png"
+			"name":"Image",
+			"uri":"textures/Image.png"
+		},
+		{
+			"mimeType":"image/png",
+			"name":"joint-atlas-1",
+			"uri":"textures/joint-atlas-1.png"
+		},
+		{
+			"mimeType":"image/png",
+			"name":"joint-atlas-1-roughness",
+			"uri":"textures/joint-atlas-1-roughness.png"
 		}
 	],
 	"accessors":[