Merge pull request #1544 from ousttrue/fix/false_other_renderer

false not throw

Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/MeshExportInfo.cs

@@ -47,7 +47,8 @@ namespace UniGLTF
             }
             else
             {
-                throw new NotImplementedException();
+                // LineRenderer ... etc
+                return false;
             }
         }