Code generation changes to support the Cesium gltf extensions

Author: timglewis

build/SharpGLTF.CodeGen/Constants.cs

@@ -7,8 +7,11 @@ namespace SharpGLTF
     static class Constants
     {
         #region root paths
+        
+        //public static string RemoteSchemaRepo = "https://github.com/KhronosGroup/glTF.git";
+        public static string RemoteSchemaRepo = "https://github.com/CesiumGS/glTF.git";
 
-        public static string RemoteSchemaRepo = "https://github.com/KhronosGroup/glTF.git";
+        public static string RemoteSchemaBranch = "3d-tiles-next";
 
         /// <summary>
         /// Program directory

build/SharpGLTF.CodeGen/Program.cs

@@ -15,7 +15,7 @@ partial class Program
 
         static void Main(string[] args)
         {
-            SchemaDownload.Syncronize(Constants.RemoteSchemaRepo, Constants.LocalRepoDirectory);
+            SchemaDownload.Syncronize(Constants.RemoteSchemaRepo, Constants.RemoteSchemaBranch, Constants.LocalRepoDirectory);
 
             var processors = new List<SchemaProcessor>();
 
@@ -46,6 +46,11 @@ static void Main(string[] args)
             // gpu mesh instancing
             processors.Add(new MeshGpuInstancingExtension());
 
+            // Instance & mesh features & structural metadata
+            processors.Add(new InstanceFeaturesExtension());
+            processors.Add(new MeshFeaturesExtension());
+            processors.Add(new StructuralMetadataExtension());
+            
             // textures
             processors.Add(new TextureTransformExtension());
             processors.Add(new TextureDDSExtension());

build/SharpGLTF.CodeGen/SchemaDownload.cs

@@ -9,13 +9,13 @@ namespace SharpGLTF
     /// </summary>
     static class SchemaDownload
     {
-        public static void Syncronize(string remoteUrl, string localDirectory)
+        public static void Syncronize(string remoteUrl, string remoteBranch, string localDirectory)
         {
             if (LibGit2Sharp.Repository.Discover(localDirectory) == null)
             {
                 Console.WriteLine($"Cloning {remoteUrl} can take several minutes; Please wait...");
 
-                LibGit2Sharp.Repository.Clone(remoteUrl, localDirectory);
+                LibGit2Sharp.Repository.Clone(remoteUrl, localDirectory, new CloneOptions() { BranchName = remoteBranch });
 
                 Console.WriteLine($"... Clone Completed");