Skip first baking in ModelLoader (#3621)

src/main/java/net/minecraftforge/client/model/ModelLoader.java

@@ -125,6 +125,7 @@ import javax.annotation.Nonnull;
 
 public final class ModelLoader extends ModelBakery
 {
+    private static boolean firstLoad = Boolean.parseBoolean(System.getProperty("fml.skipFirstModelBake", "true"));
     private final Map<ModelResourceLocation, IModel> stateModels = Maps.newHashMap();
     private final Set<ModelResourceLocation> missingVariants = Sets.newHashSet();
     private final Map<ResourceLocation, Exception> loadingExceptions = Maps.newHashMap();
@@ -176,6 +177,16 @@ public final class ModelLoader extends ModelBakery
         HashMultimap<IModel, ModelResourceLocation> models = HashMultimap.create();
         Multimaps.invertFrom(Multimaps.forMap(stateModels), models);
 
+        if (firstLoad)
+        {
+            firstLoad = false;
+            for (ModelResourceLocation mrl : stateModels.keySet())
+            {
+                bakedRegistry.putObject(mrl, missingBaked);
+            }
+            return bakedRegistry;
+        }
+
         ProgressBar bakeBar = ProgressManager.push("ModelLoader: baking", models.keySet().size());
 
         for(IModel model : models.keySet())