--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/VertexDataManager.h	Wed Feb 20 17:00:40 2019 +0530
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2019, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef VertexDataManager_h_Included
+#define VertexDataManager_h_Included
+
+#import <Metal/Metal.h>
+#import "shaders/MetalShaderTypes.h"
+
+// ---------------------------------------------------------------------
+//TODO : This implementation should be redesigned as a singleton class
+//TODO : Drawing optimization can be done - if current primitive-type to be 
+//       drawn is equal to previous primitive-type in the list/array 
+//       (Similar to previous-op in OGL)
+// ---------------------------------------------------------------------
+
+typedef struct 
+{
+    MTLPrimitiveType type;
+    unsigned int offset_in_index_buffer;
+    unsigned int no_of_indices;
+    unsigned int primitiveInstances;
+} MetalPrimitiveData;
+
+void VertexDataManager_init(id<MTLDevice> device);
+
+void VertexDataManager_addLineVertexData(MetalVertex v1, MetalVertex v2);
+void VertexDataManager_addQuadVertexData(MetalVertex v1, MetalVertex v2, MetalVertex v3, MetalVertex v4);
+
+id<MTLBuffer> VertexDataManager_getVertexBuffer();
+id<MTLBuffer> VertexDataManager_getIndexBuffer();
+MetalPrimitiveData** VertexDataManager_getAllPrimitives();
+unsigned int VertexDataManager_getNoOfPrimitives();
+
+void VertexDataManager_freeAllPrimitives();
+
+// should be private
+void addVertex(MetalVertex vert);
+void addIndex(unsigned short vertexNum);
+
+#endif //VertexDataManager_h_Included