--- /dev/null	2019-03-05 14:31:15.000000000 +0300
+++ new/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLLayer.h	2019-03-05 14:31:15.000000000 +0300
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 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 MTLLayer_h_Included
+#define MTLLayer_h_Included
+#import <Metal/Metal.h>
+#import <MetalKit/MetalKit.h>
+#import "common.h"
+
+#import <JavaNativeFoundation/JavaNativeFoundation.h>
+
+@interface MTLLayer : CAMetalLayer
+{
+@private
+    JNFWeakJObjectWrapper *javaLayer;
+
+    // intermediate buffer, used the RQ lock to synchronize
+    MTLContext* ctx;
+    float bufferWidth;
+    float bufferHeight;
+}
+
+@property (nonatomic, retain) JNFWeakJObjectWrapper *javaLayer;
+@property (readwrite, assign) MTLContext* ctx;
+@property (readwrite, assign) float bufferWidth;
+@property (readwrite, assign) float bufferHeight;
+
+- (id) initWithJavaLayer:(JNFWeakJObjectWrapper *)layer;
+
+- (void) blitTexture;
+- (void) fillParallelogramCtxX:(jfloat)x
+                             Y:(jfloat)y
+                           DX1:(jfloat)dx1
+                           DY1:(jfloat)dy1
+                           DX2:(jfloat)dx2
+                           DY2:(jfloat)dy2;
+@end
+
+#endif /* CGLLayer_h_Included */