--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/macosx/classes/sun/java2d/metal/MTLBufImgOps.java	Fri Jun 21 12:08:37 2019 +0530
@@ -0,0 +1,112 @@
+/*
+ * 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.
+ */
+
+package sun.java2d.metal;
+
+import sun.java2d.SunGraphics2D;
+import sun.java2d.SurfaceData;
+import sun.java2d.loops.CompositeType;
+import sun.java2d.pipe.BufferedBufImgOps;
+
+import java.awt.image.*;
+
+import static sun.java2d.metal.MTLContext.MTLContextCaps.CAPS_EXT_BIOP_SHADER;
+
+class MTLBufImgOps extends BufferedBufImgOps {
+
+    /**
+     * This method is called from MTLDrawImage.transformImage() only.  It
+     * validates the provided BufferedImageOp to determine whether the op
+     * is one that can be accelerated by the MTL pipeline.  If the operation
+     * cannot be completed for any reason, this method returns false;
+     * otherwise, the given BufferedImage is rendered to the destination
+     * using the provided BufferedImageOp and this method returns true.
+     */
+    static boolean renderImageWithOp(SunGraphics2D sg, BufferedImage img,
+                                     BufferedImageOp biop, int x, int y)
+    {
+        // Validate the provided BufferedImage (make sure it is one that
+        // is supported, and that its properties are acceleratable)
+        if (biop instanceof ConvolveOp) {
+            if (!isConvolveOpValid((ConvolveOp)biop)) {
+                return false;
+            }
+        } else if (biop instanceof RescaleOp) {
+            if (!isRescaleOpValid((RescaleOp)biop, img)) {
+                return false;
+            }
+        } else if (biop instanceof LookupOp) {
+            if (!isLookupOpValid((LookupOp)biop, img)) {
+                return false;
+            }
+        } else {
+            // No acceleration for other BufferedImageOps (yet)
+            return false;
+        }
+
+        SurfaceData dstData = sg.surfaceData;
+        if (!(dstData instanceof MTLSurfaceData) ||
+                (sg.interpolationType == AffineTransformOp.TYPE_BICUBIC) ||
+                (sg.compositeState > SunGraphics2D.COMP_ALPHA))
+        {
+            return false;
+        }
+
+        SurfaceData srcData =
+                dstData.getSourceSurfaceData(img, SunGraphics2D.TRANSFORM_ISIDENT,
+                        CompositeType.SrcOver, null);
+        if (!(srcData instanceof MTLSurfaceData)) {
+            // REMIND: this hack tries to ensure that we have a cached texture
+            srcData =
+                    dstData.getSourceSurfaceData(img, SunGraphics2D.TRANSFORM_ISIDENT,
+                            CompositeType.SrcOver, null);
+            if (!(srcData instanceof MTLSurfaceData)) {
+                return false;
+            }
+        }
+
+        // Verify that the source surface is actually a texture and
+        // that the operation is supported
+        MTLSurfaceData mtlSrc = (MTLSurfaceData)srcData;
+        MTLGraphicsConfig gc = mtlSrc.getMTLGraphicsConfig();
+        if (mtlSrc.getType() != MTLSurfaceData.TEXTURE ||
+                !gc.isCapPresent(CAPS_EXT_BIOP_SHADER))
+        {
+            return false;
+        }
+
+        int sw = img.getWidth();
+        int sh = img.getHeight();
+        MTLBlitLoops.IsoBlit(srcData, dstData,
+                img, biop,
+                sg.composite, sg.getCompClip(),
+                sg.transform, sg.interpolationType,
+                0, 0, sw, sh,
+                x, y, x+sw, y+sh,
+                true);
+
+        return true;
+    }
+}