1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.java2d.metal; 27 28 import sun.java2d.NullSurfaceData; 29 import sun.java2d.SurfaceData; 30 import sun.lwawt.LWWindowPeer; 31 import sun.lwawt.macosx.CFRetainedResource; 32 33 import java.awt.*; 34 35 public class MTLLayer extends CFRetainedResource { 36 37 private native long nativeCreateLayer(); 38 private static native void nativeSetScale(long layerPtr, double scale); 39 private static native void validate(long layerPtr, MTLSurfaceData cglsd); 40 41 private LWWindowPeer peer; 42 private int scale = 1; 43 44 private SurfaceData surfaceData; // represents intermediate buffer (texture) 45 46 public MTLLayer(LWWindowPeer peer) { 47 super(0, true); 48 49 setPtr(nativeCreateLayer()); 50 this.peer = peer; 51 } 52 53 public long getPointer() { 54 return ptr; 55 } 56 57 public Rectangle getBounds() { 58 return peer.getBounds(); 59 } 60 61 public GraphicsConfiguration getGraphicsConfiguration() { 62 return peer.getGraphicsConfiguration(); 63 } 64 65 public boolean isOpaque() { 66 return !peer.isTranslucent(); 67 } 68 69 public int getTransparency() { 70 return isOpaque() ? Transparency.OPAQUE : Transparency.TRANSLUCENT; 71 } 72 73 public Object getDestination() { 74 return peer.getTarget(); 75 } 76 77 public SurfaceData replaceSurfaceData() { 78 if (getBounds().isEmpty()) { 79 surfaceData = NullSurfaceData.theInstance; 80 return surfaceData; 81 } 82 83 // the layer redirects all painting to the buffer's graphics 84 // and blits the buffer to the layer surface (in drawInCGLContext callback) 85 MTLGraphicsConfig gc = (MTLGraphicsConfig)getGraphicsConfiguration(); 86 surfaceData = gc.createSurfaceData(this); 87 setScale(gc.getDevice().getScaleFactor()); 88 // the layer holds a reference to the buffer, which in 89 // turn has a reference back to this layer 90 if (surfaceData instanceof MTLSurfaceData) { 91 validate((MTLSurfaceData)surfaceData); 92 } 93 94 return surfaceData; 95 } 96 97 public SurfaceData getSurfaceData() { 98 return surfaceData; 99 } 100 101 public void validate(final MTLSurfaceData cglsd) { 102 MTLRenderQueue rq = MTLRenderQueue.getInstance(); 103 rq.lock(); 104 try { 105 execute(ptr -> validate(ptr, cglsd)); 106 } finally { 107 rq.unlock(); 108 } 109 } 110 111 @Override 112 public void dispose() { 113 // break the connection between the layer and the buffer 114 validate(null); 115 super.dispose(); 116 } 117 118 private void setScale(final int _scale) { 119 if (scale != _scale) { 120 scale = _scale; 121 execute(ptr -> nativeSetScale(ptr, scale)); 122 } 123 } 124 }