1 /* 2 * Copyright (c) 2008, 2016, 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 package sun.awt.windows; 26 27 import java.awt.AlphaComposite; 28 import java.awt.Color; 29 import java.awt.Graphics2D; 30 import java.awt.GraphicsConfiguration; 31 import java.awt.Image; 32 import java.awt.Window; 33 import java.awt.geom.AffineTransform; 34 import java.awt.image.BufferedImage; 35 import java.awt.image.DataBufferInt; 36 import java.awt.image.VolatileImage; 37 import java.security.AccessController; 38 import sun.awt.image.BufImgSurfaceData; 39 import sun.java2d.DestSurfaceProvider; 40 import sun.java2d.InvalidPipeException; 41 import sun.java2d.Surface; 42 import sun.java2d.pipe.RenderQueue; 43 import sun.java2d.pipe.BufferedContext; 44 import sun.java2d.pipe.hw.AccelGraphicsConfig; 45 import sun.java2d.pipe.hw.AccelSurface; 46 import sun.security.action.GetPropertyAction; 47 48 import static java.awt.image.VolatileImage.*; 49 import sun.java2d.pipe.Region; 50 import static sun.java2d.pipe.hw.AccelSurface.*; 51 import static sun.java2d.pipe.hw.ContextCapabilities.*; 52 53 /** 54 * This class handles the updates of the non-opaque windows. 55 * The window associated with the peer is updated either given an image or 56 * the window is repainted to an internal buffer which is then used to update 57 * the window. 58 * 59 * Note: this class does not attempt to be thread safe, it is expected to be 60 * called from a single thread (EDT). 61 */ 62 abstract class TranslucentWindowPainter { 63 64 protected Window window; 65 protected WWindowPeer peer; 66 67 // REMIND: we probably would want to remove this later 68 private static final boolean forceOpt = 69 Boolean.valueOf(AccessController.doPrivileged( 70 new GetPropertyAction("sun.java2d.twp.forceopt", "false"))); 71 private static final boolean forceSW = 72 Boolean.valueOf(AccessController.doPrivileged( 73 new GetPropertyAction("sun.java2d.twp.forcesw", "false"))); 74 75 /** 76 * Creates an instance of the painter for particular peer. 77 */ 78 public static TranslucentWindowPainter createInstance(WWindowPeer peer) { 79 GraphicsConfiguration gc = peer.getGraphicsConfiguration(); 80 if (!forceSW && gc instanceof AccelGraphicsConfig) { 81 String gcName = gc.getClass().getSimpleName(); 82 AccelGraphicsConfig agc = (AccelGraphicsConfig)gc; 83 // this is a heuristic to check that we have a pcix board 84 // (those have higher transfer rate from gpu to cpu) 85 if ((agc.getContextCapabilities().getCaps() & CAPS_PS30) != 0 || 86 forceOpt) 87 { 88 // we check for name to avoid loading classes unnecessarily if 89 // a pipeline isn't enabled 90 if (gcName.startsWith("D3D")) { 91 return new VIOptD3DWindowPainter(peer); 92 } else if (forceOpt && gcName.startsWith("WGL")) { 93 // on some boards (namely, ATI, even on pcix bus) ogl is 94 // very slow reading pixels back so for now it is disabled 95 // unless forced 96 return new VIOptWGLWindowPainter(peer); 97 } 98 } 99 } 100 return new BIWindowPainter(peer); 101 } 102 103 protected TranslucentWindowPainter(WWindowPeer peer) { 104 this.peer = peer; 105 this.window = (Window)peer.getTarget(); 106 } 107 108 /** 109 * Creates (if needed), clears (if requested) and returns the buffer 110 * for this painter. 111 */ 112 protected abstract Image getBackBuffer(boolean clear); 113 114 /** 115 * Updates the window associated with this painter with the contents 116 * of the passed image. 117 * The image can not be null, and NPE will be thrown if it is. 118 */ 119 protected abstract boolean update(Image bb); 120 121 /** 122 * Flushes the resources associated with the painter. They will be 123 * recreated as needed. 124 */ 125 public abstract void flush(); 126 127 /** 128 * Updates the window associated with the painter. 129 * 130 * @param repaint indicates if the window should be completely repainted 131 * to the back buffer using {@link java.awt.Window#paintAll} before update. 132 */ 133 public void updateWindow(boolean repaint) { 134 boolean done = false; 135 Image bb = getBackBuffer(repaint); 136 while (!done) { 137 if (repaint) { 138 Graphics2D g = (Graphics2D)bb.getGraphics(); 139 try { 140 window.paintAll(g); 141 } finally { 142 g.dispose(); 143 } 144 } 145 146 done = update(bb); 147 if (!done) { 148 repaint = true; 149 bb = getBackBuffer(true); 150 } 151 } 152 } 153 154 private static final Image clearImage(Image bb) { 155 Graphics2D g = (Graphics2D)bb.getGraphics(); 156 int w = bb.getWidth(null); 157 int h = bb.getHeight(null); 158 159 g.setComposite(AlphaComposite.Src); 160 g.setColor(new Color(0, 0, 0, 0)); 161 g.fillRect(0, 0, w, h); 162 163 return bb; 164 } 165 166 /** 167 * A painter which uses BufferedImage as the internal buffer. The window 168 * is painted into this buffer, and the contents then are uploaded 169 * into the layered window. 170 * 171 * This painter handles all types of images passed to its paint(Image) 172 * method (VI, BI, regular Images). 173 */ 174 private static class BIWindowPainter extends TranslucentWindowPainter { 175 private BufferedImage backBuffer; 176 177 protected BIWindowPainter(WWindowPeer peer) { 178 super(peer); 179 } 180 181 @Override 182 protected Image getBackBuffer(boolean clear) { 183 int w = window.getWidth(); 184 int h = window.getHeight(); 185 if (backBuffer == null || 186 backBuffer.getWidth() != w || 187 backBuffer.getHeight() != h) 188 { 189 flush(); 190 backBuffer = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE); 191 } 192 return clear ? (BufferedImage)clearImage(backBuffer) : backBuffer; 193 } 194 195 @Override 196 protected boolean update(Image bb) { 197 VolatileImage viBB = null; 198 199 if (bb instanceof BufferedImage) { 200 BufferedImage bi = (BufferedImage)bb; 201 int data[] = 202 ((DataBufferInt)bi.getRaster().getDataBuffer()).getData(); 203 peer.updateWindowImpl(data, bi.getWidth(), bi.getHeight()); 204 return true; 205 } else if (bb instanceof VolatileImage) { 206 viBB = (VolatileImage)bb; 207 if (bb instanceof DestSurfaceProvider) { 208 Surface s = ((DestSurfaceProvider)bb).getDestSurface(); 209 if (s instanceof BufImgSurfaceData) { 210 // the image is probably lost, upload the data from the 211 // backup surface to avoid creating another heap-based 212 // image (the parent's buffer) 213 int w = viBB.getWidth(); 214 int h = viBB.getHeight(); 215 BufImgSurfaceData bisd = (BufImgSurfaceData)s; 216 int data[] = ((DataBufferInt)bisd.getRaster(0,0,w,h). 217 getDataBuffer()).getData(); 218 peer.updateWindowImpl(data, w, h); 219 return true; 220 } 221 } 222 } 223 224 // copy the passed image into our own buffer, then upload 225 BufferedImage bi = (BufferedImage)clearImage(backBuffer); 226 227 int data[] = 228 ((DataBufferInt)bi.getRaster().getDataBuffer()).getData(); 229 peer.updateWindowImpl(data, bi.getWidth(), bi.getHeight()); 230 231 return (viBB != null ? !viBB.contentsLost() : true); 232 } 233 234 @Override 235 public void flush() { 236 if (backBuffer != null) { 237 backBuffer.flush(); 238 backBuffer = null; 239 } 240 } 241 } 242 243 /** 244 * A version of the painter which uses VolatileImage as the internal buffer. 245 * The window is painted into this VI and then copied into the parent's 246 * Java heap-based buffer (which is then uploaded to the layered window) 247 */ 248 private static class VIWindowPainter extends BIWindowPainter { 249 private VolatileImage viBB; 250 251 protected VIWindowPainter(WWindowPeer peer) { 252 super(peer); 253 } 254 255 @Override 256 protected Image getBackBuffer(boolean clear) { 257 int w = window.getWidth(); 258 int h = window.getHeight(); 259 GraphicsConfiguration gc = peer.getGraphicsConfiguration(); 260 261 if (viBB == null || viBB.getWidth() != w || viBB.getHeight() != h || 262 viBB.validate(gc) == IMAGE_INCOMPATIBLE) 263 { 264 flush(); 265 266 if (gc instanceof AccelGraphicsConfig) { 267 AccelGraphicsConfig agc = ((AccelGraphicsConfig)gc); 268 viBB = agc.createCompatibleVolatileImage(w, h, 269 TRANSLUCENT, 270 RT_PLAIN); 271 } 272 if (viBB == null) { 273 viBB = gc.createCompatibleVolatileImage(w, h, TRANSLUCENT); 274 } 275 viBB.validate(gc); 276 } 277 278 return clear ? clearImage(viBB) : viBB; 279 } 280 281 @Override 282 public void flush() { 283 if (viBB != null) { 284 viBB.flush(); 285 viBB = null; 286 } 287 } 288 } 289 290 /** 291 * Optimized version of hw painter. Uses VolatileImages for the 292 * buffer, and uses an optimized path to pull the data from those into 293 * the layered window, bypassing Java heap-based image. 294 */ 295 private abstract static class VIOptWindowPainter extends VIWindowPainter { 296 297 protected VIOptWindowPainter(WWindowPeer peer) { 298 super(peer); 299 } 300 301 protected abstract boolean updateWindowAccel(long psdops, int w, int h); 302 303 @Override 304 protected boolean update(Image bb) { 305 if (bb instanceof DestSurfaceProvider) { 306 Surface s = ((DestSurfaceProvider)bb).getDestSurface(); 307 if (s instanceof AccelSurface) { 308 AffineTransform tx = ((Graphics2D) bb.getGraphics()). 309 getTransform(); 310 final int w = Region. 311 clipScale(bb.getWidth(null), tx.getScaleX()); 312 final int h = Region. 313 clipScale(bb.getHeight(null), tx.getScaleY()); 314 final boolean arr[] = { false }; 315 final AccelSurface as = (AccelSurface)s; 316 RenderQueue rq = as.getContext().getRenderQueue(); 317 rq.lock(); 318 try { 319 BufferedContext.validateContext(as); 320 rq.flushAndInvokeNow(new Runnable() { 321 @Override 322 public void run() { 323 long psdops = as.getNativeOps(); 324 arr[0] = updateWindowAccel(psdops, w, h); 325 } 326 }); 327 } catch (InvalidPipeException e) { 328 // ignore, false will be returned 329 } finally { 330 rq.unlock(); 331 } 332 return arr[0]; 333 } 334 } 335 return super.update(bb); 336 } 337 } 338 339 private static class VIOptD3DWindowPainter extends VIOptWindowPainter { 340 341 protected VIOptD3DWindowPainter(WWindowPeer peer) { 342 super(peer); 343 } 344 345 @Override 346 protected boolean updateWindowAccel(long psdops, int w, int h) { 347 // note: this method is executed on the toolkit thread, no sync is 348 // necessary at the native level, and a pointer to peer can be used 349 return sun.java2d.d3d.D3DSurfaceData. 350 updateWindowAccelImpl(psdops, peer.getData(), w, h); 351 } 352 } 353 354 private static class VIOptWGLWindowPainter extends VIOptWindowPainter { 355 356 protected VIOptWGLWindowPainter(WWindowPeer peer) { 357 super(peer); 358 } 359 360 @Override 361 protected boolean updateWindowAccel(long psdops, int w, int h) { 362 // note: part of this method which deals with GDI will be on the 363 // toolkit thread 364 return sun.java2d.opengl.WGLSurfaceData. 365 updateWindowAccelImpl(psdops, peer, w, h); 366 } 367 } 368 }