1 /* 2 * Copyright (c) 2003, 2014, 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.opengl; 27 28 import java.awt.*; 29 import java.awt.image.ColorModel; 30 import java.awt.image.Raster; 31 import sun.awt.SunHints; 32 import sun.awt.image.PixelConverter; 33 import sun.java2d.pipe.hw.AccelSurface; 34 import sun.java2d.SunGraphics2D; 35 import sun.java2d.SurfaceData; 36 import sun.java2d.SurfaceDataProxy; 37 import sun.java2d.loops.CompositeType; 38 import sun.java2d.loops.GraphicsPrimitive; 39 import sun.java2d.loops.MaskFill; 40 import sun.java2d.loops.SurfaceType; 41 import sun.java2d.pipe.ParallelogramPipe; 42 import sun.java2d.pipe.PixelToParallelogramConverter; 43 import sun.java2d.pipe.RenderBuffer; 44 import sun.java2d.pipe.TextPipe; 45 import static sun.java2d.pipe.BufferedOpCodes.*; 46 import static sun.java2d.opengl.OGLContext.OGLContextCaps.*; 47 48 /** 49 * This class describes an OpenGL "surface", that is, a region of pixels 50 * managed via OpenGL. An OGLSurfaceData can be tagged with one of three 51 * different SurfaceType objects for the purpose of registering loops, etc. 52 * This diagram shows the hierarchy of OGL SurfaceTypes: 53 * 54 * Any 55 * / \ 56 * OpenGLSurface OpenGLTexture 57 * | 58 * OpenGLSurfaceRTT 59 * 60 * OpenGLSurface 61 * This kind of surface can be rendered to using OpenGL APIs. It is also 62 * possible to copy an OpenGLSurface to another OpenGLSurface (or to itself). 63 * This is typically accomplished by calling MakeContextCurrent(dstSD, srcSD) 64 * and then calling glCopyPixels() (although there are other techniques to 65 * achieve the same goal). 66 * 67 * OpenGLTexture 68 * This kind of surface cannot be rendered to using OpenGL (in the same sense 69 * as in OpenGLSurface). However, it is possible to upload a region of pixels 70 * to an OpenGLTexture object via glTexSubImage2D(). One can also copy a 71 * surface of type OpenGLTexture to an OpenGLSurface by binding the texture 72 * to a quad and then rendering it to the destination surface (this process 73 * is known as "texture mapping"). 74 * 75 * OpenGLSurfaceRTT 76 * This kind of surface can be thought of as a sort of hybrid between 77 * OpenGLSurface and OpenGLTexture, in that one can render to this kind of 78 * surface as if it were of type OpenGLSurface, but the process of copying 79 * this kind of surface to another is more like an OpenGLTexture. (Note that 80 * "RTT" stands for "render-to-texture".) 81 * 82 * In addition to these SurfaceType variants, we have also defined some 83 * constants that describe in more detail the type of underlying OpenGL 84 * surface. This table helps explain the relationships between those 85 * "type" constants and their corresponding SurfaceType: 86 * 87 * OGL Type Corresponding SurfaceType 88 * -------- ------------------------- 89 * WINDOW OpenGLSurface 90 * PBUFFER OpenGLSurface 91 * TEXTURE OpenGLTexture 92 * FLIP_BACKBUFFER OpenGLSurface 93 * FBOBJECT OpenGLSurfaceRTT 94 */ 95 public abstract class OGLSurfaceData extends SurfaceData 96 implements AccelSurface { 97 98 /** 99 * OGL-specific surface types 100 * 101 * @see sun.java2d.pipe.hw.AccelSurface 102 */ 103 public static final int PBUFFER = RT_PLAIN; 104 public static final int FBOBJECT = RT_TEXTURE; 105 106 /** 107 * Pixel formats 108 */ 109 public static final int PF_INT_ARGB = 0; 110 public static final int PF_INT_ARGB_PRE = 1; 111 public static final int PF_INT_RGB = 2; 112 public static final int PF_INT_RGBX = 3; 113 public static final int PF_INT_BGR = 4; 114 public static final int PF_INT_BGRX = 5; 115 public static final int PF_USHORT_565_RGB = 6; 116 public static final int PF_USHORT_555_RGB = 7; 117 public static final int PF_USHORT_555_RGBX = 8; 118 public static final int PF_BYTE_GRAY = 9; 119 public static final int PF_USHORT_GRAY = 10; 120 public static final int PF_3BYTE_BGR = 11; 121 122 /** 123 * SurfaceTypes 124 */ 125 private static final String DESC_OPENGL_SURFACE = "OpenGL Surface"; 126 private static final String DESC_OPENGL_SURFACE_RTT = 127 "OpenGL Surface (render-to-texture)"; 128 private static final String DESC_OPENGL_TEXTURE = "OpenGL Texture"; 129 130 static final SurfaceType OpenGLSurface = 131 SurfaceType.Any.deriveSubType(DESC_OPENGL_SURFACE, 132 PixelConverter.ArgbPre.instance); 133 static final SurfaceType OpenGLSurfaceRTT = 134 OpenGLSurface.deriveSubType(DESC_OPENGL_SURFACE_RTT); 135 static final SurfaceType OpenGLTexture = 136 SurfaceType.Any.deriveSubType(DESC_OPENGL_TEXTURE); 137 138 /** This will be true if the fbobject system property has been enabled. */ 139 private static boolean isFBObjectEnabled; 140 141 /** This will be true if the lcdshader system property has been enabled.*/ 142 private static boolean isLCDShaderEnabled; 143 144 /** This will be true if the biopshader system property has been enabled.*/ 145 private static boolean isBIOpShaderEnabled; 146 147 /** This will be true if the gradshader system property has been enabled.*/ 148 private static boolean isGradShaderEnabled; 149 150 private OGLGraphicsConfig graphicsConfig; 151 protected int type; 152 // these fields are set from the native code when the surface is 153 // initialized 154 private int nativeWidth, nativeHeight; 155 156 protected static OGLRenderer oglRenderPipe; 157 protected static PixelToParallelogramConverter oglTxRenderPipe; 158 protected static ParallelogramPipe oglAAPgramPipe; 159 protected static OGLTextRenderer oglTextPipe; 160 protected static OGLDrawImage oglImagePipe; 161 162 protected native boolean initTexture(long pData, 163 boolean isOpaque, boolean texNonPow2, 164 boolean texRect, 165 int width, int height); 166 protected native boolean initFBObject(long pData, 167 boolean isOpaque, boolean texNonPow2, 168 boolean texRect, 169 int width, int height); 170 protected native boolean initFlipBackbuffer(long pData); 171 protected abstract boolean initPbuffer(long pData, long pConfigInfo, 172 boolean isOpaque, 173 int width, int height); 174 175 private native int getTextureTarget(long pData); 176 private native int getTextureID(long pData); 177 178 static { 179 if (!GraphicsEnvironment.isHeadless()) { 180 // fbobject currently enabled by default; use "false" to disable 181 String fbo = java.security.AccessController.doPrivileged( 182 new sun.security.action.GetPropertyAction( 183 "sun.java2d.opengl.fbobject")); 184 isFBObjectEnabled = !"false".equals(fbo); 185 186 // lcdshader currently enabled by default; use "false" to disable 187 String lcd = java.security.AccessController.doPrivileged( 188 new sun.security.action.GetPropertyAction( 189 "sun.java2d.opengl.lcdshader")); 190 isLCDShaderEnabled = !"false".equals(lcd); 191 192 // biopshader currently enabled by default; use "false" to disable 193 String biop = java.security.AccessController.doPrivileged( 194 new sun.security.action.GetPropertyAction( 195 "sun.java2d.opengl.biopshader")); 196 isBIOpShaderEnabled = !"false".equals(biop); 197 198 // gradshader currently enabled by default; use "false" to disable 199 String grad = java.security.AccessController.doPrivileged( 200 new sun.security.action.GetPropertyAction( 201 "sun.java2d.opengl.gradshader")); 202 isGradShaderEnabled = !"false".equals(grad); 203 204 OGLRenderQueue rq = OGLRenderQueue.getInstance(); 205 oglImagePipe = new OGLDrawImage(); 206 oglTextPipe = new OGLTextRenderer(rq); 207 oglRenderPipe = new OGLRenderer(rq); 208 if (GraphicsPrimitive.tracingEnabled()) { 209 oglTextPipe = oglTextPipe.traceWrap(); 210 //The wrapped oglRenderPipe will wrap the AA pipe as well... 211 //oglAAPgramPipe = oglRenderPipe.traceWrap(); 212 } 213 oglAAPgramPipe = oglRenderPipe.getAAParallelogramPipe(); 214 oglTxRenderPipe = 215 new PixelToParallelogramConverter(oglRenderPipe, 216 oglRenderPipe, 217 1.0, 0.25, true); 218 219 OGLBlitLoops.register(); 220 OGLMaskFill.register(); 221 OGLMaskBlit.register(); 222 } 223 } 224 225 protected OGLSurfaceData(OGLGraphicsConfig gc, 226 ColorModel cm, int type) 227 { 228 super(getCustomSurfaceType(type), cm); 229 this.graphicsConfig = gc; 230 this.type = type; 231 setBlitProxyKey(gc.getProxyKey()); 232 } 233 234 @Override 235 public SurfaceDataProxy makeProxyFor(SurfaceData srcData) { 236 return OGLSurfaceDataProxy.createProxy(srcData, graphicsConfig); 237 } 238 239 /** 240 * Returns the appropriate SurfaceType corresponding to the given OpenGL 241 * surface type constant (e.g. TEXTURE -> OpenGLTexture). 242 */ 243 private static SurfaceType getCustomSurfaceType(int oglType) { 244 switch (oglType) { 245 case TEXTURE: 246 return OpenGLTexture; 247 case FBOBJECT: 248 return OpenGLSurfaceRTT; 249 case PBUFFER: 250 default: 251 return OpenGLSurface; 252 } 253 } 254 255 /** 256 * Note: This should only be called from the QFT under the AWT lock. 257 * This method is kept separate from the initSurface() method below just 258 * to keep the code a bit cleaner. 259 */ 260 private void initSurfaceNow(int width, int height) { 261 boolean isOpaque = (getTransparency() == Transparency.OPAQUE); 262 boolean success = false; 263 264 switch (type) { 265 case PBUFFER: 266 success = initPbuffer(getNativeOps(), 267 graphicsConfig.getNativeConfigInfo(), 268 isOpaque, 269 width, height); 270 break; 271 272 case TEXTURE: 273 success = initTexture(getNativeOps(), 274 isOpaque, isTexNonPow2Available(), 275 isTexRectAvailable(), 276 width, height); 277 break; 278 279 case FBOBJECT: 280 success = initFBObject(getNativeOps(), 281 isOpaque, isTexNonPow2Available(), 282 isTexRectAvailable(), 283 width, height); 284 break; 285 286 case FLIP_BACKBUFFER: 287 success = initFlipBackbuffer(getNativeOps()); 288 break; 289 290 default: 291 break; 292 } 293 294 if (!success) { 295 throw new OutOfMemoryError("can't create offscreen surface"); 296 } 297 } 298 299 /** 300 * Initializes the appropriate OpenGL offscreen surface based on the value 301 * of the type parameter. If the surface creation fails for any reason, 302 * an OutOfMemoryError will be thrown. 303 */ 304 protected void initSurface(final int width, final int height) { 305 OGLRenderQueue rq = OGLRenderQueue.getInstance(); 306 rq.lock(); 307 try { 308 switch (type) { 309 case TEXTURE: 310 case PBUFFER: 311 case FBOBJECT: 312 // need to make sure the context is current before 313 // creating the texture (or pbuffer, or fbobject) 314 OGLContext.setScratchSurface(graphicsConfig); 315 break; 316 default: 317 break; 318 } 319 rq.flushAndInvokeNow(new Runnable() { 320 public void run() { 321 initSurfaceNow(width, height); 322 } 323 }); 324 } finally { 325 rq.unlock(); 326 } 327 } 328 329 /** 330 * Returns the OGLContext for the GraphicsConfig associated with this 331 * surface. 332 */ 333 public final OGLContext getContext() { 334 return graphicsConfig.getContext(); 335 } 336 337 /** 338 * Returns the OGLGraphicsConfig associated with this surface. 339 */ 340 final OGLGraphicsConfig getOGLGraphicsConfig() { 341 return graphicsConfig; 342 } 343 344 /** 345 * Returns one of the surface type constants defined above. 346 */ 347 public final int getType() { 348 return type; 349 } 350 351 /** 352 * If this surface is backed by a texture object, returns the target 353 * for that texture (either GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE_ARB). 354 * Otherwise, this method will return zero. 355 */ 356 public final int getTextureTarget() { 357 return getTextureTarget(getNativeOps()); 358 } 359 360 /** 361 * If this surface is backed by a texture object, returns the texture ID 362 * for that texture. 363 * Otherwise, this method will return zero. 364 */ 365 public final int getTextureID() { 366 return getTextureID(getNativeOps()); 367 } 368 369 /** 370 * Returns native resource of specified {@code resType} associated with 371 * this surface. 372 * 373 * Specifically, for {@code OGLSurfaceData} this method returns the 374 * the following: 375 * <pre> 376 * TEXTURE - texture id 377 * </pre> 378 * 379 * Note: the resource returned by this method is only valid on the rendering 380 * thread. 381 * 382 * @return native resource of specified type or 0L if 383 * such resource doesn't exist or can not be retrieved. 384 * @see sun.java2d.pipe.hw.AccelSurface#getNativeResource 385 */ 386 public long getNativeResource(int resType) { 387 if (resType == TEXTURE) { 388 return getTextureID(); 389 } 390 return 0L; 391 } 392 393 public Raster getRaster(int x, int y, int w, int h) { 394 throw new InternalError("not implemented yet"); 395 } 396 397 /** 398 * For now, we can only render LCD text if: 399 * - the fragment shader extension is available, and 400 * - the source color is opaque, and 401 * - blending is SrcOverNoEa or disabled 402 * 403 * Eventually, we could enhance the native OGL text rendering code 404 * and remove the above restrictions, but that would require significantly 405 * more code just to support a few uncommon cases. 406 */ 407 public boolean canRenderLCDText(SunGraphics2D sg2d) { 408 return 409 graphicsConfig.isCapPresent(CAPS_EXT_LCD_SHADER) && 410 sg2d.surfaceData.getTransparency() == Transparency.OPAQUE && 411 sg2d.paintState <= SunGraphics2D.PAINT_OPAQUECOLOR && 412 (sg2d.compositeState <= SunGraphics2D.COMP_ISCOPY || 413 (sg2d.compositeState <= SunGraphics2D.COMP_ALPHA && canHandleComposite(sg2d.composite))); 414 } 415 416 private boolean canHandleComposite(Composite c) { 417 if (c instanceof AlphaComposite) { 418 AlphaComposite ac = (AlphaComposite)c; 419 420 return ac.getRule() == AlphaComposite.SRC_OVER && ac.getAlpha() >= 1f; 421 } 422 return false; 423 } 424 425 public void validatePipe(SunGraphics2D sg2d) { 426 TextPipe textpipe; 427 boolean validated = false; 428 429 // OGLTextRenderer handles both AA and non-AA text, but 430 // only works with the following modes: 431 // (Note: For LCD text we only enter this code path if 432 // canRenderLCDText() has already validated that the mode is 433 // CompositeType.SrcNoEa (opaque color), which will be subsumed 434 // by the CompositeType.SrcNoEa (any color) test below.) 435 436 if (/* CompositeType.SrcNoEa (any color) */ 437 (sg2d.compositeState <= SunGraphics2D.COMP_ISCOPY && 438 sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR) || 439 440 /* CompositeType.SrcOver (any color) */ 441 (sg2d.compositeState == SunGraphics2D.COMP_ALPHA && 442 sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR && 443 (((AlphaComposite)sg2d.composite).getRule() == 444 AlphaComposite.SRC_OVER)) || 445 446 /* CompositeType.Xor (any color) */ 447 (sg2d.compositeState == SunGraphics2D.COMP_XOR && 448 sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR)) 449 { 450 textpipe = oglTextPipe; 451 } else { 452 // do this to initialize textpipe correctly; we will attempt 453 // to override the non-text pipes below 454 super.validatePipe(sg2d); 455 textpipe = sg2d.textpipe; 456 validated = true; 457 } 458 459 PixelToParallelogramConverter txPipe = null; 460 OGLRenderer nonTxPipe = null; 461 462 if (sg2d.antialiasHint != SunHints.INTVAL_ANTIALIAS_ON) { 463 if (sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR) { 464 if (sg2d.compositeState <= SunGraphics2D.COMP_XOR) { 465 txPipe = oglTxRenderPipe; 466 nonTxPipe = oglRenderPipe; 467 } 468 } else if (sg2d.compositeState <= SunGraphics2D.COMP_ALPHA) { 469 if (OGLPaints.isValid(sg2d)) { 470 txPipe = oglTxRenderPipe; 471 nonTxPipe = oglRenderPipe; 472 } 473 // custom paints handled by super.validatePipe() below 474 } 475 } else { 476 if (sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR) { 477 if (graphicsConfig.isCapPresent(CAPS_PS30) && 478 (sg2d.imageComp == CompositeType.SrcOverNoEa || 479 sg2d.imageComp == CompositeType.SrcOver)) 480 { 481 if (!validated) { 482 super.validatePipe(sg2d); 483 validated = true; 484 } 485 PixelToParallelogramConverter aaConverter = 486 new PixelToParallelogramConverter(sg2d.shapepipe, 487 oglAAPgramPipe, 488 1.0/8.0, 0.499, 489 false); 490 sg2d.drawpipe = aaConverter; 491 sg2d.fillpipe = aaConverter; 492 sg2d.shapepipe = aaConverter; 493 } else if (sg2d.compositeState == SunGraphics2D.COMP_XOR) { 494 // install the solid pipes when AA and XOR are both enabled 495 txPipe = oglTxRenderPipe; 496 nonTxPipe = oglRenderPipe; 497 } 498 } 499 // other cases handled by super.validatePipe() below 500 } 501 502 if (txPipe != null) { 503 if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) { 504 sg2d.drawpipe = txPipe; 505 sg2d.fillpipe = txPipe; 506 } else if (sg2d.strokeState != SunGraphics2D.STROKE_THIN) { 507 sg2d.drawpipe = txPipe; 508 sg2d.fillpipe = nonTxPipe; 509 } else { 510 sg2d.drawpipe = nonTxPipe; 511 sg2d.fillpipe = nonTxPipe; 512 } 513 // Note that we use the transforming pipe here because it 514 // will examine the shape and possibly perform an optimized 515 // operation if it can be simplified. The simplifications 516 // will be valid for all STROKE and TRANSFORM types. 517 sg2d.shapepipe = txPipe; 518 } else { 519 if (!validated) { 520 super.validatePipe(sg2d); 521 } 522 } 523 524 // install the text pipe based on our earlier decision 525 sg2d.textpipe = textpipe; 526 527 // always override the image pipe with the specialized OGL pipe 528 sg2d.imagepipe = oglImagePipe; 529 } 530 531 @Override 532 protected MaskFill getMaskFill(SunGraphics2D sg2d) { 533 if (sg2d.paintState > SunGraphics2D.PAINT_ALPHACOLOR) { 534 /* 535 * We can only accelerate non-Color MaskFill operations if 536 * all of the following conditions hold true: 537 * - there is an implementation for the given paintState 538 * - the current Paint can be accelerated for this destination 539 * - multitexturing is available (since we need to modulate 540 * the alpha mask texture with the paint texture) 541 * 542 * In all other cases, we return null, in which case the 543 * validation code will choose a more general software-based loop. 544 */ 545 if (!OGLPaints.isValid(sg2d) || 546 !graphicsConfig.isCapPresent(CAPS_MULTITEXTURE)) 547 { 548 return null; 549 } 550 } 551 return super.getMaskFill(sg2d); 552 } 553 554 public boolean copyArea(SunGraphics2D sg2d, 555 int x, int y, int w, int h, int dx, int dy) 556 { 557 if (sg2d.transformState < SunGraphics2D.TRANSFORM_TRANSLATESCALE && 558 sg2d.compositeState < SunGraphics2D.COMP_XOR) 559 { 560 x += sg2d.transX; 561 y += sg2d.transY; 562 563 oglRenderPipe.copyArea(sg2d, x, y, w, h, dx, dy); 564 565 return true; 566 } 567 return false; 568 } 569 570 public void flush() { 571 invalidate(); 572 OGLRenderQueue rq = OGLRenderQueue.getInstance(); 573 rq.lock(); 574 try { 575 // make sure we have a current context before 576 // disposing the native resources (e.g. texture object) 577 OGLContext.setScratchSurface(graphicsConfig); 578 579 RenderBuffer buf = rq.getBuffer(); 580 rq.ensureCapacityAndAlignment(12, 4); 581 buf.putInt(FLUSH_SURFACE); 582 buf.putLong(getNativeOps()); 583 584 // this call is expected to complete synchronously, so flush now 585 rq.flushNow(); 586 } finally { 587 rq.unlock(); 588 } 589 } 590 591 /** 592 * Disposes the native resources associated with the given OGLSurfaceData 593 * (referenced by the pData parameter). This method is invoked from 594 * the native Dispose() method from the Disposer thread when the 595 * Java-level OGLSurfaceData object is about to go away. Note that we 596 * also pass a reference to the native GLX/WGLGraphicsConfigInfo 597 * (pConfigInfo) for the purposes of making a context current. 598 */ 599 static void dispose(long pData, long pConfigInfo) { 600 OGLRenderQueue rq = OGLRenderQueue.getInstance(); 601 rq.lock(); 602 try { 603 // make sure we have a current context before 604 // disposing the native resources (e.g. texture object) 605 OGLContext.setScratchSurface(pConfigInfo); 606 607 RenderBuffer buf = rq.getBuffer(); 608 rq.ensureCapacityAndAlignment(12, 4); 609 buf.putInt(DISPOSE_SURFACE); 610 buf.putLong(pData); 611 612 // this call is expected to complete synchronously, so flush now 613 rq.flushNow(); 614 } finally { 615 rq.unlock(); 616 } 617 } 618 619 static void swapBuffers(long window) { 620 OGLRenderQueue rq = OGLRenderQueue.getInstance(); 621 rq.lock(); 622 try { 623 RenderBuffer buf = rq.getBuffer(); 624 rq.ensureCapacityAndAlignment(12, 4); 625 buf.putInt(SWAP_BUFFERS); 626 buf.putLong(window); 627 rq.flushNow(); 628 } finally { 629 rq.unlock(); 630 } 631 } 632 633 /** 634 * Returns true if OpenGL textures can have non-power-of-two dimensions 635 * when using the basic GL_TEXTURE_2D target. 636 */ 637 boolean isTexNonPow2Available() { 638 return graphicsConfig.isCapPresent(CAPS_TEXNONPOW2); 639 } 640 641 /** 642 * Returns true if OpenGL textures can have non-power-of-two dimensions 643 * when using the GL_TEXTURE_RECTANGLE_ARB target (only available when the 644 * GL_ARB_texture_rectangle extension is present). 645 */ 646 boolean isTexRectAvailable() { 647 return graphicsConfig.isCapPresent(CAPS_EXT_TEXRECT); 648 } 649 650 public Rectangle getNativeBounds() { 651 OGLRenderQueue rq = OGLRenderQueue.getInstance(); 652 rq.lock(); 653 try { 654 return new Rectangle(nativeWidth, nativeHeight); 655 } finally { 656 rq.unlock(); 657 } 658 } 659 660 /** 661 * Returns true if the surface is an on-screen window surface or 662 * a FBO texture attached to an on-screen CALayer. 663 * 664 * Needed by Mac OS X port. 665 */ 666 boolean isOnScreen() { 667 return getType() == WINDOW; 668 } 669 }