HardwareRenderer.java revision 65924a3e56c2e7ac863f8e25e9f9a58b9db7d513
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18package android.view; 19 20import android.content.ComponentCallbacks2; 21import android.graphics.Paint; 22import android.graphics.Rect; 23import android.graphics.SurfaceTexture; 24import android.opengl.GLUtils; 25import android.opengl.ManagedEGLContext; 26import android.os.Handler; 27import android.os.Looper; 28import android.os.SystemClock; 29import android.os.SystemProperties; 30import android.util.Log; 31import com.google.android.gles_jni.EGLImpl; 32 33import javax.microedition.khronos.egl.EGL10; 34import javax.microedition.khronos.egl.EGL11; 35import javax.microedition.khronos.egl.EGLConfig; 36import javax.microedition.khronos.egl.EGLContext; 37import javax.microedition.khronos.egl.EGLDisplay; 38import javax.microedition.khronos.egl.EGLSurface; 39import javax.microedition.khronos.opengles.GL; 40 41import java.io.File; 42import java.io.PrintWriter; 43 44import static javax.microedition.khronos.egl.EGL10.*; 45 46/** 47 * Interface for rendering a ViewAncestor using hardware acceleration. 48 * 49 * @hide 50 */ 51public abstract class HardwareRenderer { 52 static final String LOG_TAG = "HardwareRenderer"; 53 54 /** 55 * Name of the file that holds the shaders cache. 56 */ 57 private static final String CACHE_PATH_SHADERS = "com.android.opengl.shaders_cache"; 58 59 /** 60 * Turn on to only refresh the parts of the screen that need updating. 61 * When turned on the property defined by {@link #RENDER_DIRTY_REGIONS_PROPERTY} 62 * must also have the value "true". 63 */ 64 public static final boolean RENDER_DIRTY_REGIONS = true; 65 66 /** 67 * System property used to enable or disable dirty regions invalidation. 68 * This property is only queried if {@link #RENDER_DIRTY_REGIONS} is true. 69 * The default value of this property is assumed to be true. 70 * 71 * Possible values: 72 * "true", to enable partial invalidates 73 * "false", to disable partial invalidates 74 */ 75 static final String RENDER_DIRTY_REGIONS_PROPERTY = "hwui.render_dirty_regions"; 76 77 /** 78 * System property used to enable or disable vsync. 79 * The default value of this property is assumed to be false. 80 * 81 * Possible values: 82 * "true", to disable vsync 83 * "false", to enable vsync 84 */ 85 static final String DISABLE_VSYNC_PROPERTY = "hwui.disable_vsync"; 86 87 /** 88 * System property used to enable or disable hardware rendering profiling. 89 * The default value of this property is assumed to be false. 90 * 91 * When profiling is enabled, the adb shell dumpsys gfxinfo command will 92 * output extra information about the time taken to execute by the last 93 * frames. 94 * 95 * Possible values: 96 * "true", to enable profiling 97 * "false", to disable profiling 98 */ 99 static final String PROFILE_PROPERTY = "hwui.profile"; 100 101 /** 102 * System property used to specify the number of frames to be used 103 * when doing hardware rendering profiling. 104 * The default value of this property is #PROFILE_MAX_FRAMES. 105 * 106 * When profiling is enabled, the adb shell dumpsys gfxinfo command will 107 * output extra information about the time taken to execute by the last 108 * frames. 109 * 110 * Possible values: 111 * "60", to set the limit of frames to 60 112 */ 113 static final String PROFILE_MAXFRAMES_PROPERTY = "hwui.profile.maxframes"; 114 115 /** 116 * System property used to debug EGL configuration choice. 117 * 118 * Possible values: 119 * "choice", print the chosen configuration only 120 * "all", print all possible configurations 121 */ 122 static final String PRINT_CONFIG_PROPERTY = "hwui.print_config"; 123 124 /** 125 * Turn on to draw dirty regions every other frame. 126 * 127 * Possible values: 128 * "true", to enable dirty regions debugging 129 * "false", to disable dirty regions debugging 130 */ 131 static final String DEBUG_DIRTY_REGIONS_PROPERTY = "hwui.debug_dirty_regions"; 132 133 /** 134 * A process can set this flag to false to prevent the use of hardware 135 * rendering. 136 * 137 * @hide 138 */ 139 public static boolean sRendererDisabled = false; 140 141 /** 142 * Further hardware renderer disabling for the system process. 143 * 144 * @hide 145 */ 146 public static boolean sSystemRendererDisabled = false; 147 148 /** 149 * Number of frames to profile. 150 */ 151 private static final int PROFILE_MAX_FRAMES = 64; 152 153 /** 154 * Number of floats per profiled frame. 155 */ 156 private static final int PROFILE_FRAME_DATA_COUNT = 3; 157 158 private boolean mEnabled; 159 private boolean mRequested = true; 160 161 /** 162 * Invoke this method to disable hardware rendering in the current process. 163 * 164 * @hide 165 */ 166 public static void disable(boolean system) { 167 sRendererDisabled = true; 168 if (system) { 169 sSystemRendererDisabled = true; 170 } 171 } 172 173 /** 174 * Indicates whether hardware acceleration is available under any form for 175 * the view hierarchy. 176 * 177 * @return True if the view hierarchy can potentially be hardware accelerated, 178 * false otherwise 179 */ 180 public static boolean isAvailable() { 181 return GLES20Canvas.isAvailable(); 182 } 183 184 /** 185 * Destroys the hardware rendering context. 186 * 187 * @param full If true, destroys all associated resources. 188 */ 189 abstract void destroy(boolean full); 190 191 /** 192 * Initializes the hardware renderer for the specified surface. 193 * 194 * @param holder The holder for the surface to hardware accelerate. 195 * 196 * @return True if the initialization was successful, false otherwise. 197 */ 198 abstract boolean initialize(SurfaceHolder holder) throws Surface.OutOfResourcesException; 199 200 /** 201 * Updates the hardware renderer for the specified surface. 202 * 203 * @param holder The holder for the surface to hardware accelerate 204 */ 205 abstract void updateSurface(SurfaceHolder holder) throws Surface.OutOfResourcesException; 206 207 /** 208 * Destroys the layers used by the specified view hierarchy. 209 * 210 * @param view The root of the view hierarchy 211 */ 212 abstract void destroyLayers(View view); 213 214 /** 215 * Destroys all hardware rendering resources associated with the specified 216 * view hierarchy. 217 * 218 * @param view The root of the view hierarchy 219 */ 220 abstract void destroyHardwareResources(View view); 221 222 /** 223 * This method should be invoked whenever the current hardware renderer 224 * context should be reset. 225 * 226 * @param holder The holder for the surface to hardware accelerate 227 */ 228 abstract void invalidate(SurfaceHolder holder); 229 230 /** 231 * This method should be invoked to ensure the hardware renderer is in 232 * valid state (for instance, to ensure the correct EGL context is bound 233 * to the current thread.) 234 * 235 * @return true if the renderer is now valid, false otherwise 236 */ 237 abstract boolean validate(); 238 239 /** 240 * Setup the hardware renderer for drawing. This is called whenever the 241 * size of the target surface changes or when the surface is first created. 242 * 243 * @param width Width of the drawing surface. 244 * @param height Height of the drawing surface. 245 */ 246 abstract void setup(int width, int height); 247 248 /** 249 * Gets the current width of the surface. This is the width that the surface 250 * was last set to in a call to {@link #setup(int, int)}. 251 * 252 * @return the current width of the surface 253 */ 254 abstract int getWidth(); 255 256 /** 257 * Gets the current height of the surface. This is the height that the surface 258 * was last set to in a call to {@link #setup(int, int)}. 259 * 260 * @return the current width of the surface 261 */ 262 abstract int getHeight(); 263 264 /** 265 * Gets the current canvas associated with this HardwareRenderer. 266 * 267 * @return the current HardwareCanvas 268 */ 269 abstract HardwareCanvas getCanvas(); 270 271 /** 272 * Outputs extra debugging information in the specified file descriptor. 273 * @param pw 274 */ 275 abstract void dumpGfxInfo(PrintWriter pw); 276 277 /** 278 * Outputs the total number of frames rendered (used for fps calculations) 279 * 280 * @return the number of frames rendered 281 */ 282 abstract long getFrameCount(); 283 284 /** 285 * Sets the directory to use as a persistent storage for hardware rendering 286 * resources. 287 * 288 * @param cacheDir A directory the current process can write to 289 */ 290 public static void setupDiskCache(File cacheDir) { 291 nSetupShadersDiskCache(new File(cacheDir, CACHE_PATH_SHADERS).getAbsolutePath()); 292 } 293 294 private static native void nSetupShadersDiskCache(String cacheFile); 295 296 /** 297 * Notifies EGL that the frame is about to be rendered. 298 * @param size 299 */ 300 private static void beginFrame(int[] size) { 301 nBeginFrame(size); 302 } 303 304 private static native void nBeginFrame(int[] size); 305 306 /** 307 * Preserves the back buffer of the current surface after a buffer swap. 308 * Calling this method sets the EGL_SWAP_BEHAVIOR attribute of the current 309 * surface to EGL_BUFFER_PRESERVED. Calling this method requires an EGL 310 * config that supports EGL_SWAP_BEHAVIOR_PRESERVED_BIT. 311 * 312 * @return True if the swap behavior was successfully changed, 313 * false otherwise. 314 */ 315 static boolean preserveBackBuffer() { 316 return nPreserveBackBuffer(); 317 } 318 319 private static native boolean nPreserveBackBuffer(); 320 321 /** 322 * Indicates whether the current surface preserves its back buffer 323 * after a buffer swap. 324 * 325 * @return True, if the surface's EGL_SWAP_BEHAVIOR is EGL_BUFFER_PRESERVED, 326 * false otherwise 327 */ 328 static boolean isBackBufferPreserved() { 329 return nIsBackBufferPreserved(); 330 } 331 332 private static native boolean nIsBackBufferPreserved(); 333 334 /** 335 * Disables v-sync. For performance testing only. 336 */ 337 static void disableVsync() { 338 nDisableVsync(); 339 } 340 341 private static native void nDisableVsync(); 342 343 /** 344 * Interface used to receive callbacks whenever a view is drawn by 345 * a hardware renderer instance. 346 */ 347 interface HardwareDrawCallbacks { 348 /** 349 * Invoked before a view is drawn by a hardware renderer. 350 * 351 * @param canvas The Canvas used to render the view. 352 */ 353 void onHardwarePreDraw(HardwareCanvas canvas); 354 355 /** 356 * Invoked after a view is drawn by a hardware renderer. 357 * 358 * @param canvas The Canvas used to render the view. 359 */ 360 void onHardwarePostDraw(HardwareCanvas canvas); 361 } 362 363 /** 364 * Draws the specified view. 365 * 366 * @param view The view to draw. 367 * @param attachInfo AttachInfo tied to the specified view. 368 * @param callbacks Callbacks invoked when drawing happens. 369 * @param dirty The dirty rectangle to update, can be null. 370 * 371 * @return true if the dirty rect was ignored, false otherwise 372 */ 373 abstract boolean draw(View view, View.AttachInfo attachInfo, HardwareDrawCallbacks callbacks, 374 Rect dirty); 375 376 /** 377 * Creates a new display list that can be used to record batches of 378 * drawing operations. 379 * 380 * @param name The name of the display list, used for debugging purpose. 381 * May be null 382 * 383 * @return A new display list. 384 */ 385 public abstract DisplayList createDisplayList(String name); 386 387 /** 388 * Creates a new hardware layer. A hardware layer built by calling this 389 * method will be treated as a texture layer, instead of as a render target. 390 * 391 * @param isOpaque Whether the layer should be opaque or not 392 * 393 * @return A hardware layer 394 */ 395 abstract HardwareLayer createHardwareLayer(boolean isOpaque); 396 397 /** 398 * Creates a new hardware layer. 399 * 400 * @param width The minimum width of the layer 401 * @param height The minimum height of the layer 402 * @param isOpaque Whether the layer should be opaque or not 403 * 404 * @return A hardware layer 405 */ 406 abstract HardwareLayer createHardwareLayer(int width, int height, boolean isOpaque); 407 408 /** 409 * Creates a new {@link SurfaceTexture} that can be used to render into the 410 * specified hardware layer. 411 * 412 * 413 * @param layer The layer to render into using a {@link android.graphics.SurfaceTexture} 414 * 415 * @return A {@link SurfaceTexture} 416 */ 417 abstract SurfaceTexture createSurfaceTexture(HardwareLayer layer); 418 419 /** 420 * Initializes the hardware renderer for the specified surface and setup the 421 * renderer for drawing, if needed. This is invoked when the ViewAncestor has 422 * potentially lost the hardware renderer. The hardware renderer should be 423 * reinitialized and setup when the render {@link #isRequested()} and 424 * {@link #isEnabled()}. 425 * 426 * @param width The width of the drawing surface. 427 * @param height The height of the drawing surface. 428 * @param holder The target surface 429 */ 430 void initializeIfNeeded(int width, int height, SurfaceHolder holder) 431 throws Surface.OutOfResourcesException { 432 if (isRequested()) { 433 // We lost the gl context, so recreate it. 434 if (!isEnabled()) { 435 if (initialize(holder)) { 436 setup(width, height); 437 } 438 } 439 } 440 } 441 442 /** 443 * Creates a hardware renderer using OpenGL. 444 * 445 * @param glVersion The version of OpenGL to use (1 for OpenGL 1, 11 for OpenGL 1.1, etc.) 446 * @param translucent True if the surface is translucent, false otherwise 447 * 448 * @return A hardware renderer backed by OpenGL. 449 */ 450 static HardwareRenderer createGlRenderer(int glVersion, boolean translucent) { 451 switch (glVersion) { 452 case 2: 453 return Gl20Renderer.create(translucent); 454 } 455 throw new IllegalArgumentException("Unknown GL version: " + glVersion); 456 } 457 458 /** 459 * Invoke this method when the system is running out of memory. This 460 * method will attempt to recover as much memory as possible, based on 461 * the specified hint. 462 * 463 * @param level Hint about the amount of memory that should be trimmed, 464 * see {@link android.content.ComponentCallbacks} 465 */ 466 static void trimMemory(int level) { 467 Gl20Renderer.trimMemory(level); 468 } 469 470 /** 471 * Indicates whether hardware acceleration is currently enabled. 472 * 473 * @return True if hardware acceleration is in use, false otherwise. 474 */ 475 boolean isEnabled() { 476 return mEnabled; 477 } 478 479 /** 480 * Indicates whether hardware acceleration is currently enabled. 481 * 482 * @param enabled True if the hardware renderer is in use, false otherwise. 483 */ 484 void setEnabled(boolean enabled) { 485 mEnabled = enabled; 486 } 487 488 /** 489 * Indicates whether hardware acceleration is currently request but not 490 * necessarily enabled yet. 491 * 492 * @return True if requested, false otherwise. 493 */ 494 boolean isRequested() { 495 return mRequested; 496 } 497 498 /** 499 * Indicates whether hardware acceleration is currently requested but not 500 * necessarily enabled yet. 501 * 502 * @return True to request hardware acceleration, false otherwise. 503 */ 504 void setRequested(boolean requested) { 505 mRequested = requested; 506 } 507 508 @SuppressWarnings({"deprecation"}) 509 static abstract class GlRenderer extends HardwareRenderer { 510 // These values are not exposed in our EGL APIs 511 static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098; 512 static final int EGL_OPENGL_ES2_BIT = 4; 513 static final int EGL_SURFACE_TYPE = 0x3033; 514 static final int EGL_SWAP_BEHAVIOR_PRESERVED_BIT = 0x0400; 515 516 static final int SURFACE_STATE_ERROR = 0; 517 static final int SURFACE_STATE_SUCCESS = 1; 518 static final int SURFACE_STATE_UPDATED = 2; 519 520 static final int FUNCTOR_PROCESS_DELAY = 4; 521 522 static EGL10 sEgl; 523 static EGLDisplay sEglDisplay; 524 static EGLConfig sEglConfig; 525 static final Object[] sEglLock = new Object[0]; 526 int mWidth = -1, mHeight = -1; 527 528 static final ThreadLocal<ManagedEGLContext> sEglContextStorage 529 = new ThreadLocal<ManagedEGLContext>(); 530 531 EGLContext mEglContext; 532 Thread mEglThread; 533 534 EGLSurface mEglSurface; 535 536 GL mGl; 537 HardwareCanvas mCanvas; 538 539 long mFrameCount; 540 Paint mDebugPaint; 541 542 static boolean sDirtyRegions; 543 static final boolean sDirtyRegionsRequested; 544 static { 545 String dirtyProperty = SystemProperties.get(RENDER_DIRTY_REGIONS_PROPERTY, "true"); 546 //noinspection PointlessBooleanExpression,ConstantConditions 547 sDirtyRegions = RENDER_DIRTY_REGIONS && "true".equalsIgnoreCase(dirtyProperty); 548 sDirtyRegionsRequested = sDirtyRegions; 549 } 550 551 boolean mDirtyRegionsEnabled; 552 boolean mUpdateDirtyRegions; 553 554 final boolean mVsyncDisabled; 555 556 final boolean mProfileEnabled; 557 final float[] mProfileData; 558 int mProfileCurrentFrame = -PROFILE_FRAME_DATA_COUNT; 559 560 final boolean mDebugDirtyRegions; 561 562 final int mGlVersion; 563 final boolean mTranslucent; 564 565 private boolean mDestroyed; 566 567 private final Rect mRedrawClip = new Rect(); 568 569 private final int[] mSurfaceSize = new int[2]; 570 private final FunctorsRunnable mFunctorsRunnable = new FunctorsRunnable(); 571 572 GlRenderer(int glVersion, boolean translucent) { 573 mGlVersion = glVersion; 574 mTranslucent = translucent; 575 576 String property; 577 578 property = SystemProperties.get(DISABLE_VSYNC_PROPERTY, "false"); 579 mVsyncDisabled = "true".equalsIgnoreCase(property); 580 if (mVsyncDisabled) { 581 Log.d(LOG_TAG, "Disabling v-sync"); 582 } 583 584 //noinspection PointlessBooleanExpression,ConstantConditions 585 if (!ViewDebug.DEBUG_LATENCY) { 586 property = SystemProperties.get(PROFILE_PROPERTY, "false"); 587 mProfileEnabled = "true".equalsIgnoreCase(property); 588 if (mProfileEnabled) { 589 Log.d(LOG_TAG, "Profiling hardware renderer"); 590 } 591 } else { 592 mProfileEnabled = true; 593 } 594 595 if (mProfileEnabled) { 596 property = SystemProperties.get(PROFILE_MAXFRAMES_PROPERTY, 597 Integer.toString(PROFILE_MAX_FRAMES)); 598 int maxProfileFrames = Integer.valueOf(property); 599 mProfileData = new float[maxProfileFrames * PROFILE_FRAME_DATA_COUNT]; 600 for (int i = 0; i < mProfileData.length; i += PROFILE_FRAME_DATA_COUNT) { 601 mProfileData[i] = mProfileData[i + 1] = mProfileData[i + 2] = -1; 602 } 603 } else { 604 mProfileData = null; 605 } 606 607 property = SystemProperties.get(DEBUG_DIRTY_REGIONS_PROPERTY, "false"); 608 mDebugDirtyRegions = "true".equalsIgnoreCase(property); 609 if (mDebugDirtyRegions) { 610 Log.d(LOG_TAG, "Debugging dirty regions"); 611 } 612 } 613 614 @Override 615 void dumpGfxInfo(PrintWriter pw) { 616 if (mProfileEnabled) { 617 pw.printf("\n\tDraw\tProcess\tExecute\n"); 618 for (int i = 0; i < mProfileData.length; i += PROFILE_FRAME_DATA_COUNT) { 619 if (mProfileData[i] < 0) { 620 break; 621 } 622 pw.printf("\t%3.2f\t%3.2f\t%3.2f\n", mProfileData[i], mProfileData[i + 1], 623 mProfileData[i + 2]); 624 mProfileData[i] = mProfileData[i + 1] = mProfileData[i + 2] = -1; 625 } 626 mProfileCurrentFrame = mProfileData.length; 627 } 628 } 629 630 @Override 631 long getFrameCount() { 632 return mFrameCount; 633 } 634 635 /** 636 * Indicates whether this renderer instance can track and update dirty regions. 637 */ 638 boolean hasDirtyRegions() { 639 return mDirtyRegionsEnabled; 640 } 641 642 /** 643 * Checks for OpenGL errors. If an error has occured, {@link #destroy(boolean)} 644 * is invoked and the requested flag is turned off. The error code is 645 * also logged as a warning. 646 */ 647 void checkEglErrors() { 648 if (isEnabled()) { 649 int error = sEgl.eglGetError(); 650 if (error != EGL_SUCCESS) { 651 // something bad has happened revert to 652 // normal rendering. 653 Log.w(LOG_TAG, "EGL error: " + GLUtils.getEGLErrorString(error)); 654 fallback(error != EGL11.EGL_CONTEXT_LOST); 655 } 656 } 657 } 658 659 private void fallback(boolean fallback) { 660 destroy(true); 661 if (fallback) { 662 // we'll try again if it was context lost 663 setRequested(false); 664 Log.w(LOG_TAG, "Mountain View, we've had a problem here. " 665 + "Switching back to software rendering."); 666 } 667 } 668 669 @Override 670 boolean initialize(SurfaceHolder holder) throws Surface.OutOfResourcesException { 671 if (isRequested() && !isEnabled()) { 672 initializeEgl(); 673 mGl = createEglSurface(holder); 674 mDestroyed = false; 675 676 if (mGl != null) { 677 int err = sEgl.eglGetError(); 678 if (err != EGL_SUCCESS) { 679 destroy(true); 680 setRequested(false); 681 } else { 682 if (mCanvas == null) { 683 mCanvas = createCanvas(); 684 } 685 if (mCanvas != null) { 686 setEnabled(true); 687 } else { 688 Log.w(LOG_TAG, "Hardware accelerated Canvas could not be created"); 689 } 690 } 691 692 return mCanvas != null; 693 } 694 } 695 return false; 696 } 697 698 @Override 699 void updateSurface(SurfaceHolder holder) throws Surface.OutOfResourcesException { 700 if (isRequested() && isEnabled()) { 701 createEglSurface(holder); 702 } 703 } 704 705 abstract HardwareCanvas createCanvas(); 706 707 abstract int[] getConfig(boolean dirtyRegions); 708 709 void initializeEgl() { 710 synchronized (sEglLock) { 711 if (sEgl == null && sEglConfig == null) { 712 sEgl = (EGL10) EGLContext.getEGL(); 713 714 // Get to the default display. 715 sEglDisplay = sEgl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 716 717 if (sEglDisplay == EGL_NO_DISPLAY) { 718 throw new RuntimeException("eglGetDisplay failed " 719 + GLUtils.getEGLErrorString(sEgl.eglGetError())); 720 } 721 722 // We can now initialize EGL for that display 723 int[] version = new int[2]; 724 if (!sEgl.eglInitialize(sEglDisplay, version)) { 725 throw new RuntimeException("eglInitialize failed " + 726 GLUtils.getEGLErrorString(sEgl.eglGetError())); 727 } 728 729 sEglConfig = chooseEglConfig(); 730 if (sEglConfig == null) { 731 // We tried to use EGL_SWAP_BEHAVIOR_PRESERVED_BIT, try again without 732 if (sDirtyRegions) { 733 sDirtyRegions = false; 734 sEglConfig = chooseEglConfig(); 735 if (sEglConfig == null) { 736 throw new RuntimeException("eglConfig not initialized"); 737 } 738 } else { 739 throw new RuntimeException("eglConfig not initialized"); 740 } 741 } 742 } 743 } 744 745 ManagedEGLContext managedContext = sEglContextStorage.get(); 746 mEglContext = managedContext != null ? managedContext.getContext() : null; 747 mEglThread = Thread.currentThread(); 748 749 if (mEglContext == null) { 750 mEglContext = createContext(sEgl, sEglDisplay, sEglConfig); 751 sEglContextStorage.set(createManagedContext(mEglContext)); 752 } 753 } 754 755 abstract ManagedEGLContext createManagedContext(EGLContext eglContext); 756 757 private EGLConfig chooseEglConfig() { 758 EGLConfig[] configs = new EGLConfig[1]; 759 int[] configsCount = new int[1]; 760 int[] configSpec = getConfig(sDirtyRegions); 761 762 // Debug 763 final String debug = SystemProperties.get(PRINT_CONFIG_PROPERTY, ""); 764 if ("all".equalsIgnoreCase(debug)) { 765 sEgl.eglChooseConfig(sEglDisplay, configSpec, null, 0, configsCount); 766 767 EGLConfig[] debugConfigs = new EGLConfig[configsCount[0]]; 768 sEgl.eglChooseConfig(sEglDisplay, configSpec, debugConfigs, 769 configsCount[0], configsCount); 770 771 for (EGLConfig config : debugConfigs) { 772 printConfig(config); 773 } 774 } 775 776 if (!sEgl.eglChooseConfig(sEglDisplay, configSpec, configs, 1, configsCount)) { 777 throw new IllegalArgumentException("eglChooseConfig failed " + 778 GLUtils.getEGLErrorString(sEgl.eglGetError())); 779 } else if (configsCount[0] > 0) { 780 if ("choice".equalsIgnoreCase(debug)) { 781 printConfig(configs[0]); 782 } 783 return configs[0]; 784 } 785 786 return null; 787 } 788 789 private static void printConfig(EGLConfig config) { 790 int[] value = new int[1]; 791 792 Log.d(LOG_TAG, "EGL configuration " + config + ":"); 793 794 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_RED_SIZE, value); 795 Log.d(LOG_TAG, " RED_SIZE = " + value[0]); 796 797 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_GREEN_SIZE, value); 798 Log.d(LOG_TAG, " GREEN_SIZE = " + value[0]); 799 800 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_BLUE_SIZE, value); 801 Log.d(LOG_TAG, " BLUE_SIZE = " + value[0]); 802 803 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_ALPHA_SIZE, value); 804 Log.d(LOG_TAG, " ALPHA_SIZE = " + value[0]); 805 806 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_DEPTH_SIZE, value); 807 Log.d(LOG_TAG, " DEPTH_SIZE = " + value[0]); 808 809 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_STENCIL_SIZE, value); 810 Log.d(LOG_TAG, " STENCIL_SIZE = " + value[0]); 811 812 sEgl.eglGetConfigAttrib(sEglDisplay, config, EGL_SURFACE_TYPE, value); 813 Log.d(LOG_TAG, " SURFACE_TYPE = 0x" + Integer.toHexString(value[0])); 814 } 815 816 GL createEglSurface(SurfaceHolder holder) throws Surface.OutOfResourcesException { 817 // Check preconditions. 818 if (sEgl == null) { 819 throw new RuntimeException("egl not initialized"); 820 } 821 if (sEglDisplay == null) { 822 throw new RuntimeException("eglDisplay not initialized"); 823 } 824 if (sEglConfig == null) { 825 throw new RuntimeException("eglConfig not initialized"); 826 } 827 if (Thread.currentThread() != mEglThread) { 828 throw new IllegalStateException("HardwareRenderer cannot be used " 829 + "from multiple threads"); 830 } 831 832 // In case we need to destroy an existing surface 833 destroySurface(); 834 835 // Create an EGL surface we can render into. 836 if (!createSurface(holder)) { 837 return null; 838 } 839 840 /* 841 * Before we can issue GL commands, we need to make sure 842 * the context is current and bound to a surface. 843 */ 844 if (!sEgl.eglMakeCurrent(sEglDisplay, mEglSurface, mEglSurface, mEglContext)) { 845 throw new Surface.OutOfResourcesException("eglMakeCurrent failed " 846 + GLUtils.getEGLErrorString(sEgl.eglGetError())); 847 } 848 849 initCaches(); 850 851 enableDirtyRegions(); 852 853 return mEglContext.getGL(); 854 } 855 856 private void enableDirtyRegions() { 857 // If mDirtyRegions is set, this means we have an EGL configuration 858 // with EGL_SWAP_BEHAVIOR_PRESERVED_BIT set 859 if (sDirtyRegions) { 860 if (!(mDirtyRegionsEnabled = preserveBackBuffer())) { 861 Log.w(LOG_TAG, "Backbuffer cannot be preserved"); 862 } 863 } else if (sDirtyRegionsRequested) { 864 // If mDirtyRegions is not set, our EGL configuration does not 865 // have EGL_SWAP_BEHAVIOR_PRESERVED_BIT; however, the default 866 // swap behavior might be EGL_BUFFER_PRESERVED, which means we 867 // want to set mDirtyRegions. We try to do this only if dirty 868 // regions were initially requested as part of the device 869 // configuration (see RENDER_DIRTY_REGIONS) 870 mDirtyRegionsEnabled = isBackBufferPreserved(); 871 } 872 } 873 874 abstract void initCaches(); 875 876 EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) { 877 int[] attribs = { EGL_CONTEXT_CLIENT_VERSION, mGlVersion, EGL_NONE }; 878 879 return egl.eglCreateContext(eglDisplay, eglConfig, EGL_NO_CONTEXT, 880 mGlVersion != 0 ? attribs : null); 881 } 882 883 @Override 884 void destroy(boolean full) { 885 if (full && mCanvas != null) { 886 mCanvas = null; 887 } 888 889 if (!isEnabled() || mDestroyed) { 890 setEnabled(false); 891 return; 892 } 893 894 destroySurface(); 895 setEnabled(false); 896 897 mDestroyed = true; 898 mGl = null; 899 } 900 901 void destroySurface() { 902 if (mEglSurface != null && mEglSurface != EGL_NO_SURFACE) { 903 sEgl.eglMakeCurrent(sEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 904 sEgl.eglDestroySurface(sEglDisplay, mEglSurface); 905 mEglSurface = null; 906 } 907 } 908 909 @Override 910 void invalidate(SurfaceHolder holder) { 911 // Cancels any existing buffer to ensure we'll get a buffer 912 // of the right size before we call eglSwapBuffers 913 sEgl.eglMakeCurrent(sEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 914 915 if (mEglSurface != null && mEglSurface != EGL_NO_SURFACE) { 916 sEgl.eglDestroySurface(sEglDisplay, mEglSurface); 917 mEglSurface = null; 918 setEnabled(false); 919 } 920 921 if (holder.getSurface().isValid()) { 922 if (!createSurface(holder)) { 923 return; 924 } 925 926 mUpdateDirtyRegions = true; 927 928 if (mCanvas != null) { 929 setEnabled(true); 930 } 931 } 932 } 933 934 private boolean createSurface(SurfaceHolder holder) { 935 mEglSurface = sEgl.eglCreateWindowSurface(sEglDisplay, sEglConfig, holder, null); 936 937 if (mEglSurface == null || mEglSurface == EGL_NO_SURFACE) { 938 int error = sEgl.eglGetError(); 939 if (error == EGL_BAD_NATIVE_WINDOW) { 940 Log.e(LOG_TAG, "createWindowSurface returned EGL_BAD_NATIVE_WINDOW."); 941 return false; 942 } 943 throw new RuntimeException("createWindowSurface failed " 944 + GLUtils.getEGLErrorString(error)); 945 } 946 return true; 947 } 948 949 @Override 950 boolean validate() { 951 return checkCurrent() != SURFACE_STATE_ERROR; 952 } 953 954 @Override 955 void setup(int width, int height) { 956 if (validate()) { 957 mCanvas.setViewport(width, height); 958 mWidth = width; 959 mHeight = height; 960 } 961 } 962 963 @Override 964 int getWidth() { 965 return mWidth; 966 } 967 968 @Override 969 int getHeight() { 970 return mHeight; 971 } 972 973 @Override 974 HardwareCanvas getCanvas() { 975 return mCanvas; 976 } 977 978 boolean canDraw() { 979 return mGl != null && mCanvas != null; 980 } 981 982 void onPreDraw(Rect dirty) { 983 984 } 985 986 void onPostDraw() { 987 } 988 989 class FunctorsRunnable implements Runnable { 990 View.AttachInfo attachInfo; 991 992 @Override 993 public void run() { 994 final HardwareRenderer renderer = attachInfo.mHardwareRenderer; 995 if (renderer == null || !renderer.isEnabled() || renderer != GlRenderer.this) { 996 return; 997 } 998 999 final int surfaceState = checkCurrent(); 1000 if (surfaceState != SURFACE_STATE_ERROR) { 1001 int status = mCanvas.invokeFunctors(mRedrawClip); 1002 handleFunctorStatus(attachInfo, status); 1003 } 1004 } 1005 } 1006 1007 @Override 1008 boolean draw(View view, View.AttachInfo attachInfo, HardwareDrawCallbacks callbacks, 1009 Rect dirty) { 1010 if (canDraw()) { 1011 if (!hasDirtyRegions()) { 1012 dirty = null; 1013 } 1014 attachInfo.mIgnoreDirtyState = true; 1015 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 1016 1017 view.mPrivateFlags |= View.DRAWN; 1018 1019 final int surfaceState = checkCurrent(); 1020 if (surfaceState != SURFACE_STATE_ERROR) { 1021 HardwareCanvas canvas = mCanvas; 1022 attachInfo.mHardwareCanvas = canvas; 1023 1024 // We had to change the current surface and/or context, redraw everything 1025 if (surfaceState == SURFACE_STATE_UPDATED) { 1026 dirty = null; 1027 beginFrame(null); 1028 } else { 1029 int[] size = mSurfaceSize; 1030 beginFrame(size); 1031 1032 if (size[1] != mHeight || size[0] != mWidth) { 1033 mWidth = size[0]; 1034 mHeight = size[1]; 1035 1036 canvas.setViewport(mWidth, mHeight); 1037 1038 dirty = null; 1039 } 1040 } 1041 1042 onPreDraw(dirty); 1043 1044 int saveCount = canvas.save(); 1045 callbacks.onHardwarePreDraw(canvas); 1046 1047 try { 1048 view.mRecreateDisplayList = 1049 (view.mPrivateFlags & View.INVALIDATED) == View.INVALIDATED; 1050 view.mPrivateFlags &= ~View.INVALIDATED; 1051 1052 long getDisplayListStartTime = 0; 1053 if (mProfileEnabled) { 1054 mProfileCurrentFrame += PROFILE_FRAME_DATA_COUNT; 1055 if (mProfileCurrentFrame >= mProfileData.length) { 1056 mProfileCurrentFrame = 0; 1057 } 1058 1059 getDisplayListStartTime = System.nanoTime(); 1060 } 1061 1062 DisplayList displayList = view.getDisplayList(); 1063 1064 if (mProfileEnabled) { 1065 long now = System.nanoTime(); 1066 float total = (now - getDisplayListStartTime) * 0.000001f; 1067 //noinspection PointlessArithmeticExpression 1068 mProfileData[mProfileCurrentFrame] = total; 1069 1070 if (ViewDebug.DEBUG_LATENCY) { 1071 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- getDisplayList() took " + 1072 total + "ms"); 1073 } 1074 } 1075 1076 if (displayList != null) { 1077 long drawDisplayListStartTime = 0; 1078 if (mProfileEnabled) { 1079 drawDisplayListStartTime = System.nanoTime(); 1080 } 1081 1082 int status = canvas.drawDisplayList(displayList, 1083 view.getWidth(), view.getHeight(), mRedrawClip, 1084 DisplayList.FLAG_CLIP_CHILDREN); 1085 1086 if (mProfileEnabled) { 1087 long now = System.nanoTime(); 1088 float total = (now - drawDisplayListStartTime) * 0.000001f; 1089 mProfileData[mProfileCurrentFrame + 1] = total; 1090 1091 if (ViewDebug.DEBUG_LATENCY) { 1092 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- drawDisplayList() took " + 1093 total + "ms, status=" + status); 1094 } 1095 } 1096 1097 handleFunctorStatus(attachInfo, status); 1098 } else { 1099 // Shouldn't reach here 1100 view.draw(canvas); 1101 } 1102 } finally { 1103 callbacks.onHardwarePostDraw(canvas); 1104 canvas.restoreToCount(saveCount); 1105 view.mRecreateDisplayList = false; 1106 mFrameCount++; 1107 if (mDebugDirtyRegions) { 1108 if (mDebugPaint == null) { 1109 mDebugPaint = new Paint(); 1110 mDebugPaint.setColor(0x7fff0000); 1111 } 1112 if (dirty != null && (mFrameCount & 1) == 0) { 1113 canvas.drawRect(dirty, mDebugPaint); 1114 } 1115 } 1116 } 1117 1118 onPostDraw(); 1119 1120 attachInfo.mIgnoreDirtyState = false; 1121 1122 long eglSwapBuffersStartTime = 0; 1123 if (mProfileEnabled) { 1124 eglSwapBuffersStartTime = System.nanoTime(); 1125 } 1126 1127 sEgl.eglSwapBuffers(sEglDisplay, mEglSurface); 1128 1129 if (mProfileEnabled) { 1130 long now = System.nanoTime(); 1131 float total = (now - eglSwapBuffersStartTime) * 0.000001f; 1132 mProfileData[mProfileCurrentFrame + 2] = total; 1133 1134 if (ViewDebug.DEBUG_LATENCY) { 1135 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- eglSwapBuffers() took " + 1136 total + "ms"); 1137 } 1138 } 1139 1140 checkEglErrors(); 1141 1142 return dirty == null; 1143 } 1144 } 1145 1146 return false; 1147 } 1148 1149 private void handleFunctorStatus(View.AttachInfo attachInfo, int status) { 1150 // If the draw flag is set, functors will be invoked while executing 1151 // the tree of display lists 1152 if ((status & DisplayList.STATUS_DRAW) != 0) { 1153 if (mRedrawClip.isEmpty()) { 1154 attachInfo.mViewRootImpl.invalidate(); 1155 } else { 1156 attachInfo.mViewRootImpl.invalidateChildInParent(null, mRedrawClip); 1157 mRedrawClip.setEmpty(); 1158 } 1159 } 1160 1161 if ((status & DisplayList.STATUS_INVOKE) != 0) { 1162 attachInfo.mHandler.removeCallbacks(mFunctorsRunnable); 1163 mFunctorsRunnable.attachInfo = attachInfo; 1164 // delay the functor callback by a few ms so it isn't polled constantly 1165 attachInfo.mHandler.postDelayed(mFunctorsRunnable, FUNCTOR_PROCESS_DELAY); 1166 } 1167 } 1168 1169 /** 1170 * Ensures the current EGL context is the one we expect. 1171 * 1172 * @return {@link #SURFACE_STATE_ERROR} if the correct EGL context cannot be made current, 1173 * {@link #SURFACE_STATE_UPDATED} if the EGL context was changed or 1174 * {@link #SURFACE_STATE_SUCCESS} if the EGL context was the correct one 1175 */ 1176 int checkCurrent() { 1177 if (mEglThread != Thread.currentThread()) { 1178 throw new IllegalStateException("Hardware acceleration can only be used with a " + 1179 "single UI thread.\nOriginal thread: " + mEglThread + "\n" + 1180 "Current thread: " + Thread.currentThread()); 1181 } 1182 1183 if (!mEglContext.equals(sEgl.eglGetCurrentContext()) || 1184 !mEglSurface.equals(sEgl.eglGetCurrentSurface(EGL_DRAW))) { 1185 if (!sEgl.eglMakeCurrent(sEglDisplay, mEglSurface, mEglSurface, mEglContext)) { 1186 Log.e(LOG_TAG, "eglMakeCurrent failed " + 1187 GLUtils.getEGLErrorString(sEgl.eglGetError())); 1188 fallback(true); 1189 return SURFACE_STATE_ERROR; 1190 } else { 1191 if (mUpdateDirtyRegions) { 1192 enableDirtyRegions(); 1193 mUpdateDirtyRegions = false; 1194 } 1195 return SURFACE_STATE_UPDATED; 1196 } 1197 } 1198 return SURFACE_STATE_SUCCESS; 1199 } 1200 } 1201 1202 /** 1203 * Hardware renderer using OpenGL ES 2.0. 1204 */ 1205 static class Gl20Renderer extends GlRenderer { 1206 private GLES20Canvas mGlCanvas; 1207 1208 private static EGLSurface sPbuffer; 1209 private static final Object[] sPbufferLock = new Object[0]; 1210 1211 static class Gl20RendererEglContext extends ManagedEGLContext { 1212 final Handler mHandler = new Handler(); 1213 1214 public Gl20RendererEglContext(EGLContext context) { 1215 super(context); 1216 } 1217 1218 @Override 1219 public void onTerminate(final EGLContext eglContext) { 1220 // Make sure we do this on the correct thread. 1221 if (mHandler.getLooper() != Looper.myLooper()) { 1222 mHandler.post(new Runnable() { 1223 @Override 1224 public void run() { 1225 onTerminate(eglContext); 1226 } 1227 }); 1228 return; 1229 } 1230 1231 synchronized (sEglLock) { 1232 if (sEgl == null) return; 1233 1234 if (EGLImpl.getInitCount(sEglDisplay) == 1) { 1235 usePbufferSurface(eglContext); 1236 GLES20Canvas.terminateCaches(); 1237 1238 sEgl.eglDestroyContext(sEglDisplay, eglContext); 1239 sEglContextStorage.set(null); 1240 sEglContextStorage.remove(); 1241 1242 sEgl.eglDestroySurface(sEglDisplay, sPbuffer); 1243 sEgl.eglMakeCurrent(sEglDisplay, EGL_NO_SURFACE, 1244 EGL_NO_SURFACE, EGL_NO_CONTEXT); 1245 1246 sEgl.eglReleaseThread(); 1247 sEgl.eglTerminate(sEglDisplay); 1248 1249 sEgl = null; 1250 sEglDisplay = null; 1251 sEglConfig = null; 1252 sPbuffer = null; 1253 } 1254 } 1255 } 1256 } 1257 1258 Gl20Renderer(boolean translucent) { 1259 super(2, translucent); 1260 } 1261 1262 @Override 1263 HardwareCanvas createCanvas() { 1264 return mGlCanvas = new GLES20Canvas(mTranslucent); 1265 } 1266 1267 @Override 1268 ManagedEGLContext createManagedContext(EGLContext eglContext) { 1269 return new Gl20Renderer.Gl20RendererEglContext(mEglContext); 1270 } 1271 1272 @Override 1273 int[] getConfig(boolean dirtyRegions) { 1274 return new int[] { 1275 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, 1276 EGL_RED_SIZE, 8, 1277 EGL_GREEN_SIZE, 8, 1278 EGL_BLUE_SIZE, 8, 1279 EGL_ALPHA_SIZE, 8, 1280 EGL_DEPTH_SIZE, 0, 1281 EGL_STENCIL_SIZE, GLES20Canvas.getStencilSize(), 1282 EGL_SURFACE_TYPE, EGL_WINDOW_BIT | 1283 (dirtyRegions ? EGL_SWAP_BEHAVIOR_PRESERVED_BIT : 0), 1284 EGL_NONE 1285 }; 1286 } 1287 1288 @Override 1289 void initCaches() { 1290 GLES20Canvas.initCaches(); 1291 } 1292 1293 @Override 1294 boolean canDraw() { 1295 return super.canDraw() && mGlCanvas != null; 1296 } 1297 1298 @Override 1299 void onPreDraw(Rect dirty) { 1300 mGlCanvas.onPreDraw(dirty); 1301 } 1302 1303 @Override 1304 void onPostDraw() { 1305 mGlCanvas.onPostDraw(); 1306 } 1307 1308 @Override 1309 void destroy(boolean full) { 1310 try { 1311 super.destroy(full); 1312 } finally { 1313 if (full && mGlCanvas != null) { 1314 mGlCanvas = null; 1315 } 1316 } 1317 } 1318 1319 @Override 1320 void setup(int width, int height) { 1321 super.setup(width, height); 1322 if (mVsyncDisabled) { 1323 disableVsync(); 1324 } 1325 } 1326 1327 @Override 1328 public DisplayList createDisplayList(String name) { 1329 return new GLES20DisplayList(name); 1330 } 1331 1332 @Override 1333 HardwareLayer createHardwareLayer(boolean isOpaque) { 1334 return new GLES20TextureLayer(isOpaque); 1335 } 1336 1337 @Override 1338 HardwareLayer createHardwareLayer(int width, int height, boolean isOpaque) { 1339 return new GLES20RenderLayer(width, height, isOpaque); 1340 } 1341 1342 @Override 1343 SurfaceTexture createSurfaceTexture(HardwareLayer layer) { 1344 return ((GLES20TextureLayer) layer).getSurfaceTexture(); 1345 } 1346 1347 @Override 1348 void destroyLayers(View view) { 1349 if (view != null && isEnabled() && checkCurrent() != SURFACE_STATE_ERROR) { 1350 destroyHardwareLayer(view); 1351 GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_LAYERS); 1352 } 1353 } 1354 1355 private static void destroyHardwareLayer(View view) { 1356 view.destroyLayer(true); 1357 1358 if (view instanceof ViewGroup) { 1359 ViewGroup group = (ViewGroup) view; 1360 1361 int count = group.getChildCount(); 1362 for (int i = 0; i < count; i++) { 1363 destroyHardwareLayer(group.getChildAt(i)); 1364 } 1365 } 1366 } 1367 1368 @Override 1369 void destroyHardwareResources(View view) { 1370 if (view != null) { 1371 boolean needsContext = true; 1372 if (isEnabled() && checkCurrent() != SURFACE_STATE_ERROR) needsContext = false; 1373 1374 if (needsContext) { 1375 Gl20RendererEglContext managedContext = 1376 (Gl20RendererEglContext) sEglContextStorage.get(); 1377 if (managedContext == null) return; 1378 usePbufferSurface(managedContext.getContext()); 1379 } 1380 1381 destroyResources(view); 1382 GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_LAYERS); 1383 } 1384 } 1385 1386 private static void destroyResources(View view) { 1387 view.destroyHardwareResources(); 1388 1389 if (view instanceof ViewGroup) { 1390 ViewGroup group = (ViewGroup) view; 1391 1392 int count = group.getChildCount(); 1393 for (int i = 0; i < count; i++) { 1394 destroyResources(group.getChildAt(i)); 1395 } 1396 } 1397 } 1398 1399 static HardwareRenderer create(boolean translucent) { 1400 if (GLES20Canvas.isAvailable()) { 1401 return new Gl20Renderer(translucent); 1402 } 1403 return null; 1404 } 1405 1406 static void trimMemory(int level) { 1407 if (sEgl == null || sEglConfig == null) return; 1408 1409 Gl20RendererEglContext managedContext = 1410 (Gl20RendererEglContext) sEglContextStorage.get(); 1411 // We do not have OpenGL objects 1412 if (managedContext == null) { 1413 return; 1414 } else { 1415 usePbufferSurface(managedContext.getContext()); 1416 } 1417 1418 if (level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) { 1419 GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_FULL); 1420 } else if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) { 1421 GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_MODERATE); 1422 } 1423 } 1424 1425 private static void usePbufferSurface(EGLContext eglContext) { 1426 synchronized (sPbufferLock) { 1427 // Create a temporary 1x1 pbuffer so we have a context 1428 // to clear our OpenGL objects 1429 if (sPbuffer == null) { 1430 sPbuffer = sEgl.eglCreatePbufferSurface(sEglDisplay, sEglConfig, new int[] { 1431 EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE 1432 }); 1433 } 1434 } 1435 sEgl.eglMakeCurrent(sEglDisplay, sPbuffer, sPbuffer, eglContext); 1436 } 1437 } 1438} 1439