1 /* 2 * Copyright (C) 2014 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 #include "EglManager.h" 18 19 #include <cutils/properties.h> 20 #include <log/log.h> 21 #include <private/gui/SyncFeatures.h> 22 #include <utils/Trace.h> 23 #include "utils/Color.h" 24 #include "utils/StringUtils.h" 25 26 #include "Frame.h" 27 #include "Properties.h" 28 29 #include <EGL/eglext.h> 30 #include <GLES/gl.h> 31 32 #include <gui/Surface.h> 33 #include <system/window.h> 34 #include <string> 35 #include <vector> 36 37 #define GLES_VERSION 2 38 39 // Android-specific addition that is used to show when frames began in systrace 40 EGLAPI void EGLAPIENTRY eglBeginFrame(EGLDisplay dpy, EGLSurface surface); 41 42 namespace android { 43 namespace uirenderer { 44 namespace renderthread { 45 46 #define ERROR_CASE(x) \ 47 case x: \ 48 return #x; 49 static const char* egl_error_str(EGLint error) { 50 switch (error) { 51 ERROR_CASE(EGL_SUCCESS) 52 ERROR_CASE(EGL_NOT_INITIALIZED) 53 ERROR_CASE(EGL_BAD_ACCESS) 54 ERROR_CASE(EGL_BAD_ALLOC) 55 ERROR_CASE(EGL_BAD_ATTRIBUTE) 56 ERROR_CASE(EGL_BAD_CONFIG) 57 ERROR_CASE(EGL_BAD_CONTEXT) 58 ERROR_CASE(EGL_BAD_CURRENT_SURFACE) 59 ERROR_CASE(EGL_BAD_DISPLAY) 60 ERROR_CASE(EGL_BAD_MATCH) 61 ERROR_CASE(EGL_BAD_NATIVE_PIXMAP) 62 ERROR_CASE(EGL_BAD_NATIVE_WINDOW) 63 ERROR_CASE(EGL_BAD_PARAMETER) 64 ERROR_CASE(EGL_BAD_SURFACE) 65 ERROR_CASE(EGL_CONTEXT_LOST) 66 default: 67 return "Unknown error"; 68 } 69 } 70 const char* EglManager::eglErrorString() { 71 return egl_error_str(eglGetError()); 72 } 73 74 static struct { 75 bool bufferAge = false; 76 bool setDamage = false; 77 bool noConfigContext = false; 78 bool pixelFormatFloat = false; 79 bool glColorSpace = false; 80 bool scRGB = false; 81 bool displayP3 = false; 82 bool contextPriority = false; 83 bool surfacelessContext = false; 84 } EglExtensions; 85 86 EglManager::EglManager() 87 : mEglDisplay(EGL_NO_DISPLAY) 88 , mEglConfig(nullptr) 89 , mEglConfigWideGamut(nullptr) 90 , mEglContext(EGL_NO_CONTEXT) 91 , mPBufferSurface(EGL_NO_SURFACE) 92 , mCurrentSurface(EGL_NO_SURFACE) 93 , mHasWideColorGamutSupport(false) {} 94 95 EglManager::~EglManager() { 96 if (hasEglContext()) { 97 ALOGW("~EglManager() leaked an EGL context"); 98 } 99 } 100 101 void EglManager::initialize() { 102 if (hasEglContext()) return; 103 104 ATRACE_NAME("Creating EGLContext"); 105 106 mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 107 LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY, "Failed to get EGL_DEFAULT_DISPLAY! err=%s", 108 eglErrorString()); 109 110 EGLint major, minor; 111 LOG_ALWAYS_FATAL_IF(eglInitialize(mEglDisplay, &major, &minor) == EGL_FALSE, 112 "Failed to initialize display %p! err=%s", mEglDisplay, eglErrorString()); 113 114 ALOGV("Initialized EGL, version %d.%d", (int)major, (int)minor); 115 116 initExtensions(); 117 118 // Now that extensions are loaded, pick a swap behavior 119 if (Properties::enablePartialUpdates) { 120 // An Adreno driver bug is causing rendering problems for SkiaGL with 121 // buffer age swap behavior (b/31957043). To temporarily workaround, 122 // we will use preserved swap behavior. 123 if (Properties::useBufferAge && EglExtensions.bufferAge) { 124 mSwapBehavior = SwapBehavior::BufferAge; 125 } else { 126 mSwapBehavior = SwapBehavior::Preserved; 127 } 128 } 129 130 loadConfigs(); 131 createContext(); 132 createPBufferSurface(); 133 makeCurrent(mPBufferSurface, nullptr, /* force */ true); 134 135 skcms_Matrix3x3 wideColorGamut; 136 LOG_ALWAYS_FATAL_IF(!DeviceInfo::get()->getWideColorSpace()->toXYZD50(&wideColorGamut), 137 "Could not get gamut matrix from wideColorSpace"); 138 bool hasWideColorSpaceExtension = false; 139 if (memcmp(&wideColorGamut, &SkNamedGamut::kDCIP3, sizeof(wideColorGamut)) == 0) { 140 hasWideColorSpaceExtension = EglExtensions.displayP3; 141 } else if (memcmp(&wideColorGamut, &SkNamedGamut::kSRGB, sizeof(wideColorGamut)) == 0) { 142 hasWideColorSpaceExtension = EglExtensions.scRGB; 143 } else { 144 LOG_ALWAYS_FATAL("Unsupported wide color space."); 145 } 146 mHasWideColorGamutSupport = EglExtensions.glColorSpace && hasWideColorSpaceExtension && 147 mEglConfigWideGamut != EGL_NO_CONFIG_KHR; 148 } 149 150 EGLConfig EglManager::load8BitsConfig(EGLDisplay display, EglManager::SwapBehavior swapBehavior) { 151 EGLint eglSwapBehavior = 152 (swapBehavior == SwapBehavior::Preserved) ? EGL_SWAP_BEHAVIOR_PRESERVED_BIT : 0; 153 EGLint attribs[] = {EGL_RENDERABLE_TYPE, 154 EGL_OPENGL_ES2_BIT, 155 EGL_RED_SIZE, 156 8, 157 EGL_GREEN_SIZE, 158 8, 159 EGL_BLUE_SIZE, 160 8, 161 EGL_ALPHA_SIZE, 162 8, 163 EGL_DEPTH_SIZE, 164 0, 165 EGL_CONFIG_CAVEAT, 166 EGL_NONE, 167 EGL_STENCIL_SIZE, 168 STENCIL_BUFFER_SIZE, 169 EGL_SURFACE_TYPE, 170 EGL_WINDOW_BIT | eglSwapBehavior, 171 EGL_NONE}; 172 EGLConfig config = EGL_NO_CONFIG_KHR; 173 EGLint numConfigs = 1; 174 if (!eglChooseConfig(display, attribs, &config, numConfigs, &numConfigs) || numConfigs != 1) { 175 return EGL_NO_CONFIG_KHR; 176 } 177 return config; 178 } 179 180 EGLConfig EglManager::loadFP16Config(EGLDisplay display, SwapBehavior swapBehavior) { 181 EGLint eglSwapBehavior = 182 (swapBehavior == SwapBehavior::Preserved) ? EGL_SWAP_BEHAVIOR_PRESERVED_BIT : 0; 183 // If we reached this point, we have a valid swap behavior 184 EGLint attribs[] = {EGL_RENDERABLE_TYPE, 185 EGL_OPENGL_ES2_BIT, 186 EGL_COLOR_COMPONENT_TYPE_EXT, 187 EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT, 188 EGL_RED_SIZE, 189 16, 190 EGL_GREEN_SIZE, 191 16, 192 EGL_BLUE_SIZE, 193 16, 194 EGL_ALPHA_SIZE, 195 16, 196 EGL_DEPTH_SIZE, 197 0, 198 EGL_STENCIL_SIZE, 199 STENCIL_BUFFER_SIZE, 200 EGL_SURFACE_TYPE, 201 EGL_WINDOW_BIT | eglSwapBehavior, 202 EGL_NONE}; 203 EGLConfig config = EGL_NO_CONFIG_KHR; 204 EGLint numConfigs = 1; 205 if (!eglChooseConfig(display, attribs, &config, numConfigs, &numConfigs) || numConfigs != 1) { 206 return EGL_NO_CONFIG_KHR; 207 } 208 return config; 209 } 210 211 void EglManager::initExtensions() { 212 auto extensions = StringUtils::split(eglQueryString(mEglDisplay, EGL_EXTENSIONS)); 213 214 // For our purposes we don't care if EGL_BUFFER_AGE is a result of 215 // EGL_EXT_buffer_age or EGL_KHR_partial_update as our usage is covered 216 // under EGL_KHR_partial_update and we don't need the expanded scope 217 // that EGL_EXT_buffer_age provides. 218 EglExtensions.bufferAge = 219 extensions.has("EGL_EXT_buffer_age") || extensions.has("EGL_KHR_partial_update"); 220 EglExtensions.setDamage = extensions.has("EGL_KHR_partial_update"); 221 LOG_ALWAYS_FATAL_IF(!extensions.has("EGL_KHR_swap_buffers_with_damage"), 222 "Missing required extension EGL_KHR_swap_buffers_with_damage"); 223 224 EglExtensions.glColorSpace = extensions.has("EGL_KHR_gl_colorspace"); 225 EglExtensions.noConfigContext = extensions.has("EGL_KHR_no_config_context"); 226 EglExtensions.pixelFormatFloat = extensions.has("EGL_EXT_pixel_format_float"); 227 EglExtensions.scRGB = extensions.has("EGL_EXT_gl_colorspace_scrgb"); 228 EglExtensions.displayP3 = extensions.has("EGL_EXT_gl_colorspace_display_p3_passthrough"); 229 EglExtensions.contextPriority = extensions.has("EGL_IMG_context_priority"); 230 EglExtensions.surfacelessContext = extensions.has("EGL_KHR_surfaceless_context"); 231 } 232 233 bool EglManager::hasEglContext() { 234 return mEglDisplay != EGL_NO_DISPLAY; 235 } 236 237 void EglManager::loadConfigs() { 238 // Note: The default pixel format is RGBA_8888, when other formats are 239 // available, we should check the target pixel format and configure the 240 // attributes list properly. 241 mEglConfig = load8BitsConfig(mEglDisplay, mSwapBehavior); 242 if (mEglConfig == EGL_NO_CONFIG_KHR) { 243 if (mSwapBehavior == SwapBehavior::Preserved) { 244 // Try again without dirty regions enabled 245 ALOGW("Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without..."); 246 mSwapBehavior = SwapBehavior::Discard; 247 mEglConfig = load8BitsConfig(mEglDisplay, mSwapBehavior); 248 } else { 249 // Failed to get a valid config 250 LOG_ALWAYS_FATAL("Failed to choose config, error = %s", eglErrorString()); 251 } 252 } 253 SkColorType wideColorType = DeviceInfo::get()->getWideColorType(); 254 255 // When we reach this point, we have a valid swap behavior 256 if (wideColorType == SkColorType::kRGBA_F16_SkColorType && EglExtensions.pixelFormatFloat) { 257 mEglConfigWideGamut = loadFP16Config(mEglDisplay, mSwapBehavior); 258 if (mEglConfigWideGamut == EGL_NO_CONFIG_KHR) { 259 ALOGE("Device claims wide gamut support, cannot find matching config, error = %s", 260 eglErrorString()); 261 EglExtensions.pixelFormatFloat = false; 262 } 263 } else if (wideColorType == SkColorType::kN32_SkColorType) { 264 mEglConfigWideGamut = load8BitsConfig(mEglDisplay, mSwapBehavior); 265 } 266 } 267 268 void EglManager::createContext() { 269 std::vector<EGLint> contextAttributes; 270 contextAttributes.reserve(5); 271 contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION); 272 contextAttributes.push_back(GLES_VERSION); 273 if (Properties::contextPriority != 0 && EglExtensions.contextPriority) { 274 contextAttributes.push_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG); 275 contextAttributes.push_back(Properties::contextPriority); 276 } 277 contextAttributes.push_back(EGL_NONE); 278 mEglContext = eglCreateContext( 279 mEglDisplay, EglExtensions.noConfigContext ? ((EGLConfig) nullptr) : mEglConfig, 280 EGL_NO_CONTEXT, contextAttributes.data()); 281 LOG_ALWAYS_FATAL_IF(mEglContext == EGL_NO_CONTEXT, "Failed to create context, error = %s", 282 eglErrorString()); 283 } 284 285 void EglManager::createPBufferSurface() { 286 LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY, 287 "usePBufferSurface() called on uninitialized GlobalContext!"); 288 289 if (mPBufferSurface == EGL_NO_SURFACE && !EglExtensions.surfacelessContext) { 290 EGLint attribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE}; 291 mPBufferSurface = eglCreatePbufferSurface(mEglDisplay, mEglConfig, attribs); 292 } 293 } 294 295 Result<EGLSurface, EGLint> EglManager::createSurface(EGLNativeWindowType window, 296 ColorMode colorMode, 297 sk_sp<SkColorSpace> colorSpace) { 298 LOG_ALWAYS_FATAL_IF(!hasEglContext(), "Not initialized"); 299 300 bool wideColorGamut = colorMode == ColorMode::WideColorGamut && mHasWideColorGamutSupport && 301 EglExtensions.noConfigContext; 302 303 // The color space we want to use depends on whether linear blending is turned 304 // on and whether the app has requested wide color gamut rendering. When wide 305 // color gamut rendering is off, the app simply renders in the display's native 306 // color gamut. 307 // 308 // When wide gamut rendering is off: 309 // - Blending is done by default in gamma space, which requires using a 310 // linear EGL color space (the GPU uses the color values as is) 311 // - If linear blending is on, we must use the non-linear EGL color space 312 // (the GPU will perform sRGB to linear and linear to SRGB conversions 313 // before and after blending) 314 // 315 // When wide gamut rendering is on we cannot rely on the GPU performing 316 // linear blending for us. We use two different color spaces to tag the 317 // surface appropriately for SurfaceFlinger: 318 // - Gamma blending (default) requires the use of the non-linear color space 319 // - Linear blending requires the use of the linear color space 320 321 // Not all Android targets support the EGL_GL_COLORSPACE_KHR extension 322 // We insert to placeholders to set EGL_GL_COLORSPACE_KHR and its value. 323 // According to section 3.4.1 of the EGL specification, the attributes 324 // list is considered empty if the first entry is EGL_NONE 325 EGLint attribs[] = {EGL_NONE, EGL_NONE, EGL_NONE}; 326 327 if (EglExtensions.glColorSpace) { 328 attribs[0] = EGL_GL_COLORSPACE_KHR; 329 if (wideColorGamut) { 330 skcms_Matrix3x3 colorGamut; 331 LOG_ALWAYS_FATAL_IF(!colorSpace->toXYZD50(&colorGamut), 332 "Could not get gamut matrix from color space"); 333 if (memcmp(&colorGamut, &SkNamedGamut::kDCIP3, sizeof(colorGamut)) == 0) { 334 attribs[1] = EGL_GL_COLORSPACE_DISPLAY_P3_PASSTHROUGH_EXT; 335 } else if (memcmp(&colorGamut, &SkNamedGamut::kSRGB, sizeof(colorGamut)) == 0) { 336 attribs[1] = EGL_GL_COLORSPACE_SCRGB_EXT; 337 } else { 338 LOG_ALWAYS_FATAL("Unreachable: unsupported wide color space."); 339 } 340 } else { 341 attribs[1] = EGL_GL_COLORSPACE_LINEAR_KHR; 342 } 343 } 344 345 EGLSurface surface = eglCreateWindowSurface( 346 mEglDisplay, wideColorGamut ? mEglConfigWideGamut : mEglConfig, window, attribs); 347 if (surface == EGL_NO_SURFACE) { 348 return Error<EGLint>{eglGetError()}; 349 } 350 351 if (mSwapBehavior != SwapBehavior::Preserved) { 352 LOG_ALWAYS_FATAL_IF(eglSurfaceAttrib(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, 353 EGL_BUFFER_DESTROYED) == EGL_FALSE, 354 "Failed to set swap behavior to destroyed for window %p, eglErr = %s", 355 (void*)window, eglErrorString()); 356 } 357 358 return surface; 359 } 360 361 void EglManager::destroySurface(EGLSurface surface) { 362 if (isCurrent(surface)) { 363 makeCurrent(EGL_NO_SURFACE); 364 } 365 if (!eglDestroySurface(mEglDisplay, surface)) { 366 ALOGW("Failed to destroy surface %p, error=%s", (void*)surface, eglErrorString()); 367 } 368 } 369 370 void EglManager::destroy() { 371 if (mEglDisplay == EGL_NO_DISPLAY) return; 372 373 eglDestroyContext(mEglDisplay, mEglContext); 374 if (mPBufferSurface != EGL_NO_SURFACE) { 375 eglDestroySurface(mEglDisplay, mPBufferSurface); 376 } 377 eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 378 eglTerminate(mEglDisplay); 379 eglReleaseThread(); 380 381 mEglDisplay = EGL_NO_DISPLAY; 382 mEglContext = EGL_NO_CONTEXT; 383 mPBufferSurface = EGL_NO_SURFACE; 384 mCurrentSurface = EGL_NO_SURFACE; 385 } 386 387 bool EglManager::makeCurrent(EGLSurface surface, EGLint* errOut, bool force) { 388 if (!force && isCurrent(surface)) return false; 389 390 if (surface == EGL_NO_SURFACE) { 391 // Ensure we always have a valid surface & context 392 surface = mPBufferSurface; 393 } 394 if (!eglMakeCurrent(mEglDisplay, surface, surface, mEglContext)) { 395 if (errOut) { 396 *errOut = eglGetError(); 397 ALOGW("Failed to make current on surface %p, error=%s", (void*)surface, 398 egl_error_str(*errOut)); 399 } else { 400 LOG_ALWAYS_FATAL("Failed to make current on surface %p, error=%s", (void*)surface, 401 eglErrorString()); 402 } 403 } 404 mCurrentSurface = surface; 405 if (Properties::disableVsync) { 406 eglSwapInterval(mEglDisplay, 0); 407 } 408 return true; 409 } 410 411 EGLint EglManager::queryBufferAge(EGLSurface surface) { 412 switch (mSwapBehavior) { 413 case SwapBehavior::Discard: 414 return 0; 415 case SwapBehavior::Preserved: 416 return 1; 417 case SwapBehavior::BufferAge: 418 EGLint bufferAge; 419 eglQuerySurface(mEglDisplay, surface, EGL_BUFFER_AGE_EXT, &bufferAge); 420 return bufferAge; 421 } 422 return 0; 423 } 424 425 Frame EglManager::beginFrame(EGLSurface surface) { 426 LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE, "Tried to beginFrame on EGL_NO_SURFACE!"); 427 makeCurrent(surface); 428 Frame frame; 429 frame.mSurface = surface; 430 eglQuerySurface(mEglDisplay, surface, EGL_WIDTH, &frame.mWidth); 431 eglQuerySurface(mEglDisplay, surface, EGL_HEIGHT, &frame.mHeight); 432 frame.mBufferAge = queryBufferAge(surface); 433 eglBeginFrame(mEglDisplay, surface); 434 return frame; 435 } 436 437 void EglManager::damageFrame(const Frame& frame, const SkRect& dirty) { 438 #ifdef EGL_KHR_partial_update 439 if (EglExtensions.setDamage && mSwapBehavior == SwapBehavior::BufferAge) { 440 EGLint rects[4]; 441 frame.map(dirty, rects); 442 if (!eglSetDamageRegionKHR(mEglDisplay, frame.mSurface, rects, 1)) { 443 LOG_ALWAYS_FATAL("Failed to set damage region on surface %p, error=%s", 444 (void*)frame.mSurface, eglErrorString()); 445 } 446 } 447 #endif 448 } 449 450 bool EglManager::damageRequiresSwap() { 451 return EglExtensions.setDamage && mSwapBehavior == SwapBehavior::BufferAge; 452 } 453 454 bool EglManager::swapBuffers(const Frame& frame, const SkRect& screenDirty) { 455 if (CC_UNLIKELY(Properties::waitForGpuCompletion)) { 456 ATRACE_NAME("Finishing GPU work"); 457 fence(); 458 } 459 460 EGLint rects[4]; 461 frame.map(screenDirty, rects); 462 eglSwapBuffersWithDamageKHR(mEglDisplay, frame.mSurface, rects, screenDirty.isEmpty() ? 0 : 1); 463 464 EGLint err = eglGetError(); 465 if (CC_LIKELY(err == EGL_SUCCESS)) { 466 return true; 467 } 468 if (err == EGL_BAD_SURFACE || err == EGL_BAD_NATIVE_WINDOW) { 469 // For some reason our surface was destroyed out from under us 470 // This really shouldn't happen, but if it does we can recover easily 471 // by just not trying to use the surface anymore 472 ALOGW("swapBuffers encountered EGL error %d on %p, halting rendering...", err, 473 frame.mSurface); 474 return false; 475 } 476 LOG_ALWAYS_FATAL("Encountered EGL error %d %s during rendering", err, egl_error_str(err)); 477 // Impossible to hit this, but the compiler doesn't know that 478 return false; 479 } 480 481 void EglManager::fence() { 482 EGLSyncKHR fence = eglCreateSyncKHR(mEglDisplay, EGL_SYNC_FENCE_KHR, NULL); 483 eglClientWaitSyncKHR(mEglDisplay, fence, EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, EGL_FOREVER_KHR); 484 eglDestroySyncKHR(mEglDisplay, fence); 485 } 486 487 bool EglManager::setPreserveBuffer(EGLSurface surface, bool preserve) { 488 if (mSwapBehavior != SwapBehavior::Preserved) return false; 489 490 bool preserved = eglSurfaceAttrib(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, 491 preserve ? EGL_BUFFER_PRESERVED : EGL_BUFFER_DESTROYED); 492 if (!preserved) { 493 ALOGW("Failed to set EGL_SWAP_BEHAVIOR on surface %p, error=%s", (void*)surface, 494 eglErrorString()); 495 // Maybe it's already set? 496 EGLint swapBehavior; 497 if (eglQuerySurface(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, &swapBehavior)) { 498 preserved = (swapBehavior == EGL_BUFFER_PRESERVED); 499 } else { 500 ALOGW("Failed to query EGL_SWAP_BEHAVIOR on surface %p, error=%p", (void*)surface, 501 eglErrorString()); 502 } 503 } 504 505 return preserved; 506 } 507 508 status_t EglManager::fenceWait(sp<Fence>& fence) { 509 if (!hasEglContext()) { 510 ALOGE("EglManager::fenceWait: EGLDisplay not initialized"); 511 return INVALID_OPERATION; 512 } 513 514 if (SyncFeatures::getInstance().useWaitSync() && 515 SyncFeatures::getInstance().useNativeFenceSync()) { 516 // Block GPU on the fence. 517 // Create an EGLSyncKHR from the current fence. 518 int fenceFd = fence->dup(); 519 if (fenceFd == -1) { 520 ALOGE("EglManager::fenceWait: error dup'ing fence fd: %d", errno); 521 return -errno; 522 } 523 EGLint attribs[] = {EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd, EGL_NONE}; 524 EGLSyncKHR sync = eglCreateSyncKHR(mEglDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, attribs); 525 if (sync == EGL_NO_SYNC_KHR) { 526 close(fenceFd); 527 ALOGE("EglManager::fenceWait: error creating EGL fence: %#x", eglGetError()); 528 return UNKNOWN_ERROR; 529 } 530 531 // XXX: The spec draft is inconsistent as to whether this should 532 // return an EGLint or void. Ignore the return value for now, as 533 // it's not strictly needed. 534 eglWaitSyncKHR(mEglDisplay, sync, 0); 535 EGLint eglErr = eglGetError(); 536 eglDestroySyncKHR(mEglDisplay, sync); 537 if (eglErr != EGL_SUCCESS) { 538 ALOGE("EglManager::fenceWait: error waiting for EGL fence: %#x", eglErr); 539 return UNKNOWN_ERROR; 540 } 541 } else { 542 // Block CPU on the fence. 543 status_t err = fence->waitForever("EglManager::fenceWait"); 544 if (err != NO_ERROR) { 545 ALOGE("EglManager::fenceWait: error waiting for fence: %d", err); 546 return err; 547 } 548 } 549 return OK; 550 } 551 552 status_t EglManager::createReleaseFence(bool useFenceSync, EGLSyncKHR* eglFence, 553 sp<Fence>& nativeFence) { 554 if (!hasEglContext()) { 555 ALOGE("EglManager::createReleaseFence: EGLDisplay not initialized"); 556 return INVALID_OPERATION; 557 } 558 559 if (SyncFeatures::getInstance().useNativeFenceSync()) { 560 EGLSyncKHR sync = eglCreateSyncKHR(mEglDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr); 561 if (sync == EGL_NO_SYNC_KHR) { 562 ALOGE("EglManager::createReleaseFence: error creating EGL fence: %#x", eglGetError()); 563 return UNKNOWN_ERROR; 564 } 565 glFlush(); 566 int fenceFd = eglDupNativeFenceFDANDROID(mEglDisplay, sync); 567 eglDestroySyncKHR(mEglDisplay, sync); 568 if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) { 569 ALOGE("EglManager::createReleaseFence: error dup'ing native fence " 570 "fd: %#x", 571 eglGetError()); 572 return UNKNOWN_ERROR; 573 } 574 nativeFence = new Fence(fenceFd); 575 *eglFence = EGL_NO_SYNC_KHR; 576 } else if (useFenceSync && SyncFeatures::getInstance().useFenceSync()) { 577 if (*eglFence != EGL_NO_SYNC_KHR) { 578 // There is already a fence for the current slot. We need to 579 // wait on that before replacing it with another fence to 580 // ensure that all outstanding buffer accesses have completed 581 // before the producer accesses it. 582 EGLint result = eglClientWaitSyncKHR(mEglDisplay, *eglFence, 0, 1000000000); 583 if (result == EGL_FALSE) { 584 ALOGE("EglManager::createReleaseFence: error waiting for previous fence: %#x", 585 eglGetError()); 586 return UNKNOWN_ERROR; 587 } else if (result == EGL_TIMEOUT_EXPIRED_KHR) { 588 ALOGE("EglManager::createReleaseFence: timeout waiting for previous fence"); 589 return TIMED_OUT; 590 } 591 eglDestroySyncKHR(mEglDisplay, *eglFence); 592 } 593 594 // Create a fence for the outstanding accesses in the current 595 // OpenGL ES context. 596 *eglFence = eglCreateSyncKHR(mEglDisplay, EGL_SYNC_FENCE_KHR, nullptr); 597 if (*eglFence == EGL_NO_SYNC_KHR) { 598 ALOGE("EglManager::createReleaseFence: error creating fence: %#x", eglGetError()); 599 return UNKNOWN_ERROR; 600 } 601 glFlush(); 602 } 603 return OK; 604 } 605 606 } /* namespace renderthread */ 607 } /* namespace uirenderer */ 608 } /* namespace android */ 609
