2 * Copyright (c) 2019 Samsung Electronics Co., Ltd.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <dali/internal/adaptor/common/combined-update-render-controller.h>
23 #include <dali/integration-api/platform-abstraction.h>
26 #include <dali/integration-api/trigger-event-factory.h>
27 #include <dali/internal/adaptor/common/combined-update-render-controller-debug.h>
28 #include <dali/internal/system/common/environment-options.h>
29 #include <dali/internal/system/common/time-service.h>
30 #include <dali/internal/adaptor/common/adaptor-internal-services.h>
31 #include <dali/devel-api/adaptor-framework/thread-settings.h>
32 #include <dali/internal/graphics/gles/egl-graphics.h>
33 #include <dali/internal/graphics/gles/egl-implementation.h>
34 #include <dali/internal/graphics/common/graphics-interface.h>
48 const unsigned int CREATED_THREAD_COUNT = 1u;
50 const int CONTINUOUS = -1;
53 const unsigned int TRUE = 1u;
54 const unsigned int FALSE = 0u;
56 const unsigned int MILLISECONDS_PER_SECOND( 1e+3 );
57 const float NANOSECONDS_TO_SECOND( 1e-9f );
58 const unsigned int NANOSECONDS_PER_SECOND( 1e+9 );
59 const unsigned int NANOSECONDS_PER_MILLISECOND( 1e+6 );
61 // The following values will get calculated at compile time
62 const float DEFAULT_FRAME_DURATION_IN_SECONDS( 1.0f / 60.0f );
63 const uint64_t DEFAULT_FRAME_DURATION_IN_MILLISECONDS( DEFAULT_FRAME_DURATION_IN_SECONDS * MILLISECONDS_PER_SECOND );
64 const uint64_t DEFAULT_FRAME_DURATION_IN_NANOSECONDS( DEFAULT_FRAME_DURATION_IN_SECONDS * NANOSECONDS_PER_SECOND );
67 * Handles the use case when an update-request is received JUST before we process a sleep-request. If we did not have an update-request count then
68 * there is a danger that, on the event-thread we could have:
69 * 1) An update-request where we do nothing as Update/Render thread still running.
70 * 2) Quickly followed by a sleep-request being handled where we pause the Update/Render Thread (even though we have an update to process).
72 * Using a counter means we increment the counter on an update-request, and decrement it on a sleep-request. This handles the above scenario because:
73 * 1) MAIN THREAD: Update Request: COUNTER = 1
74 * 2) UPDATE/RENDER THREAD: Do Update/Render, then no Updates required -> Sleep Trigger
75 * 3) MAIN THREAD: Update Request: COUNTER = 2
76 * 4) MAIN THREAD: Sleep Request: COUNTER = 1 -> We do not sleep just yet
78 * Also ensures we preserve battery life by only doing ONE update when the above use case is not triggered.
79 * 1) MAIN THREAD: Update Request: COUNTER = 1
80 * 2) UPDATE/RENDER THREAD: Do Update/Render, then no Updates required -> Sleep Trigger
81 * 3) MAIN THREAD: Sleep Request: COUNTER = 0 -> Go to sleep
83 const unsigned int MAXIMUM_UPDATE_REQUESTS = 2;
84 } // unnamed namespace
86 ///////////////////////////////////////////////////////////////////////////////////////////////////
88 ///////////////////////////////////////////////////////////////////////////////////////////////////
90 CombinedUpdateRenderController::CombinedUpdateRenderController( AdaptorInternalServices& adaptorInterfaces, const EnvironmentOptions& environmentOptions )
91 : mFpsTracker( environmentOptions ),
92 mUpdateStatusLogger( environmentOptions ),
93 mEventThreadSemaphore(),
94 mUpdateRenderThreadWaitCondition(),
95 mAdaptorInterfaces( adaptorInterfaces ),
96 mPerformanceInterface( adaptorInterfaces.GetPerformanceInterface() ),
97 mCore( adaptorInterfaces.GetCore() ),
98 mEnvironmentOptions( environmentOptions ),
99 mNotificationTrigger( adaptorInterfaces.GetProcessCoreEventsTrigger() ),
100 mSleepTrigger( NULL ),
101 mPreRenderCallback( NULL ),
102 mUpdateRenderThread( NULL ),
103 mDefaultFrameDelta( 0.0f ),
104 mDefaultFrameDurationMilliseconds( 0u ),
105 mDefaultFrameDurationNanoseconds( 0u ),
106 mDefaultHalfFrameNanoseconds( 0u ),
107 mUpdateRequestCount( 0u ),
109 mUpdateRenderRunCount( 0 ),
110 mDestroyUpdateRenderThread( FALSE ),
111 mUpdateRenderThreadCanSleep( FALSE ),
112 mPendingRequestUpdate( FALSE ),
113 mUseElapsedTimeAfterWait( FALSE ),
115 mDeletedSurface( nullptr ),
116 mPostRendering( FALSE ),
117 mSurfaceResized( FALSE ),
122 // Initialise frame delta/duration variables first
123 SetRenderRefreshRate( environmentOptions.GetRenderRefreshRate() );
125 // Set the thread-synchronization interface on the render-surface
126 Dali::RenderSurfaceInterface* currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
129 currentSurface->SetThreadSynchronization( *this );
132 TriggerEventFactoryInterface& triggerFactory = mAdaptorInterfaces.GetTriggerEventFactoryInterface();
133 mSleepTrigger = triggerFactory.CreateTriggerEvent( MakeCallback( this, &CombinedUpdateRenderController::ProcessSleepRequest ), TriggerEventInterface::KEEP_ALIVE_AFTER_TRIGGER );
135 sem_init( &mEventThreadSemaphore, 0, 0 ); // Initialize to 0 so that it just waits if sem_post has not been called
138 CombinedUpdateRenderController::~CombinedUpdateRenderController()
144 delete mPreRenderCallback;
145 delete mSleepTrigger;
148 void CombinedUpdateRenderController::Initialize()
152 // Ensure Update/Render Thread not already created
153 DALI_ASSERT_ALWAYS( ! mUpdateRenderThread );
155 // Create Update/Render Thread
156 mUpdateRenderThread = new pthread_t();
157 int error = pthread_create( mUpdateRenderThread, NULL, InternalUpdateRenderThreadEntryFunc, this );
158 DALI_ASSERT_ALWAYS( !error && "Return code from pthread_create() when creating UpdateRenderThread" );
160 // The Update/Render thread will now run and initialise the graphics interface etc. and will then wait for Start to be called
161 // When this function returns, the application initialisation on the event thread should occur
164 void CombinedUpdateRenderController::Start()
168 DALI_ASSERT_ALWAYS( !mRunning && mUpdateRenderThread );
170 // Wait until all threads created in Initialise are up and running
171 for( unsigned int i = 0; i < CREATED_THREAD_COUNT; ++i )
173 sem_wait( &mEventThreadSemaphore );
176 Integration::RenderSurface* currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
179 currentSurface->StartRender();
184 LOG_EVENT( "Startup Complete, starting Update/Render Thread" );
186 RunUpdateRenderThread( CONTINUOUS, false /* No animation progression */ );
188 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Start\n" );
191 void CombinedUpdateRenderController::Pause()
197 PauseUpdateRenderThread();
199 AddPerformanceMarker( PerformanceInterface::PAUSED );
201 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Pause\n" );
204 void CombinedUpdateRenderController::Resume()
208 if( !mRunning && IsUpdateRenderThreadPaused() )
210 LOG_EVENT( "Resuming" );
212 RunUpdateRenderThread( CONTINUOUS, true /* Animation progression required while we were paused */ );
214 AddPerformanceMarker( PerformanceInterface::RESUME );
219 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Resume\n" );
223 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Resume: Already resumed [%d, %d, %d]\n", mRunning, mUpdateRenderRunCount, mUpdateRenderThreadCanSleep );
227 void CombinedUpdateRenderController::Stop()
231 // Stop Rendering and the Update/Render Thread
232 Integration::RenderSurface* currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
235 currentSurface->StopRender();
238 StopUpdateRenderThread();
240 if( mUpdateRenderThread )
242 LOG_EVENT( "Destroying UpdateRenderThread" );
244 // wait for the thread to finish
245 pthread_join( *mUpdateRenderThread, NULL );
247 delete mUpdateRenderThread;
248 mUpdateRenderThread = NULL;
253 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Stop\n" );
256 void CombinedUpdateRenderController::RequestUpdate()
260 // Increment the update-request count to the maximum
261 if( mUpdateRequestCount < MAXIMUM_UPDATE_REQUESTS )
263 ++mUpdateRequestCount;
266 if( mRunning && IsUpdateRenderThreadPaused() )
268 LOG_EVENT( "Processing" );
270 RunUpdateRenderThread( CONTINUOUS, false /* No animation progression */ );
273 ConditionalWait::ScopedLock updateLock( mUpdateRenderThreadWaitCondition );
274 mPendingRequestUpdate = TRUE;
277 void CombinedUpdateRenderController::RequestUpdateOnce()
279 // Increment the update-request count to the maximum
280 if( mUpdateRequestCount < MAXIMUM_UPDATE_REQUESTS )
282 ++mUpdateRequestCount;
285 if( IsUpdateRenderThreadPaused() )
289 // Run Update/Render once
290 RunUpdateRenderThread( ONCE, false /* No animation progression */ );
294 void CombinedUpdateRenderController::ReplaceSurface( Dali::RenderSurfaceInterface* newSurface )
298 if( mUpdateRenderThread )
300 // Set the ThreadSyncronizationInterface on the new surface
301 newSurface->SetThreadSynchronization( *this );
303 LOG_EVENT( "Starting to replace the surface, event-thread blocked" );
305 // Start replacing the surface.
307 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
308 mPostRendering = FALSE; // Clear the post-rendering flag as Update/Render thread will replace the surface now
309 mNewSurface = newSurface;
310 mUpdateRenderThreadWaitCondition.Notify( lock );
313 // Wait until the surface has been replaced
314 sem_wait( &mEventThreadSemaphore );
316 LOG_EVENT( "Surface replaced, event-thread continuing" );
320 void CombinedUpdateRenderController::DeleteSurface( Dali::RenderSurfaceInterface* surface )
324 if( mUpdateRenderThread )
326 LOG_EVENT( "Starting to delete the surface, event-thread blocked" );
328 // Start replacing the surface.
330 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
331 mPostRendering = FALSE; // Clear the post-rendering flag as Update/Render thread will delete the surface now
332 mDeletedSurface = surface;
333 mUpdateRenderThreadWaitCondition.Notify( lock );
336 // Wait until the surface has been deleted
337 sem_wait( &mEventThreadSemaphore );
339 LOG_EVENT( "Surface deleted, event-thread continuing" );
343 void CombinedUpdateRenderController::ResizeSurface()
347 LOG_EVENT( "Resize the surface" );
350 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
351 mPostRendering = FALSE; // Clear the post-rendering flag as Update/Render thread will resize the surface now
352 mSurfaceResized = TRUE;
353 mUpdateRenderThreadWaitCondition.Notify( lock );
357 void CombinedUpdateRenderController::SetRenderRefreshRate( unsigned int numberOfFramesPerRender )
359 // Not protected by lock, but written to rarely so not worth adding a lock when reading
360 mDefaultFrameDelta = numberOfFramesPerRender * DEFAULT_FRAME_DURATION_IN_SECONDS;
361 mDefaultFrameDurationMilliseconds = uint64_t( numberOfFramesPerRender ) * DEFAULT_FRAME_DURATION_IN_MILLISECONDS;
362 mDefaultFrameDurationNanoseconds = uint64_t( numberOfFramesPerRender ) * DEFAULT_FRAME_DURATION_IN_NANOSECONDS;
363 mDefaultHalfFrameNanoseconds = mDefaultFrameDurationNanoseconds / 2u;
365 LOG_EVENT( "mDefaultFrameDelta(%.6f), mDefaultFrameDurationMilliseconds(%lld), mDefaultFrameDurationNanoseconds(%lld)", mDefaultFrameDelta, mDefaultFrameDurationMilliseconds, mDefaultFrameDurationNanoseconds );
368 void CombinedUpdateRenderController::SetPreRenderCallback( CallbackBase* callback )
371 LOG_EVENT( "Set PreRender Callback" );
373 ConditionalWait::ScopedLock updateLock( mUpdateRenderThreadWaitCondition );
374 if( mPreRenderCallback )
376 delete mPreRenderCallback;
378 mPreRenderCallback = callback;
381 ///////////////////////////////////////////////////////////////////////////////////////////////////
383 ///////////////////////////////////////////////////////////////////////////////////////////////////
385 void CombinedUpdateRenderController::RunUpdateRenderThread( int numberOfCycles, bool useElapsedTime )
387 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
388 mUpdateRenderRunCount = numberOfCycles;
389 mUpdateRenderThreadCanSleep = FALSE;
390 mUseElapsedTimeAfterWait = useElapsedTime;
391 LOG_COUNTER_EVENT( "mUpdateRenderRunCount: %d, mUseElapsedTimeAfterWait: %d", mUpdateRenderRunCount, mUseElapsedTimeAfterWait );
392 mUpdateRenderThreadWaitCondition.Notify( lock );
395 void CombinedUpdateRenderController::PauseUpdateRenderThread()
397 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
398 mUpdateRenderRunCount = 0;
401 void CombinedUpdateRenderController::StopUpdateRenderThread()
403 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
404 mDestroyUpdateRenderThread = TRUE;
405 mUpdateRenderThreadWaitCondition.Notify( lock );
408 bool CombinedUpdateRenderController::IsUpdateRenderThreadPaused()
410 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
411 return ( mUpdateRenderRunCount != CONTINUOUS ) || // Report paused if NOT continuously running
412 mUpdateRenderThreadCanSleep; // Report paused if sleeping
415 void CombinedUpdateRenderController::ProcessSleepRequest()
419 // Decrement Update request count
420 if( mUpdateRequestCount > 0 )
422 --mUpdateRequestCount;
425 // Can sleep if our update-request count is 0
426 // Update/Render thread can choose to carry on updating if it determines more update/renders are required
427 if( mUpdateRequestCount == 0 )
429 LOG_EVENT( "Going to sleep" );
431 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
432 mUpdateRenderThreadCanSleep = TRUE;
436 ///////////////////////////////////////////////////////////////////////////////////////////////////
437 // UPDATE/RENDER THREAD
438 ///////////////////////////////////////////////////////////////////////////////////////////////////
440 void CombinedUpdateRenderController::UpdateRenderThread()
442 SetThreadName("RenderThread\0");
444 // Install a function for logging
445 mEnvironmentOptions.InstallLogFunction();
447 // Install a function for tracing
448 mEnvironmentOptions.InstallTraceFunction();
450 LOG_UPDATE_RENDER( "THREAD CREATED" );
452 // Initialize EGL & OpenGL
453 Dali::DisplayConnection& displayConnection = mAdaptorInterfaces.GetDisplayConnectionInterface();
454 displayConnection.Initialize();
456 RenderSurfaceInterface* currentSurface = nullptr;
458 GraphicsInterface& graphics = mAdaptorInterfaces.GetGraphicsInterface();
459 EglGraphics* eglGraphics = static_cast<EglGraphics *>(&graphics);
461 // This will only be created once
462 EglInterface* eglInterface = &eglGraphics->GetEglInterface();
464 Internal::Adaptor::EglImplementation& eglImpl = static_cast<Internal::Adaptor::EglImplementation&>( *eglInterface );
466 // Try to use OpenGL es 3.0
467 // ChooseConfig returns false here when the device only support gles 2.0.
468 // Because eglChooseConfig with gles 3.0 setting fails when the device only support gles 2.0 and Our default setting is gles 3.0.
469 if( !eglImpl.ChooseConfig( true, COLOR_DEPTH_32 ) )
471 // Retry to use OpenGL es 2.0
472 eglGraphics->SetGlesVersion( 20 );
473 eglImpl.ChooseConfig( true, COLOR_DEPTH_32 );
476 // Check whether surfaceless context is supported
477 bool isSurfacelessContextSupported = eglImpl.IsSurfacelessContextSupported();
478 eglGraphics->SetIsSurfacelessContextSupported( isSurfacelessContextSupported );
480 if ( isSurfacelessContextSupported )
482 // Create a surfaceless OpenGL context for shared resources
483 eglImpl.CreateContext();
484 eglImpl.MakeContextCurrent( EGL_NO_SURFACE, eglImpl.GetContext() );
488 currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
491 currentSurface->InitializeGraphics();
492 currentSurface->MakeContextCurrent();
496 // Tell core it has a context
497 mCore.ContextCreated();
499 NotifyThreadInitialised();
502 uint64_t lastFrameTime;
503 TimeService::GetNanoseconds( lastFrameTime );
505 LOG_UPDATE_RENDER( "THREAD INITIALISED" );
507 bool useElapsedTime = true;
508 bool updateRequired = true;
509 uint64_t timeToSleepUntil = 0;
510 int extraFramesDropped = 0;
512 const unsigned int renderToFboInterval = mEnvironmentOptions.GetRenderToFboInterval();
513 const bool renderToFboEnabled = 0u != renderToFboInterval;
514 unsigned int frameCount = 0u;
516 while( UpdateRenderReady( useElapsedTime, updateRequired, timeToSleepUntil ) )
518 LOG_UPDATE_RENDER_TRACE;
520 // Performance statistics are logged upon a VSYNC tick so use this point for a VSync marker
521 AddPerformanceMarker( PerformanceInterface::VSYNC );
523 uint64_t currentFrameStartTime = 0;
524 TimeService::GetNanoseconds( currentFrameStartTime );
526 const uint64_t timeSinceLastFrame = currentFrameStartTime - lastFrameTime;
528 // Optional FPS Tracking when continuously rendering
529 if( useElapsedTime && mFpsTracker.Enabled() )
531 float absoluteTimeSinceLastRender = timeSinceLastFrame * NANOSECONDS_TO_SECOND;
532 mFpsTracker.Track( absoluteTimeSinceLastRender );
535 lastFrameTime = currentFrameStartTime; // Store frame start time
537 //////////////////////////////
539 //////////////////////////////
541 Integration::RenderSurface* newSurface = ShouldSurfaceBeReplaced();
542 if( DALI_UNLIKELY( newSurface ) )
544 LOG_UPDATE_RENDER_TRACE_FMT( "Replacing Surface" );
546 // This is designed for replacing pixmap surfaces, but should work for window as well
547 // we need to delete the surface and renderable (pixmap / window)
548 // Then create a new pixmap/window and new surface
549 // If the new surface has a different display connection, then the context will be lost
551 mAdaptorInterfaces.GetDisplayConnectionInterface().Initialize();
552 newSurface->InitializeGraphics();
553 newSurface->ReplaceGraphicsSurface();
557 const bool isRenderingToFbo = renderToFboEnabled && ( ( 0u == frameCount ) || ( 0u != frameCount % renderToFboInterval ) );
560 //////////////////////////////
562 //////////////////////////////
564 const unsigned int currentTime = currentFrameStartTime / NANOSECONDS_PER_MILLISECOND;
565 const unsigned int nextFrameTime = currentTime + mDefaultFrameDurationMilliseconds;
567 uint64_t noOfFramesSinceLastUpdate = 1;
568 float frameDelta = 0.0f;
571 // If using the elapsed time, then calculate frameDelta as a multiple of mDefaultFrameDelta
572 noOfFramesSinceLastUpdate += extraFramesDropped;
574 frameDelta = mDefaultFrameDelta * noOfFramesSinceLastUpdate;
576 LOG_UPDATE_RENDER( "timeSinceLastFrame(%llu) noOfFramesSinceLastUpdate(%u) frameDelta(%.6f)", timeSinceLastFrame, noOfFramesSinceLastUpdate, frameDelta );
578 Integration::UpdateStatus updateStatus;
580 AddPerformanceMarker( PerformanceInterface::UPDATE_START );
581 mCore.Update( frameDelta,
587 AddPerformanceMarker( PerformanceInterface::UPDATE_END );
589 unsigned int keepUpdatingStatus = updateStatus.KeepUpdating();
591 // Tell the event-thread to wake up (if asleep) and send a notification event to Core if required
592 if( updateStatus.NeedsNotification() )
594 mNotificationTrigger.Trigger();
595 LOG_UPDATE_RENDER( "Notification Triggered" );
599 bool shouldSurfaceBeResized = ShouldSurfaceBeResized();
600 if( DALI_UNLIKELY( shouldSurfaceBeResized ) )
602 if( updateStatus.SurfaceRectChanged() )
604 LOG_UPDATE_RENDER_TRACE_FMT( "Resizing Surface" );
609 // Optional logging of update/render status
610 mUpdateStatusLogger.Log( keepUpdatingStatus );
612 //////////////////////////////
614 //////////////////////////////
616 mAdaptorInterfaces.GetDisplayConnectionInterface().ConsumeEvents();
618 if( mPreRenderCallback != NULL )
620 bool keepCallback = CallbackBase::ExecuteReturn<bool>(*mPreRenderCallback);
623 delete mPreRenderCallback;
624 mPreRenderCallback = NULL;
628 if( eglImpl.IsSurfacelessContextSupported() )
630 // Make the shared surfaceless context as current before rendering
631 eglImpl.MakeContextCurrent( EGL_NO_SURFACE, eglImpl.GetContext() );
634 Integration::RenderStatus renderStatus;
636 AddPerformanceMarker( PerformanceInterface::RENDER_START );
637 mCore.Render( renderStatus, mForceClear );
639 //////////////////////////////
641 //////////////////////////////
643 Integration::RenderSurface* deletedSurface = ShouldSurfaceBeDeleted();
644 if( DALI_UNLIKELY( deletedSurface ) )
646 LOG_UPDATE_RENDER_TRACE_FMT( "Deleting Surface" );
648 mCore.SurfaceDeleted( deletedSurface );
653 AddPerformanceMarker( PerformanceInterface::RENDER_END );
657 // Trigger event thread to request Update/Render thread to sleep if update not required
658 if( ( Integration::KeepUpdating::NOT_REQUESTED == keepUpdatingStatus ) && !renderStatus.NeedsUpdate() )
660 mSleepTrigger->Trigger();
661 updateRequired = false;
662 LOG_UPDATE_RENDER( "Sleep Triggered" );
666 updateRequired = true;
669 //////////////////////////////
671 //////////////////////////////
673 extraFramesDropped = 0;
675 if (timeToSleepUntil == 0)
677 // If this is the first frame after the thread is initialized or resumed, we
678 // use the actual time the current frame starts from to calculate the time to
679 // sleep until the next frame.
680 timeToSleepUntil = currentFrameStartTime + mDefaultFrameDurationNanoseconds;
684 // Otherwise, always use the sleep-until time calculated in the last frame to
685 // calculate the time to sleep until the next frame. In this way, if there is
686 // any time gap between the current frame and the next frame, or if update or
687 // rendering in the current frame takes too much time so that the specified
688 // sleep-until time has already passed, it will try to keep the frames syncing
689 // by shortening the duration of the next frame.
690 timeToSleepUntil += mDefaultFrameDurationNanoseconds;
692 // Check the current time at the end of the frame
693 uint64_t currentFrameEndTime = 0;
694 TimeService::GetNanoseconds( currentFrameEndTime );
695 while ( currentFrameEndTime > timeToSleepUntil + mDefaultFrameDurationNanoseconds )
697 // We are more than one frame behind already, so just drop the next frames
698 // until the sleep-until time is later than the current time so that we can
700 timeToSleepUntil += mDefaultFrameDurationNanoseconds;
701 extraFramesDropped++;
705 // Render to FBO is intended to measure fps above 60 so sleep is not wanted.
706 if( 0u == renderToFboInterval )
708 // Sleep until at least the the default frame duration has elapsed. This will return immediately if the specified end-time has already passed.
709 TimeService::SleepUntil( timeToSleepUntil );
713 // Inform core of context destruction & shutdown EGL
714 mCore.ContextDestroyed();
715 currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
718 currentSurface->DestroySurface();
719 currentSurface = nullptr;
722 LOG_UPDATE_RENDER( "THREAD DESTROYED" );
724 // Uninstall the logging function
725 mEnvironmentOptions.UnInstallLogFunction();
728 bool CombinedUpdateRenderController::UpdateRenderReady( bool& useElapsedTime, bool updateRequired, uint64_t& timeToSleepUntil )
730 useElapsedTime = true;
732 ConditionalWait::ScopedLock updateLock( mUpdateRenderThreadWaitCondition );
733 while( ( ! mUpdateRenderRunCount || // Should try to wait if event-thread has paused the Update/Render thread
734 ( mUpdateRenderThreadCanSleep && ! updateRequired && ! mPendingRequestUpdate ) ) && // Ensure we wait if we're supposed to be sleeping AND do not require another update
735 ! mDestroyUpdateRenderThread && // Ensure we don't wait if the update-render-thread is supposed to be destroyed
736 ! mNewSurface && // Ensure we don't wait if we need to replace the surface
737 ! mDeletedSurface && // Ensure we don't wait if we need to delete the surface
738 ! mSurfaceResized ) // Ensure we don't wait if we need to resize the surface
740 LOG_UPDATE_RENDER( "WAIT: mUpdateRenderRunCount: %d", mUpdateRenderRunCount );
741 LOG_UPDATE_RENDER( " mUpdateRenderThreadCanSleep: %d, updateRequired: %d, mPendingRequestUpdate: %d", mUpdateRenderThreadCanSleep, updateRequired, mPendingRequestUpdate );
742 LOG_UPDATE_RENDER( " mDestroyUpdateRenderThread: %d", mDestroyUpdateRenderThread );
743 LOG_UPDATE_RENDER( " mNewSurface: %d", mNewSurface );
744 LOG_UPDATE_RENDER( " mDeletedSurface: %d", mDeletedSurface );
745 LOG_UPDATE_RENDER( " mSurfaceResized: %d", mSurfaceResized );
747 // Reset the time when the thread is waiting, so the sleep-until time for
748 // the first frame after resuming should be based on the actual start time
749 // of the first frame.
750 timeToSleepUntil = 0;
752 mUpdateRenderThreadWaitCondition.Wait( updateLock );
754 if( ! mUseElapsedTimeAfterWait )
756 useElapsedTime = false;
760 LOG_COUNTER_UPDATE_RENDER( "mUpdateRenderRunCount: %d", mUpdateRenderRunCount );
761 LOG_COUNTER_UPDATE_RENDER( "mUpdateRenderThreadCanSleep: %d, updateRequired: %d, mPendingRequestUpdate: %d", mUpdateRenderThreadCanSleep, updateRequired, mPendingRequestUpdate );
762 LOG_COUNTER_UPDATE_RENDER( "mDestroyUpdateRenderThread: %d", mDestroyUpdateRenderThread );
763 LOG_COUNTER_UPDATE_RENDER( "mNewSurface: %d", mNewSurface );
764 LOG_COUNTER_UPDATE_RENDER( "mDeletedSurface: %d", mDeletedSurface );
765 LOG_COUNTER_UPDATE_RENDER( "mSurfaceResized: %d", mSurfaceResized );
767 mUseElapsedTimeAfterWait = FALSE;
768 mUpdateRenderThreadCanSleep = FALSE;
769 mPendingRequestUpdate = FALSE;
771 // If we've been asked to run Update/Render cycles a finite number of times then decrement so we wait after the
772 // requested number of cycles
773 if( mUpdateRenderRunCount > 0 )
775 --mUpdateRenderRunCount;
778 // Keep the update-render thread alive if this thread is NOT to be destroyed
779 return ! mDestroyUpdateRenderThread;
782 Integration::RenderSurface* CombinedUpdateRenderController::ShouldSurfaceBeReplaced()
784 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
786 Integration::RenderSurface* newSurface = mNewSurface;
792 void CombinedUpdateRenderController::SurfaceReplaced()
794 // Just increment the semaphore
795 sem_post( &mEventThreadSemaphore );
798 Integration::RenderSurface* CombinedUpdateRenderController::ShouldSurfaceBeDeleted()
800 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
802 Integration::RenderSurface* deletedSurface = mDeletedSurface;
803 mDeletedSurface = NULL;
805 return deletedSurface;
808 void CombinedUpdateRenderController::SurfaceDeleted()
810 // Just increment the semaphore
811 sem_post( &mEventThreadSemaphore );
814 bool CombinedUpdateRenderController::ShouldSurfaceBeResized()
816 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
817 return mSurfaceResized;
820 void CombinedUpdateRenderController::SurfaceResized()
822 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
823 mSurfaceResized = FALSE;
826 ///////////////////////////////////////////////////////////////////////////////////////////////////
828 ///////////////////////////////////////////////////////////////////////////////////////////////////
830 void CombinedUpdateRenderController::NotifyThreadInitialised()
832 // Just increment the semaphore
833 sem_post( &mEventThreadSemaphore );
836 void CombinedUpdateRenderController::AddPerformanceMarker( PerformanceInterface::MarkerType type )
838 if( mPerformanceInterface )
840 mPerformanceInterface->AddMarker( type );
844 /////////////////////////////////////////////////////////////////////////////////////////////////
845 // POST RENDERING: EVENT THREAD
846 /////////////////////////////////////////////////////////////////////////////////////////////////
848 void CombinedUpdateRenderController::PostRenderComplete()
850 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
851 mPostRendering = FALSE;
852 mUpdateRenderThreadWaitCondition.Notify( lock );
855 ///////////////////////////////////////////////////////////////////////////////////////////////////
856 // POST RENDERING: RENDER THREAD
857 ///////////////////////////////////////////////////////////////////////////////////////////////////
859 void CombinedUpdateRenderController::PostRenderStarted()
861 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
862 mPostRendering = TRUE;
865 void CombinedUpdateRenderController::PostRenderWaitForCompletion()
867 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
868 while( mPostRendering &&
869 ! mNewSurface && // We should NOT wait if we're replacing the surface
870 ! mDeletedSurface && // We should NOT wait if we're deleting the surface
871 ! mSurfaceResized && // We should NOT wait if we're resizing the surface
872 ! mDestroyUpdateRenderThread )
874 mUpdateRenderThreadWaitCondition.Wait( lock );
878 } // namespace Adaptor
880 } // namespace Internal