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 mPostRendering( FALSE ),
116 mSurfaceResized( FALSE ),
121 // Initialise frame delta/duration variables first
122 SetRenderRefreshRate( environmentOptions.GetRenderRefreshRate() );
124 // Set the thread-synchronization interface on the render-surface
125 Dali::RenderSurfaceInterface* currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
128 currentSurface->SetThreadSynchronization( *this );
131 TriggerEventFactoryInterface& triggerFactory = mAdaptorInterfaces.GetTriggerEventFactoryInterface();
132 mSleepTrigger = triggerFactory.CreateTriggerEvent( MakeCallback( this, &CombinedUpdateRenderController::ProcessSleepRequest ), TriggerEventInterface::KEEP_ALIVE_AFTER_TRIGGER );
134 sem_init( &mEventThreadSemaphore, 0, 0 ); // Initialize to 0 so that it just waits if sem_post has not been called
137 CombinedUpdateRenderController::~CombinedUpdateRenderController()
143 delete mPreRenderCallback;
144 delete mSleepTrigger;
147 void CombinedUpdateRenderController::Initialize()
151 // Ensure Update/Render Thread not already created
152 DALI_ASSERT_ALWAYS( ! mUpdateRenderThread );
154 // Create Update/Render Thread
155 mUpdateRenderThread = new pthread_t();
156 int error = pthread_create( mUpdateRenderThread, NULL, InternalUpdateRenderThreadEntryFunc, this );
157 DALI_ASSERT_ALWAYS( !error && "Return code from pthread_create() when creating UpdateRenderThread" );
159 // The Update/Render thread will now run and initialise the graphics interface etc. and will then wait for Start to be called
160 // When this function returns, the application initialisation on the event thread should occur
163 void CombinedUpdateRenderController::Start()
167 DALI_ASSERT_ALWAYS( !mRunning && mUpdateRenderThread );
169 // Wait until all threads created in Initialise are up and running
170 for( unsigned int i = 0; i < CREATED_THREAD_COUNT; ++i )
172 sem_wait( &mEventThreadSemaphore );
175 Integration::RenderSurface* currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
178 currentSurface->StartRender();
183 LOG_EVENT( "Startup Complete, starting Update/Render Thread" );
185 RunUpdateRenderThread( CONTINUOUS, false /* No animation progression */ );
187 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Start\n" );
190 void CombinedUpdateRenderController::Pause()
196 PauseUpdateRenderThread();
198 AddPerformanceMarker( PerformanceInterface::PAUSED );
200 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Pause\n" );
203 void CombinedUpdateRenderController::Resume()
207 if( !mRunning && IsUpdateRenderThreadPaused() )
209 LOG_EVENT( "Resuming" );
211 RunUpdateRenderThread( CONTINUOUS, true /* Animation progression required while we were paused */ );
213 AddPerformanceMarker( PerformanceInterface::RESUME );
219 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Resume\n" );
222 void CombinedUpdateRenderController::Stop()
226 // Stop Rendering and the Update/Render Thread
227 Integration::RenderSurface* currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
230 currentSurface->StopRender();
233 StopUpdateRenderThread();
235 if( mUpdateRenderThread )
237 LOG_EVENT( "Destroying UpdateRenderThread" );
239 // wait for the thread to finish
240 pthread_join( *mUpdateRenderThread, NULL );
242 delete mUpdateRenderThread;
243 mUpdateRenderThread = NULL;
248 DALI_LOG_RELEASE_INFO( "CombinedUpdateRenderController::Stop\n" );
251 void CombinedUpdateRenderController::RequestUpdate()
255 // Increment the update-request count to the maximum
256 if( mUpdateRequestCount < MAXIMUM_UPDATE_REQUESTS )
258 ++mUpdateRequestCount;
261 if( mRunning && IsUpdateRenderThreadPaused() )
263 LOG_EVENT( "Processing" );
265 RunUpdateRenderThread( CONTINUOUS, false /* No animation progression */ );
268 ConditionalWait::ScopedLock updateLock( mUpdateRenderThreadWaitCondition );
269 mPendingRequestUpdate = TRUE;
272 void CombinedUpdateRenderController::RequestUpdateOnce()
274 // Increment the update-request count to the maximum
275 if( mUpdateRequestCount < MAXIMUM_UPDATE_REQUESTS )
277 ++mUpdateRequestCount;
280 if( IsUpdateRenderThreadPaused() )
284 // Run Update/Render once
285 RunUpdateRenderThread( ONCE, false /* No animation progression */ );
289 void CombinedUpdateRenderController::ReplaceSurface( Dali::RenderSurfaceInterface* newSurface )
293 // Set the ThreadSyncronizationInterface on the new surface
294 newSurface->SetThreadSynchronization( *this );
296 LOG_EVENT( "Starting to replace the surface, event-thread blocked" );
298 // Start replacing the surface.
300 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
301 mPostRendering = FALSE; // Clear the post-rendering flag as Update/Render thread will replace the surface now
302 mNewSurface = newSurface;
303 mUpdateRenderThreadWaitCondition.Notify( lock );
306 // Wait until the surface has been replaced
307 sem_wait( &mEventThreadSemaphore );
309 LOG_EVENT( "Surface replaced, event-thread continuing" );
312 void CombinedUpdateRenderController::ResizeSurface()
316 LOG_EVENT( "Resize the surface" );
319 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
320 mPostRendering = FALSE; // Clear the post-rendering flag as Update/Render thread will resize the surface now
321 mSurfaceResized = TRUE;
322 mUpdateRenderThreadWaitCondition.Notify( lock );
326 void CombinedUpdateRenderController::SetRenderRefreshRate( unsigned int numberOfFramesPerRender )
328 // Not protected by lock, but written to rarely so not worth adding a lock when reading
329 mDefaultFrameDelta = numberOfFramesPerRender * DEFAULT_FRAME_DURATION_IN_SECONDS;
330 mDefaultFrameDurationMilliseconds = uint64_t( numberOfFramesPerRender ) * DEFAULT_FRAME_DURATION_IN_MILLISECONDS;
331 mDefaultFrameDurationNanoseconds = uint64_t( numberOfFramesPerRender ) * DEFAULT_FRAME_DURATION_IN_NANOSECONDS;
332 mDefaultHalfFrameNanoseconds = mDefaultFrameDurationNanoseconds / 2u;
334 LOG_EVENT( "mDefaultFrameDelta(%.6f), mDefaultFrameDurationMilliseconds(%lld), mDefaultFrameDurationNanoseconds(%lld)", mDefaultFrameDelta, mDefaultFrameDurationMilliseconds, mDefaultFrameDurationNanoseconds );
337 void CombinedUpdateRenderController::SetPreRenderCallback( CallbackBase* callback )
340 LOG_EVENT( "Set PreRender Callback" );
342 ConditionalWait::ScopedLock updateLock( mUpdateRenderThreadWaitCondition );
343 if( mPreRenderCallback )
345 delete mPreRenderCallback;
347 mPreRenderCallback = callback;
350 ///////////////////////////////////////////////////////////////////////////////////////////////////
352 ///////////////////////////////////////////////////////////////////////////////////////////////////
354 void CombinedUpdateRenderController::RunUpdateRenderThread( int numberOfCycles, bool useElapsedTime )
356 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
357 mUpdateRenderRunCount = numberOfCycles;
358 mUpdateRenderThreadCanSleep = FALSE;
359 mUseElapsedTimeAfterWait = useElapsedTime;
360 LOG_COUNTER_EVENT( "mUpdateRenderRunCount: %d, mUseElapsedTimeAfterWait: %d", mUpdateRenderRunCount, mUseElapsedTimeAfterWait );
361 mUpdateRenderThreadWaitCondition.Notify( lock );
364 void CombinedUpdateRenderController::PauseUpdateRenderThread()
366 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
367 mUpdateRenderRunCount = 0;
370 void CombinedUpdateRenderController::StopUpdateRenderThread()
372 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
373 mDestroyUpdateRenderThread = TRUE;
374 mUpdateRenderThreadWaitCondition.Notify( lock );
377 bool CombinedUpdateRenderController::IsUpdateRenderThreadPaused()
379 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
380 return ( mUpdateRenderRunCount != CONTINUOUS ) || // Report paused if NOT continuously running
381 mUpdateRenderThreadCanSleep; // Report paused if sleeping
384 void CombinedUpdateRenderController::ProcessSleepRequest()
388 // Decrement Update request count
389 if( mUpdateRequestCount > 0 )
391 --mUpdateRequestCount;
394 // Can sleep if our update-request count is 0
395 // Update/Render thread can choose to carry on updating if it determines more update/renders are required
396 if( mUpdateRequestCount == 0 )
398 LOG_EVENT( "Going to sleep" );
400 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
401 mUpdateRenderThreadCanSleep = TRUE;
405 ///////////////////////////////////////////////////////////////////////////////////////////////////
406 // UPDATE/RENDER THREAD
407 ///////////////////////////////////////////////////////////////////////////////////////////////////
409 void CombinedUpdateRenderController::UpdateRenderThread()
411 SetThreadName("RenderThread\0");
413 // Install a function for logging
414 mEnvironmentOptions.InstallLogFunction();
416 // Install a function for tracing
417 mEnvironmentOptions.InstallTraceFunction();
419 LOG_UPDATE_RENDER( "THREAD CREATED" );
421 // Initialize EGL & OpenGL
422 Dali::DisplayConnection& displayConnection = mAdaptorInterfaces.GetDisplayConnectionInterface();
423 displayConnection.Initialize();
425 RenderSurfaceInterface* currentSurface = nullptr;
427 #if DALI_GLES_VERSION >= 30
429 GraphicsInterface& graphics = mAdaptorInterfaces.GetGraphicsInterface();
430 EglGraphics* eglGraphics = static_cast<EglGraphics *>(&graphics);
432 // This will only be created once
433 EglInterface* eglInterface = &eglGraphics->GetEglInterface();
435 Internal::Adaptor::EglImplementation& eglImpl = static_cast<Internal::Adaptor::EglImplementation&>( *eglInterface );
436 eglImpl.ChooseConfig( true, COLOR_DEPTH_32 ); // Always use this for shared context???
438 // Create a surfaceless OpenGL context for shared resources
439 eglImpl.CreateContext();
440 eglImpl.MakeContextCurrent( EGL_NO_SURFACE, eglImpl.GetContext() );
442 #else // DALI_GLES_VERSION >= 30
444 currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
447 currentSurface->InitializeGraphics();
448 currentSurface->MakeContextCurrent();
453 // Tell core it has a context
454 mCore.ContextCreated();
456 NotifyThreadInitialised();
459 uint64_t lastFrameTime;
460 TimeService::GetNanoseconds( lastFrameTime );
462 LOG_UPDATE_RENDER( "THREAD INITIALISED" );
464 bool useElapsedTime = true;
465 bool updateRequired = true;
466 uint64_t timeToSleepUntil = 0;
467 int extraFramesDropped = 0;
469 const unsigned int renderToFboInterval = mEnvironmentOptions.GetRenderToFboInterval();
470 const bool renderToFboEnabled = 0u != renderToFboInterval;
471 unsigned int frameCount = 0u;
473 while( UpdateRenderReady( useElapsedTime, updateRequired, timeToSleepUntil ) )
475 LOG_UPDATE_RENDER_TRACE;
477 // Performance statistics are logged upon a VSYNC tick so use this point for a VSync marker
478 AddPerformanceMarker( PerformanceInterface::VSYNC );
480 uint64_t currentFrameStartTime = 0;
481 TimeService::GetNanoseconds( currentFrameStartTime );
483 const uint64_t timeSinceLastFrame = currentFrameStartTime - lastFrameTime;
485 // Optional FPS Tracking when continuously rendering
486 if( useElapsedTime && mFpsTracker.Enabled() )
488 float absoluteTimeSinceLastRender = timeSinceLastFrame * NANOSECONDS_TO_SECOND;
489 mFpsTracker.Track( absoluteTimeSinceLastRender );
492 lastFrameTime = currentFrameStartTime; // Store frame start time
494 //////////////////////////////
496 //////////////////////////////
498 Integration::RenderSurface* newSurface = ShouldSurfaceBeReplaced();
499 if( DALI_UNLIKELY( newSurface ) )
501 LOG_UPDATE_RENDER_TRACE_FMT( "Replacing Surface" );
503 // This is designed for replacing pixmap surfaces, but should work for window as well
504 // we need to delete the surface and renderable (pixmap / window)
505 // Then create a new pixmap/window and new surface
506 // If the new surface has a different display connection, then the context will be lost
508 mAdaptorInterfaces.GetDisplayConnectionInterface().Initialize();
509 newSurface->InitializeGraphics();
510 newSurface->ReplaceGraphicsSurface();
514 const bool isRenderingToFbo = renderToFboEnabled && ( ( 0u == frameCount ) || ( 0u != frameCount % renderToFboInterval ) );
517 //////////////////////////////
519 //////////////////////////////
521 const unsigned int currentTime = currentFrameStartTime / NANOSECONDS_PER_MILLISECOND;
522 const unsigned int nextFrameTime = currentTime + mDefaultFrameDurationMilliseconds;
524 uint64_t noOfFramesSinceLastUpdate = 1;
525 float frameDelta = 0.0f;
528 // If using the elapsed time, then calculate frameDelta as a multiple of mDefaultFrameDelta
529 noOfFramesSinceLastUpdate += extraFramesDropped;
531 frameDelta = mDefaultFrameDelta * noOfFramesSinceLastUpdate;
533 LOG_UPDATE_RENDER( "timeSinceLastFrame(%llu) noOfFramesSinceLastUpdate(%u) frameDelta(%.6f)", timeSinceLastFrame, noOfFramesSinceLastUpdate, frameDelta );
535 Integration::UpdateStatus updateStatus;
537 AddPerformanceMarker( PerformanceInterface::UPDATE_START );
538 mCore.Update( frameDelta,
544 AddPerformanceMarker( PerformanceInterface::UPDATE_END );
546 unsigned int keepUpdatingStatus = updateStatus.KeepUpdating();
548 // Tell the event-thread to wake up (if asleep) and send a notification event to Core if required
549 if( updateStatus.NeedsNotification() )
551 mNotificationTrigger.Trigger();
552 LOG_UPDATE_RENDER( "Notification Triggered" );
556 bool shouldSurfaceBeResized = ShouldSurfaceBeResized();
557 if( DALI_UNLIKELY( shouldSurfaceBeResized ) )
559 if( updateStatus.SurfaceRectChanged() )
561 LOG_UPDATE_RENDER_TRACE_FMT( "Resizing Surface" );
566 // Optional logging of update/render status
567 mUpdateStatusLogger.Log( keepUpdatingStatus );
569 //////////////////////////////
571 //////////////////////////////
573 mAdaptorInterfaces.GetDisplayConnectionInterface().ConsumeEvents();
575 if( mPreRenderCallback != NULL )
577 bool keepCallback = CallbackBase::ExecuteReturn<bool>(*mPreRenderCallback);
580 delete mPreRenderCallback;
581 mPreRenderCallback = NULL;
585 #if DALI_GLES_VERSION >= 30
586 // Make the shared surfaceless context as current before rendering
587 eglImpl.MakeContextCurrent( EGL_NO_SURFACE, eglImpl.GetContext() );
590 Integration::RenderStatus renderStatus;
592 AddPerformanceMarker( PerformanceInterface::RENDER_START );
593 mCore.Render( renderStatus, mForceClear );
594 AddPerformanceMarker( PerformanceInterface::RENDER_END );
598 // Trigger event thread to request Update/Render thread to sleep if update not required
599 if( ( Integration::KeepUpdating::NOT_REQUESTED == keepUpdatingStatus ) && !renderStatus.NeedsUpdate() )
601 mSleepTrigger->Trigger();
602 updateRequired = false;
603 LOG_UPDATE_RENDER( "Sleep Triggered" );
607 updateRequired = true;
610 //////////////////////////////
612 //////////////////////////////
614 extraFramesDropped = 0;
616 if (timeToSleepUntil == 0)
618 // If this is the first frame after the thread is initialized or resumed, we
619 // use the actual time the current frame starts from to calculate the time to
620 // sleep until the next frame.
621 timeToSleepUntil = currentFrameStartTime + mDefaultFrameDurationNanoseconds;
625 // Otherwise, always use the sleep-until time calculated in the last frame to
626 // calculate the time to sleep until the next frame. In this way, if there is
627 // any time gap between the current frame and the next frame, or if update or
628 // rendering in the current frame takes too much time so that the specified
629 // sleep-until time has already passed, it will try to keep the frames syncing
630 // by shortening the duration of the next frame.
631 timeToSleepUntil += mDefaultFrameDurationNanoseconds;
633 // Check the current time at the end of the frame
634 uint64_t currentFrameEndTime = 0;
635 TimeService::GetNanoseconds( currentFrameEndTime );
636 while ( currentFrameEndTime > timeToSleepUntil + mDefaultFrameDurationNanoseconds )
638 // We are more than one frame behind already, so just drop the next frames
639 // until the sleep-until time is later than the current time so that we can
641 timeToSleepUntil += mDefaultFrameDurationNanoseconds;
642 extraFramesDropped++;
646 // Render to FBO is intended to measure fps above 60 so sleep is not wanted.
647 if( 0u == renderToFboInterval )
649 // Sleep until at least the the default frame duration has elapsed. This will return immediately if the specified end-time has already passed.
650 TimeService::SleepUntil( timeToSleepUntil );
654 // Inform core of context destruction & shutdown EGL
655 mCore.ContextDestroyed();
656 currentSurface = mAdaptorInterfaces.GetRenderSurfaceInterface();
659 currentSurface->DestroySurface();
660 currentSurface = nullptr;
663 LOG_UPDATE_RENDER( "THREAD DESTROYED" );
665 // Uninstall the logging function
666 mEnvironmentOptions.UnInstallLogFunction();
669 bool CombinedUpdateRenderController::UpdateRenderReady( bool& useElapsedTime, bool updateRequired, uint64_t& timeToSleepUntil )
671 useElapsedTime = true;
673 ConditionalWait::ScopedLock updateLock( mUpdateRenderThreadWaitCondition );
674 while( ( ! mUpdateRenderRunCount || // Should try to wait if event-thread has paused the Update/Render thread
675 ( mUpdateRenderThreadCanSleep && ! updateRequired && ! mPendingRequestUpdate ) ) && // Ensure we wait if we're supposed to be sleeping AND do not require another update
676 ! mDestroyUpdateRenderThread && // Ensure we don't wait if the update-render-thread is supposed to be destroyed
677 ! mNewSurface && // Ensure we don't wait if we need to replace the surface
678 ! mSurfaceResized ) // Ensure we don't wait if we need to resize the surface
680 LOG_UPDATE_RENDER( "WAIT: mUpdateRenderRunCount: %d", mUpdateRenderRunCount );
681 LOG_UPDATE_RENDER( " mUpdateRenderThreadCanSleep: %d, updateRequired: %d, mPendingRequestUpdate: %d", mUpdateRenderThreadCanSleep, updateRequired, mPendingRequestUpdate );
682 LOG_UPDATE_RENDER( " mDestroyUpdateRenderThread: %d", mDestroyUpdateRenderThread );
683 LOG_UPDATE_RENDER( " mNewSurface: %d", mNewSurface );
684 LOG_UPDATE_RENDER( " mSurfaceResized: %d", mSurfaceResized );
686 // Reset the time when the thread is waiting, so the sleep-until time for
687 // the first frame after resuming should be based on the actual start time
688 // of the first frame.
689 timeToSleepUntil = 0;
691 mUpdateRenderThreadWaitCondition.Wait( updateLock );
693 if( ! mUseElapsedTimeAfterWait )
695 useElapsedTime = false;
699 LOG_COUNTER_UPDATE_RENDER( "mUpdateRenderRunCount: %d", mUpdateRenderRunCount );
700 LOG_COUNTER_UPDATE_RENDER( "mUpdateRenderThreadCanSleep: %d, updateRequired: %d, mPendingRequestUpdate: %d", mUpdateRenderThreadCanSleep, updateRequired, mPendingRequestUpdate );
701 LOG_COUNTER_UPDATE_RENDER( "mDestroyUpdateRenderThread: %d", mDestroyUpdateRenderThread );
702 LOG_COUNTER_UPDATE_RENDER( "mNewSurface: %d", mNewSurface );
703 LOG_COUNTER_UPDATE_RENDER( "mSurfaceResized: %d", mSurfaceResized );
705 mUseElapsedTimeAfterWait = FALSE;
706 mUpdateRenderThreadCanSleep = FALSE;
707 mPendingRequestUpdate = FALSE;
709 // If we've been asked to run Update/Render cycles a finite number of times then decrement so we wait after the
710 // requested number of cycles
711 if( mUpdateRenderRunCount > 0 )
713 --mUpdateRenderRunCount;
716 // Keep the update-render thread alive if this thread is NOT to be destroyed
717 return ! mDestroyUpdateRenderThread;
720 Integration::RenderSurface* CombinedUpdateRenderController::ShouldSurfaceBeReplaced()
722 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
724 Integration::RenderSurface* newSurface = mNewSurface;
730 void CombinedUpdateRenderController::SurfaceReplaced()
732 // Just increment the semaphore
733 sem_post( &mEventThreadSemaphore );
736 bool CombinedUpdateRenderController::ShouldSurfaceBeResized()
738 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
739 return mSurfaceResized;
742 void CombinedUpdateRenderController::SurfaceResized()
744 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
745 mSurfaceResized = FALSE;
748 ///////////////////////////////////////////////////////////////////////////////////////////////////
750 ///////////////////////////////////////////////////////////////////////////////////////////////////
752 void CombinedUpdateRenderController::NotifyThreadInitialised()
754 // Just increment the semaphore
755 sem_post( &mEventThreadSemaphore );
758 void CombinedUpdateRenderController::AddPerformanceMarker( PerformanceInterface::MarkerType type )
760 if( mPerformanceInterface )
762 mPerformanceInterface->AddMarker( type );
766 /////////////////////////////////////////////////////////////////////////////////////////////////
767 // POST RENDERING: EVENT THREAD
768 /////////////////////////////////////////////////////////////////////////////////////////////////
770 void CombinedUpdateRenderController::PostRenderComplete()
772 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
773 mPostRendering = FALSE;
774 mUpdateRenderThreadWaitCondition.Notify( lock );
777 ///////////////////////////////////////////////////////////////////////////////////////////////////
778 // POST RENDERING: RENDER THREAD
779 ///////////////////////////////////////////////////////////////////////////////////////////////////
781 void CombinedUpdateRenderController::PostRenderStarted()
783 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
784 mPostRendering = TRUE;
787 void CombinedUpdateRenderController::PostRenderWaitForCompletion()
789 ConditionalWait::ScopedLock lock( mUpdateRenderThreadWaitCondition );
790 while( mPostRendering &&
791 ! mNewSurface && // We should NOT wait if we're replacing the surface
792 ! mSurfaceResized && // We should NOT wait if we're resizing the surface
793 ! mDestroyUpdateRenderThread )
795 mUpdateRenderThreadWaitCondition.Wait( lock );
799 } // namespace Adaptor
801 } // namespace Internal