dali/internal/render/common/render-manager.cpp

   1 /*
   2  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   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
  18 // CLASS HEADER
  19 #include <dali/internal/render/common/render-manager.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <memory.h>
  23
  24 // INTERNAL INCLUDES
  25 #include <dali/devel-api/threading/thread-pool.h>
  26 #include <dali/integration-api/core.h>
  27 #include <dali/internal/common/ordered-set.h>
  28
  29 #include <dali/internal/event/common/scene-impl.h>
  30
  31 #include <dali/internal/update/common/scene-graph-scene.h>
  32 #include <dali/internal/update/nodes/scene-graph-layer.h>
  33 #include <dali/internal/update/render-tasks/scene-graph-camera.h>
  34
  35 #include <dali/internal/common/owner-key-container.h>
  36
  37 #include <dali/internal/render/common/render-algorithms.h>
  38 #include <dali/internal/render/common/render-debug.h>
  39 #include <dali/internal/render/common/render-instruction.h>
  40 #include <dali/internal/render/common/render-tracker.h>
  41 #include <dali/internal/render/queue/render-queue.h>
  42 #include <dali/internal/render/renderers/pipeline-cache.h>
  43 #include <dali/internal/render/renderers/render-frame-buffer.h>
  44 #include <dali/internal/render/renderers/render-texture.h>
  45 #include <dali/internal/render/renderers/shader-cache.h>
  46 #include <dali/internal/render/renderers/uniform-buffer-manager.h>
  47 #include <dali/internal/render/renderers/uniform-buffer.h>
  48 #include <dali/internal/render/shaders/program-controller.h>
  49
  50 #include <memory>
  51
  52 namespace Dali
  53 {
  54 namespace Internal
  55 {
  56 namespace SceneGraph
  57 {
  58 #if defined(DEBUG_ENABLED)
  59 namespace
  60 {
  61 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_RENDER_MANAGER");
  62 } // unnamed namespace
  63 #endif
  64
  65 namespace
  66 {
  67 constexpr uint32_t CACHE_CLEAN_FRAME_COUNT = 600u; // 60fps * 10sec
  68
  69 inline Graphics::Rect2D RecalculateScissorArea(const Graphics::Rect2D& scissorArea, int orientation, const Rect<int32_t>& viewportRect)
  70 {
  71   Graphics::Rect2D newScissorArea;
  72
  73   if(orientation == 90)
  74   {
  75     newScissorArea.x      = viewportRect.height - (scissorArea.y + scissorArea.height);
  76     newScissorArea.y      = scissorArea.x;
  77     newScissorArea.width  = scissorArea.height;
  78     newScissorArea.height = scissorArea.width;
  79   }
  80   else if(orientation == 180)
  81   {
  82     newScissorArea.x      = viewportRect.width - (scissorArea.x + scissorArea.width);
  83     newScissorArea.y      = viewportRect.height - (scissorArea.y + scissorArea.height);
  84     newScissorArea.width  = scissorArea.width;
  85     newScissorArea.height = scissorArea.height;
  86   }
  87   else if(orientation == 270)
  88   {
  89     newScissorArea.x      = scissorArea.y;
  90     newScissorArea.y      = viewportRect.width - (scissorArea.x + scissorArea.width);
  91     newScissorArea.width  = scissorArea.height;
  92     newScissorArea.height = scissorArea.width;
  93   }
  94   else
  95   {
  96     newScissorArea.x      = scissorArea.x;
  97     newScissorArea.y      = scissorArea.y;
  98     newScissorArea.width  = scissorArea.width;
  99     newScissorArea.height = scissorArea.height;
 100   }
 101   return newScissorArea;
 102 }
 103
 104 inline Rect<int32_t> CalculateUpdateArea(RenderItem& item, BufferIndex renderBufferIndex, const Rect<int32_t>& viewportRect)
 105 {
 106   Vector4 updateArea;
 107   if(item.mNode && item.mNode->IsTextureUpdateAreaUsed() && item.mRenderer)
 108   {
 109     updateArea = item.mRenderer->GetTextureUpdateArea();
 110   }
 111   else
 112   {
 113     updateArea = item.mRenderer ? item.mRenderer->GetVisualTransformedUpdateArea(renderBufferIndex, item.mUpdateArea) : item.mUpdateArea;
 114   }
 115
 116   return RenderItem::CalculateViewportSpaceAABB(item.mModelViewMatrix, Vector3(updateArea.x, updateArea.y, 0.0f), Vector3(updateArea.z, updateArea.w, 0.0f), viewportRect.width, viewportRect.height);
 117 }
 118
 119 inline void AlignDamagedRect(Rect<int32_t>& rect)
 120 {
 121   const int left   = rect.x;
 122   const int top    = rect.y;
 123   const int right  = rect.x + rect.width;
 124   const int bottom = rect.y + rect.height;
 125   rect.x           = (left / 16) * 16;
 126   rect.y           = (top / 16) * 16;
 127   rect.width       = ((right + 16) / 16) * 16 - rect.x;
 128   rect.height      = ((bottom + 16) / 16) * 16 - rect.y;
 129 }
 130 } // namespace
 131
 132 /**
 133  * Structure to contain internal data
 134  */
 135 struct RenderManager::Impl
 136 {
 137   Impl(Graphics::Controller&               graphicsController,
 138        Integration::DepthBufferAvailable   depthBufferAvailableParam,
 139        Integration::StencilBufferAvailable stencilBufferAvailableParam,
 140        Integration::PartialUpdateAvailable partialUpdateAvailableParam)
 141   : graphicsController(graphicsController),
 142     renderAlgorithms(graphicsController),
 143     programController(graphicsController),
 144     shaderCache(graphicsController),
 145     depthBufferAvailable(depthBufferAvailableParam),
 146     stencilBufferAvailable(stencilBufferAvailableParam),
 147     partialUpdateAvailable(partialUpdateAvailableParam)
 148   {
 149     // Create thread pool with just one thread ( there may be a need to create more threads in the future ).
 150     threadPool = std::make_unique<Dali::ThreadPool>();
 151     threadPool->Initialize(1u);
 152
 153     uniformBufferManager = std::make_unique<Render::UniformBufferManager>(&graphicsController);
 154     pipelineCache        = std::make_unique<Render::PipelineCache>(graphicsController);
 155   }
 156
 157   ~Impl()
 158   {
 159     threadPool.reset(nullptr); // reset now to maintain correct destruction order
 160     rendererContainer.Clear(); // clear now before the pipeline cache is deleted
 161   }
 162
 163   void AddRenderTracker(Render::RenderTracker* renderTracker)
 164   {
 165     DALI_ASSERT_DEBUG(renderTracker != nullptr);
 166     mRenderTrackers.PushBack(renderTracker);
 167   }
 168
 169   void RemoveRenderTracker(Render::RenderTracker* renderTracker)
 170   {
 171     mRenderTrackers.EraseObject(renderTracker);
 172   }
 173
 174   void UpdateTrackers()
 175   {
 176     for(auto&& iter : mRenderTrackers)
 177     {
 178       iter->PollSyncObject();
 179     }
 180   }
 181
 182   // the order is important for destruction,
 183   Graphics::Controller&           graphicsController;
 184   RenderQueue                     renderQueue;      ///< A message queue for receiving messages from the update-thread.
 185   std::vector<SceneGraph::Scene*> sceneContainer;   ///< List of pointers to the scene graph objects of the scenes
 186   Render::RenderAlgorithms        renderAlgorithms; ///< The RenderAlgorithms object is used to action the renders required by a RenderInstruction
 187
 188   OrderedSet<Render::Sampler>         samplerContainer;      ///< List of owned samplers
 189   OrderedSet<Render::FrameBuffer>     frameBufferContainer;  ///< List of owned framebuffers
 190   OrderedSet<Render::VertexBuffer>    vertexBufferContainer; ///< List of owned vertex buffers
 191   OrderedSet<Render::Geometry>        geometryContainer;     ///< List of owned Geometries
 192   OwnerKeyContainer<Render::Renderer> rendererContainer;     ///< List of owned renderers
 193   OwnerKeyContainer<Render::Texture>  textureContainer;      ///< List of owned textures
 194
 195   OrderedSet<Render::RenderTracker> mRenderTrackers; ///< List of owned render trackers
 196
 197   OwnerKeyContainer<Render::Texture> textureDiscardQueue; ///< Discarded textures
 198
 199   ProgramController   programController; ///< Owner of the programs
 200   Render::ShaderCache shaderCache;       ///< The cache for the graphics shaders
 201
 202   std::unique_ptr<Render::UniformBufferManager> uniformBufferManager; ///< The uniform buffer manager
 203   std::unique_ptr<Render::PipelineCache>        pipelineCache;
 204
 205   Integration::DepthBufferAvailable   depthBufferAvailable;   ///< Whether the depth buffer is available
 206   Integration::StencilBufferAvailable stencilBufferAvailable; ///< Whether the stencil buffer is available
 207   Integration::PartialUpdateAvailable partialUpdateAvailable; ///< Whether the partial update is available
 208
 209   std::unique_ptr<Dali::ThreadPool> threadPool;        ///< The thread pool
 210   Vector<Render::TextureKey>        updatedTextures{}; ///< The updated texture list
 211
 212   uint32_t    frameCount{0u};                                                    ///< The current frame count
 213   BufferIndex renderBufferIndex{SceneGraphBuffers::INITIAL_UPDATE_BUFFER_INDEX}; ///< The index of the buffer to read from;
 214
 215   bool lastFrameWasRendered{false}; ///< Keeps track of the last frame being rendered due to having render instructions
 216   bool commandBufferSubmitted{false};
 217 };
 218
 219 RenderManager* RenderManager::New(Graphics::Controller&               graphicsController,
 220                                   Integration::DepthBufferAvailable   depthBufferAvailable,
 221                                   Integration::StencilBufferAvailable stencilBufferAvailable,
 222                                   Integration::PartialUpdateAvailable partialUpdateAvailable)
 223 {
 224   auto* manager  = new RenderManager;
 225   manager->mImpl = new Impl(graphicsController,
 226                             depthBufferAvailable,
 227                             stencilBufferAvailable,
 228                             partialUpdateAvailable);
 229   return manager;
 230 }
 231
 232 RenderManager::RenderManager()
 233 : mImpl(nullptr)
 234 {
 235 }
 236
 237 RenderManager::~RenderManager()
 238 {
 239   delete mImpl;
 240 }
 241
 242 RenderQueue& RenderManager::GetRenderQueue()
 243 {
 244   return mImpl->renderQueue;
 245 }
 246
 247 void RenderManager::SetShaderSaver(ShaderSaver& upstream)
 248 {
 249 }
 250
 251 void RenderManager::AddRenderer(const Render::RendererKey& renderer)
 252 {
 253   // Initialize the renderer as we are now in render thread
 254   renderer->Initialize(mImpl->graphicsController, mImpl->programController, mImpl->shaderCache, *(mImpl->uniformBufferManager.get()), *(mImpl->pipelineCache.get()));
 255
 256   mImpl->rendererContainer.PushBack(renderer);
 257 }
 258
 259 void RenderManager::RemoveRenderer(const Render::RendererKey& renderer)
 260 {
 261   mImpl->rendererContainer.EraseKey(renderer);
 262 }
 263
 264 void RenderManager::AddSampler(OwnerPointer<Render::Sampler>& sampler)
 265 {
 266   sampler->Initialize(mImpl->graphicsController);
 267   mImpl->samplerContainer.PushBack(sampler.Release());
 268 }
 269
 270 void RenderManager::RemoveSampler(Render::Sampler* sampler)
 271 {
 272   mImpl->samplerContainer.EraseObject(sampler);
 273 }
 274
 275 void RenderManager::AddTexture(const Render::TextureKey& textureKey)
 276 {
 277   DALI_ASSERT_DEBUG(textureKey && "Trying to add empty texture key");
 278
 279   textureKey->Initialize(mImpl->graphicsController, *this);
 280   mImpl->textureContainer.PushBack(textureKey);
 281   mImpl->updatedTextures.PushBack(textureKey);
 282 }
 283
 284 void RenderManager::RemoveTexture(const Render::TextureKey& textureKey)
 285 {
 286   DALI_ASSERT_DEBUG(textureKey && "Trying to remove empty texture key");
 287
 288   // Find the texture, use std::find so we can do the erase by iterator safely
 289   auto iter = std::find(mImpl->textureContainer.Begin(), mImpl->textureContainer.End(), textureKey);
 290
 291   if(iter != mImpl->textureContainer.End())
 292   {
 293     // Destroy texture.
 294     textureKey->Destroy();
 295
 296     // Transfer ownership to the discard queue, this keeps the object alive, until the render-thread has finished with it
 297     mImpl->textureDiscardQueue.PushBack(mImpl->textureContainer.Release(iter));
 298   }
 299 }
 300
 301 void RenderManager::UploadTexture(const Render::TextureKey& textureKey, PixelDataPtr pixelData, const Graphics::UploadParams& params)
 302 {
 303   DALI_ASSERT_DEBUG(textureKey && "Trying to upload to empty texture key");
 304   textureKey->Upload(pixelData, params);
 305
 306   mImpl->updatedTextures.PushBack(textureKey);
 307 }
 308
 309 void RenderManager::GenerateMipmaps(const Render::TextureKey& textureKey)
 310 {
 311   DALI_ASSERT_DEBUG(textureKey && "Trying to generate mipmaps on empty texture key");
 312   textureKey->GenerateMipmaps();
 313
 314   mImpl->updatedTextures.PushBack(textureKey);
 315 }
 316
 317 void RenderManager::SetTextureSize(const Render::TextureKey& textureKey, const Dali::ImageDimensions& size)
 318 {
 319   DALI_ASSERT_DEBUG(textureKey && "Trying to set size on empty texture key");
 320   textureKey->SetWidth(size.GetWidth());
 321   textureKey->SetHeight(size.GetHeight());
 322 }
 323
 324 void RenderManager::SetTextureFormat(const Render::TextureKey& textureKey, Dali::Pixel::Format pixelFormat)
 325 {
 326   DALI_ASSERT_DEBUG(textureKey && "Trying to set pixel format on empty texture key");
 327   textureKey->SetPixelFormat(pixelFormat);
 328 }
 329
 330 void RenderManager::SetTextureUpdated(const Render::TextureKey& textureKey)
 331 {
 332   DALI_ASSERT_DEBUG(textureKey && "Trying to set updated on empty texture key");
 333   textureKey->SetUpdated(true);
 334
 335   mImpl->updatedTextures.PushBack(textureKey);
 336 }
 337
 338 void RenderManager::SetFilterMode(Render::Sampler* sampler, uint32_t minFilterMode, uint32_t magFilterMode)
 339 {
 340   sampler->SetFilterMode(static_cast<Dali::FilterMode::Type>(minFilterMode),
 341                          static_cast<Dali::FilterMode::Type>(magFilterMode));
 342 }
 343
 344 void RenderManager::SetWrapMode(Render::Sampler* sampler, uint32_t rWrapMode, uint32_t sWrapMode, uint32_t tWrapMode)
 345 {
 346   sampler->SetWrapMode(static_cast<Dali::WrapMode::Type>(rWrapMode),
 347                        static_cast<Dali::WrapMode::Type>(sWrapMode),
 348                        static_cast<Dali::WrapMode::Type>(tWrapMode));
 349 }
 350
 351 void RenderManager::AddFrameBuffer(OwnerPointer<Render::FrameBuffer>& frameBuffer)
 352 {
 353   Render::FrameBuffer* frameBufferPtr = frameBuffer.Release();
 354   mImpl->frameBufferContainer.PushBack(frameBufferPtr);
 355   frameBufferPtr->Initialize(mImpl->graphicsController);
 356 }
 357
 358 void RenderManager::RemoveFrameBuffer(Render::FrameBuffer* frameBuffer)
 359 {
 360   DALI_ASSERT_DEBUG(nullptr != frameBuffer);
 361
 362   // Find the framebuffer, use OrderedSet.Find so we can safely do the erase
 363   auto iter = mImpl->frameBufferContainer.Find(frameBuffer);
 364
 365   if(iter != mImpl->frameBufferContainer.End())
 366   {
 367     frameBuffer->Destroy();
 368     mImpl->frameBufferContainer.Erase(iter); // frameBuffer found; now destroy it
 369   }
 370 }
 371
 372 void RenderManager::InitializeScene(SceneGraph::Scene* scene)
 373 {
 374   scene->Initialize(mImpl->graphicsController, mImpl->depthBufferAvailable, mImpl->stencilBufferAvailable);
 375   mImpl->sceneContainer.push_back(scene);
 376   mImpl->uniformBufferManager->RegisterScene(scene);
 377 }
 378
 379 void RenderManager::UninitializeScene(SceneGraph::Scene* scene)
 380 {
 381   mImpl->uniformBufferManager->UnregisterScene(scene);
 382   auto iter = std::find(mImpl->sceneContainer.begin(), mImpl->sceneContainer.end(), scene);
 383   if(iter != mImpl->sceneContainer.end())
 384   {
 385     mImpl->sceneContainer.erase(iter);
 386   }
 387 }
 388
 389 void RenderManager::SurfaceReplaced(SceneGraph::Scene* scene)
 390 {
 391   scene->Initialize(mImpl->graphicsController, mImpl->depthBufferAvailable, mImpl->stencilBufferAvailable);
 392 }
 393
 394 void RenderManager::AttachColorTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel, uint32_t layer)
 395 {
 396   frameBuffer->AttachColorTexture(texture, mipmapLevel, layer);
 397 }
 398
 399 void RenderManager::AttachDepthTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 400 {
 401   frameBuffer->AttachDepthTexture(texture, mipmapLevel);
 402 }
 403
 404 void RenderManager::AttachDepthStencilTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 405 {
 406   frameBuffer->AttachDepthStencilTexture(texture, mipmapLevel);
 407 }
 408
 409 void RenderManager::SetMultiSamplingLevelToFrameBuffer(Render::FrameBuffer* frameBuffer, uint8_t multiSamplingLevel)
 410 {
 411   frameBuffer->SetMultiSamplingLevel(multiSamplingLevel);
 412 }
 413
 414 void RenderManager::AddVertexBuffer(OwnerPointer<Render::VertexBuffer>& vertexBuffer)
 415 {
 416   mImpl->vertexBufferContainer.PushBack(vertexBuffer.Release());
 417 }
 418
 419 void RenderManager::RemoveVertexBuffer(Render::VertexBuffer* vertexBuffer)
 420 {
 421   mImpl->vertexBufferContainer.EraseObject(vertexBuffer);
 422 }
 423
 424 void RenderManager::SetVertexBufferFormat(Render::VertexBuffer* vertexBuffer, OwnerPointer<Render::VertexBuffer::Format>& format)
 425 {
 426   vertexBuffer->SetFormat(format.Release());
 427 }
 428
 429 void RenderManager::SetVertexBufferData(Render::VertexBuffer* vertexBuffer, OwnerPointer<Vector<uint8_t>>& data, uint32_t size)
 430 {
 431   vertexBuffer->SetData(data.Release(), size);
 432 }
 433
 434 void RenderManager::SetVertexBufferUpdateCallback(Render::VertexBuffer* vertexBuffer, Dali::VertexBufferUpdateCallback* callback)
 435 {
 436   vertexBuffer->SetVertexBufferUpdateCallback(callback);
 437 }
 438
 439 void RenderManager::SetIndexBuffer(Render::Geometry* geometry, Render::Geometry::Uint16ContainerType& indices)
 440 {
 441   geometry->SetIndexBuffer(indices);
 442 }
 443
 444 void RenderManager::SetIndexBuffer(Render::Geometry* geometry, Render::Geometry::Uint32ContainerType& indices)
 445 {
 446   geometry->SetIndexBuffer(indices);
 447 }
 448
 449 void RenderManager::AddGeometry(OwnerPointer<Render::Geometry>& geometry)
 450 {
 451   mImpl->geometryContainer.PushBack(geometry.Release());
 452 }
 453
 454 void RenderManager::RemoveGeometry(Render::Geometry* geometry)
 455 {
 456   mImpl->geometryContainer.EraseObject(geometry);
 457 }
 458
 459 void RenderManager::AttachVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 460 {
 461   geometry->AddVertexBuffer(vertexBuffer);
 462 }
 463
 464 void RenderManager::RemoveVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 465 {
 466   geometry->RemoveVertexBuffer(vertexBuffer);
 467 }
 468
 469 void RenderManager::SetGeometryType(Render::Geometry* geometry, uint32_t geometryType)
 470 {
 471   geometry->SetType(Render::Geometry::Type(geometryType));
 472 }
 473
 474 void RenderManager::AddRenderTracker(Render::RenderTracker* renderTracker)
 475 {
 476   mImpl->AddRenderTracker(renderTracker);
 477 }
 478
 479 void RenderManager::RemoveRenderTracker(Render::RenderTracker* renderTracker)
 480 {
 481   mImpl->RemoveRenderTracker(renderTracker);
 482 }
 483
 484 void RenderManager::PreRender(Integration::RenderStatus& status, bool forceClear)
 485 {
 486   DALI_PRINT_RENDER_START(mImpl->renderBufferIndex);
 487   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "\n\nNewFrame %d\n", mImpl->frameCount);
 488
 489   // Increment the frame count at the beginning of each frame
 490   ++mImpl->frameCount;
 491
 492   // Process messages queued during previous update
 493   mImpl->renderQueue.ProcessMessages(mImpl->renderBufferIndex);
 494
 495   uint32_t totalInstructionCount = 0u;
 496   for(auto& i : mImpl->sceneContainer)
 497   {
 498     totalInstructionCount += i->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 499   }
 500
 501   const bool haveInstructions = totalInstructionCount > 0u;
 502
 503   DALI_LOG_INFO(gLogFilter, Debug::General, "Render: haveInstructions(%s) || mImpl->lastFrameWasRendered(%s) || forceClear(%s)\n", haveInstructions ? "true" : "false", mImpl->lastFrameWasRendered ? "true" : "false", forceClear ? "true" : "false");
 504
 505   // Only render if we have instructions to render, or the last frame was rendered (and therefore a clear is required).
 506   if(haveInstructions || mImpl->lastFrameWasRendered || forceClear)
 507   {
 508     DALI_LOG_INFO(gLogFilter, Debug::General, "Render: Processing\n");
 509
 510     // Upload the geometries
 511     for(auto&& geom : mImpl->geometryContainer)
 512     {
 513       geom->Upload(mImpl->graphicsController);
 514     }
 515   }
 516
 517   // Reset pipeline cache before rendering
 518   mImpl->pipelineCache->PreRender();
 519
 520   // Let we collect reference counts during CACHE_CLEAN_FRAME_COUNT frames.
 521   if(mImpl->frameCount % CACHE_CLEAN_FRAME_COUNT == 1)
 522   {
 523     mImpl->programController.ResetReferenceCount();
 524     mImpl->shaderCache.ResetReferenceCount();
 525   }
 526
 527   mImpl->commandBufferSubmitted = false;
 528 }
 529
 530 void RenderManager::PreRender(Integration::Scene& scene, std::vector<Rect<int>>& damagedRects)
 531 {
 532   if(mImpl->partialUpdateAvailable != Integration::PartialUpdateAvailable::TRUE)
 533   {
 534     return;
 535   }
 536
 537   Internal::Scene&   sceneInternal = GetImplementation(scene);
 538   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 539
 540   if(!sceneObject || sceneObject->IsRenderingSkipped())
 541   {
 542     // We don't need to calculate dirty rects
 543     return;
 544   }
 545
 546   class DamagedRectsCleaner
 547   {
 548   public:
 549     explicit DamagedRectsCleaner(std::vector<Rect<int>>& damagedRects, Rect<int>& surfaceRect)
 550     : mDamagedRects(damagedRects),
 551       mSurfaceRect(surfaceRect),
 552       mCleanOnReturn(true)
 553     {
 554     }
 555
 556     void SetCleanOnReturn(bool cleanOnReturn)
 557     {
 558       mCleanOnReturn = cleanOnReturn;
 559     }
 560
 561     ~DamagedRectsCleaner()
 562     {
 563       if(mCleanOnReturn)
 564       {
 565         mDamagedRects.clear();
 566         mDamagedRects.push_back(mSurfaceRect);
 567       }
 568     }
 569
 570   private:
 571     std::vector<Rect<int>>& mDamagedRects;
 572     Rect<int>               mSurfaceRect;
 573     bool                    mCleanOnReturn;
 574   };
 575
 576   Rect<int32_t> surfaceRect = sceneObject->GetSurfaceRect();
 577
 578   // Clean collected dirty/damaged rects on exit if 3d layer or 3d node or other conditions.
 579   DamagedRectsCleaner damagedRectCleaner(damagedRects, surfaceRect);
 580   bool                cleanDamagedRect = false;
 581
 582   Scene::ItemsDirtyRectsContainer& itemsDirtyRects = sceneObject->GetItemsDirtyRects();
 583
 584   if(!sceneObject->IsPartialUpdateEnabled())
 585   {
 586     // Clear all dirty rects
 587     // The rects will be added when partial updated is enabled again
 588     itemsDirtyRects.clear();
 589     return;
 590   }
 591
 592   // Mark previous dirty rects in the std::unordered_map.
 593   for(auto& dirtyRectPair : itemsDirtyRects)
 594   {
 595     dirtyRectPair.second.visited = false;
 596   }
 597
 598   uint32_t instructionCount = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 599   for(uint32_t i = 0; i < instructionCount; ++i)
 600   {
 601     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 602
 603     if(instruction.mFrameBuffer)
 604     {
 605       cleanDamagedRect = true;
 606       continue; // TODO: reset, we don't deal with render tasks with framebuffers (for now)
 607     }
 608
 609     const Camera* camera = instruction.GetCamera();
 610     if(camera && camera->mType == Camera::DEFAULT_TYPE && camera->mTargetPosition == Camera::DEFAULT_TARGET_POSITION)
 611     {
 612       Vector3    position;
 613       Vector3    scale;
 614       Quaternion orientation;
 615       camera->GetWorldMatrix(mImpl->renderBufferIndex).GetTransformComponents(position, orientation, scale);
 616
 617       Vector3 orientationAxis;
 618       Radian  orientationAngle;
 619       orientation.ToAxisAngle(orientationAxis, orientationAngle);
 620
 621       if(position.x > Math::MACHINE_EPSILON_10000 ||
 622          position.y > Math::MACHINE_EPSILON_10000 ||
 623          orientationAxis != Vector3(0.0f, 1.0f, 0.0f) ||
 624          orientationAngle != ANGLE_180 ||
 625          scale != Vector3(1.0f, 1.0f, 1.0f))
 626       {
 627         cleanDamagedRect = true;
 628         continue;
 629       }
 630     }
 631     else
 632     {
 633       cleanDamagedRect = true;
 634       continue;
 635     }
 636
 637     Rect<int32_t> viewportRect;
 638     if(instruction.mIsViewportSet)
 639     {
 640       const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 641       viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 642       if(viewportRect.IsEmpty() || !viewportRect.IsValid())
 643       {
 644         cleanDamagedRect = true;
 645         continue; // just skip funny use cases for now, empty viewport means it is set somewhere else
 646       }
 647     }
 648     else
 649     {
 650       viewportRect = surfaceRect;
 651     }
 652
 653     const Matrix* viewMatrix       = instruction.GetViewMatrix(mImpl->renderBufferIndex);
 654     const Matrix* projectionMatrix = instruction.GetProjectionMatrix(mImpl->renderBufferIndex);
 655     if(viewMatrix && projectionMatrix)
 656     {
 657       const RenderListContainer::SizeType count = instruction.RenderListCount();
 658       for(RenderListContainer::SizeType index = 0u; index < count; ++index)
 659       {
 660         const RenderList* renderList = instruction.GetRenderList(index);
 661         if(renderList)
 662         {
 663           if(!renderList->IsEmpty())
 664           {
 665             const std::size_t listCount = renderList->Count();
 666             for(uint32_t listIndex = 0u; listIndex < listCount; ++listIndex)
 667             {
 668               RenderItem& item = renderList->GetItem(listIndex);
 669               // If the item does 3D transformation, make full update
 670               if(item.mUpdateArea == Vector4::ZERO)
 671               {
 672                 cleanDamagedRect = true;
 673
 674                 // Save the full rect in the damaged list. We need it when this item is removed
 675                 DirtyRectKey dirtyRectKey(item.mNode, item.mRenderer);
 676                 auto         dirtyRectPos = itemsDirtyRects.find(dirtyRectKey);
 677                 if(dirtyRectPos != itemsDirtyRects.end())
 678                 {
 679                   // Replace the rect
 680                   dirtyRectPos->second.visited = true;
 681                   dirtyRectPos->second.rect    = surfaceRect;
 682                 }
 683                 else
 684                 {
 685                   // Else, just insert the new dirtyrect
 686                   itemsDirtyRects.insert({dirtyRectKey, surfaceRect});
 687                 }
 688                 continue;
 689               }
 690
 691               Rect<int>    rect;
 692               DirtyRectKey dirtyRectKey(item.mNode, item.mRenderer);
 693               // If the item refers to updated node or renderer.
 694               if(item.mIsUpdated ||
 695                  (item.mNode &&
 696                   (item.mNode->Updated() || (item.mRenderer && item.mRenderer->Updated()))))
 697               {
 698                 item.mIsUpdated = false;
 699
 700                 rect = CalculateUpdateArea(item, mImpl->renderBufferIndex, viewportRect);
 701                 if(rect.IsValid() && rect.Intersect(viewportRect) && !rect.IsEmpty())
 702                 {
 703                   AlignDamagedRect(rect);
 704
 705                   // Found valid dirty rect.
 706                   auto dirtyRectPos = itemsDirtyRects.find(dirtyRectKey);
 707                   if(dirtyRectPos != itemsDirtyRects.end())
 708                   {
 709                     Rect<int> currentRect = rect;
 710
 711                     // Same item, merge it with the previous rect
 712                     rect.Merge(dirtyRectPos->second.rect);
 713
 714                     // Replace the rect as current
 715                     dirtyRectPos->second.visited = true;
 716                     dirtyRectPos->second.rect    = currentRect;
 717                   }
 718                   else
 719                   {
 720                     // Else, just insert the new dirtyrect
 721                     itemsDirtyRects.insert({dirtyRectKey, rect});
 722                   }
 723
 724                   damagedRects.push_back(rect);
 725                 }
 726               }
 727               else
 728               {
 729                 // 1. The item is not dirty, the node and renderer referenced by the item are still exist.
 730                 // 2. Mark the related dirty rects as visited so they will not be removed below.
 731                 auto dirtyRectPos = itemsDirtyRects.find(dirtyRectKey);
 732                 if(dirtyRectPos != itemsDirtyRects.end())
 733                 {
 734                   dirtyRectPos->second.visited = true;
 735                 }
 736                 else
 737                 {
 738                   // The item is not in the list for some reason. Add the current rect!
 739                   rect = CalculateUpdateArea(item, mImpl->renderBufferIndex, viewportRect);
 740                   if(rect.IsValid() && rect.Intersect(viewportRect) && !rect.IsEmpty())
 741                   {
 742                     AlignDamagedRect(rect);
 743
 744                     itemsDirtyRects.insert({dirtyRectKey, rect});
 745                   }
 746                   cleanDamagedRect = true; // And make full update at this frame
 747                 }
 748               }
 749             }
 750           }
 751         }
 752       }
 753     }
 754   }
 755
 756   // Check removed nodes or removed renderers dirty rects
 757   // Note, std::unordered_map end iterator is validate if we call erase.
 758   for(auto iter = itemsDirtyRects.cbegin(), iterEnd = itemsDirtyRects.cend(); iter != iterEnd;)
 759   {
 760     if(!iter->second.visited)
 761     {
 762       damagedRects.push_back(iter->second.rect);
 763       iter = itemsDirtyRects.erase(iter);
 764     }
 765     else
 766     {
 767       ++iter;
 768     }
 769   }
 770
 771   if(sceneObject->IsNeededFullUpdate())
 772   {
 773     cleanDamagedRect = true; // And make full update at this frame
 774   }
 775
 776   if(!cleanDamagedRect)
 777   {
 778     damagedRectCleaner.SetCleanOnReturn(false);
 779   }
 780 }
 781
 782 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo)
 783 {
 784   SceneGraph::Scene* sceneObject = GetImplementation(scene).GetSceneObject();
 785   if(!sceneObject)
 786   {
 787     return;
 788   }
 789
 790   Rect<int> clippingRect = sceneObject->GetSurfaceRect();
 791   RenderScene(status, scene, renderToFbo, clippingRect);
 792 }
 793
 794 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo, Rect<int>& clippingRect)
 795 {
 796   if(mImpl->partialUpdateAvailable == Integration::PartialUpdateAvailable::TRUE && !renderToFbo && clippingRect.IsEmpty())
 797   {
 798     // ClippingRect is empty. Skip rendering
 799     return;
 800   }
 801
 802   // Reset main algorithms command buffer
 803   mImpl->renderAlgorithms.ResetCommandBuffer();
 804
 805   auto mainCommandBuffer = mImpl->renderAlgorithms.GetMainCommandBuffer();
 806
 807   Internal::Scene&   sceneInternal = GetImplementation(scene);
 808   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 809   if(!sceneObject)
 810   {
 811     return;
 812   }
 813
 814   uint32_t instructionCount = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 815
 816   std::vector<Graphics::RenderTarget*> targetstoPresent;
 817
 818   Rect<int32_t> surfaceRect = sceneObject->GetSurfaceRect();
 819   if(clippingRect == surfaceRect)
 820   {
 821     // Full rendering case
 822     // Make clippingRect empty because we're doing full rendering now if the clippingRect is empty.
 823     // To reduce side effects, keep this logic now.
 824     clippingRect = Rect<int>();
 825   }
 826
 827   // Prefetch programs before we start rendering so reflection is
 828   // ready, and we can pull exact size of UBO needed (no need to resize during drawing)
 829   auto totalSizeCPU = 0u;
 830   auto totalSizeGPU = 0u;
 831
 832   for(uint32_t i = 0; i < instructionCount; ++i)
 833   {
 834     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 835
 836     if((instruction.mFrameBuffer != nullptr && renderToFbo) ||
 837        (instruction.mFrameBuffer == nullptr && !renderToFbo))
 838     {
 839       for(auto j = 0u; j < instruction.RenderListCount(); ++j)
 840       {
 841         const auto& renderList = instruction.GetRenderList(j);
 842         for(auto k = 0u; k < renderList->Count(); ++k)
 843         {
 844           auto& item = renderList->GetItem(k);
 845           if(item.mRenderer && item.mRenderer->NeedsProgram())
 846           {
 847             // Prepare and store used programs for further processing
 848             auto program = item.mRenderer->PrepareProgram(instruction);
 849             if(program)
 850             {
 851               auto memoryRequirements = program->GetUniformBlocksMemoryRequirements();
 852
 853               totalSizeCPU += memoryRequirements.totalCpuSizeRequired;
 854               totalSizeGPU += memoryRequirements.totalGpuSizeRequired;
 855             }
 856           }
 857         }
 858       }
 859     }
 860   }
 861
 862   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Render scene (%s), CPU:%d GPU:%d\n", renderToFbo ? "Offscreen" : "Onscreen", totalSizeCPU, totalSizeGPU);
 863
 864   auto& uboManager = mImpl->uniformBufferManager;
 865
 866   uboManager->SetCurrentSceneRenderInfo(sceneObject, renderToFbo);
 867   uboManager->Rollback(sceneObject, renderToFbo);
 868
 869   // Respec UBOs for this frame (orphan buffers or double buffer in the GPU)
 870   if(instructionCount)
 871   {
 872     uboManager->GetUniformBufferForScene(sceneObject, renderToFbo, true)->ReSpecify(totalSizeCPU);
 873     uboManager->GetUniformBufferForScene(sceneObject, renderToFbo, false)->ReSpecify(totalSizeGPU);
 874   }
 875
 876 #if defined(DEBUG_ENABLED)
 877   auto uniformBuffer1 = uboManager->GetUniformBufferForScene(sceneObject, renderToFbo, true);
 878   auto uniformBuffer2 = uboManager->GetUniformBufferForScene(sceneObject, renderToFbo, false);
 879   if(uniformBuffer1)
 880   {
 881     DALI_LOG_INFO(gLogFilter, Debug::Verbose, "CPU buffer: Offset(%d), Cap(%d)\n", uniformBuffer1->GetCurrentOffset(), uniformBuffer1->GetCurrentCapacity());
 882   }
 883   else
 884   {
 885     DALI_LOG_INFO(gLogFilter, Debug::Verbose, "CPU buffer: nil\n");
 886   }
 887   if(uniformBuffer2)
 888   {
 889     DALI_LOG_INFO(gLogFilter, Debug::Verbose, "GPU buffer: Offset(%d), Cap(%d)\n", uniformBuffer2->GetCurrentOffset(), uniformBuffer2->GetCurrentCapacity());
 890   }
 891   else
 892   {
 893     DALI_LOG_INFO(gLogFilter, Debug::Verbose, "GPU buffer: nil\n");
 894   }
 895 #endif
 896
 897   for(uint32_t i = 0; i < instructionCount; ++i)
 898   {
 899     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 900
 901     if((renderToFbo && !instruction.mFrameBuffer) || (!renderToFbo && instruction.mFrameBuffer))
 902     {
 903       continue; // skip
 904     }
 905
 906     // Mark that we will require a post-render step to be performed (includes swap-buffers).
 907     status.SetNeedsPostRender(true);
 908
 909     Rect<int32_t> viewportRect;
 910
 911     int32_t surfaceOrientation = sceneObject->GetSurfaceOrientation() + sceneObject->GetScreenOrientation();
 912     if(surfaceOrientation >= 360)
 913     {
 914       surfaceOrientation -= 360;
 915     }
 916
 917     // @todo Should these be part of scene?
 918     Integration::DepthBufferAvailable   depthBufferAvailable   = mImpl->depthBufferAvailable;
 919     Integration::StencilBufferAvailable stencilBufferAvailable = mImpl->stencilBufferAvailable;
 920
 921     Graphics::RenderTarget*           currentRenderTarget = nullptr;
 922     Graphics::RenderPass*             currentRenderPass   = nullptr;
 923     std::vector<Graphics::ClearValue> currentClearValues{};
 924
 925     if(instruction.mFrameBuffer)
 926     {
 927       // Ensure graphics framebuffer is created, bind attachments and create render passes
 928       // Only happens once per framebuffer. If the create fails, e.g. no attachments yet,
 929       // then don't render to this framebuffer.
 930       if(!instruction.mFrameBuffer->GetGraphicsObject())
 931       {
 932         const bool created = instruction.mFrameBuffer->CreateGraphicsObjects();
 933         if(!created)
 934         {
 935           continue;
 936         }
 937       }
 938
 939       auto& clearValues = instruction.mFrameBuffer->GetGraphicsRenderPassClearValues();
 940
 941       // Set the clear color for first color attachment
 942       if(instruction.mIsClearColorSet && !clearValues.empty())
 943       {
 944         clearValues[0].color = {
 945           instruction.mClearColor.r,
 946           instruction.mClearColor.g,
 947           instruction.mClearColor.b,
 948           instruction.mClearColor.a};
 949       }
 950
 951       currentClearValues = clearValues;
 952
 953       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 954
 955       // offscreen buffer
 956       currentRenderTarget = instruction.mFrameBuffer->GetGraphicsRenderTarget();
 957       currentRenderPass   = instruction.mFrameBuffer->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 958     }
 959     else // no framebuffer
 960     {
 961       // surface
 962       auto& clearValues = sceneObject->GetGraphicsRenderPassClearValues();
 963
 964       if(instruction.mIsClearColorSet)
 965       {
 966         clearValues[0].color = {
 967           instruction.mClearColor.r,
 968           instruction.mClearColor.g,
 969           instruction.mClearColor.b,
 970           instruction.mClearColor.a};
 971       }
 972
 973       currentClearValues = clearValues;
 974
 975       // @todo SceneObject should already have the depth clear / stencil clear in the clearValues array.
 976       // if the window has a depth/stencil buffer.
 977       if((depthBufferAvailable == Integration::DepthBufferAvailable::TRUE ||
 978           stencilBufferAvailable == Integration::StencilBufferAvailable::TRUE) &&
 979          (currentClearValues.size() <= 1))
 980       {
 981         currentClearValues.emplace_back();
 982         currentClearValues.back().depthStencil.depth   = 0;
 983         currentClearValues.back().depthStencil.stencil = 0;
 984       }
 985
 986       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 987
 988       currentRenderTarget = sceneObject->GetSurfaceRenderTarget();
 989       currentRenderPass   = sceneObject->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 990     }
 991
 992     targetstoPresent.emplace_back(currentRenderTarget);
 993
 994     // reset the program matrices for all programs once per frame
 995     // this ensures we will set view and projection matrix once per program per camera
 996     mImpl->programController.ResetProgramMatrices();
 997
 998     if(!instruction.mIgnoreRenderToFbo && (instruction.mFrameBuffer != nullptr))
 999     {
1000       // Offscreen buffer rendering
1001       if(instruction.mIsViewportSet)
1002       {
1003         // For Viewport the lower-left corner is (0,0)
1004         const int32_t y = (instruction.mFrameBuffer->GetHeight() - instruction.mViewport.height) - instruction.mViewport.y;
1005         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
1006       }
1007       else
1008       {
1009         viewportRect.Set(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
1010       }
1011       surfaceOrientation = 0;
1012     }
1013     else // No Offscreen frame buffer rendering
1014     {
1015       // Check whether a viewport is specified, otherwise the full surface size is used
1016       if(instruction.mIsViewportSet)
1017       {
1018         // For Viewport the lower-left corner is (0,0)
1019         const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
1020         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
1021       }
1022       else
1023       {
1024         viewportRect = surfaceRect;
1025       }
1026     }
1027
1028     // Set surface orientation
1029     // @todo Inform graphics impl by another route.
1030     // was: mImpl->currentContext->SetSurfaceOrientation(surfaceOrientation);
1031
1032     /*** Clear region of framebuffer or surface before drawing ***/
1033     bool clearFullFrameRect = (surfaceRect == viewportRect);
1034     if(instruction.mFrameBuffer != nullptr)
1035     {
1036       Viewport frameRect(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
1037       clearFullFrameRect = (frameRect == viewportRect);
1038     }
1039
1040     if(!clippingRect.IsEmpty())
1041     {
1042       if(!clippingRect.Intersect(viewportRect))
1043       {
1044         DALI_LOG_ERROR("Invalid clipping rect %d %d %d %d\n", clippingRect.x, clippingRect.y, clippingRect.width, clippingRect.height);
1045         clippingRect = Rect<int>();
1046       }
1047       clearFullFrameRect = false;
1048     }
1049
1050     Graphics::Rect2D scissorArea{viewportRect.x, viewportRect.y, uint32_t(viewportRect.width), uint32_t(viewportRect.height)};
1051     if(instruction.mIsClearColorSet)
1052     {
1053       if(!clearFullFrameRect)
1054       {
1055         if(!clippingRect.IsEmpty())
1056         {
1057           scissorArea = {clippingRect.x, clippingRect.y, uint32_t(clippingRect.width), uint32_t(clippingRect.height)};
1058         }
1059       }
1060     }
1061
1062     // Scissor's value should be set based on the default system coordinates.
1063     // When the surface is rotated, the input values already were set with the rotated angle.
1064     // So, re-calculation is needed.
1065     scissorArea = RecalculateScissorArea(scissorArea, surfaceOrientation, surfaceRect);
1066
1067     // Begin render pass
1068     mainCommandBuffer->BeginRenderPass(
1069       currentRenderPass,
1070       currentRenderTarget,
1071       scissorArea,
1072       currentClearValues);
1073
1074     mainCommandBuffer->SetViewport({float(viewportRect.x),
1075                                     float(viewportRect.y),
1076                                     float(viewportRect.width),
1077                                     float(viewportRect.height)});
1078
1079     mImpl->renderAlgorithms.ProcessRenderInstruction(
1080       instruction,
1081       mImpl->renderBufferIndex,
1082       depthBufferAvailable,
1083       stencilBufferAvailable,
1084       viewportRect,
1085       clippingRect,
1086       surfaceOrientation,
1087       Uint16Pair(surfaceRect.width, surfaceRect.height));
1088
1089     Graphics::SyncObject* syncObject{nullptr};
1090     // If the render instruction has an associated render tracker (owned separately)
1091     // and framebuffer, create a one shot sync object, and use it to determine when
1092     // the render pass has finished executing on GPU.
1093     if(instruction.mRenderTracker && instruction.mFrameBuffer)
1094     {
1095       syncObject                 = instruction.mRenderTracker->CreateSyncObject(mImpl->graphicsController);
1096       instruction.mRenderTracker = nullptr;
1097     }
1098     mainCommandBuffer->EndRenderPass(syncObject);
1099   }
1100
1101   // Flush UBOs
1102   mImpl->uniformBufferManager->Flush(sceneObject, renderToFbo);
1103
1104   mImpl->renderAlgorithms.SubmitCommandBuffer();
1105   mImpl->commandBufferSubmitted = true;
1106
1107   std::sort(targetstoPresent.begin(), targetstoPresent.end());
1108
1109   Graphics::RenderTarget* rt = nullptr;
1110   for(auto& target : targetstoPresent)
1111   {
1112     if(target != rt)
1113     {
1114       mImpl->graphicsController.PresentRenderTarget(target);
1115       rt = target;
1116     }
1117   }
1118 }
1119
1120 void RenderManager::PostRender()
1121 {
1122   if(!mImpl->commandBufferSubmitted)
1123   {
1124     // Rendering is skipped but there may be pending tasks. Flush them.
1125     Graphics::SubmitInfo submitInfo;
1126     submitInfo.cmdBuffer.clear(); // Only flush
1127     submitInfo.flags = 0 | Graphics::SubmitFlagBits::FLUSH;
1128     mImpl->graphicsController.SubmitCommandBuffers(submitInfo);
1129
1130     mImpl->commandBufferSubmitted = true;
1131   }
1132
1133   // Notify RenderGeometries that rendering has finished
1134   for(auto&& iter : mImpl->geometryContainer)
1135   {
1136     iter->OnRenderFinished();
1137   }
1138
1139   // Notify updated RenderTexture that rendering has finished
1140   for(auto&& iter : mImpl->updatedTextures)
1141   {
1142     iter->OnRenderFinished();
1143   }
1144   mImpl->updatedTextures.Clear();
1145
1146   // Remove discarded textures after OnRenderFinished called
1147   mImpl->textureDiscardQueue.Clear();
1148
1149   mImpl->UpdateTrackers();
1150
1151   uint32_t count = 0u;
1152   for(auto& scene : mImpl->sceneContainer)
1153   {
1154     count += scene->GetRenderInstructions().Count(mImpl->renderBufferIndex);
1155   }
1156
1157   // Remove unused shader and programs during CACHE_CLEAN_FRAME_COUNT frames.
1158   if(mImpl->frameCount % CACHE_CLEAN_FRAME_COUNT == 0)
1159   {
1160     mImpl->programController.ClearUnusedCache();
1161     mImpl->shaderCache.ClearUnusedCache();
1162   }
1163
1164   const bool haveInstructions = count > 0u;
1165
1166   // If this frame was rendered due to instructions existing, we mark this so we know to clear the next frame.
1167   mImpl->lastFrameWasRendered = haveInstructions;
1168
1169   /**
1170    * The rendering has finished; swap to the next buffer.
1171    * Ideally the update has just finished using this buffer; otherwise the render thread
1172    * should block until the update has finished.
1173    */
1174   mImpl->renderBufferIndex = (0 != mImpl->renderBufferIndex) ? 0 : 1;
1175
1176   DALI_PRINT_RENDER_END();
1177 }
1178
1179 } // namespace SceneGraph
1180
1181 } // namespace Internal
1182
1183 } // namespace Dali