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

   1 /*
   2  * Copyright (c) 2021 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
  28 #include <dali/internal/event/common/scene-impl.h>
  29
  30 #include <dali/internal/update/common/scene-graph-scene.h>
  31 #include <dali/internal/update/render-tasks/scene-graph-camera.h>
  32
  33 #include <dali/internal/render/common/render-algorithms.h>
  34 #include <dali/internal/render/common/render-debug.h>
  35 #include <dali/internal/render/common/render-instruction.h>
  36 #include <dali/internal/render/common/render-tracker.h>
  37 #include <dali/internal/render/queue/render-queue.h>
  38 #include <dali/internal/render/renderers/render-frame-buffer.h>
  39 #include <dali/internal/render/renderers/render-texture.h>
  40 #include <dali/internal/render/renderers/shader-cache.h>
  41 #include <dali/internal/render/renderers/uniform-buffer-manager.h>
  42 #include <dali/internal/render/renderers/uniform-buffer-view-pool.h>
  43 #include <dali/internal/render/shaders/program-controller.h>
  44 #include <dali/internal/render/renderers/pipeline-cache.h>
  45
  46 #include <memory>
  47
  48 namespace Dali
  49 {
  50 namespace Internal
  51 {
  52 namespace SceneGraph
  53 {
  54 #if defined(DEBUG_ENABLED)
  55 namespace
  56 {
  57 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_RENDER_MANAGER");
  58 } // unnamed namespace
  59 #endif
  60
  61 namespace
  62 {
  63 inline Graphics::Rect2D RecalculateScissorArea(Graphics::Rect2D scissorArea, int orientation, Rect<int32_t> viewportRect)
  64 {
  65   Graphics::Rect2D newScissorArea;
  66
  67   if(orientation == 90)
  68   {
  69     newScissorArea.x      = viewportRect.height - (scissorArea.y + scissorArea.height);
  70     newScissorArea.y      = scissorArea.x;
  71     newScissorArea.width  = scissorArea.height;
  72     newScissorArea.height = scissorArea.width;
  73   }
  74   else if(orientation == 180)
  75   {
  76     newScissorArea.x      = viewportRect.width - (scissorArea.x + scissorArea.width);
  77     newScissorArea.y      = viewportRect.height - (scissorArea.y + scissorArea.height);
  78     newScissorArea.width  = scissorArea.width;
  79     newScissorArea.height = scissorArea.height;
  80   }
  81   else if(orientation == 270)
  82   {
  83     newScissorArea.x      = scissorArea.y;
  84     newScissorArea.y      = viewportRect.width - (scissorArea.x + scissorArea.width);
  85     newScissorArea.width  = scissorArea.height;
  86     newScissorArea.height = scissorArea.width;
  87   }
  88   else
  89   {
  90     newScissorArea.x      = scissorArea.x;
  91     newScissorArea.y      = scissorArea.y;
  92     newScissorArea.width  = scissorArea.width;
  93     newScissorArea.height = scissorArea.height;
  94   }
  95   return newScissorArea;
  96 }
  97 } // namespace
  98 /**
  99  * Structure to contain internal data
 100  */
 101 struct RenderManager::Impl
 102 {
 103   Impl(Graphics::Controller&               graphicsController,
 104        Integration::DepthBufferAvailable   depthBufferAvailableParam,
 105        Integration::StencilBufferAvailable stencilBufferAvailableParam,
 106        Integration::PartialUpdateAvailable partialUpdateAvailableParam)
 107   : graphicsController(graphicsController),
 108     renderQueue(),
 109     renderAlgorithms(graphicsController),
 110     frameCount(0u),
 111     renderBufferIndex(SceneGraphBuffers::INITIAL_UPDATE_BUFFER_INDEX),
 112     rendererContainer(),
 113     samplerContainer(),
 114     textureContainer(),
 115     frameBufferContainer(),
 116     lastFrameWasRendered(false),
 117     programController(graphicsController),
 118     shaderCache(graphicsController),
 119     depthBufferAvailable(depthBufferAvailableParam),
 120     stencilBufferAvailable(stencilBufferAvailableParam),
 121     partialUpdateAvailable(partialUpdateAvailableParam)
 122   {
 123     // Create thread pool with just one thread ( there may be a need to create more threads in the future ).
 124     threadPool = std::make_unique<Dali::ThreadPool>();
 125     threadPool->Initialize(1u);
 126
 127     uniformBufferManager = std::make_unique<Render::UniformBufferManager>(&graphicsController);
 128     pipelineCache = std::make_unique<Render::PipelineCache>(graphicsController);
 129   }
 130
 131   ~Impl()
 132   {
 133     threadPool.reset(nullptr); // reset now to maintain correct destruction order
 134   }
 135
 136   void AddRenderTracker(Render::RenderTracker* renderTracker)
 137   {
 138     DALI_ASSERT_DEBUG(renderTracker != nullptr);
 139     mRenderTrackers.PushBack(renderTracker);
 140   }
 141
 142   void RemoveRenderTracker(Render::RenderTracker* renderTracker)
 143   {
 144     mRenderTrackers.EraseObject(renderTracker);
 145   }
 146
 147   void UpdateTrackers()
 148   {
 149     for(auto&& iter : mRenderTrackers)
 150     {
 151       iter->PollSyncObject();
 152     }
 153   }
 154
 155   // the order is important for destruction,
 156   Graphics::Controller& graphicsController;
 157   RenderQueue           renderQueue; ///< A message queue for receiving messages from the update-thread.
 158
 159   std::vector<SceneGraph::Scene*> sceneContainer; ///< List of pointers to the scene graph objects of the scenes
 160
 161   Render::RenderAlgorithms renderAlgorithms; ///< The RenderAlgorithms object is used to action the renders required by a RenderInstruction
 162
 163   uint32_t    frameCount;        ///< The current frame count
 164   BufferIndex renderBufferIndex; ///< The index of the buffer to read from; this is opposite of the "update" buffer
 165
 166   OwnerContainer<Render::Renderer*>     rendererContainer;     ///< List of owned renderers
 167   OwnerContainer<Render::Sampler*>      samplerContainer;      ///< List of owned samplers
 168   OwnerContainer<Render::Texture*>      textureContainer;      ///< List of owned textures
 169   OwnerContainer<Render::FrameBuffer*>  frameBufferContainer;  ///< List of owned framebuffers
 170   OwnerContainer<Render::VertexBuffer*> vertexBufferContainer; ///< List of owned vertex buffers
 171   OwnerContainer<Render::Geometry*>     geometryContainer;     ///< List of owned Geometries
 172
 173   bool lastFrameWasRendered; ///< Keeps track of the last frame being rendered due to having render instructions
 174
 175   OwnerContainer<Render::RenderTracker*> mRenderTrackers; ///< List of render trackers
 176
 177   ProgramController   programController; ///< Owner of the programs
 178   Render::ShaderCache shaderCache;       ///< The cache for the graphics shaders
 179
 180   std::unique_ptr<Render::UniformBufferManager> uniformBufferManager; ///< The uniform buffer manager
 181   std::unique_ptr<Render::PipelineCache> pipelineCache;
 182
 183   Integration::DepthBufferAvailable   depthBufferAvailable;   ///< Whether the depth buffer is available
 184   Integration::StencilBufferAvailable stencilBufferAvailable; ///< Whether the stencil buffer is available
 185   Integration::PartialUpdateAvailable partialUpdateAvailable; ///< Whether the partial update is available
 186
 187   std::unique_ptr<Dali::ThreadPool> threadPool;            ///< The thread pool
 188   Vector<Graphics::Texture*>        boundTextures;         ///< The textures bound for rendering
 189   Vector<Graphics::Texture*>        textureDependencyList; ///< The dependency list of bound textures
 190 };
 191
 192 RenderManager* RenderManager::New(Graphics::Controller&               graphicsController,
 193                                   Integration::DepthBufferAvailable   depthBufferAvailable,
 194                                   Integration::StencilBufferAvailable stencilBufferAvailable,
 195                                   Integration::PartialUpdateAvailable partialUpdateAvailable)
 196 {
 197   auto* manager  = new RenderManager;
 198   manager->mImpl = new Impl(graphicsController,
 199                             depthBufferAvailable,
 200                             stencilBufferAvailable,
 201                             partialUpdateAvailable);
 202   return manager;
 203 }
 204
 205 RenderManager::RenderManager()
 206 : mImpl(nullptr)
 207 {
 208 }
 209
 210 RenderManager::~RenderManager()
 211 {
 212   delete mImpl;
 213 }
 214
 215 RenderQueue& RenderManager::GetRenderQueue()
 216 {
 217   return mImpl->renderQueue;
 218 }
 219
 220 void RenderManager::SetShaderSaver(ShaderSaver& upstream)
 221 {
 222 }
 223
 224 void RenderManager::AddRenderer(OwnerPointer<Render::Renderer>& renderer)
 225 {
 226   // Initialize the renderer as we are now in render thread
 227   renderer->Initialize(mImpl->graphicsController, mImpl->programController, mImpl->shaderCache, *(mImpl->uniformBufferManager.get()),
 228                        *(mImpl->pipelineCache.get()));
 229
 230   mImpl->rendererContainer.PushBack(renderer.Release());
 231 }
 232
 233 void RenderManager::RemoveRenderer(Render::Renderer* renderer)
 234 {
 235   mImpl->rendererContainer.EraseObject(renderer);
 236 }
 237
 238 void RenderManager::AddSampler(OwnerPointer<Render::Sampler>& sampler)
 239 {
 240   sampler->Initialize(mImpl->graphicsController);
 241   mImpl->samplerContainer.PushBack(sampler.Release());
 242 }
 243
 244 void RenderManager::RemoveSampler(Render::Sampler* sampler)
 245 {
 246   mImpl->samplerContainer.EraseObject(sampler);
 247 }
 248
 249 void RenderManager::AddTexture(OwnerPointer<Render::Texture>& texture)
 250 {
 251   texture->Initialize(mImpl->graphicsController);
 252   mImpl->textureContainer.PushBack(texture.Release());
 253 }
 254
 255 void RenderManager::RemoveTexture(Render::Texture* texture)
 256 {
 257   DALI_ASSERT_DEBUG(NULL != texture);
 258
 259   // Find the texture, use reference to pointer so we can do the erase safely
 260   for(auto&& iter : mImpl->textureContainer)
 261   {
 262     if(iter == texture)
 263     {
 264       texture->Destroy();
 265       mImpl->textureContainer.Erase(&iter); // Texture found; now destroy it
 266       return;
 267     }
 268   }
 269 }
 270
 271 void RenderManager::UploadTexture(Render::Texture* texture, PixelDataPtr pixelData, const Texture::UploadParams& params)
 272 {
 273   texture->Upload(pixelData, params);
 274 }
 275
 276 void RenderManager::GenerateMipmaps(Render::Texture* texture)
 277 {
 278   texture->GenerateMipmaps();
 279 }
 280
 281 void RenderManager::SetFilterMode(Render::Sampler* sampler, uint32_t minFilterMode, uint32_t magFilterMode)
 282 {
 283   sampler->SetFilterMode(static_cast<Dali::FilterMode::Type>(minFilterMode),
 284                          static_cast<Dali::FilterMode::Type>(magFilterMode));
 285 }
 286
 287 void RenderManager::SetWrapMode(Render::Sampler* sampler, uint32_t rWrapMode, uint32_t sWrapMode, uint32_t tWrapMode)
 288 {
 289   sampler->SetWrapMode(static_cast<Dali::WrapMode::Type>(rWrapMode),
 290                        static_cast<Dali::WrapMode::Type>(sWrapMode),
 291                        static_cast<Dali::WrapMode::Type>(tWrapMode));
 292 }
 293
 294 void RenderManager::AddFrameBuffer(OwnerPointer<Render::FrameBuffer>& frameBuffer)
 295 {
 296   Render::FrameBuffer* frameBufferPtr = frameBuffer.Release();
 297   mImpl->frameBufferContainer.PushBack(frameBufferPtr);
 298   frameBufferPtr->Initialize(mImpl->graphicsController);
 299 }
 300
 301 void RenderManager::RemoveFrameBuffer(Render::FrameBuffer* frameBuffer)
 302 {
 303   DALI_ASSERT_DEBUG(nullptr != frameBuffer);
 304
 305   // Find the sampler, use reference so we can safely do the erase
 306   for(auto&& iter : mImpl->frameBufferContainer)
 307   {
 308     if(iter == frameBuffer)
 309     {
 310       frameBuffer->Destroy();
 311       mImpl->frameBufferContainer.Erase(&iter); // frameBuffer found; now destroy it
 312
 313       break;
 314     }
 315   }
 316 }
 317
 318 void RenderManager::InitializeScene(SceneGraph::Scene* scene)
 319 {
 320   scene->Initialize(mImpl->graphicsController, mImpl->depthBufferAvailable, mImpl->stencilBufferAvailable);
 321   mImpl->sceneContainer.push_back(scene);
 322 }
 323
 324 void RenderManager::UninitializeScene(SceneGraph::Scene* scene)
 325 {
 326   auto iter = std::find(mImpl->sceneContainer.begin(), mImpl->sceneContainer.end(), scene);
 327   if(iter != mImpl->sceneContainer.end())
 328   {
 329     mImpl->sceneContainer.erase(iter);
 330   }
 331 }
 332
 333 void RenderManager::SurfaceReplaced(SceneGraph::Scene* scene)
 334 {
 335   scene->Initialize(mImpl->graphicsController, mImpl->depthBufferAvailable, mImpl->stencilBufferAvailable);
 336 }
 337
 338 void RenderManager::AttachColorTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel, uint32_t layer)
 339 {
 340   frameBuffer->AttachColorTexture(texture, mipmapLevel, layer);
 341 }
 342
 343 void RenderManager::AttachDepthTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 344 {
 345   frameBuffer->AttachDepthTexture(texture, mipmapLevel);
 346 }
 347
 348 void RenderManager::AttachDepthStencilTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 349 {
 350   frameBuffer->AttachDepthStencilTexture(texture, mipmapLevel);
 351 }
 352
 353 void RenderManager::AddVertexBuffer(OwnerPointer<Render::VertexBuffer>& vertexBuffer)
 354 {
 355   mImpl->vertexBufferContainer.PushBack(vertexBuffer.Release());
 356 }
 357
 358 void RenderManager::RemoveVertexBuffer(Render::VertexBuffer* vertexBuffer)
 359 {
 360   mImpl->vertexBufferContainer.EraseObject(vertexBuffer);
 361 }
 362
 363 void RenderManager::SetVertexBufferFormat(Render::VertexBuffer* vertexBuffer, OwnerPointer<Render::VertexBuffer::Format>& format)
 364 {
 365   vertexBuffer->SetFormat(format.Release());
 366 }
 367
 368 void RenderManager::SetVertexBufferData(Render::VertexBuffer* vertexBuffer, OwnerPointer<Vector<uint8_t>>& data, uint32_t size)
 369 {
 370   vertexBuffer->SetData(data.Release(), size);
 371 }
 372
 373 void RenderManager::SetIndexBuffer(Render::Geometry* geometry, Dali::Vector<uint16_t>& indices)
 374 {
 375   geometry->SetIndexBuffer(indices);
 376 }
 377
 378 void RenderManager::AddGeometry(OwnerPointer<Render::Geometry>& geometry)
 379 {
 380   mImpl->geometryContainer.PushBack(geometry.Release());
 381 }
 382
 383 void RenderManager::RemoveGeometry(Render::Geometry* geometry)
 384 {
 385   auto it = std::find_if( mImpl->geometryContainer.begin(), mImpl->geometryContainer.end(),[geometry]( auto& item )
 386   {
 387     return geometry == item;
 388   });
 389
 390   if(it != mImpl->geometryContainer.end())
 391   {
 392     mImpl->geometryContainer.Erase(it);
 393   }
 394 }
 395
 396 void RenderManager::AttachVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 397 {
 398   DALI_ASSERT_DEBUG(nullptr != geometry);
 399
 400   // Find the geometry
 401   for(auto&& iter : mImpl->geometryContainer)
 402   {
 403     if(iter == geometry)
 404     {
 405       iter->AddVertexBuffer(vertexBuffer);
 406       break;
 407     }
 408   }
 409 }
 410
 411 void RenderManager::RemoveVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 412 {
 413   DALI_ASSERT_DEBUG(nullptr != geometry);
 414
 415   // Find the geometry
 416   for(auto&& iter : mImpl->geometryContainer)
 417   {
 418     if(iter == geometry)
 419     {
 420       iter->RemoveVertexBuffer(vertexBuffer);
 421       break;
 422     }
 423   }
 424 }
 425
 426 void RenderManager::SetGeometryType(Render::Geometry* geometry, uint32_t geometryType)
 427 {
 428   geometry->SetType(Render::Geometry::Type(geometryType));
 429 }
 430
 431 void RenderManager::AddRenderTracker(Render::RenderTracker* renderTracker)
 432 {
 433   mImpl->AddRenderTracker(renderTracker);
 434 }
 435
 436 void RenderManager::RemoveRenderTracker(Render::RenderTracker* renderTracker)
 437 {
 438   mImpl->RemoveRenderTracker(renderTracker);
 439 }
 440
 441 void RenderManager::PreRender(Integration::RenderStatus& status, bool forceClear, bool uploadOnly)
 442 {
 443   DALI_PRINT_RENDER_START(mImpl->renderBufferIndex);
 444
 445   // Rollback
 446   mImpl->uniformBufferManager->GetUniformBufferViewPool(mImpl->renderBufferIndex)->Rollback();
 447
 448   // Increment the frame count at the beginning of each frame
 449   ++mImpl->frameCount;
 450
 451   // Process messages queued during previous update
 452   mImpl->renderQueue.ProcessMessages(mImpl->renderBufferIndex);
 453
 454   uint32_t count = 0u;
 455   for(auto& i : mImpl->sceneContainer)
 456   {
 457     count += i->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 458   }
 459
 460   const bool haveInstructions = count > 0u;
 461
 462   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");
 463
 464   // Only render if we have instructions to render, or the last frame was rendered (and therefore a clear is required).
 465   if(haveInstructions || mImpl->lastFrameWasRendered || forceClear)
 466   {
 467     DALI_LOG_INFO(gLogFilter, Debug::General, "Render: Processing\n");
 468
 469     // Upload the geometries
 470     for(auto&& geom : mImpl->geometryContainer)
 471     {
 472       geom->Upload( mImpl->graphicsController );
 473     }
 474   }
 475 }
 476
 477 void RenderManager::PreRender(Integration::Scene& scene, std::vector<Rect<int>>& damagedRects)
 478 {
 479   if(mImpl->partialUpdateAvailable != Integration::PartialUpdateAvailable::TRUE)
 480   {
 481     return;
 482   }
 483
 484   Internal::Scene&   sceneInternal = GetImplementation(scene);
 485   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 486
 487   if(sceneObject->IsRenderingSkipped())
 488   {
 489     // We don't need to calculate dirty rects
 490     return;
 491   }
 492
 493   class DamagedRectsCleaner
 494   {
 495   public:
 496     explicit DamagedRectsCleaner(std::vector<Rect<int>>& damagedRects)
 497     : mDamagedRects(damagedRects),
 498       mCleanOnReturn(true)
 499     {
 500     }
 501
 502     void SetCleanOnReturn(bool cleanOnReturn)
 503     {
 504       mCleanOnReturn = cleanOnReturn;
 505     }
 506
 507     ~DamagedRectsCleaner()
 508     {
 509       if(mCleanOnReturn)
 510       {
 511         mDamagedRects.clear();
 512       }
 513     }
 514
 515   private:
 516     std::vector<Rect<int>>& mDamagedRects;
 517     bool                    mCleanOnReturn;
 518   };
 519
 520   Rect<int32_t> surfaceRect = sceneObject->GetSurfaceRect();
 521
 522   // Clean collected dirty/damaged rects on exit if 3d layer or 3d node or other conditions.
 523   DamagedRectsCleaner damagedRectCleaner(damagedRects);
 524
 525   // Mark previous dirty rects in the sorted array. The array is already sorted by node and renderer, frame number.
 526   // so you don't need to sort: std::stable_sort(itemsDirtyRects.begin(), itemsDirtyRects.end());
 527   std::vector<DirtyRect>& itemsDirtyRects = sceneInternal.GetItemsDirtyRects();
 528   for(DirtyRect& dirtyRect : itemsDirtyRects)
 529   {
 530     dirtyRect.visited = false;
 531   }
 532
 533   uint32_t instructionCount = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 534   for(uint32_t i = 0; i < instructionCount; ++i)
 535   {
 536     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 537
 538     if(instruction.mFrameBuffer)
 539     {
 540       return; // TODO: reset, we don't deal with render tasks with framebuffers (for now)
 541     }
 542
 543     const Camera* camera = instruction.GetCamera();
 544     if(camera->mType == Camera::DEFAULT_TYPE && camera->mTargetPosition == Camera::DEFAULT_TARGET_POSITION)
 545     {
 546       const Node* node = instruction.GetCamera()->GetNode();
 547       if(node)
 548       {
 549         Vector3    position;
 550         Vector3    scale;
 551         Quaternion orientation;
 552         node->GetWorldMatrix(mImpl->renderBufferIndex).GetTransformComponents(position, orientation, scale);
 553
 554         Vector3 orientationAxis;
 555         Radian  orientationAngle;
 556         orientation.ToAxisAngle(orientationAxis, orientationAngle);
 557
 558         if(position.x > Math::MACHINE_EPSILON_10000 ||
 559            position.y > Math::MACHINE_EPSILON_10000 ||
 560            orientationAxis != Vector3(0.0f, 1.0f, 0.0f) ||
 561            orientationAngle != ANGLE_180 ||
 562            scale != Vector3(1.0f, 1.0f, 1.0f))
 563         {
 564           return;
 565         }
 566       }
 567     }
 568     else
 569     {
 570       return;
 571     }
 572
 573     Rect<int32_t> viewportRect;
 574     if(instruction.mIsViewportSet)
 575     {
 576       const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 577       viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 578       if(viewportRect.IsEmpty() || !viewportRect.IsValid())
 579       {
 580         return; // just skip funny use cases for now, empty viewport means it is set somewhere else
 581       }
 582     }
 583     else
 584     {
 585       viewportRect = surfaceRect;
 586     }
 587
 588     const Matrix* viewMatrix       = instruction.GetViewMatrix(mImpl->renderBufferIndex);
 589     const Matrix* projectionMatrix = instruction.GetProjectionMatrix(mImpl->renderBufferIndex);
 590     if(viewMatrix && projectionMatrix)
 591     {
 592       const RenderListContainer::SizeType count = instruction.RenderListCount();
 593       for(RenderListContainer::SizeType index = 0u; index < count; ++index)
 594       {
 595         const RenderList* renderList = instruction.GetRenderList(index);
 596         if(renderList && !renderList->IsEmpty())
 597         {
 598           const std::size_t listCount = renderList->Count();
 599           for(uint32_t listIndex = 0u; listIndex < listCount; ++listIndex)
 600           {
 601             RenderItem& item = renderList->GetItem(listIndex);
 602             // If the item does 3D transformation, do early exit and clean the damaged rect array
 603             if(item.mUpdateSize == Vector3::ZERO)
 604             {
 605               return;
 606             }
 607
 608             Rect<int> rect;
 609             DirtyRect dirtyRect(item.mNode, item.mRenderer, mImpl->frameCount, rect);
 610             // If the item refers to updated node or renderer.
 611             if(item.mIsUpdated ||
 612                (item.mNode &&
 613                 (item.mNode->Updated() || (item.mRenderer && item.mRenderer->Updated(mImpl->renderBufferIndex, item.mNode)))))
 614             {
 615               item.mIsUpdated = false;
 616               item.mNode->SetUpdated(false);
 617
 618               rect = item.CalculateViewportSpaceAABB(item.mUpdateSize, viewportRect.width, viewportRect.height);
 619               if(rect.IsValid() && rect.Intersect(viewportRect) && !rect.IsEmpty())
 620               {
 621                 const int left   = rect.x;
 622                 const int top    = rect.y;
 623                 const int right  = rect.x + rect.width;
 624                 const int bottom = rect.y + rect.height;
 625                 rect.x           = (left / 16) * 16;
 626                 rect.y           = (top / 16) * 16;
 627                 rect.width       = ((right + 16) / 16) * 16 - rect.x;
 628                 rect.height      = ((bottom + 16) / 16) * 16 - rect.y;
 629
 630                 // Found valid dirty rect.
 631                 // 1. Insert it in the sorted array of the dirty rects.
 632                 // 2. Mark the related dirty rects as visited so they will not be removed below.
 633                 // 3. Keep only last 3 dirty rects for the same node and renderer (Tizen uses 3 back buffers, Ubuntu 1).
 634                 dirtyRect.rect    = rect;
 635                 auto dirtyRectPos = std::lower_bound(itemsDirtyRects.begin(), itemsDirtyRects.end(), dirtyRect);
 636                 dirtyRectPos      = itemsDirtyRects.insert(dirtyRectPos, dirtyRect);
 637
 638                 int c = 1;
 639                 while(++dirtyRectPos != itemsDirtyRects.end())
 640                 {
 641                   if(dirtyRectPos->node != item.mNode || dirtyRectPos->renderer != item.mRenderer)
 642                   {
 643                     break;
 644                   }
 645
 646                   dirtyRectPos->visited = true;
 647                   Rect<int>& dirtRect   = dirtyRectPos->rect;
 648                   rect.Merge(dirtRect);
 649
 650                   c++;
 651                   if(c > 3) // no more then 3 previous rects
 652                   {
 653                     itemsDirtyRects.erase(dirtyRectPos);
 654                     break;
 655                   }
 656                 }
 657
 658                 damagedRects.push_back(rect);
 659               }
 660             }
 661             else
 662             {
 663               // 1. The item is not dirty, the node and renderer referenced by the item are still exist.
 664               // 2. Mark the related dirty rects as visited so they will not be removed below.
 665               auto dirtyRectPos = std::lower_bound(itemsDirtyRects.begin(), itemsDirtyRects.end(), dirtyRect);
 666               while(dirtyRectPos != itemsDirtyRects.end())
 667               {
 668                 if(dirtyRectPos->node != item.mNode || dirtyRectPos->renderer != item.mRenderer)
 669                 {
 670                   break;
 671                 }
 672
 673                 dirtyRectPos->visited = true;
 674                 dirtyRectPos++;
 675               }
 676             }
 677           }
 678         }
 679       }
 680     }
 681   }
 682
 683   // Check removed nodes or removed renderers dirty rects
 684   auto i = itemsDirtyRects.begin();
 685   auto j = itemsDirtyRects.begin();
 686   while(i != itemsDirtyRects.end())
 687   {
 688     if(i->visited)
 689     {
 690       *j++ = *i;
 691     }
 692     else
 693     {
 694       Rect<int>& dirtRect = i->rect;
 695       damagedRects.push_back(dirtRect);
 696     }
 697     i++;
 698   }
 699
 700   itemsDirtyRects.resize(j - itemsDirtyRects.begin());
 701   damagedRectCleaner.SetCleanOnReturn(false);
 702 }
 703
 704 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo)
 705 {
 706   Rect<int> clippingRect;
 707   RenderScene(status, scene, renderToFbo, clippingRect);
 708 }
 709
 710 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo, Rect<int>& clippingRect)
 711 {
 712   // Reset main algorithms command buffer
 713   mImpl->renderAlgorithms.ResetCommandBuffer();
 714
 715   auto mainCommandBuffer = mImpl->renderAlgorithms.GetMainCommandBuffer();
 716
 717   Internal::Scene&   sceneInternal = GetImplementation(scene);
 718   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 719
 720   uint32_t count = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 721
 722   std::vector<Graphics::RenderTarget*> targetstoPresent;
 723
 724   for(uint32_t i = 0; i < count; ++i)
 725   {
 726     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 727
 728     if((renderToFbo && !instruction.mFrameBuffer) || (!renderToFbo && instruction.mFrameBuffer))
 729     {
 730       continue; // skip
 731     }
 732
 733     // Mark that we will require a post-render step to be performed (includes swap-buffers).
 734     status.SetNeedsPostRender(true);
 735
 736     Rect<int32_t> viewportRect;
 737
 738     Rect<int32_t> surfaceRect        = sceneObject->GetSurfaceRect();
 739     int32_t       surfaceOrientation = sceneObject->GetSurfaceOrientation();
 740
 741     // @todo Should these be part of scene?
 742     Integration::DepthBufferAvailable   depthBufferAvailable   = mImpl->depthBufferAvailable;
 743     Integration::StencilBufferAvailable stencilBufferAvailable = mImpl->stencilBufferAvailable;
 744
 745     Graphics::RenderTarget*           currentRenderTarget = nullptr;
 746     Graphics::RenderPass*             currentRenderPass   = nullptr;
 747     std::vector<Graphics::ClearValue> currentClearValues{};
 748
 749     if(instruction.mFrameBuffer)
 750     {
 751       // Ensure graphics framebuffer is created, bind attachments and create render passes
 752       // Only happens once per framebuffer. If the create fails, e.g. no attachments yet,
 753       // then don't render to this framebuffer.
 754       if(!instruction.mFrameBuffer->GetGraphicsObject())
 755       {
 756         const bool created = instruction.mFrameBuffer->CreateGraphicsObjects();
 757         if(!created)
 758         {
 759           continue;
 760         }
 761       }
 762
 763       auto& clearValues = instruction.mFrameBuffer->GetGraphicsRenderPassClearValues();
 764
 765       // Set the clear color for first color attachment
 766       if(instruction.mIsClearColorSet && !clearValues.empty())
 767       {
 768         clearValues[0].color = {
 769           instruction.mClearColor.r,
 770           instruction.mClearColor.g,
 771           instruction.mClearColor.b,
 772           instruction.mClearColor.a};
 773       }
 774
 775       currentClearValues = clearValues;
 776
 777       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 778
 779       // offscreen buffer
 780       currentRenderTarget = instruction.mFrameBuffer->GetGraphicsRenderTarget();
 781       currentRenderPass   = instruction.mFrameBuffer->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 782     }
 783     else // no framebuffer
 784     {
 785       // surface
 786       auto& clearValues = sceneObject->GetGraphicsRenderPassClearValues();
 787
 788       if(instruction.mIsClearColorSet)
 789       {
 790         clearValues[0].color = {
 791           instruction.mClearColor.r,
 792           instruction.mClearColor.g,
 793           instruction.mClearColor.b,
 794           instruction.mClearColor.a};
 795       }
 796
 797       currentClearValues = clearValues;
 798
 799       // @todo SceneObject should already have the depth clear / stencil clear in the clearValues array.
 800       // if the window has a depth/stencil buffer.
 801       if((depthBufferAvailable == Integration::DepthBufferAvailable::TRUE ||
 802           stencilBufferAvailable == Integration::StencilBufferAvailable::TRUE) &&
 803          (currentClearValues.size() <= 1))
 804       {
 805         currentClearValues.emplace_back();
 806         currentClearValues.back().depthStencil.depth   = 0;
 807         currentClearValues.back().depthStencil.stencil = 0;
 808       }
 809
 810       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 811
 812       currentRenderTarget = sceneObject->GetSurfaceRenderTarget();
 813       currentRenderPass   = sceneObject->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 814     }
 815
 816     targetstoPresent.emplace_back(currentRenderTarget);
 817
 818     // reset the program matrices for all programs once per frame
 819     // this ensures we will set view and projection matrix once per program per camera
 820     mImpl->programController.ResetProgramMatrices();
 821
 822     if(instruction.mFrameBuffer)
 823     {
 824       // For each offscreen buffer, update the dependency list with the new texture id used by this frame buffer.
 825       for(unsigned int i0 = 0, i1 = instruction.mFrameBuffer->GetColorAttachmentCount(); i0 < i1; ++i0)
 826       {
 827         mImpl->textureDependencyList.PushBack(instruction.mFrameBuffer->GetTexture(i0));
 828       }
 829     }
 830
 831     if(!instruction.mIgnoreRenderToFbo && (instruction.mFrameBuffer != nullptr))
 832     {
 833       // Offscreen buffer rendering
 834       if(instruction.mIsViewportSet)
 835       {
 836         // For Viewport the lower-left corner is (0,0)
 837         const int32_t y = (instruction.mFrameBuffer->GetHeight() - instruction.mViewport.height) - instruction.mViewport.y;
 838         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 839       }
 840       else
 841       {
 842         viewportRect.Set(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
 843       }
 844       surfaceOrientation = 0;
 845     }
 846     else // No Offscreen frame buffer rendering
 847     {
 848       // Check whether a viewport is specified, otherwise the full surface size is used
 849       if(instruction.mIsViewportSet)
 850       {
 851         // For Viewport the lower-left corner is (0,0)
 852         const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 853         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 854       }
 855       else
 856       {
 857         viewportRect = surfaceRect;
 858       }
 859     }
 860
 861     // Set surface orientation
 862     // @todo Inform graphics impl by another route.
 863     // was: mImpl->currentContext->SetSurfaceOrientation(surfaceOrientation);
 864
 865     /*** Clear region of framebuffer or surface before drawing ***/
 866     bool clearFullFrameRect = (surfaceRect == viewportRect);
 867     if(instruction.mFrameBuffer != nullptr)
 868     {
 869       Viewport frameRect(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
 870       clearFullFrameRect = (frameRect == viewportRect);
 871     }
 872
 873     if(!clippingRect.IsEmpty())
 874     {
 875       if(!clippingRect.Intersect(viewportRect))
 876       {
 877         DALI_LOG_ERROR("Invalid clipping rect %d %d %d %d\n", clippingRect.x, clippingRect.y, clippingRect.width, clippingRect.height);
 878         clippingRect = Rect<int>();
 879       }
 880       clearFullFrameRect = false;
 881     }
 882
 883     Graphics::Rect2D scissorArea{viewportRect.x, viewportRect.y, uint32_t(viewportRect.width), uint32_t(viewportRect.height)};
 884     if(instruction.mIsClearColorSet)
 885     {
 886       if(!clearFullFrameRect)
 887       {
 888         if(!clippingRect.IsEmpty())
 889         {
 890           scissorArea = {clippingRect.x, clippingRect.y, uint32_t(clippingRect.width), uint32_t(clippingRect.height)};
 891         }
 892       }
 893     }
 894
 895     // Scissor's value should be set based on the default system coordinates.
 896     // When the surface is rotated, the input values already were set with the rotated angle.
 897     // So, re-calculation is needed.
 898     scissorArea = RecalculateScissorArea(scissorArea, surfaceOrientation, viewportRect);
 899
 900     // Begin render pass
 901     mainCommandBuffer->BeginRenderPass(
 902       currentRenderPass,
 903       currentRenderTarget,
 904       scissorArea,
 905       currentClearValues);
 906
 907     mainCommandBuffer->SetViewport({float(viewportRect.x),
 908                                     float(viewportRect.y),
 909                                     float(viewportRect.width),
 910                                     float(viewportRect.height)});
 911
 912     // Clear the list of bound textures
 913     mImpl->boundTextures.Clear();
 914
 915     mImpl->renderAlgorithms.ProcessRenderInstruction(
 916       instruction,
 917       mImpl->renderBufferIndex,
 918       depthBufferAvailable,
 919       stencilBufferAvailable,
 920       mImpl->boundTextures,
 921       viewportRect,
 922       clippingRect,
 923       surfaceOrientation);
 924
 925     Graphics::SyncObject* syncObject{nullptr};
 926     // If the render instruction has an associated render tracker (owned separately)
 927     // and framebuffer, create a one shot sync object, and use it to determine when
 928     // the render pass has finished executing on GPU.
 929     if(instruction.mRenderTracker && instruction.mFrameBuffer)
 930     {
 931       syncObject                 = instruction.mRenderTracker->CreateSyncObject(mImpl->graphicsController);
 932       instruction.mRenderTracker = nullptr;
 933     }
 934     mainCommandBuffer->EndRenderPass(syncObject);
 935   }
 936   mImpl->renderAlgorithms.SubmitCommandBuffer();
 937
 938   std::sort(targetstoPresent.begin(), targetstoPresent.end());
 939
 940   Graphics::RenderTarget* rt = nullptr;
 941   for(auto& target : targetstoPresent)
 942   {
 943     if(target != rt)
 944     {
 945       mImpl->graphicsController.PresentRenderTarget(target);
 946       rt = target;
 947     }
 948   }
 949 }
 950
 951 void RenderManager::PostRender(bool uploadOnly)
 952 {
 953   // Notify RenderGeometries that rendering has finished
 954   for(auto&& iter : mImpl->geometryContainer)
 955   {
 956     iter->OnRenderFinished();
 957   }
 958
 959   mImpl->UpdateTrackers();
 960
 961   uint32_t count = 0u;
 962   for(auto& scene : mImpl->sceneContainer)
 963   {
 964     count += scene->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 965   }
 966
 967   const bool haveInstructions = count > 0u;
 968
 969   // If this frame was rendered due to instructions existing, we mark this so we know to clear the next frame.
 970   mImpl->lastFrameWasRendered = haveInstructions;
 971
 972   /**
 973    * The rendering has finished; swap to the next buffer.
 974    * Ideally the update has just finished using this buffer; otherwise the render thread
 975    * should block until the update has finished.
 976    */
 977   mImpl->renderBufferIndex = (0 != mImpl->renderBufferIndex) ? 0 : 1;
 978
 979   DALI_PRINT_RENDER_END();
 980 }
 981
 982 } // namespace SceneGraph
 983
 984 } // namespace Internal
 985
 986 } // namespace Dali