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 #include <dali/integration-api/gl-context-helper-abstraction.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/render-tasks/scene-graph-camera.h>
  33
  34 #include <dali/internal/render/common/render-algorithms.h>
  35 #include <dali/internal/render/common/render-debug.h>
  36 #include <dali/internal/render/common/render-instruction.h>
  37 #include <dali/internal/render/common/render-tracker.h>
  38 #include <dali/internal/render/queue/render-queue.h>
  39 #include <dali/internal/render/renderers/render-frame-buffer.h>
  40 #include <dali/internal/render/renderers/render-texture.h>
  41 #include <dali/internal/render/renderers/shader-cache.h>
  42 #include <dali/internal/render/renderers/uniform-buffer-manager.h>
  43 #include <dali/internal/render/shaders/program-controller.h>
  44
  45 namespace Dali
  46 {
  47 namespace Internal
  48 {
  49 namespace SceneGraph
  50 {
  51 #if defined(DEBUG_ENABLED)
  52 namespace
  53 {
  54 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_RENDER_MANAGER");
  55 } // unnamed namespace
  56 #endif
  57
  58 /**
  59  * Structure to contain internal data
  60  */
  61 struct RenderManager::Impl
  62 {
  63   Impl(Graphics::Controller&               graphicsController,
  64        Integration::DepthBufferAvailable   depthBufferAvailableParam,
  65        Integration::StencilBufferAvailable stencilBufferAvailableParam,
  66        Integration::PartialUpdateAvailable partialUpdateAvailableParam)
  67   : graphicsController(graphicsController),
  68     renderQueue(),
  69     renderAlgorithms(graphicsController),
  70     frameCount(0u),
  71     renderBufferIndex(SceneGraphBuffers::INITIAL_UPDATE_BUFFER_INDEX),
  72     rendererContainer(),
  73     samplerContainer(),
  74     textureContainer(),
  75     frameBufferContainer(),
  76     lastFrameWasRendered(false),
  77     programController(graphicsController),
  78     shaderCache(graphicsController),
  79     depthBufferAvailable(depthBufferAvailableParam),
  80     stencilBufferAvailable(stencilBufferAvailableParam),
  81     partialUpdateAvailable(partialUpdateAvailableParam)
  82   {
  83     // Create thread pool with just one thread ( there may be a need to create more threads in the future ).
  84     threadPool = std::unique_ptr<Dali::ThreadPool>(new Dali::ThreadPool());
  85     threadPool->Initialize(1u);
  86
  87     uniformBufferManager.reset(new Render::UniformBufferManager(&graphicsController));
  88   }
  89
  90   ~Impl()
  91   {
  92     threadPool.reset(nullptr); // reset now to maintain correct destruction order
  93   }
  94
  95   void AddRenderTracker(Render::RenderTracker* renderTracker)
  96   {
  97     DALI_ASSERT_DEBUG(renderTracker != nullptr);
  98     mRenderTrackers.PushBack(renderTracker);
  99   }
 100
 101   void RemoveRenderTracker(Render::RenderTracker* renderTracker)
 102   {
 103     mRenderTrackers.EraseObject(renderTracker);
 104   }
 105
 106   void UpdateTrackers()
 107   {
 108     for(auto&& iter : mRenderTrackers)
 109     {
 110       iter->PollSyncObject();
 111     }
 112   }
 113
 114   // the order is important for destruction,
 115   Graphics::Controller& graphicsController;
 116   RenderQueue           renderQueue; ///< A message queue for receiving messages from the update-thread.
 117
 118   std::vector<SceneGraph::Scene*> sceneContainer; ///< List of pointers to the scene graph objects of the scenes
 119
 120   Render::RenderAlgorithms renderAlgorithms; ///< The RenderAlgorithms object is used to action the renders required by a RenderInstruction
 121
 122   uint32_t    frameCount;        ///< The current frame count
 123   BufferIndex renderBufferIndex; ///< The index of the buffer to read from; this is opposite of the "update" buffer
 124
 125   OwnerContainer<Render::Renderer*>     rendererContainer;     ///< List of owned renderers
 126   OwnerContainer<Render::Sampler*>      samplerContainer;      ///< List of owned samplers
 127   OwnerContainer<Render::Texture*>      textureContainer;      ///< List of owned textures
 128   OwnerContainer<Render::FrameBuffer*>  frameBufferContainer;  ///< List of owned framebuffers
 129   OwnerContainer<Render::VertexBuffer*> vertexBufferContainer; ///< List of owned vertex buffers
 130   OwnerContainer<Render::Geometry*>     geometryContainer;     ///< List of owned Geometries
 131
 132   bool lastFrameWasRendered; ///< Keeps track of the last frame being rendered due to having render instructions
 133
 134   OwnerContainer<Render::RenderTracker*> mRenderTrackers; ///< List of render trackers
 135
 136   ProgramController   programController; ///< Owner of the GL programs
 137   Render::ShaderCache shaderCache;       ///< The cache for the graphics shaders
 138
 139   std::unique_ptr<Render::UniformBufferManager> uniformBufferManager; ///< The uniform buffer manager
 140
 141   Integration::DepthBufferAvailable   depthBufferAvailable;   ///< Whether the depth buffer is available
 142   Integration::StencilBufferAvailable stencilBufferAvailable; ///< Whether the stencil buffer is available
 143   Integration::PartialUpdateAvailable partialUpdateAvailable; ///< Whether the partial update is available
 144
 145   std::unique_ptr<Dali::ThreadPool> threadPool;            ///< The thread pool
 146   Vector<Graphics::Texture*>        boundTextures;         ///< The textures bound for rendering
 147   Vector<Graphics::Texture*>        textureDependencyList; ///< The dependency list of bound textures
 148 };
 149
 150 RenderManager* RenderManager::New(Graphics::Controller&               graphicsController,
 151                                   Integration::DepthBufferAvailable   depthBufferAvailable,
 152                                   Integration::StencilBufferAvailable stencilBufferAvailable,
 153                                   Integration::PartialUpdateAvailable partialUpdateAvailable)
 154 {
 155   auto* manager  = new RenderManager;
 156   manager->mImpl = new Impl(graphicsController,
 157                             depthBufferAvailable,
 158                             stencilBufferAvailable,
 159                             partialUpdateAvailable);
 160   return manager;
 161 }
 162
 163 RenderManager::RenderManager()
 164 : mImpl(nullptr)
 165 {
 166 }
 167
 168 RenderManager::~RenderManager()
 169 {
 170   delete mImpl;
 171 }
 172
 173 RenderQueue& RenderManager::GetRenderQueue()
 174 {
 175   return mImpl->renderQueue;
 176 }
 177
 178 void RenderManager::SetShaderSaver(ShaderSaver& upstream)
 179 {
 180 }
 181
 182 void RenderManager::AddRenderer(OwnerPointer<Render::Renderer>& renderer)
 183 {
 184   // Initialize the renderer as we are now in render thread
 185   renderer->Initialize(mImpl->graphicsController, mImpl->programController, mImpl->shaderCache, *(mImpl->uniformBufferManager.get()));
 186
 187   mImpl->rendererContainer.PushBack(renderer.Release());
 188 }
 189
 190 void RenderManager::RemoveRenderer(Render::Renderer* renderer)
 191 {
 192   mImpl->rendererContainer.EraseObject(renderer);
 193 }
 194
 195 void RenderManager::AddSampler(OwnerPointer<Render::Sampler>& sampler)
 196 {
 197   sampler->Initialize(mImpl->graphicsController);
 198   mImpl->samplerContainer.PushBack(sampler.Release());
 199 }
 200
 201 void RenderManager::RemoveSampler(Render::Sampler* sampler)
 202 {
 203   mImpl->samplerContainer.EraseObject(sampler);
 204 }
 205
 206 void RenderManager::AddTexture(OwnerPointer<Render::Texture>& texture)
 207 {
 208   texture->Initialize(mImpl->graphicsController);
 209   mImpl->textureContainer.PushBack(texture.Release());
 210 }
 211
 212 void RenderManager::RemoveTexture(Render::Texture* texture)
 213 {
 214   DALI_ASSERT_DEBUG(NULL != texture);
 215
 216   // Find the texture, use reference to pointer so we can do the erase safely
 217   for(auto&& iter : mImpl->textureContainer)
 218   {
 219     if(iter == texture)
 220     {
 221       texture->Destroy();
 222       mImpl->textureContainer.Erase(&iter); // Texture found; now destroy it
 223       return;
 224     }
 225   }
 226 }
 227
 228 void RenderManager::UploadTexture(Render::Texture* texture, PixelDataPtr pixelData, const Texture::UploadParams& params)
 229 {
 230   texture->Upload(pixelData, params);
 231 }
 232
 233 void RenderManager::GenerateMipmaps(Render::Texture* texture)
 234 {
 235   texture->GenerateMipmaps();
 236 }
 237
 238 void RenderManager::SetFilterMode(Render::Sampler* sampler, uint32_t minFilterMode, uint32_t magFilterMode)
 239 {
 240   sampler->SetFilterMode(static_cast<Dali::FilterMode::Type>(minFilterMode),
 241                          static_cast<Dali::FilterMode::Type>(magFilterMode));
 242 }
 243
 244 void RenderManager::SetWrapMode(Render::Sampler* sampler, uint32_t rWrapMode, uint32_t sWrapMode, uint32_t tWrapMode)
 245 {
 246   sampler->SetWrapMode(static_cast<Dali::WrapMode::Type>(rWrapMode),
 247                        static_cast<Dali::WrapMode::Type>(sWrapMode),
 248                        static_cast<Dali::WrapMode::Type>(tWrapMode));
 249 }
 250
 251 void RenderManager::AddFrameBuffer(OwnerPointer<Render::FrameBuffer>& frameBuffer)
 252 {
 253   Render::FrameBuffer* frameBufferPtr = frameBuffer.Release();
 254   mImpl->frameBufferContainer.PushBack(frameBufferPtr);
 255   frameBufferPtr->Initialize(mImpl->graphicsController);
 256 }
 257
 258 void RenderManager::RemoveFrameBuffer(Render::FrameBuffer* frameBuffer)
 259 {
 260   DALI_ASSERT_DEBUG(nullptr != frameBuffer);
 261
 262   // Find the sampler, use reference so we can safely do the erase
 263   for(auto&& iter : mImpl->frameBufferContainer)
 264   {
 265     if(iter == frameBuffer)
 266     {
 267       frameBuffer->Destroy();
 268       mImpl->frameBufferContainer.Erase(&iter); // frameBuffer found; now destroy it
 269
 270       break;
 271     }
 272   }
 273 }
 274
 275 void RenderManager::InitializeScene(SceneGraph::Scene* scene)
 276 {
 277   scene->Initialize(mImpl->graphicsController, mImpl->depthBufferAvailable, mImpl->stencilBufferAvailable);
 278   mImpl->sceneContainer.push_back(scene);
 279 }
 280
 281 void RenderManager::UninitializeScene(SceneGraph::Scene* scene)
 282 {
 283   auto iter = std::find(mImpl->sceneContainer.begin(), mImpl->sceneContainer.end(), scene);
 284   if(iter != mImpl->sceneContainer.end())
 285   {
 286     mImpl->sceneContainer.erase(iter);
 287   }
 288 }
 289
 290 void RenderManager::SurfaceReplaced(SceneGraph::Scene* scene)
 291 {
 292   scene->Initialize(mImpl->graphicsController, mImpl->depthBufferAvailable, mImpl->stencilBufferAvailable);
 293 }
 294
 295 void RenderManager::AttachColorTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel, uint32_t layer)
 296 {
 297   frameBuffer->AttachColorTexture(texture, mipmapLevel, layer);
 298 }
 299
 300 void RenderManager::AttachDepthTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 301 {
 302   frameBuffer->AttachDepthTexture(texture, mipmapLevel);
 303 }
 304
 305 void RenderManager::AttachDepthStencilTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 306 {
 307   frameBuffer->AttachDepthStencilTexture(texture, mipmapLevel);
 308 }
 309
 310 void RenderManager::AddVertexBuffer(OwnerPointer<Render::VertexBuffer>& vertexBuffer)
 311 {
 312   mImpl->vertexBufferContainer.PushBack(vertexBuffer.Release());
 313 }
 314
 315 void RenderManager::RemoveVertexBuffer(Render::VertexBuffer* vertexBuffer)
 316 {
 317   mImpl->vertexBufferContainer.EraseObject(vertexBuffer);
 318 }
 319
 320 void RenderManager::SetVertexBufferFormat(Render::VertexBuffer* vertexBuffer, OwnerPointer<Render::VertexBuffer::Format>& format)
 321 {
 322   vertexBuffer->SetFormat(format.Release());
 323 }
 324
 325 void RenderManager::SetVertexBufferData(Render::VertexBuffer* vertexBuffer, OwnerPointer<Vector<uint8_t>>& data, uint32_t size)
 326 {
 327   vertexBuffer->SetData(data.Release(), size);
 328 }
 329
 330 void RenderManager::SetIndexBuffer(Render::Geometry* geometry, Dali::Vector<uint16_t>& indices)
 331 {
 332   geometry->SetIndexBuffer(indices);
 333 }
 334
 335 void RenderManager::AddGeometry(OwnerPointer<Render::Geometry>& geometry)
 336 {
 337   mImpl->geometryContainer.PushBack(geometry.Release());
 338 }
 339
 340 void RenderManager::RemoveGeometry(Render::Geometry* geometry)
 341 {
 342   mImpl->geometryContainer.EraseObject(geometry);
 343 }
 344
 345 void RenderManager::AttachVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 346 {
 347   DALI_ASSERT_DEBUG(nullptr != geometry);
 348
 349   // Find the geometry
 350   for(auto&& iter : mImpl->geometryContainer)
 351   {
 352     if(iter == geometry)
 353     {
 354       iter->AddVertexBuffer(vertexBuffer);
 355       break;
 356     }
 357   }
 358 }
 359
 360 void RenderManager::RemoveVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 361 {
 362   DALI_ASSERT_DEBUG(nullptr != geometry);
 363
 364   // Find the geometry
 365   for(auto&& iter : mImpl->geometryContainer)
 366   {
 367     if(iter == geometry)
 368     {
 369       iter->RemoveVertexBuffer(vertexBuffer);
 370       break;
 371     }
 372   }
 373 }
 374
 375 void RenderManager::SetGeometryType(Render::Geometry* geometry, uint32_t geometryType)
 376 {
 377   geometry->SetType(Render::Geometry::Type(geometryType));
 378 }
 379
 380 void RenderManager::AddRenderTracker(Render::RenderTracker* renderTracker)
 381 {
 382   mImpl->AddRenderTracker(renderTracker);
 383 }
 384
 385 void RenderManager::RemoveRenderTracker(Render::RenderTracker* renderTracker)
 386 {
 387   mImpl->RemoveRenderTracker(renderTracker);
 388 }
 389
 390 void RenderManager::PreRender(Integration::RenderStatus& status, bool forceClear, bool uploadOnly)
 391 {
 392   DALI_PRINT_RENDER_START(mImpl->renderBufferIndex);
 393
 394   // Increment the frame count at the beginning of each frame
 395   ++mImpl->frameCount;
 396
 397   // Process messages queued during previous update
 398   mImpl->renderQueue.ProcessMessages(mImpl->renderBufferIndex);
 399
 400   uint32_t count = 0u;
 401   for(auto& i : mImpl->sceneContainer)
 402   {
 403     count += i->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 404   }
 405
 406   const bool haveInstructions = count > 0u;
 407
 408   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");
 409
 410   // Only render if we have instructions to render, or the last frame was rendered (and therefore a clear is required).
 411   if(haveInstructions || mImpl->lastFrameWasRendered || forceClear)
 412   {
 413     DALI_LOG_INFO(gLogFilter, Debug::General, "Render: Processing\n");
 414
 415     // Upload the geometries
 416     for(auto& i : mImpl->sceneContainer)
 417     {
 418       RenderInstructionContainer& instructions = i->GetRenderInstructions();
 419       for(uint32_t j = 0; j < instructions.Count(mImpl->renderBufferIndex); ++j)
 420       {
 421         RenderInstruction& instruction = instructions.At(mImpl->renderBufferIndex, j);
 422
 423         const Matrix* viewMatrix       = instruction.GetViewMatrix(mImpl->renderBufferIndex);
 424         const Matrix* projectionMatrix = instruction.GetProjectionMatrix(mImpl->renderBufferIndex);
 425
 426         DALI_ASSERT_DEBUG(viewMatrix);
 427         DALI_ASSERT_DEBUG(projectionMatrix);
 428
 429         if(viewMatrix && projectionMatrix)
 430         {
 431           const RenderListContainer::SizeType renderListCount = instruction.RenderListCount();
 432
 433           // Iterate through each render list.
 434           for(RenderListContainer::SizeType index = 0; index < renderListCount; ++index)
 435           {
 436             const RenderList* renderList = instruction.GetRenderList(index);
 437
 438             if(renderList && !renderList->IsEmpty())
 439             {
 440               const std::size_t itemCount = renderList->Count();
 441               for(uint32_t itemIndex = 0u; itemIndex < itemCount; ++itemIndex)
 442               {
 443                 const RenderItem& item = renderList->GetItem(itemIndex);
 444                 if(DALI_LIKELY(item.mRenderer))
 445                 {
 446                   item.mRenderer->Upload();
 447                 }
 448               }
 449             }
 450           }
 451         }
 452       }
 453     }
 454   }
 455 }
 456
 457 void RenderManager::PreRender(Integration::Scene& scene, std::vector<Rect<int>>& damagedRects)
 458 {
 459   if(mImpl->partialUpdateAvailable != Integration::PartialUpdateAvailable::TRUE)
 460   {
 461     return;
 462   }
 463
 464   Internal::Scene&   sceneInternal = GetImplementation(scene);
 465   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 466
 467   if(sceneObject->IsRenderingSkipped())
 468   {
 469     // We don't need to calculate dirty rects
 470     return;
 471   }
 472
 473   class DamagedRectsCleaner
 474   {
 475   public:
 476     explicit DamagedRectsCleaner(std::vector<Rect<int>>& damagedRects)
 477     : mDamagedRects(damagedRects),
 478       mCleanOnReturn(true)
 479     {
 480     }
 481
 482     void SetCleanOnReturn(bool cleanOnReturn)
 483     {
 484       mCleanOnReturn = cleanOnReturn;
 485     }
 486
 487     ~DamagedRectsCleaner()
 488     {
 489       if(mCleanOnReturn)
 490       {
 491         mDamagedRects.clear();
 492       }
 493     }
 494
 495   private:
 496     std::vector<Rect<int>>& mDamagedRects;
 497     bool                    mCleanOnReturn;
 498   };
 499
 500   Rect<int32_t> surfaceRect = sceneObject->GetSurfaceRect();
 501
 502   // Clean collected dirty/damaged rects on exit if 3d layer or 3d node or other conditions.
 503   DamagedRectsCleaner damagedRectCleaner(damagedRects);
 504
 505   // Mark previous dirty rects in the sorted array. The array is already sorted by node and renderer, frame number.
 506   // so you don't need to sort: std::stable_sort(itemsDirtyRects.begin(), itemsDirtyRects.end());
 507   std::vector<DirtyRect>& itemsDirtyRects = sceneInternal.GetItemsDirtyRects();
 508   for(DirtyRect& dirtyRect : itemsDirtyRects)
 509   {
 510     dirtyRect.visited = false;
 511   }
 512
 513   uint32_t instructionCount = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 514   for(uint32_t i = 0; i < instructionCount; ++i)
 515   {
 516     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 517
 518     if(instruction.mFrameBuffer)
 519     {
 520       return; // TODO: reset, we don't deal with render tasks with framebuffers (for now)
 521     }
 522
 523     const Camera* camera = instruction.GetCamera();
 524     if(camera->mType == Camera::DEFAULT_TYPE && camera->mTargetPosition == Camera::DEFAULT_TARGET_POSITION)
 525     {
 526       const Node* node = instruction.GetCamera()->GetNode();
 527       if(node)
 528       {
 529         Vector3    position;
 530         Vector3    scale;
 531         Quaternion orientation;
 532         node->GetWorldMatrix(mImpl->renderBufferIndex).GetTransformComponents(position, orientation, scale);
 533
 534         Vector3 orientationAxis;
 535         Radian  orientationAngle;
 536         orientation.ToAxisAngle(orientationAxis, orientationAngle);
 537
 538         if(position.x > Math::MACHINE_EPSILON_10000 ||
 539            position.y > Math::MACHINE_EPSILON_10000 ||
 540            orientationAxis != Vector3(0.0f, 1.0f, 0.0f) ||
 541            orientationAngle != ANGLE_180 ||
 542            scale != Vector3(1.0f, 1.0f, 1.0f))
 543         {
 544           return;
 545         }
 546       }
 547     }
 548     else
 549     {
 550       return;
 551     }
 552
 553     Rect<int32_t> viewportRect;
 554     if(instruction.mIsViewportSet)
 555     {
 556       const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 557       viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 558       if(viewportRect.IsEmpty() || !viewportRect.IsValid())
 559       {
 560         return; // just skip funny use cases for now, empty viewport means it is set somewhere else
 561       }
 562     }
 563     else
 564     {
 565       viewportRect = surfaceRect;
 566     }
 567
 568     const Matrix* viewMatrix       = instruction.GetViewMatrix(mImpl->renderBufferIndex);
 569     const Matrix* projectionMatrix = instruction.GetProjectionMatrix(mImpl->renderBufferIndex);
 570     if(viewMatrix && projectionMatrix)
 571     {
 572       const RenderListContainer::SizeType count = instruction.RenderListCount();
 573       for(RenderListContainer::SizeType index = 0u; index < count; ++index)
 574       {
 575         const RenderList* renderList = instruction.GetRenderList(index);
 576         if(renderList && !renderList->IsEmpty())
 577         {
 578           const std::size_t listCount = renderList->Count();
 579           for(uint32_t listIndex = 0u; listIndex < listCount; ++listIndex)
 580           {
 581             RenderItem& item = renderList->GetItem(listIndex);
 582             // If the item does 3D transformation, do early exit and clean the damaged rect array
 583             if(item.mUpdateSize == Vector3::ZERO)
 584             {
 585               return;
 586             }
 587
 588             Rect<int> rect;
 589             DirtyRect dirtyRect(item.mNode, item.mRenderer, mImpl->frameCount, rect);
 590             // If the item refers to updated node or renderer.
 591             if(item.mIsUpdated ||
 592                (item.mNode &&
 593                 (item.mNode->Updated() || (item.mRenderer && item.mRenderer->Updated(mImpl->renderBufferIndex, item.mNode)))))
 594             {
 595               item.mIsUpdated = false;
 596               item.mNode->SetUpdated(false);
 597
 598               rect = item.CalculateViewportSpaceAABB(item.mUpdateSize, viewportRect.width, viewportRect.height);
 599               if(rect.IsValid() && rect.Intersect(viewportRect) && !rect.IsEmpty())
 600               {
 601                 const int left   = rect.x;
 602                 const int top    = rect.y;
 603                 const int right  = rect.x + rect.width;
 604                 const int bottom = rect.y + rect.height;
 605                 rect.x           = (left / 16) * 16;
 606                 rect.y           = (top / 16) * 16;
 607                 rect.width       = ((right + 16) / 16) * 16 - rect.x;
 608                 rect.height      = ((bottom + 16) / 16) * 16 - rect.y;
 609
 610                 // Found valid dirty rect.
 611                 // 1. Insert it in the sorted array of the dirty rects.
 612                 // 2. Mark the related dirty rects as visited so they will not be removed below.
 613                 // 3. Keep only last 3 dirty rects for the same node and renderer (Tizen uses 3 back buffers, Ubuntu 1).
 614                 dirtyRect.rect    = rect;
 615                 auto dirtyRectPos = std::lower_bound(itemsDirtyRects.begin(), itemsDirtyRects.end(), dirtyRect);
 616                 dirtyRectPos      = itemsDirtyRects.insert(dirtyRectPos, dirtyRect);
 617
 618                 int c = 1;
 619                 while(++dirtyRectPos != itemsDirtyRects.end())
 620                 {
 621                   if(dirtyRectPos->node != item.mNode || dirtyRectPos->renderer != item.mRenderer)
 622                   {
 623                     break;
 624                   }
 625
 626                   dirtyRectPos->visited = true;
 627                   Rect<int>& dirtRect   = dirtyRectPos->rect;
 628                   rect.Merge(dirtRect);
 629
 630                   c++;
 631                   if(c > 3) // no more then 3 previous rects
 632                   {
 633                     itemsDirtyRects.erase(dirtyRectPos);
 634                     break;
 635                   }
 636                 }
 637
 638                 damagedRects.push_back(rect);
 639               }
 640             }
 641             else
 642             {
 643               // 1. The item is not dirty, the node and renderer referenced by the item are still exist.
 644               // 2. Mark the related dirty rects as visited so they will not be removed below.
 645               auto dirtyRectPos = std::lower_bound(itemsDirtyRects.begin(), itemsDirtyRects.end(), dirtyRect);
 646               while(dirtyRectPos != itemsDirtyRects.end())
 647               {
 648                 if(dirtyRectPos->node != item.mNode || dirtyRectPos->renderer != item.mRenderer)
 649                 {
 650                   break;
 651                 }
 652
 653                 dirtyRectPos->visited = true;
 654                 dirtyRectPos++;
 655               }
 656             }
 657           }
 658         }
 659       }
 660     }
 661   }
 662
 663   // Check removed nodes or removed renderers dirty rects
 664   auto i = itemsDirtyRects.begin();
 665   auto j = itemsDirtyRects.begin();
 666   while(i != itemsDirtyRects.end())
 667   {
 668     if(i->visited)
 669     {
 670       *j++ = *i;
 671     }
 672     else
 673     {
 674       Rect<int>& dirtRect = i->rect;
 675       damagedRects.push_back(dirtRect);
 676     }
 677     i++;
 678   }
 679
 680   itemsDirtyRects.resize(j - itemsDirtyRects.begin());
 681   damagedRectCleaner.SetCleanOnReturn(false);
 682 }
 683
 684 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo)
 685 {
 686   Rect<int> clippingRect;
 687   RenderScene(status, scene, renderToFbo, clippingRect);
 688 }
 689
 690 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo, Rect<int>& clippingRect)
 691 {
 692   // Reset main algorithms command buffer
 693   mImpl->renderAlgorithms.ResetCommandBuffer();
 694
 695   auto mainCommandBuffer = mImpl->renderAlgorithms.GetMainCommandBuffer();
 696
 697   Internal::Scene&   sceneInternal = GetImplementation(scene);
 698   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 699
 700   uint32_t count = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 701
 702   std::vector<Graphics::RenderTarget*> targetstoPresent;
 703
 704   for(uint32_t i = 0; i < count; ++i)
 705   {
 706     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 707
 708     if((renderToFbo && !instruction.mFrameBuffer) || (!renderToFbo && instruction.mFrameBuffer))
 709     {
 710       continue; // skip
 711     }
 712
 713     // Mark that we will require a post-render step to be performed (includes swap-buffers).
 714     status.SetNeedsPostRender(true);
 715
 716     Rect<int32_t> viewportRect;
 717
 718     Rect<int32_t> surfaceRect        = sceneObject->GetSurfaceRect();
 719     int32_t       surfaceOrientation = sceneObject->GetSurfaceOrientation();
 720
 721     // @todo Should these be part of scene?
 722     Integration::DepthBufferAvailable   depthBufferAvailable   = mImpl->depthBufferAvailable;
 723     Integration::StencilBufferAvailable stencilBufferAvailable = mImpl->stencilBufferAvailable;
 724
 725     Graphics::RenderTarget*           currentRenderTarget = nullptr;
 726     Graphics::RenderPass*             currentRenderPass   = nullptr;
 727     std::vector<Graphics::ClearValue> currentClearValues{};
 728
 729     if(instruction.mFrameBuffer)
 730     {
 731       // Ensure graphics framebuffer is created, bind attachments and create render passes
 732       // Only happens once per framebuffer. If the create fails, e.g. no attachments yet,
 733       // then don't render to this framebuffer.
 734       if(!instruction.mFrameBuffer->GetGraphicsObject())
 735       {
 736         const bool created = instruction.mFrameBuffer->CreateGraphicsObjects();
 737         if(!created)
 738         {
 739           continue;
 740         }
 741       }
 742
 743       auto& clearValues = instruction.mFrameBuffer->GetGraphicsRenderPassClearValues();
 744
 745       // Set the clear color for first color attachment
 746       if(instruction.mIsClearColorSet && !clearValues.empty())
 747       {
 748         clearValues[0].color = {
 749           instruction.mClearColor.r,
 750           instruction.mClearColor.g,
 751           instruction.mClearColor.b,
 752           instruction.mClearColor.a};
 753       }
 754
 755       currentClearValues = clearValues;
 756
 757       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 758
 759       // offscreen buffer
 760       currentRenderTarget = instruction.mFrameBuffer->GetGraphicsRenderTarget();
 761       currentRenderPass   = instruction.mFrameBuffer->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 762     }
 763     else // no framebuffer
 764     {
 765       // surface
 766       auto& clearValues = sceneObject->GetGraphicsRenderPassClearValues();
 767
 768       if(instruction.mIsClearColorSet)
 769       {
 770         clearValues[0].color = {
 771           instruction.mClearColor.r,
 772           instruction.mClearColor.g,
 773           instruction.mClearColor.b,
 774           instruction.mClearColor.a};
 775       }
 776
 777       currentClearValues = clearValues;
 778
 779       // @todo SceneObject should already have the depth clear / stencil clear in the clearValues array.
 780       // if the window has a depth/stencil buffer.
 781       if((depthBufferAvailable == Integration::DepthBufferAvailable::TRUE ||
 782           stencilBufferAvailable == Integration::StencilBufferAvailable::TRUE) &&
 783          (currentClearValues.size() <= 1))
 784       {
 785         currentClearValues.emplace_back();
 786         currentClearValues.back().depthStencil.depth   = 0;
 787         currentClearValues.back().depthStencil.stencil = 0;
 788       }
 789
 790       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 791
 792       currentRenderTarget = sceneObject->GetSurfaceRenderTarget();
 793       currentRenderPass   = sceneObject->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 794     }
 795
 796     targetstoPresent.emplace_back(currentRenderTarget);
 797
 798     // reset the program matrices for all programs once per frame
 799     // this ensures we will set view and projection matrix once per program per camera
 800     mImpl->programController.ResetProgramMatrices();
 801
 802     if(instruction.mFrameBuffer)
 803     {
 804       // For each offscreen buffer, update the dependency list with the new texture id used by this frame buffer.
 805       for(unsigned int i0 = 0, i1 = instruction.mFrameBuffer->GetColorAttachmentCount(); i0 < i1; ++i0)
 806       {
 807         mImpl->textureDependencyList.PushBack(instruction.mFrameBuffer->GetTexture(i0));
 808       }
 809     }
 810
 811     if(!instruction.mIgnoreRenderToFbo && (instruction.mFrameBuffer != nullptr))
 812     {
 813       // Offscreen buffer rendering
 814       if(instruction.mIsViewportSet)
 815       {
 816         // For glViewport the lower-left corner is (0,0)
 817         const int32_t y = (instruction.mFrameBuffer->GetHeight() - instruction.mViewport.height) - instruction.mViewport.y;
 818         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 819       }
 820       else
 821       {
 822         viewportRect.Set(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
 823       }
 824       surfaceOrientation = 0;
 825     }
 826     else // No Offscreen frame buffer rendering
 827     {
 828       // Check whether a viewport is specified, otherwise the full surface size is used
 829       if(instruction.mIsViewportSet)
 830       {
 831         // For glViewport the lower-left corner is (0,0)
 832         const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 833         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 834       }
 835       else
 836       {
 837         viewportRect = surfaceRect;
 838       }
 839     }
 840
 841     // Set surface orientation
 842     // @todo Inform graphics impl by another route.
 843     // was: mImpl->currentContext->SetSurfaceOrientation(surfaceOrientation);
 844
 845     /*** Clear region of framebuffer or surface before drawing ***/
 846     bool clearFullFrameRect = (surfaceRect == viewportRect);
 847     if(instruction.mFrameBuffer != nullptr)
 848     {
 849       Viewport frameRect(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
 850       clearFullFrameRect = (frameRect == viewportRect);
 851     }
 852
 853     if(!clippingRect.IsEmpty())
 854     {
 855       if(!clippingRect.Intersect(viewportRect))
 856       {
 857         DALI_LOG_ERROR("Invalid clipping rect %d %d %d %d\n", clippingRect.x, clippingRect.y, clippingRect.width, clippingRect.height);
 858         clippingRect = Rect<int>();
 859       }
 860       clearFullFrameRect = false;
 861     }
 862
 863     Graphics::Rect2D scissorArea{viewportRect.x, viewportRect.y, uint32_t(viewportRect.width), uint32_t(viewportRect.height)};
 864     if(instruction.mIsClearColorSet)
 865     {
 866       if(!clearFullFrameRect)
 867       {
 868         if(!clippingRect.IsEmpty())
 869         {
 870           scissorArea = {clippingRect.x, clippingRect.y, uint32_t(clippingRect.width), uint32_t(clippingRect.height)};
 871         }
 872       }
 873     }
 874
 875     // Begin render pass
 876     mainCommandBuffer->BeginRenderPass(
 877       currentRenderPass,
 878       currentRenderTarget,
 879       scissorArea,
 880       currentClearValues);
 881
 882     mainCommandBuffer->SetViewport({float(viewportRect.x),
 883                                     float(viewportRect.y),
 884                                     float(viewportRect.width),
 885                                     float(viewportRect.height)});
 886
 887     // Clear the list of bound textures
 888     mImpl->boundTextures.Clear();
 889
 890     mImpl->renderAlgorithms.ProcessRenderInstruction(
 891       instruction,
 892       mImpl->renderBufferIndex,
 893       depthBufferAvailable,
 894       stencilBufferAvailable,
 895       mImpl->boundTextures,
 896       viewportRect,
 897       clippingRect,
 898       surfaceOrientation);
 899
 900     // Synchronise the FBO/Texture access
 901
 902     // Check whether any bound texture is in the dependency list
 903     bool textureFound = false;
 904
 905     if(mImpl->boundTextures.Count() > 0u && mImpl->textureDependencyList.Count() > 0u)
 906     {
 907       for(auto texture : mImpl->textureDependencyList)
 908       {
 909         textureFound = std::find_if(mImpl->boundTextures.Begin(), mImpl->boundTextures.End(), [texture](Graphics::Texture* graphicsTexture) {
 910                          return texture == graphicsTexture;
 911                        }) != mImpl->boundTextures.End();
 912       }
 913     }
 914
 915     if(textureFound)
 916     {
 917       if(instruction.mFrameBuffer)
 918       {
 919         // For off-screen buffer
 920
 921         // Clear the dependency list
 922         mImpl->textureDependencyList.Clear();
 923       }
 924       else
 925       {
 926         // Worker thread lambda function
 927         auto& glContextHelperAbstraction = mImpl->graphicsController.GetGlContextHelperAbstraction();
 928         auto  workerFunction             = [&glContextHelperAbstraction](int workerThread) {
 929           // Switch to the shared context in the worker thread
 930           glContextHelperAbstraction.MakeSurfacelessContextCurrent();
 931
 932           // Wait until all rendering calls for the shared context are executed
 933           glContextHelperAbstraction.WaitClient();
 934
 935           // Must clear the context in the worker thread
 936           // Otherwise the shared context cannot be switched to from the render thread
 937           glContextHelperAbstraction.MakeContextNull();
 938         };
 939
 940         auto future = mImpl->threadPool->SubmitTask(0u, workerFunction);
 941         if(future)
 942         {
 943           mImpl->threadPool->Wait();
 944
 945           // Clear the dependency list
 946           mImpl->textureDependencyList.Clear();
 947         }
 948       }
 949     }
 950
 951     if(instruction.mRenderTracker && instruction.mFrameBuffer)
 952     {
 953       // This will create a sync object every frame this render tracker
 954       // is alive (though it should be now be created only for
 955       // render-once render tasks)
 956       // @todo Add syncing to Graphics API
 957       instruction.mRenderTracker->CreateSyncObject(mImpl->graphicsController.GetGlSyncAbstraction());
 958       instruction.mRenderTracker = nullptr; // Only create once.
 959     }
 960
 961     // End render pass
 962     mainCommandBuffer->EndRenderPass();
 963   }
 964   mImpl->renderAlgorithms.SubmitCommandBuffer();
 965
 966   std::sort(targetstoPresent.begin(), targetstoPresent.end());
 967
 968   Graphics::RenderTarget* rt = nullptr;
 969   for(auto& target : targetstoPresent)
 970   {
 971     if(target != rt)
 972     {
 973       mImpl->graphicsController.PresentRenderTarget(target);
 974       rt = target;
 975     }
 976   }
 977 }
 978
 979 void RenderManager::PostRender(bool uploadOnly)
 980 {
 981   // Notify RenderGeometries that rendering has finished
 982   for(auto&& iter : mImpl->geometryContainer)
 983   {
 984     iter->OnRenderFinished();
 985   }
 986
 987   mImpl->UpdateTrackers();
 988
 989   uint32_t count = 0u;
 990   for(auto& scene : mImpl->sceneContainer)
 991   {
 992     count += scene->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 993   }
 994
 995   const bool haveInstructions = count > 0u;
 996
 997   // If this frame was rendered due to instructions existing, we mark this so we know to clear the next frame.
 998   mImpl->lastFrameWasRendered = haveInstructions;
 999
1000   /**
1001    * The rendering has finished; swap to the next buffer.
1002    * Ideally the update has just finished using this buffer; otherwise the render thread
1003    * should block until the update has finished.
1004    */
1005   mImpl->renderBufferIndex = (0 != mImpl->renderBufferIndex) ? 0 : 1;
1006
1007   DALI_PRINT_RENDER_END();
1008 }
1009
1010 } // namespace SceneGraph
1011
1012 } // namespace Internal
1013
1014 } // namespace Dali