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   : context(graphicsController.GetGlAbstraction(), &sceneContextContainer),
  68     currentContext(&context),
  69     graphicsController(graphicsController),
  70     renderQueue(),
  71     renderAlgorithms(graphicsController),
  72     frameCount(0u),
  73     renderBufferIndex(SceneGraphBuffers::INITIAL_UPDATE_BUFFER_INDEX),
  74     rendererContainer(),
  75     samplerContainer(),
  76     textureContainer(),
  77     frameBufferContainer(),
  78     lastFrameWasRendered(false),
  79     programController(graphicsController),
  80     shaderCache(graphicsController),
  81     depthBufferAvailable(depthBufferAvailableParam),
  82     stencilBufferAvailable(stencilBufferAvailableParam),
  83     partialUpdateAvailable(partialUpdateAvailableParam)
  84   {
  85     // Create thread pool with just one thread ( there may be a need to create more threads in the future ).
  86     threadPool = std::unique_ptr<Dali::ThreadPool>(new Dali::ThreadPool());
  87     threadPool->Initialize(1u);
  88
  89     uniformBufferManager.reset(new Render::UniformBufferManager(&graphicsController));
  90
  91   }
  92
  93   ~Impl()
  94   {
  95     threadPool.reset(nullptr); // reset now to maintain correct destruction order
  96   }
  97
  98   void AddRenderTracker(Render::RenderTracker* renderTracker)
  99   {
 100     DALI_ASSERT_DEBUG(renderTracker != NULL);
 101     mRenderTrackers.PushBack(renderTracker);
 102   }
 103
 104   void RemoveRenderTracker(Render::RenderTracker* renderTracker)
 105   {
 106     mRenderTrackers.EraseObject(renderTracker);
 107   }
 108
 109   Context* CreateSceneContext()
 110   {
 111     Context* context = new Context(graphicsController.GetGlAbstraction());
 112     sceneContextContainer.PushBack(context);
 113     return context;
 114   }
 115
 116   void DestroySceneContext(Context* sceneContext)
 117   {
 118     auto iter = std::find(sceneContextContainer.Begin(), sceneContextContainer.End(), sceneContext);
 119     if(iter != sceneContextContainer.End())
 120     {
 121       (*iter)->GlContextDestroyed();
 122       sceneContextContainer.Erase(iter);
 123     }
 124   }
 125
 126   Context* ReplaceSceneContext(Context* oldSceneContext)
 127   {
 128     Context* newContext = new Context(graphicsController.GetGlAbstraction());
 129
 130     oldSceneContext->GlContextDestroyed();
 131
 132     std::replace(sceneContextContainer.begin(), sceneContextContainer.end(), oldSceneContext, newContext);
 133     return newContext;
 134   }
 135
 136   void UpdateTrackers()
 137   {
 138     for(auto&& iter : mRenderTrackers)
 139     {
 140       iter->PollSyncObject();
 141     }
 142   }
 143
 144   // the order is important for destruction,
 145   // programs are owned by context at the moment.
 146   Context                  context;               ///< Holds the GL state of the share resource context
 147   Context*                 currentContext;        ///< Holds the GL state of the current context for rendering
 148   OwnerContainer<Context*> sceneContextContainer; ///< List of owned contexts holding the GL state per scene
 149   Graphics::Controller&    graphicsController;
 150   RenderQueue              renderQueue; ///< A message queue for receiving messages from the update-thread.
 151
 152   std::vector<SceneGraph::Scene*> sceneContainer; ///< List of pointers to the scene graph objects of the scenes
 153
 154   Render::RenderAlgorithms renderAlgorithms; ///< The RenderAlgorithms object is used to action the renders required by a RenderInstruction
 155
 156   uint32_t    frameCount;        ///< The current frame count
 157   BufferIndex renderBufferIndex; ///< The index of the buffer to read from; this is opposite of the "update" buffer
 158
 159   OwnerContainer<Render::Renderer*>     rendererContainer;     ///< List of owned renderers
 160   OwnerContainer<Render::Sampler*>      samplerContainer;      ///< List of owned samplers
 161   OwnerContainer<Render::Texture*>      textureContainer;      ///< List of owned textures
 162   OwnerContainer<Render::FrameBuffer*>  frameBufferContainer;  ///< List of owned framebuffers
 163   OwnerContainer<Render::VertexBuffer*> vertexBufferContainer; ///< List of owned vertex buffers
 164   OwnerContainer<Render::Geometry*>     geometryContainer;     ///< List of owned Geometries
 165
 166   bool lastFrameWasRendered; ///< Keeps track of the last frame being rendered due to having render instructions
 167
 168   OwnerContainer<Render::RenderTracker*> mRenderTrackers; ///< List of render trackers
 169
 170   ProgramController   programController; ///< Owner of the GL programs
 171   Render::ShaderCache shaderCache;       ///< The cache for the graphics shaders
 172
 173   std::unique_ptr<Render::UniformBufferManager> uniformBufferManager; ///< The uniform buffer manager
 174
 175   Integration::DepthBufferAvailable   depthBufferAvailable;   ///< Whether the depth buffer is available
 176   Integration::StencilBufferAvailable stencilBufferAvailable; ///< Whether the stencil buffer is available
 177   Integration::PartialUpdateAvailable partialUpdateAvailable; ///< Whether the partial update is available
 178
 179   std::unique_ptr<Dali::ThreadPool> threadPool;            ///< The thread pool
 180   Vector<Graphics::Texture*>        boundTextures;         ///< The textures bound for rendering
 181   Vector<Graphics::Texture*>        textureDependencyList; ///< The dependency list of bound textures
 182 };
 183
 184 RenderManager* RenderManager::New(Graphics::Controller&               graphicsController,
 185                                   Integration::DepthBufferAvailable   depthBufferAvailable,
 186                                   Integration::StencilBufferAvailable stencilBufferAvailable,
 187                                   Integration::PartialUpdateAvailable partialUpdateAvailable)
 188 {
 189   RenderManager* manager = new RenderManager;
 190   manager->mImpl         = new Impl(graphicsController,
 191                             depthBufferAvailable,
 192                             stencilBufferAvailable,
 193                             partialUpdateAvailable);
 194   return manager;
 195 }
 196
 197 RenderManager::RenderManager()
 198 : mImpl(nullptr)
 199 {
 200 }
 201
 202 RenderManager::~RenderManager()
 203 {
 204   delete mImpl;
 205 }
 206
 207 RenderQueue& RenderManager::GetRenderQueue()
 208 {
 209   return mImpl->renderQueue;
 210 }
 211
 212 void RenderManager::ContextCreated()
 213 {
 214   mImpl->context.GlContextCreated();
 215   mImpl->programController.GlContextCreated();
 216
 217   // renderers, textures and gpu buffers cannot reinitialize themselves
 218   // so they rely on someone reloading the data for them
 219 }
 220
 221 void RenderManager::ContextDestroyed()
 222 {
 223   mImpl->context.GlContextDestroyed();
 224   mImpl->programController.GlContextDestroyed();
 225
 226   //Inform textures
 227   for(auto&& texture : mImpl->textureContainer)
 228   {
 229     texture->Destroy();
 230   }
 231
 232   //Inform framebuffers
 233   for(auto&& framebuffer : mImpl->frameBufferContainer)
 234   {
 235     framebuffer->Destroy();
 236   }
 237
 238   // inform renderers
 239   for(auto&& renderer : mImpl->rendererContainer)
 240   {
 241     renderer->GlContextDestroyed();
 242   }
 243
 244   // inform context
 245   for(auto&& context : mImpl->sceneContextContainer)
 246   {
 247     context->GlContextDestroyed();
 248   }
 249 }
 250
 251 void RenderManager::SetShaderSaver(ShaderSaver& upstream)
 252 {
 253   mImpl->programController.SetShaderSaver(upstream);
 254 }
 255
 256 void RenderManager::AddRenderer(OwnerPointer<Render::Renderer>& renderer)
 257 {
 258   // Initialize the renderer as we are now in render thread
 259   renderer->Initialize(mImpl->context, mImpl->graphicsController, mImpl->programController, mImpl->shaderCache, *(mImpl->uniformBufferManager.get()));
 260
 261   mImpl->rendererContainer.PushBack(renderer.Release());
 262 }
 263
 264 void RenderManager::RemoveRenderer(Render::Renderer* renderer)
 265 {
 266   mImpl->rendererContainer.EraseObject(renderer);
 267 }
 268
 269 void RenderManager::AddSampler(OwnerPointer<Render::Sampler>& sampler)
 270 {
 271   sampler->Initialize(mImpl->graphicsController);
 272   mImpl->samplerContainer.PushBack(sampler.Release());
 273 }
 274
 275 void RenderManager::RemoveSampler(Render::Sampler* sampler)
 276 {
 277   mImpl->samplerContainer.EraseObject(sampler);
 278 }
 279
 280 void RenderManager::AddTexture(OwnerPointer<Render::Texture>& texture)
 281 {
 282   texture->Initialize(mImpl->graphicsController);
 283   mImpl->textureContainer.PushBack(texture.Release());
 284 }
 285
 286 void RenderManager::RemoveTexture(Render::Texture* texture)
 287 {
 288   DALI_ASSERT_DEBUG(NULL != texture);
 289
 290   // Find the texture, use reference to pointer so we can do the erase safely
 291   for(auto&& iter : mImpl->textureContainer)
 292   {
 293     if(iter == texture)
 294     {
 295       texture->Destroy();
 296       mImpl->textureContainer.Erase(&iter); // Texture found; now destroy it
 297       return;
 298     }
 299   }
 300 }
 301
 302 void RenderManager::UploadTexture(Render::Texture* texture, PixelDataPtr pixelData, const Texture::UploadParams& params)
 303 {
 304   texture->Upload(pixelData, params);
 305 }
 306
 307 void RenderManager::GenerateMipmaps(Render::Texture* texture)
 308 {
 309   texture->GenerateMipmaps();
 310 }
 311
 312 void RenderManager::SetFilterMode(Render::Sampler* sampler, uint32_t minFilterMode, uint32_t magFilterMode)
 313 {
 314   sampler->SetFilterMode(static_cast<Dali::FilterMode::Type>(minFilterMode),
 315                          static_cast<Dali::FilterMode::Type>(magFilterMode));
 316 }
 317
 318 void RenderManager::SetWrapMode(Render::Sampler* sampler, uint32_t rWrapMode, uint32_t sWrapMode, uint32_t tWrapMode)
 319 {
 320   sampler->SetWrapMode(static_cast<Dali::WrapMode::Type>(rWrapMode),
 321                        static_cast<Dali::WrapMode::Type>(sWrapMode),
 322                        static_cast<Dali::WrapMode::Type>(tWrapMode));
 323 }
 324
 325 void RenderManager::AddFrameBuffer(OwnerPointer<Render::FrameBuffer>& frameBuffer)
 326 {
 327   Render::FrameBuffer* frameBufferPtr = frameBuffer.Release();
 328   mImpl->frameBufferContainer.PushBack(frameBufferPtr);
 329   frameBufferPtr->Initialize(mImpl->graphicsController);
 330 }
 331
 332 void RenderManager::RemoveFrameBuffer(Render::FrameBuffer* frameBuffer)
 333 {
 334   DALI_ASSERT_DEBUG(NULL != frameBuffer);
 335
 336   // Find the sampler, use reference so we can safely do the erase
 337   for(auto&& iter : mImpl->frameBufferContainer)
 338   {
 339     if(iter == frameBuffer)
 340     {
 341       frameBuffer->Destroy();
 342       mImpl->frameBufferContainer.Erase(&iter); // frameBuffer found; now destroy it
 343
 344       break;
 345     }
 346   }
 347 }
 348
 349 void RenderManager::InitializeScene(SceneGraph::Scene* scene)
 350 {
 351   scene->Initialize(*mImpl->CreateSceneContext(), mImpl->graphicsController);
 352   mImpl->sceneContainer.push_back(scene);
 353 }
 354
 355 void RenderManager::UninitializeScene(SceneGraph::Scene* scene)
 356 {
 357   mImpl->DestroySceneContext(scene->GetContext());
 358
 359   auto iter = std::find(mImpl->sceneContainer.begin(), mImpl->sceneContainer.end(), scene);
 360   if(iter != mImpl->sceneContainer.end())
 361   {
 362     mImpl->sceneContainer.erase(iter);
 363   }
 364 }
 365
 366 void RenderManager::SurfaceReplaced(SceneGraph::Scene* scene)
 367 {
 368   Context* newContext = mImpl->ReplaceSceneContext(scene->GetContext());
 369   scene->Initialize(*newContext, mImpl->graphicsController);
 370 }
 371
 372 void RenderManager::AttachColorTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel, uint32_t layer)
 373 {
 374   frameBuffer->AttachColorTexture(texture, mipmapLevel, layer);
 375 }
 376
 377 void RenderManager::AttachDepthTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 378 {
 379   frameBuffer->AttachDepthTexture(texture, mipmapLevel);
 380 }
 381
 382 void RenderManager::AttachDepthStencilTextureToFrameBuffer(Render::FrameBuffer* frameBuffer, Render::Texture* texture, uint32_t mipmapLevel)
 383 {
 384   frameBuffer->AttachDepthStencilTexture(texture, mipmapLevel);
 385 }
 386
 387 void RenderManager::AddVertexBuffer(OwnerPointer<Render::VertexBuffer>& vertexBuffer)
 388 {
 389   mImpl->vertexBufferContainer.PushBack(vertexBuffer.Release());
 390 }
 391
 392 void RenderManager::RemoveVertexBuffer(Render::VertexBuffer* vertexBuffer)
 393 {
 394   mImpl->vertexBufferContainer.EraseObject(vertexBuffer);
 395 }
 396
 397 void RenderManager::SetVertexBufferFormat(Render::VertexBuffer* vertexBuffer, OwnerPointer<Render::VertexBuffer::Format>& format)
 398 {
 399   vertexBuffer->SetFormat(format.Release());
 400 }
 401
 402 void RenderManager::SetVertexBufferData(Render::VertexBuffer* vertexBuffer, OwnerPointer<Vector<uint8_t>>& data, uint32_t size)
 403 {
 404   vertexBuffer->SetData(data.Release(), size);
 405 }
 406
 407 void RenderManager::SetIndexBuffer(Render::Geometry* geometry, Dali::Vector<uint16_t>& indices)
 408 {
 409   geometry->SetIndexBuffer(indices);
 410 }
 411
 412 void RenderManager::AddGeometry(OwnerPointer<Render::Geometry>& geometry)
 413 {
 414   mImpl->geometryContainer.PushBack(geometry.Release());
 415 }
 416
 417 void RenderManager::RemoveGeometry(Render::Geometry* geometry)
 418 {
 419   mImpl->geometryContainer.EraseObject(geometry);
 420 }
 421
 422 void RenderManager::AttachVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 423 {
 424   DALI_ASSERT_DEBUG(NULL != geometry);
 425
 426   // Find the geometry
 427   for(auto&& iter : mImpl->geometryContainer)
 428   {
 429     if(iter == geometry)
 430     {
 431       iter->AddVertexBuffer(vertexBuffer);
 432       break;
 433     }
 434   }
 435 }
 436
 437 void RenderManager::RemoveVertexBuffer(Render::Geometry* geometry, Render::VertexBuffer* vertexBuffer)
 438 {
 439   DALI_ASSERT_DEBUG(NULL != geometry);
 440
 441   // Find the geometry
 442   for(auto&& iter : mImpl->geometryContainer)
 443   {
 444     if(iter == geometry)
 445     {
 446       iter->RemoveVertexBuffer(vertexBuffer);
 447       break;
 448     }
 449   }
 450 }
 451
 452 void RenderManager::SetGeometryType(Render::Geometry* geometry, uint32_t geometryType)
 453 {
 454   geometry->SetType(Render::Geometry::Type(geometryType));
 455 }
 456
 457 void RenderManager::AddRenderTracker(Render::RenderTracker* renderTracker)
 458 {
 459   mImpl->AddRenderTracker(renderTracker);
 460 }
 461
 462 void RenderManager::RemoveRenderTracker(Render::RenderTracker* renderTracker)
 463 {
 464   mImpl->RemoveRenderTracker(renderTracker);
 465 }
 466
 467 ProgramCache* RenderManager::GetProgramCache()
 468 {
 469   return &(mImpl->programController);
 470 }
 471
 472 void RenderManager::PreRender(Integration::RenderStatus& status, bool forceClear, bool uploadOnly)
 473 {
 474   DALI_PRINT_RENDER_START(mImpl->renderBufferIndex);
 475
 476   // Core::Render documents that GL context must be current before calling Render
 477   DALI_ASSERT_DEBUG(mImpl->context.IsGlContextCreated());
 478
 479   // Increment the frame count at the beginning of each frame
 480   ++mImpl->frameCount;
 481
 482   // Process messages queued during previous update
 483   mImpl->renderQueue.ProcessMessages(mImpl->renderBufferIndex);
 484
 485   uint32_t count = 0u;
 486   for(uint32_t i = 0; i < mImpl->sceneContainer.size(); ++i)
 487   {
 488     count += mImpl->sceneContainer[i]->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 489   }
 490
 491   const bool haveInstructions = count > 0u;
 492
 493   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");
 494
 495   // Only render if we have instructions to render, or the last frame was rendered (and therefore a clear is required).
 496   if(haveInstructions || mImpl->lastFrameWasRendered || forceClear)
 497   {
 498     DALI_LOG_INFO(gLogFilter, Debug::General, "Render: Processing\n");
 499
 500     // Switch to the shared context
 501     if(mImpl->currentContext != &mImpl->context)
 502     {
 503       mImpl->currentContext = &mImpl->context;
 504
 505       // Clear the current cached program when the context is switched
 506       mImpl->programController.ClearCurrentProgram();
 507     }
 508
 509     // Upload the geometries
 510     for(uint32_t i = 0; i < mImpl->sceneContainer.size(); ++i)
 511     {
 512       RenderInstructionContainer& instructions = mImpl->sceneContainer[i]->GetRenderInstructions();
 513       for(uint32_t j = 0; j < instructions.Count(mImpl->renderBufferIndex); ++j)
 514       {
 515         RenderInstruction& instruction = instructions.At(mImpl->renderBufferIndex, j);
 516
 517         const Matrix* viewMatrix       = instruction.GetViewMatrix(mImpl->renderBufferIndex);
 518         const Matrix* projectionMatrix = instruction.GetProjectionMatrix(mImpl->renderBufferIndex);
 519
 520         DALI_ASSERT_DEBUG(viewMatrix);
 521         DALI_ASSERT_DEBUG(projectionMatrix);
 522
 523         if(viewMatrix && projectionMatrix)
 524         {
 525           const RenderListContainer::SizeType renderListCount = instruction.RenderListCount();
 526
 527           // Iterate through each render list.
 528           for(RenderListContainer::SizeType index = 0; index < renderListCount; ++index)
 529           {
 530             const RenderList* renderList = instruction.GetRenderList(index);
 531
 532             if(renderList && !renderList->IsEmpty())
 533             {
 534               const std::size_t itemCount = renderList->Count();
 535               for(uint32_t itemIndex = 0u; itemIndex < itemCount; ++itemIndex)
 536               {
 537                 const RenderItem& item = renderList->GetItem(itemIndex);
 538                 if(DALI_LIKELY(item.mRenderer))
 539                 {
 540                   item.mRenderer->Upload();
 541                 }
 542               }
 543             }
 544           }
 545         }
 546       }
 547     }
 548   }
 549 }
 550
 551 void RenderManager::PreRender(Integration::Scene& scene, std::vector<Rect<int>>& damagedRects)
 552 {
 553   if(mImpl->partialUpdateAvailable != Integration::PartialUpdateAvailable::TRUE)
 554   {
 555     return;
 556   }
 557
 558   Internal::Scene&   sceneInternal = GetImplementation(scene);
 559   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 560
 561   if(sceneObject->IsRenderingSkipped())
 562   {
 563     // We don't need to calculate dirty rects
 564     return;
 565   }
 566
 567   class DamagedRectsCleaner
 568   {
 569   public:
 570     DamagedRectsCleaner(std::vector<Rect<int>>& damagedRects)
 571     : mDamagedRects(damagedRects),
 572       mCleanOnReturn(true)
 573     {
 574     }
 575
 576     void SetCleanOnReturn(bool cleanOnReturn)
 577     {
 578       mCleanOnReturn = cleanOnReturn;
 579     }
 580
 581     ~DamagedRectsCleaner()
 582     {
 583       if(mCleanOnReturn)
 584       {
 585         mDamagedRects.clear();
 586       }
 587     }
 588
 589   private:
 590     std::vector<Rect<int>>& mDamagedRects;
 591     bool                    mCleanOnReturn;
 592   };
 593
 594   Rect<int32_t> surfaceRect = sceneObject->GetSurfaceRect();
 595
 596   // Clean collected dirty/damaged rects on exit if 3d layer or 3d node or other conditions.
 597   DamagedRectsCleaner damagedRectCleaner(damagedRects);
 598
 599   // Mark previous dirty rects in the sorted array. The array is already sorted by node and renderer, frame number.
 600   // so you don't need to sort: std::stable_sort(itemsDirtyRects.begin(), itemsDirtyRects.end());
 601   std::vector<DirtyRect>& itemsDirtyRects = sceneInternal.GetItemsDirtyRects();
 602   for(DirtyRect& dirtyRect : itemsDirtyRects)
 603   {
 604     dirtyRect.visited = false;
 605   }
 606
 607   uint32_t count = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 608   for(uint32_t i = 0; i < count; ++i)
 609   {
 610     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 611
 612     if(instruction.mFrameBuffer)
 613     {
 614       return; // TODO: reset, we don't deal with render tasks with framebuffers (for now)
 615     }
 616
 617     const Camera* camera = instruction.GetCamera();
 618     if(camera->mType == Camera::DEFAULT_TYPE && camera->mTargetPosition == Camera::DEFAULT_TARGET_POSITION)
 619     {
 620       const Node* node = instruction.GetCamera()->GetNode();
 621       if(node)
 622       {
 623         Vector3    position;
 624         Vector3    scale;
 625         Quaternion orientation;
 626         node->GetWorldMatrix(mImpl->renderBufferIndex).GetTransformComponents(position, orientation, scale);
 627
 628         Vector3 orientationAxis;
 629         Radian  orientationAngle;
 630         orientation.ToAxisAngle(orientationAxis, orientationAngle);
 631
 632         if(position.x > Math::MACHINE_EPSILON_10000 ||
 633            position.y > Math::MACHINE_EPSILON_10000 ||
 634            orientationAxis != Vector3(0.0f, 1.0f, 0.0f) ||
 635            orientationAngle != ANGLE_180 ||
 636            scale != Vector3(1.0f, 1.0f, 1.0f))
 637         {
 638           return;
 639         }
 640       }
 641     }
 642     else
 643     {
 644       return;
 645     }
 646
 647     Rect<int32_t> viewportRect;
 648     if(instruction.mIsViewportSet)
 649     {
 650       const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 651       viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 652       if(viewportRect.IsEmpty() || !viewportRect.IsValid())
 653       {
 654         return; // just skip funny use cases for now, empty viewport means it is set somewhere else
 655       }
 656     }
 657     else
 658     {
 659       viewportRect = surfaceRect;
 660     }
 661
 662     const Matrix* viewMatrix       = instruction.GetViewMatrix(mImpl->renderBufferIndex);
 663     const Matrix* projectionMatrix = instruction.GetProjectionMatrix(mImpl->renderBufferIndex);
 664     if(viewMatrix && projectionMatrix)
 665     {
 666       const RenderListContainer::SizeType count = instruction.RenderListCount();
 667       for(RenderListContainer::SizeType index = 0u; index < count; ++index)
 668       {
 669         const RenderList* renderList = instruction.GetRenderList(index);
 670         if(renderList && !renderList->IsEmpty())
 671         {
 672           const std::size_t count = renderList->Count();
 673           for(uint32_t index = 0u; index < count; ++index)
 674           {
 675             RenderItem& item = renderList->GetItem(index);
 676             // If the item does 3D transformation, do early exit and clean the damaged rect array
 677             if(item.mUpdateSize == Vector3::ZERO)
 678             {
 679               return;
 680             }
 681
 682             Rect<int> rect;
 683             DirtyRect dirtyRect(item.mNode, item.mRenderer, mImpl->frameCount, rect);
 684             // If the item refers to updated node or renderer.
 685             if(item.mIsUpdated ||
 686                (item.mNode &&
 687                 (item.mNode->Updated() || (item.mRenderer && item.mRenderer->Updated(mImpl->renderBufferIndex, item.mNode)))))
 688             {
 689               item.mIsUpdated = false;
 690               item.mNode->SetUpdated(false);
 691
 692               rect = item.CalculateViewportSpaceAABB(item.mUpdateSize, viewportRect.width, viewportRect.height);
 693               if(rect.IsValid() && rect.Intersect(viewportRect) && !rect.IsEmpty())
 694               {
 695                 const int left   = rect.x;
 696                 const int top    = rect.y;
 697                 const int right  = rect.x + rect.width;
 698                 const int bottom = rect.y + rect.height;
 699                 rect.x           = (left / 16) * 16;
 700                 rect.y           = (top / 16) * 16;
 701                 rect.width       = ((right + 16) / 16) * 16 - rect.x;
 702                 rect.height      = ((bottom + 16) / 16) * 16 - rect.y;
 703
 704                 // Found valid dirty rect.
 705                 // 1. Insert it in the sorted array of the dirty rects.
 706                 // 2. Mark the related dirty rects as visited so they will not be removed below.
 707                 // 3. Keep only last 3 dirty rects for the same node and renderer (Tizen uses 3 back buffers, Ubuntu 1).
 708                 dirtyRect.rect    = rect;
 709                 auto dirtyRectPos = std::lower_bound(itemsDirtyRects.begin(), itemsDirtyRects.end(), dirtyRect);
 710                 dirtyRectPos      = itemsDirtyRects.insert(dirtyRectPos, dirtyRect);
 711
 712                 int c = 1;
 713                 while(++dirtyRectPos != itemsDirtyRects.end())
 714                 {
 715                   if(dirtyRectPos->node != item.mNode || dirtyRectPos->renderer != item.mRenderer)
 716                   {
 717                     break;
 718                   }
 719
 720                   dirtyRectPos->visited = true;
 721                   Rect<int>& dirtRect   = dirtyRectPos->rect;
 722                   rect.Merge(dirtRect);
 723
 724                   c++;
 725                   if(c > 3) // no more then 3 previous rects
 726                   {
 727                     itemsDirtyRects.erase(dirtyRectPos);
 728                     break;
 729                   }
 730                 }
 731
 732                 damagedRects.push_back(rect);
 733               }
 734             }
 735             else
 736             {
 737               // 1. The item is not dirty, the node and renderer referenced by the item are still exist.
 738               // 2. Mark the related dirty rects as visited so they will not be removed below.
 739               auto dirtyRectPos = std::lower_bound(itemsDirtyRects.begin(), itemsDirtyRects.end(), dirtyRect);
 740               while(dirtyRectPos != itemsDirtyRects.end())
 741               {
 742                 if(dirtyRectPos->node != item.mNode || dirtyRectPos->renderer != item.mRenderer)
 743                 {
 744                   break;
 745                 }
 746
 747                 dirtyRectPos->visited = true;
 748                 dirtyRectPos++;
 749               }
 750             }
 751           }
 752         }
 753       }
 754     }
 755   }
 756
 757   // Check removed nodes or removed renderers dirty rects
 758   auto i = itemsDirtyRects.begin();
 759   auto j = itemsDirtyRects.begin();
 760   while(i != itemsDirtyRects.end())
 761   {
 762     if(i->visited)
 763     {
 764       *j++ = *i;
 765     }
 766     else
 767     {
 768       Rect<int>& dirtRect = i->rect;
 769       damagedRects.push_back(dirtRect);
 770     }
 771     i++;
 772   }
 773
 774   itemsDirtyRects.resize(j - itemsDirtyRects.begin());
 775   damagedRectCleaner.SetCleanOnReturn(false);
 776 }
 777
 778 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo)
 779 {
 780   Rect<int> clippingRect;
 781   RenderScene(status, scene, renderToFbo, clippingRect);
 782 }
 783
 784 void RenderManager::RenderScene(Integration::RenderStatus& status, Integration::Scene& scene, bool renderToFbo, Rect<int>& clippingRect)
 785 {
 786   // Reset main algorithms command buffer
 787   mImpl->renderAlgorithms.ResetCommandBuffer();
 788
 789   auto mainCommandBuffer = mImpl->renderAlgorithms.GetMainCommandBuffer();
 790
 791   Internal::Scene&   sceneInternal = GetImplementation(scene);
 792   SceneGraph::Scene* sceneObject   = sceneInternal.GetSceneObject();
 793
 794   uint32_t count = sceneObject->GetRenderInstructions().Count(mImpl->renderBufferIndex);
 795
 796   std::vector<Graphics::RenderTarget*> targetstoPresent;
 797
 798   for(uint32_t i = 0; i < count; ++i)
 799   {
 800     RenderInstruction& instruction = sceneObject->GetRenderInstructions().At(mImpl->renderBufferIndex, i);
 801
 802     if((renderToFbo && !instruction.mFrameBuffer) || (!renderToFbo && instruction.mFrameBuffer))
 803     {
 804       continue; // skip
 805     }
 806
 807     // Mark that we will require a post-render step to be performed (includes swap-buffers).
 808     status.SetNeedsPostRender(true);
 809
 810     Rect<int32_t> viewportRect;
 811     Vector4       clearColor;
 812
 813     if(instruction.mIsClearColorSet)
 814     {
 815       clearColor = instruction.mClearColor;
 816     }
 817     else
 818     {
 819       clearColor = Dali::RenderTask::DEFAULT_CLEAR_COLOR;
 820     }
 821
 822     Rect<int32_t> surfaceRect        = sceneObject->GetSurfaceRect();
 823     int32_t       surfaceOrientation = sceneObject->GetSurfaceOrientation();
 824
 825     Integration::DepthBufferAvailable   depthBufferAvailable   = mImpl->depthBufferAvailable;
 826     Integration::StencilBufferAvailable stencilBufferAvailable = mImpl->stencilBufferAvailable;
 827
 828     Graphics::RenderTarget* currentRenderTarget = nullptr;
 829     Graphics::RenderPass* currentRenderPass = nullptr;
 830     std::vector<Graphics::ClearValue> currentClearValues {};
 831
 832     if(instruction.mFrameBuffer)
 833     {
 834       // Ensure graphics framebuffer is created, bind atachments and create render passes
 835       // Only happens once per framebuffer. If the create fails, e.g. no attachments yet,
 836       // then don't render to this framebuffer.
 837       if(!instruction.mFrameBuffer->GetGraphicsObject())
 838       {
 839         const bool created = instruction.mFrameBuffer->CreateGraphicsObjects();
 840         if(!created)
 841         {
 842           continue;
 843         }
 844       }
 845
 846       auto& clearValues = instruction.mFrameBuffer->GetGraphicsRenderPassClearValues();
 847
 848       // Set the clear color for first color attachment
 849       if(instruction.mIsClearColorSet && clearValues.size() > 0)
 850       {
 851         clearValues[0].color = {
 852           instruction.mClearColor.r,
 853           instruction.mClearColor.g,
 854           instruction.mClearColor.b,
 855           instruction.mClearColor.a};
 856       }
 857
 858       currentClearValues = clearValues;
 859
 860       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 861
 862       // offscreen buffer
 863       currentRenderTarget = instruction.mFrameBuffer->GetGraphicsRenderTarget();
 864       currentRenderPass = instruction.mFrameBuffer->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 865
 866       if(mImpl->currentContext != &mImpl->context)
 867       {
 868         // Switch to shared context for off-screen buffer
 869         mImpl->currentContext = &mImpl->context;
 870
 871         // Clear the current cached program when the context is switched
 872         mImpl->programController.ClearCurrentProgram();
 873       }
 874     }
 875     else
 876     {
 877       if(mImpl->currentContext->IsSurfacelessContextSupported())
 878       {
 879         if(mImpl->currentContext != sceneObject->GetContext())
 880         {
 881           // Switch the correct context if rendering to a surface
 882           mImpl->currentContext = sceneObject->GetContext();
 883
 884           // Clear the current cached program when the context is switched
 885           mImpl->programController.ClearCurrentProgram();
 886         }
 887       }
 888
 889       // surface
 890       auto& clearValues = sceneObject->GetGraphicsRenderPassClearValues();
 891
 892       if(instruction.mIsClearColorSet)
 893       {
 894         clearValues[0].color = {
 895           instruction.mClearColor.r,
 896           instruction.mClearColor.g,
 897           instruction.mClearColor.b,
 898           instruction.mClearColor.a};
 899       }
 900
 901       currentClearValues = clearValues;
 902
 903       auto loadOp = instruction.mIsClearColorSet ? Graphics::AttachmentLoadOp::CLEAR : Graphics::AttachmentLoadOp::LOAD;
 904
 905       currentRenderTarget = sceneObject->GetSurfaceRenderTarget();
 906       currentRenderPass = sceneObject->GetGraphicsRenderPass(loadOp, Graphics::AttachmentStoreOp::STORE);
 907     }
 908
 909     targetstoPresent.emplace_back( currentRenderTarget );
 910
 911     // Make sure that GL context must be created
 912     mImpl->currentContext->GlContextCreated();
 913
 914     // reset the program matrices for all programs once per frame
 915     // this ensures we will set view and projection matrix once per program per camera
 916     mImpl->programController.ResetProgramMatrices();
 917
 918     if(instruction.mFrameBuffer)
 919     {
 920       // For each offscreen buffer, update the dependency list with the new texture id used by this frame buffer.
 921       for(unsigned int i0 = 0, i1 = instruction.mFrameBuffer->GetColorAttachmentCount(); i0 < i1; ++i0)
 922       {
 923         mImpl->textureDependencyList.PushBack(instruction.mFrameBuffer->GetTexture(i0));
 924       }
 925     }
 926
 927     if(!instruction.mIgnoreRenderToFbo && (instruction.mFrameBuffer != nullptr))
 928     {
 929       // Offscreen buffer rendering
 930       if(instruction.mIsViewportSet)
 931       {
 932         // For glViewport the lower-left corner is (0,0)
 933         const int32_t y = (instruction.mFrameBuffer->GetHeight() - instruction.mViewport.height) - instruction.mViewport.y;
 934         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 935       }
 936       else
 937       {
 938         viewportRect.Set(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
 939       }
 940       surfaceOrientation = 0;
 941     }
 942     else // No Offscreen frame buffer rendering
 943     {
 944       // Check whether a viewport is specified, otherwise the full surface size is used
 945       if(instruction.mIsViewportSet)
 946       {
 947         // For glViewport the lower-left corner is (0,0)
 948         const int32_t y = (surfaceRect.height - instruction.mViewport.height) - instruction.mViewport.y;
 949         viewportRect.Set(instruction.mViewport.x, y, instruction.mViewport.width, instruction.mViewport.height);
 950       }
 951       else
 952       {
 953         viewportRect = surfaceRect;
 954       }
 955     }
 956
 957     // Set surface orientation
 958     mImpl->currentContext->SetSurfaceOrientation(surfaceOrientation);
 959
 960     /*** Clear region of framebuffer or surface before drawing ***/
 961
 962     bool clearFullFrameRect = true;
 963     if(instruction.mFrameBuffer != nullptr)
 964     {
 965       Viewport frameRect(0, 0, instruction.mFrameBuffer->GetWidth(), instruction.mFrameBuffer->GetHeight());
 966       clearFullFrameRect = (frameRect == viewportRect);
 967     }
 968     else
 969     {
 970       clearFullFrameRect = (surfaceRect == viewportRect);
 971     }
 972
 973     if(!clippingRect.IsEmpty())
 974     {
 975       if(!clippingRect.Intersect(viewportRect))
 976       {
 977         DALI_LOG_ERROR("Invalid clipping rect %d %d %d %d\n", clippingRect.x, clippingRect.y, clippingRect.width, clippingRect.height);
 978         clippingRect = Rect<int>();
 979       }
 980       clearFullFrameRect = false;
 981     }
 982
 983     Graphics::Rect2D scissorArea{ viewportRect.x, viewportRect.y, uint32_t(viewportRect.width), uint32_t(viewportRect.height) };
 984     if(instruction.mIsClearColorSet)
 985     {
 986       if(!clearFullFrameRect)
 987       {
 988         if(!clippingRect.IsEmpty())
 989         {
 990           scissorArea = {clippingRect.x, clippingRect.y, uint32_t(clippingRect.width), uint32_t(clippingRect.height)};
 991         }
 992       }
 993     }
 994
 995     // Begin render pass
 996     mainCommandBuffer->BeginRenderPass(
 997       currentRenderPass,
 998       currentRenderTarget,
 999       scissorArea,
1000       currentClearValues);
1001
1002     mainCommandBuffer->SetViewport({float(viewportRect.x),
1003                                      float(viewportRect.y),
1004                                      float(viewportRect.width),
1005                                      float(viewportRect.height)});
1006
1007     // Clear the list of bound textures
1008     mImpl->boundTextures.Clear();
1009
1010     mImpl->renderAlgorithms.ProcessRenderInstruction(
1011       instruction,
1012       *mImpl->currentContext,
1013       mImpl->renderBufferIndex,
1014       depthBufferAvailable,
1015       stencilBufferAvailable,
1016       mImpl->boundTextures,
1017       viewportRect,
1018       clippingRect,
1019       surfaceOrientation);
1020
1021     // Synchronise the FBO/Texture access when there are multiple contexts
1022     if(mImpl->currentContext->IsSurfacelessContextSupported())
1023     {
1024       // Check whether any bound texture is in the dependency list
1025       bool textureFound = false;
1026
1027       if(mImpl->boundTextures.Count() > 0u && mImpl->textureDependencyList.Count() > 0u)
1028       {
1029         for(auto texture : mImpl->textureDependencyList)
1030         {
1031           textureFound = std::find_if(mImpl->boundTextures.Begin(), mImpl->boundTextures.End(), [texture](Graphics::Texture* graphicsTexture) {
1032                            return texture == graphicsTexture;
1033                          }) != mImpl->boundTextures.End();
1034         }
1035       }
1036
1037       if(textureFound)
1038       {
1039         if(instruction.mFrameBuffer)
1040         {
1041           // For off-screen buffer
1042
1043           // Clear the dependency list
1044           mImpl->textureDependencyList.Clear();
1045         }
1046         else
1047         {
1048           // Worker thread lambda function
1049           auto& glContextHelperAbstraction = mImpl->graphicsController.GetGlContextHelperAbstraction();
1050           auto  workerFunction             = [&glContextHelperAbstraction](int workerThread) {
1051             // Switch to the shared context in the worker thread
1052             glContextHelperAbstraction.MakeSurfacelessContextCurrent();
1053
1054             // Wait until all rendering calls for the shared context are executed
1055             glContextHelperAbstraction.WaitClient();
1056
1057             // Must clear the context in the worker thread
1058             // Otherwise the shared context cannot be switched to from the render thread
1059             glContextHelperAbstraction.MakeContextNull();
1060           };
1061
1062           auto future = mImpl->threadPool->SubmitTask(0u, workerFunction);
1063           if(future)
1064           {
1065             mImpl->threadPool->Wait();
1066
1067             // Clear the dependency list
1068             mImpl->textureDependencyList.Clear();
1069           }
1070         }
1071       }
1072     }
1073
1074     if(instruction.mRenderTracker && instruction.mFrameBuffer)
1075     {
1076       // This will create a sync object every frame this render tracker
1077       // is alive (though it should be now be created only for
1078       // render-once render tasks)
1079       instruction.mRenderTracker->CreateSyncObject(mImpl->graphicsController.GetGlSyncAbstraction());
1080       instruction.mRenderTracker = nullptr; // Only create once.
1081     }
1082
1083     // End render pass
1084     mainCommandBuffer->EndRenderPass();
1085   }
1086   mImpl->renderAlgorithms.SubmitCommandBuffer();
1087
1088   std::sort( targetstoPresent.begin(), targetstoPresent.end() );
1089
1090   Graphics::RenderTarget* rt = nullptr;
1091   for( auto& target : targetstoPresent )
1092   {
1093     if(target != rt)
1094     {
1095       mImpl->graphicsController.PresentRenderTarget(target);
1096       rt = target;
1097     }
1098   }
1099 }
1100
1101 void RenderManager::PostRender(bool uploadOnly)
1102 {
1103   // Notify RenderGeometries that rendering has finished
1104   for(auto&& iter : mImpl->geometryContainer)
1105   {
1106     iter->OnRenderFinished();
1107   }
1108
1109   mImpl->UpdateTrackers();
1110
1111   uint32_t count = 0u;
1112   for(uint32_t i = 0; i < mImpl->sceneContainer.size(); ++i)
1113   {
1114     count += mImpl->sceneContainer[i]->GetRenderInstructions().Count(mImpl->renderBufferIndex);
1115   }
1116
1117   const bool haveInstructions = count > 0u;
1118
1119   // If this frame was rendered due to instructions existing, we mark this so we know to clear the next frame.
1120   mImpl->lastFrameWasRendered = haveInstructions;
1121
1122   /**
1123    * The rendering has finished; swap to the next buffer.
1124    * Ideally the update has just finished using this buffer; otherwise the render thread
1125    * should block until the update has finished.
1126    */
1127   mImpl->renderBufferIndex = (0 != mImpl->renderBufferIndex) ? 0 : 1;
1128
1129   DALI_PRINT_RENDER_END();
1130 }
1131
1132 } // namespace SceneGraph
1133
1134 } // namespace Internal
1135
1136 } // namespace Dali