dali/internal/graphics/gles-impl/egl-graphics-controller.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 // CLASS HEADER
  18 #include <dali/internal/graphics/gles-impl/egl-graphics-controller.h>
  19
  20 // INTERNAL INCLUDES
  21 #include <dali/integration-api/adaptor-framework/render-surface-interface.h>
  22 #include <dali/integration-api/debug.h>
  23 #include <dali/integration-api/gl-abstraction.h>
  24 #include <dali/integration-api/gl-defines.h>
  25 #include <dali/integration-api/graphics-sync-abstraction.h>
  26 #include <dali/internal/graphics/gles-impl/egl-sync-object.h>
  27 #include <dali/internal/graphics/gles-impl/gles-graphics-command-buffer.h>
  28 #include <dali/internal/graphics/gles-impl/gles-graphics-pipeline.h>
  29 #include <dali/internal/graphics/gles-impl/gles-graphics-program.h>
  30 #include <dali/internal/graphics/gles-impl/gles-graphics-render-pass.h>
  31 #include <dali/internal/graphics/gles-impl/gles-graphics-render-target.h>
  32 #include <dali/internal/graphics/gles-impl/gles-graphics-shader.h>
  33 #include <dali/internal/graphics/gles-impl/gles-graphics-texture.h>
  34 #include <dali/internal/graphics/gles-impl/gles-graphics-types.h>
  35 #include <dali/internal/graphics/gles-impl/gles-sync-object.h>
  36 #include <dali/internal/graphics/gles-impl/gles3-graphics-memory.h>
  37 #include <dali/internal/graphics/gles/egl-sync-implementation.h>
  38 #include <dali/public-api/common/dali-common.h>
  39
  40 // Uncomment the following define to turn on frame dumping
  41 //#define ENABLE_COMMAND_BUFFER_FRAME_DUMP 1
  42 #include <dali/internal/graphics/gles-impl/egl-graphics-controller-debug.h>
  43 DUMP_FRAME_INIT();
  44
  45 namespace Dali::Graphics
  46 {
  47 namespace
  48 {
  49 /**
  50  * @brief Custom deleter for all Graphics objects created
  51  * with use of the Controller.
  52  *
  53  * When Graphics object dies the unique pointer (Graphics::UniquePtr)
  54  * doesn't destroy it directly but passes the ownership back
  55  * to the Controller. The GLESDeleter is responsible for passing
  56  * the object to the discard queue (by calling Resource::DiscardResource()).
  57  */
  58 template<typename T>
  59 struct GLESDeleter
  60 {
  61   GLESDeleter() = default;
  62
  63   void operator()(T* object)
  64   {
  65     // Discard resource (add it to discard queue)
  66     object->DiscardResource();
  67   }
  68 };
  69
  70 /**
  71  * @brief Helper function allocating graphics object
  72  *
  73  * @param[in] info Create info structure
  74  * @param[in] controller Controller object
  75  * @param[out] out Unique pointer to the return object
  76  */
  77 template<class GLESType, class GfxCreateInfo, class T>
  78 auto NewObject(const GfxCreateInfo& info, EglGraphicsController& controller, T&& oldObject)
  79 {
  80   // Use allocator
  81   using Type = typename T::element_type;
  82   using UPtr = Graphics::UniquePtr<Type>;
  83   if(info.allocationCallbacks)
  84   {
  85     auto* memory = info.allocationCallbacks->allocCallback(
  86       sizeof(GLESType),
  87       0,
  88       info.allocationCallbacks->userData);
  89     return UPtr(new(memory) GLESType(info, controller), GLESDeleter<GLESType>());
  90   }
  91   else // Use standard allocator
  92   {
  93     return UPtr(new GLESType(info, controller), GLESDeleter<GLESType>());
  94   }
  95 }
  96
  97 template<class T0, class T1>
  98 T0* CastObject(T1* apiObject)
  99 {
 100   return static_cast<T0*>(apiObject);
 101 }
 102
 103 // Maximum size of texture upload buffer.
 104 const uint32_t TEXTURE_UPLOAD_MAX_BUFER_SIZE_MB = 1;
 105
 106 } // namespace
 107
 108 EglGraphicsController::~EglGraphicsController() = default;
 109
 110 void EglGraphicsController::InitializeGLES(Integration::GlAbstraction& glAbstraction)
 111 {
 112   DALI_LOG_RELEASE_INFO("Initializing New Graphics Controller #1\n");
 113   mGlAbstraction  = &glAbstraction;
 114   mContext        = std::make_unique<GLES::Context>(*this);
 115   mCurrentContext = mContext.get();
 116 }
 117
 118 void EglGraphicsController::Initialize(Integration::GraphicsSyncAbstraction&    syncImplementation,
 119                                        Integration::GlContextHelperAbstraction& glContextHelperAbstraction,
 120                                        Internal::Adaptor::GraphicsInterface&    graphicsInterface)
 121 {
 122   DALI_LOG_RELEASE_INFO("Initializing New Graphics Controller #2\n");
 123   auto* syncImplPtr = static_cast<Internal::Adaptor::EglSyncImplementation*>(&syncImplementation);
 124
 125   mEglSyncImplementation      = syncImplPtr;
 126   mGlContextHelperAbstraction = &glContextHelperAbstraction;
 127   mGraphics                   = &graphicsInterface;
 128 }
 129
 130 void EglGraphicsController::SubmitCommandBuffers(const SubmitInfo& submitInfo)
 131 {
 132   for(auto& cmdbuf : submitInfo.cmdBuffer)
 133   {
 134     // Push command buffers
 135     mCommandQueue.push(static_cast<GLES::CommandBuffer*>(cmdbuf));
 136   }
 137
 138   // If flush bit set, flush all pending tasks
 139   if(submitInfo.flags & (0 | SubmitFlagBits::FLUSH))
 140   {
 141     Flush();
 142   }
 143 }
 144
 145 void EglGraphicsController::PresentRenderTarget(RenderTarget* renderTarget)
 146 {
 147   // Use command buffer to execute presentation (we should pool it)
 148   CommandBufferCreateInfo info;
 149   info.SetLevel(CommandBufferLevel::PRIMARY);
 150   info.fixedCapacity        = 1; // only one command
 151   auto presentCommandBuffer = new GLES::CommandBuffer(info, *this);
 152   presentCommandBuffer->PresentRenderTarget(static_cast<GLES::RenderTarget*>(renderTarget));
 153   SubmitInfo submitInfo;
 154   submitInfo.cmdBuffer = {presentCommandBuffer};
 155   submitInfo.flags     = 0 | SubmitFlagBits::FLUSH;
 156   SubmitCommandBuffers(submitInfo);
 157 }
 158
 159 void EglGraphicsController::ResolvePresentRenderTarget(GLES::RenderTarget* renderTarget)
 160 {
 161   auto* rt = static_cast<GLES::RenderTarget*>(renderTarget);
 162   if(rt->GetCreateInfo().surface)
 163   {
 164     auto* surfaceInterface = reinterpret_cast<Dali::RenderSurfaceInterface*>(rt->GetCreateInfo().surface);
 165     surfaceInterface->MakeContextCurrent();
 166     surfaceInterface->PostRender();
 167   }
 168 }
 169
 170 Integration::GlAbstraction& EglGraphicsController::GetGlAbstraction()
 171 {
 172   DALI_ASSERT_DEBUG(mGlAbstraction && "Graphics controller not initialized");
 173   return *mGlAbstraction;
 174 }
 175
 176 Integration::GlContextHelperAbstraction& EglGraphicsController::GetGlContextHelperAbstraction()
 177 {
 178   DALI_ASSERT_DEBUG(mGlContextHelperAbstraction && "Graphics controller not initialized");
 179   return *mGlContextHelperAbstraction;
 180 }
 181
 182 Internal::Adaptor::EglSyncImplementation& EglGraphicsController::GetEglSyncImplementation()
 183 {
 184   DALI_ASSERT_DEBUG(mEglSyncImplementation && "Sync implementation not initialized");
 185   return *mEglSyncImplementation;
 186 }
 187
 188 Graphics::UniquePtr<CommandBuffer> EglGraphicsController::CreateCommandBuffer(
 189   const CommandBufferCreateInfo&       commandBufferCreateInfo,
 190   Graphics::UniquePtr<CommandBuffer>&& oldCommandBuffer)
 191 {
 192   return NewObject<GLES::CommandBuffer>(commandBufferCreateInfo, *this, std::move(oldCommandBuffer));
 193 }
 194
 195 Graphics::UniquePtr<RenderPass> EglGraphicsController::CreateRenderPass(const RenderPassCreateInfo& renderPassCreateInfo, Graphics::UniquePtr<RenderPass>&& oldRenderPass)
 196 {
 197   return NewObject<GLES::RenderPass>(renderPassCreateInfo, *this, std::move(oldRenderPass));
 198 }
 199
 200 Graphics::UniquePtr<Texture>
 201 EglGraphicsController::CreateTexture(const TextureCreateInfo& textureCreateInfo, Graphics::UniquePtr<Texture>&& oldTexture)
 202 {
 203   return NewObject<GLES::Texture>(textureCreateInfo, *this, std::move(oldTexture));
 204 }
 205
 206 Graphics::UniquePtr<Buffer> EglGraphicsController::CreateBuffer(
 207   const BufferCreateInfo& bufferCreateInfo, Graphics::UniquePtr<Buffer>&& oldBuffer)
 208 {
 209   return NewObject<GLES::Buffer>(bufferCreateInfo, *this, std::move(oldBuffer));
 210 }
 211
 212 Graphics::UniquePtr<Framebuffer> EglGraphicsController::CreateFramebuffer(
 213   const FramebufferCreateInfo& framebufferCreateInfo, Graphics::UniquePtr<Framebuffer>&& oldFramebuffer)
 214 {
 215   return NewObject<GLES::Framebuffer>(framebufferCreateInfo, *this, std::move(oldFramebuffer));
 216 }
 217
 218 Graphics::UniquePtr<Pipeline> EglGraphicsController::CreatePipeline(
 219   const PipelineCreateInfo& pipelineCreateInfo, Graphics::UniquePtr<Graphics::Pipeline>&& oldPipeline)
 220 {
 221   // Create pipeline cache if needed
 222   if(!mPipelineCache)
 223   {
 224     mPipelineCache = std::make_unique<GLES::PipelineCache>(*this);
 225   }
 226
 227   return mPipelineCache->GetPipeline(pipelineCreateInfo, std::move(oldPipeline));
 228 }
 229
 230 Graphics::UniquePtr<Program> EglGraphicsController::CreateProgram(
 231   const ProgramCreateInfo& programCreateInfo, UniquePtr<Program>&& oldProgram)
 232 {
 233   // Create program cache if needed
 234   if(!mPipelineCache)
 235   {
 236     mPipelineCache = std::make_unique<GLES::PipelineCache>(*this);
 237   }
 238
 239   return mPipelineCache->GetProgram(programCreateInfo, std::move(oldProgram));
 240 }
 241
 242 Graphics::UniquePtr<Shader> EglGraphicsController::CreateShader(const ShaderCreateInfo& shaderCreateInfo, Graphics::UniquePtr<Shader>&& oldShader)
 243 {
 244   return NewObject<GLES::Shader>(shaderCreateInfo, *this, std::move(oldShader));
 245 }
 246
 247 Graphics::UniquePtr<Sampler> EglGraphicsController::CreateSampler(const SamplerCreateInfo& samplerCreateInfo, Graphics::UniquePtr<Sampler>&& oldSampler)
 248 {
 249   return NewObject<GLES::Sampler>(samplerCreateInfo, *this, std::move(oldSampler));
 250 }
 251
 252 Graphics::UniquePtr<RenderTarget> EglGraphicsController::CreateRenderTarget(const RenderTargetCreateInfo& renderTargetCreateInfo, Graphics::UniquePtr<RenderTarget>&& oldRenderTarget)
 253 {
 254   return NewObject<GLES::RenderTarget>(renderTargetCreateInfo, *this, std::move(oldRenderTarget));
 255 }
 256
 257 Graphics::UniquePtr<SyncObject> EglGraphicsController::CreateSyncObject(const SyncObjectCreateInfo& syncObjectCreateInfo,
 258                                                                         UniquePtr<SyncObject>&&     oldSyncObject)
 259 {
 260   if(GetGLESVersion() < GLES::GLESVersion::GLES_30)
 261   {
 262     return NewObject<EGL::SyncObject>(syncObjectCreateInfo, *this, std::move(oldSyncObject));
 263   }
 264   else
 265   {
 266     return NewObject<GLES::SyncObject>(syncObjectCreateInfo, *this, std::move(oldSyncObject));
 267   }
 268 }
 269
 270 const Graphics::Reflection& EglGraphicsController::GetProgramReflection(const Graphics::Program& program)
 271 {
 272   return static_cast<const Graphics::GLES::Program*>(&program)->GetReflection();
 273 }
 274
 275 void EglGraphicsController::CreateSurfaceContext(Dali::RenderSurfaceInterface* surface)
 276 {
 277   std::unique_ptr<GLES::Context> context = std::make_unique<GLES::Context>(*this);
 278   mSurfaceContexts.push_back(std::move(std::make_pair(surface, std::move(context))));
 279 }
 280
 281 void EglGraphicsController::DeleteSurfaceContext(Dali::RenderSurfaceInterface* surface)
 282 {
 283   mSurfaceContexts.erase(std::remove_if(
 284                            mSurfaceContexts.begin(), mSurfaceContexts.end(), [surface](SurfaceContextPair& iter) { return surface == iter.first; }),
 285                          mSurfaceContexts.end());
 286 }
 287
 288 void EglGraphicsController::ActivateResourceContext()
 289 {
 290   mCurrentContext = mContext.get();
 291   mCurrentContext->GlContextCreated();
 292 }
 293
 294 void EglGraphicsController::ActivateSurfaceContext(Dali::RenderSurfaceInterface* surface)
 295 {
 296   if(surface && mGraphics->IsResourceContextSupported())
 297   {
 298     auto iter = std::find_if(mSurfaceContexts.begin(), mSurfaceContexts.end(), [surface](SurfaceContextPair& iter) {
 299       return (iter.first == surface);
 300     });
 301
 302     if(iter != mSurfaceContexts.end())
 303     {
 304       mCurrentContext = iter->second.get();
 305       mCurrentContext->GlContextCreated();
 306     }
 307   }
 308 }
 309
 310 void EglGraphicsController::AddTexture(GLES::Texture& texture)
 311 {
 312   // Assuming we are on the correct context
 313   mCreateTextureQueue.push(&texture);
 314 }
 315
 316 void EglGraphicsController::AddBuffer(GLES::Buffer& buffer)
 317 {
 318   // Assuming we are on the correct context
 319   mCreateBufferQueue.push(&buffer);
 320 }
 321
 322 void EglGraphicsController::AddFramebuffer(GLES::Framebuffer& framebuffer)
 323 {
 324   // Assuming we are on the correct context
 325   mCreateFramebufferQueue.push(&framebuffer);
 326 }
 327
 328 void EglGraphicsController::ProcessDiscardQueues()
 329 {
 330   // Process textures
 331   ProcessDiscardQueue<GLES::Texture>(mDiscardTextureQueue);
 332
 333   // Process buffers
 334   ProcessDiscardQueue<GLES::Buffer>(mDiscardBufferQueue);
 335
 336   // Process Framebuffers
 337   ProcessDiscardQueue<GLES::Framebuffer>(mDiscardFramebufferQueue);
 338
 339   // Process pipelines
 340   ProcessDiscardQueue(mDiscardPipelineQueue);
 341
 342   // Process programs
 343   ProcessDiscardQueue<GLES::Program>(mDiscardProgramQueue);
 344
 345   // Process shaders
 346   ProcessDiscardQueue<GLES::Shader>(mDiscardShaderQueue);
 347
 348   // Process samplers
 349   ProcessDiscardQueue<GLES::Sampler>(mDiscardSamplerQueue);
 350
 351   // Process command buffers
 352   ProcessDiscardQueue<GLES::CommandBuffer>(mDiscardCommandBufferQueue);
 353 }
 354
 355 void EglGraphicsController::ProcessCreateQueues()
 356 {
 357   // Process textures
 358   ProcessCreateQueue(mCreateTextureQueue);
 359
 360   // Process buffers
 361   ProcessCreateQueue(mCreateBufferQueue);
 362
 363   // Process framebuffers
 364   ProcessCreateQueue(mCreateFramebufferQueue);
 365 }
 366
 367 void EglGraphicsController::ProcessCommandBuffer(const GLES::CommandBuffer& commandBuffer)
 368 {
 369   for(auto& cmd : commandBuffer.GetCommands())
 370   {
 371     // process command
 372     switch(cmd.type)
 373     {
 374       case GLES::CommandType::FLUSH:
 375       {
 376         // Nothing to do here
 377         break;
 378       }
 379       case GLES::CommandType::BIND_TEXTURES:
 380       {
 381         mCurrentContext->BindTextures(cmd.bindTextures.textureBindings);
 382         break;
 383       }
 384       case GLES::CommandType::BIND_VERTEX_BUFFERS:
 385       {
 386         auto& bindings = cmd.bindVertexBuffers.vertexBufferBindings;
 387         mCurrentContext->BindVertexBuffers(bindings);
 388         break;
 389       }
 390       case GLES::CommandType::BIND_UNIFORM_BUFFER:
 391       {
 392         auto& bindings = cmd.bindUniformBuffers;
 393         mCurrentContext->BindUniformBuffers(bindings.uniformBufferBindings, bindings.standaloneUniformsBufferBinding);
 394         break;
 395       }
 396       case GLES::CommandType::BIND_INDEX_BUFFER:
 397       {
 398         mCurrentContext->BindIndexBuffer(cmd.bindIndexBuffer);
 399         break;
 400       }
 401       case GLES::CommandType::BIND_SAMPLERS:
 402       {
 403         break;
 404       }
 405       case GLES::CommandType::BIND_PIPELINE:
 406       {
 407         auto pipeline = static_cast<const GLES::Pipeline*>(cmd.bindPipeline.pipeline);
 408         mCurrentContext->BindPipeline(pipeline);
 409         break;
 410       }
 411       case GLES::CommandType::DRAW:
 412       {
 413         mCurrentContext->Flush(false, cmd.draw);
 414         break;
 415       }
 416       case GLES::CommandType::DRAW_INDEXED:
 417       {
 418         mCurrentContext->Flush(false, cmd.draw);
 419         break;
 420       }
 421       case GLES::CommandType::DRAW_INDEXED_INDIRECT:
 422       {
 423         mCurrentContext->Flush(false, cmd.draw);
 424         break;
 425       }
 426       case GLES::CommandType::SET_SCISSOR: // @todo Consider correcting for orientation here?
 427       {
 428         mGlAbstraction->Scissor(cmd.scissor.region.x, cmd.scissor.region.y, cmd.scissor.region.width, cmd.scissor.region.height);
 429         break;
 430       }
 431       case GLES::CommandType::SET_SCISSOR_TEST:
 432       {
 433         mCurrentContext->SetScissorTestEnabled(cmd.scissorTest.enable);
 434         break;
 435       }
 436       case GLES::CommandType::SET_VIEWPORT: // @todo Consider correcting for orientation here?
 437       {
 438         mGlAbstraction->Viewport(cmd.viewport.region.x, cmd.viewport.region.y, cmd.viewport.region.width, cmd.viewport.region.height);
 439         break;
 440       }
 441
 442       case GLES::CommandType::SET_COLOR_MASK:
 443       {
 444         mCurrentContext->ColorMask(cmd.colorMask.enabled);
 445         break;
 446       }
 447       case GLES::CommandType::CLEAR_STENCIL_BUFFER:
 448       {
 449         mCurrentContext->ClearStencilBuffer();
 450         break;
 451       }
 452       case GLES::CommandType::CLEAR_DEPTH_BUFFER:
 453       {
 454         mCurrentContext->ClearDepthBuffer();
 455         break;
 456       }
 457
 458       case GLES::CommandType::SET_STENCIL_TEST_ENABLE:
 459       {
 460         mCurrentContext->SetStencilTestEnable(cmd.stencilTest.enabled);
 461         break;
 462       }
 463
 464       case GLES::CommandType::SET_STENCIL_FUNC:
 465       {
 466         mCurrentContext->StencilFunc(cmd.stencilFunc.compareOp,
 467                                      cmd.stencilFunc.reference,
 468                                      cmd.stencilFunc.compareMask);
 469         break;
 470       }
 471
 472       case GLES::CommandType::SET_STENCIL_WRITE_MASK:
 473       {
 474         mCurrentContext->StencilMask(cmd.stencilWriteMask.mask);
 475         break;
 476       }
 477
 478       case GLES::CommandType::SET_STENCIL_OP:
 479       {
 480         mCurrentContext->StencilOp(cmd.stencilOp.failOp,
 481                                    cmd.stencilOp.depthFailOp,
 482                                    cmd.stencilOp.passOp);
 483         break;
 484       }
 485
 486       case GLES::CommandType::SET_DEPTH_COMPARE_OP:
 487       {
 488         mCurrentContext->SetDepthCompareOp(cmd.depth.compareOp);
 489         break;
 490       }
 491       case GLES::CommandType::SET_DEPTH_TEST_ENABLE:
 492       {
 493         mCurrentContext->SetDepthTestEnable(cmd.depth.testEnabled);
 494         break;
 495       }
 496       case GLES::CommandType::SET_DEPTH_WRITE_ENABLE:
 497       {
 498         mCurrentContext->SetDepthWriteEnable(cmd.depth.writeEnabled);
 499         break;
 500       }
 501
 502       case GLES::CommandType::BEGIN_RENDERPASS:
 503       {
 504         auto&       renderTarget = *cmd.beginRenderPass.renderTarget;
 505         const auto& targetInfo   = renderTarget.GetCreateInfo();
 506
 507         if(targetInfo.surface)
 508         {
 509           // switch to surface context
 510           mGraphics->ActivateSurfaceContext(static_cast<Dali::RenderSurfaceInterface*>(targetInfo.surface));
 511         }
 512         else if(targetInfo.framebuffer)
 513         {
 514           // switch to resource context
 515           mGraphics->ActivateResourceContext();
 516         }
 517
 518         mCurrentContext->BeginRenderPass(cmd.beginRenderPass);
 519         break;
 520       }
 521       case GLES::CommandType::END_RENDERPASS:
 522       {
 523         mCurrentContext->EndRenderPass();
 524
 525         auto syncObject = const_cast<GLES::SyncObject*>(static_cast<const GLES::SyncObject*>(cmd.endRenderPass.syncObject));
 526         if(syncObject)
 527         {
 528           syncObject->InitializeResource();
 529         }
 530         break;
 531       }
 532       case GLES::CommandType::PRESENT_RENDER_TARGET:
 533       {
 534         ResolvePresentRenderTarget(cmd.presentRenderTarget.targetToPresent);
 535
 536         // push this command buffer to the discard queue
 537         mDiscardCommandBufferQueue.push(const_cast<GLES::CommandBuffer*>(&commandBuffer));
 538         break;
 539       }
 540       case GLES::CommandType::EXECUTE_COMMAND_BUFFERS:
 541       {
 542         // Process secondary command buffers
 543         // todo: check validity of the secondaries
 544         //       there are operations which are illigal to be done
 545         //       within secondaries.
 546         for(auto& buf : cmd.executeCommandBuffers.buffers)
 547         {
 548           ProcessCommandBuffer(*static_cast<const GLES::CommandBuffer*>(buf));
 549         }
 550         break;
 551       }
 552     }
 553   }
 554 }
 555
 556 void EglGraphicsController::ProcessCommandQueues()
 557 {
 558   // TODO: command queue per context, sync between queues should be
 559   // done externally
 560   currentFramebuffer = nullptr;
 561
 562   DUMP_FRAME_START();
 563
 564   while(!mCommandQueue.empty())
 565   {
 566     auto cmdBuf = mCommandQueue.front();
 567     mCommandQueue.pop();
 568     DUMP_FRAME_COMMAND_BUFFER(cmdBuf);
 569     ProcessCommandBuffer(*cmdBuf);
 570   }
 571
 572   DUMP_FRAME_END();
 573 }
 574
 575 void EglGraphicsController::ProcessTextureUpdateQueue()
 576 {
 577   while(!mTextureUpdateRequests.empty())
 578   {
 579     TextureUpdateRequest& request = mTextureUpdateRequests.front();
 580
 581     auto& info   = request.first;
 582     auto& source = request.second;
 583
 584     if(source.sourceType == Graphics::TextureUpdateSourceInfo::Type::MEMORY)
 585     {
 586       // GPU memory must be already allocated.
 587
 588       // Check if it needs conversion
 589       auto*       texture            = static_cast<GLES::Texture*>(info.dstTexture);
 590       const auto& createInfo         = texture->GetCreateInfo();
 591       auto        srcFormat          = GLES::GLTextureFormatType(info.srcFormat).format;
 592       auto        srcType            = GLES::GLTextureFormatType(info.srcFormat).type;
 593       auto        destInternalFormat = GLES::GLTextureFormatType(createInfo.format).internalFormat;
 594       auto        destFormat         = GLES::GLTextureFormatType(createInfo.format).format;
 595
 596       // From render-texture.cpp
 597       const bool isSubImage(info.dstOffset2D.x != 0 || info.dstOffset2D.y != 0 ||
 598                             info.srcExtent2D.width != (createInfo.size.width / (1 << info.level)) ||
 599                             info.srcExtent2D.height != (createInfo.size.height / (1 << info.level)));
 600
 601       auto*                sourceBuffer = reinterpret_cast<uint8_t*>(source.memorySource.memory);
 602       std::vector<uint8_t> tempBuffer;
 603       if(mGlAbstraction->TextureRequiresConverting(srcFormat, destFormat, isSubImage))
 604       {
 605         // Convert RGB to RGBA if necessary.
 606         texture->TryConvertPixelData(source.memorySource.memory, info.srcFormat, createInfo.format, info.srcSize, info.srcExtent2D.width, info.srcExtent2D.height, tempBuffer);
 607         sourceBuffer = &tempBuffer[0];
 608         srcFormat    = destFormat;
 609         srcType      = GLES::GLTextureFormatType(createInfo.format).type;
 610       }
 611
 612       // Calculate the maximum mipmap level for the texture
 613       texture->SetMaxMipMapLevel(std::max(texture->GetMaxMipMapLevel(), info.level));
 614
 615       GLenum bindTarget{GL_TEXTURE_2D};
 616       GLenum target{GL_TEXTURE_2D};
 617
 618       if(createInfo.textureType == Graphics::TextureType::TEXTURE_CUBEMAP)
 619       {
 620         bindTarget = GL_TEXTURE_CUBE_MAP;
 621         target     = GL_TEXTURE_CUBE_MAP_POSITIVE_X + info.layer;
 622       }
 623
 624       mGlAbstraction->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
 625       mCurrentContext->BindTexture(bindTarget, texture->GetTextureTypeId(), texture->GetGLTexture());
 626
 627       if(!isSubImage)
 628       {
 629         if(!texture->IsCompressed())
 630         {
 631           mGlAbstraction->TexImage2D(target,
 632                                      info.level,
 633                                      destInternalFormat,
 634                                      info.srcExtent2D.width,
 635                                      info.srcExtent2D.height,
 636                                      0,
 637                                      srcFormat,
 638                                      srcType,
 639                                      sourceBuffer);
 640         }
 641         else
 642         {
 643           mGlAbstraction->CompressedTexImage2D(target,
 644                                                info.level,
 645                                                destInternalFormat,
 646                                                info.srcExtent2D.width,
 647                                                info.srcExtent2D.height,
 648                                                0,
 649                                                info.srcSize,
 650                                                sourceBuffer);
 651         }
 652       }
 653       else
 654       {
 655         if(!texture->IsCompressed())
 656         {
 657           mGlAbstraction->TexSubImage2D(target,
 658                                         info.level,
 659                                         info.dstOffset2D.x,
 660                                         info.dstOffset2D.y,
 661                                         info.srcExtent2D.width,
 662                                         info.srcExtent2D.height,
 663                                         srcFormat,
 664                                         srcType,
 665                                         sourceBuffer);
 666         }
 667         else
 668         {
 669           mGlAbstraction->CompressedTexSubImage2D(target,
 670                                                   info.level,
 671                                                   info.dstOffset2D.x,
 672                                                   info.dstOffset2D.y,
 673                                                   info.srcExtent2D.width,
 674                                                   info.srcExtent2D.height,
 675                                                   srcFormat,
 676                                                   info.srcSize,
 677                                                   sourceBuffer);
 678         }
 679       }
 680       // free staging memory
 681       free(source.memorySource.memory);
 682     }
 683     else
 684     {
 685       // TODO: other sources
 686     }
 687
 688     mTextureUpdateRequests.pop();
 689   }
 690 }
 691
 692 void EglGraphicsController::UpdateTextures(const std::vector<TextureUpdateInfo>&       updateInfoList,
 693                                            const std::vector<TextureUpdateSourceInfo>& sourceList)
 694 {
 695   // Store updates
 696   for(auto& info : updateInfoList)
 697   {
 698     mTextureUpdateRequests.push(std::make_pair(info, sourceList[info.srcReference]));
 699     auto& pair = mTextureUpdateRequests.back();
 700     switch(pair.second.sourceType)
 701     {
 702       case Graphics::TextureUpdateSourceInfo::Type::MEMORY:
 703       {
 704         auto& info   = pair.first;
 705         auto& source = pair.second;
 706
 707         // allocate staging memory and copy the data
 708         // TODO: using PBO with GLES3, this is just naive
 709         // oldschool way
 710
 711         char* stagingBuffer = reinterpret_cast<char*>(malloc(info.srcSize));
 712         std::copy(&reinterpret_cast<char*>(source.memorySource.memory)[info.srcOffset],
 713                   reinterpret_cast<char*>(source.memorySource.memory) + info.srcSize,
 714                   stagingBuffer);
 715
 716         mTextureUploadTotalCPUMemoryUsed += info.srcSize;
 717
 718         // store staging buffer
 719         source.memorySource.memory = stagingBuffer;
 720         break;
 721       }
 722       case Graphics::TextureUpdateSourceInfo::Type::BUFFER:
 723       {
 724         // TODO, with PBO support
 725         break;
 726       }
 727       case Graphics::TextureUpdateSourceInfo::Type::TEXTURE:
 728       {
 729         // TODO texture 2 texture in-GPU copy
 730         break;
 731       }
 732     }
 733   }
 734
 735   // If upload buffer exceeds maximum size, flush.
 736   if(mTextureUploadTotalCPUMemoryUsed > TEXTURE_UPLOAD_MAX_BUFER_SIZE_MB * 1024)
 737   {
 738     Flush();
 739     mTextureUploadTotalCPUMemoryUsed = 0;
 740   }
 741 }
 742
 743 void EglGraphicsController::ProcessTextureMipmapGenerationQueue()
 744 {
 745   while(!mTextureMipmapGenerationRequests.empty())
 746   {
 747     auto* texture = mTextureMipmapGenerationRequests.front();
 748
 749     mCurrentContext->BindTexture(texture->GetGlTarget(), texture->GetTextureTypeId(), texture->GetGLTexture());
 750     mCurrentContext->GenerateMipmap(texture->GetGlTarget());
 751
 752     mTextureMipmapGenerationRequests.pop();
 753   }
 754 }
 755
 756 void EglGraphicsController::GenerateTextureMipmaps(const Graphics::Texture& texture)
 757 {
 758   mTextureMipmapGenerationRequests.push(static_cast<const GLES::Texture*>(&texture));
 759 }
 760
 761 Graphics::UniquePtr<Memory> EglGraphicsController::MapBufferRange(const MapBufferInfo& mapInfo)
 762 {
 763   mGraphics->ActivateResourceContext();
 764
 765   // Mapping buffer requires the object to be created NOW
 766   // Workaround - flush now, otherwise there will be given a staging buffer
 767   // in case when the buffer is not there yet
 768   ProcessCreateQueues();
 769
 770   if(GetGLESVersion() < GLES::GLESVersion::GLES_30)
 771   {
 772     return Graphics::UniquePtr<Memory>(new GLES::Memory2(mapInfo, *this));
 773   }
 774   else
 775   {
 776     return Graphics::UniquePtr<Memory>(new GLES::Memory3(mapInfo, *this));
 777   }
 778 }
 779
 780 bool EglGraphicsController::GetProgramParameter(Graphics::Program& program, uint32_t parameterId, void* outData)
 781 {
 782   return static_cast<GLES::Program*>(&program)->GetImplementation()->GetParameter(parameterId, outData);
 783 }
 784
 785 GLES::PipelineCache& EglGraphicsController::GetPipelineCache() const
 786 {
 787   return *mPipelineCache;
 788 }
 789
 790 } // namespace Dali::Graphics