dali/internal/render/renderers/pipeline-cache.cpp

   1 /*
   2  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 // CLASS HEADER
  18 #include <dali/internal/render/renderers/pipeline-cache.h>
  19
  20 // INTERNAL INCLUDES
  21 #include <dali/graphics-api/graphics-types.h>
  22 #include <dali/integration-api/debug.h>
  23 #include <dali/internal/render/common/render-instruction.h>
  24 #include <dali/internal/render/renderers/render-renderer.h>
  25 #include <dali/internal/render/renderers/render-vertex-buffer.h>
  26 #include <dali/internal/render/shaders/program.h>
  27
  28 namespace Dali::Internal::Render
  29 {
  30 namespace
  31 {
  32 constexpr uint32_t CACHE_CLEAN_FRAME_COUNT = 600; // 60fps * 10sec
  33
  34 // Helper to get the vertex input format
  35 Dali::Graphics::VertexInputFormat GetPropertyVertexFormat(Property::Type propertyType)
  36 {
  37   Dali::Graphics::VertexInputFormat type{};
  38
  39   switch(propertyType)
  40   {
  41     case Property::BOOLEAN:
  42     {
  43       type = Dali::Graphics::VertexInputFormat::UNDEFINED; // type = GL_BYTE; @todo new type for this?
  44       break;
  45     }
  46     case Property::INTEGER:
  47     {
  48       type = Dali::Graphics::VertexInputFormat::INTEGER; // (short)
  49       break;
  50     }
  51     case Property::FLOAT:
  52     {
  53       type = Dali::Graphics::VertexInputFormat::FLOAT;
  54       break;
  55     }
  56     case Property::VECTOR2:
  57     {
  58       type = Dali::Graphics::VertexInputFormat::FVECTOR2;
  59       break;
  60     }
  61     case Property::VECTOR3:
  62     {
  63       type = Dali::Graphics::VertexInputFormat::FVECTOR3;
  64       break;
  65     }
  66     case Property::VECTOR4:
  67     {
  68       type = Dali::Graphics::VertexInputFormat::FVECTOR4;
  69       break;
  70     }
  71     default:
  72     {
  73       type = Dali::Graphics::VertexInputFormat::UNDEFINED;
  74     }
  75   }
  76
  77   return type;
  78 }
  79
  80 constexpr Graphics::CullMode ConvertCullFace(Dali::FaceCullingMode::Type mode)
  81 {
  82   switch(mode)
  83   {
  84     case Dali::FaceCullingMode::NONE:
  85     {
  86       return Graphics::CullMode::NONE;
  87     }
  88     case Dali::FaceCullingMode::FRONT:
  89     {
  90       return Graphics::CullMode::FRONT;
  91     }
  92     case Dali::FaceCullingMode::BACK:
  93     {
  94       return Graphics::CullMode::BACK;
  95     }
  96     case Dali::FaceCullingMode::FRONT_AND_BACK:
  97     {
  98       return Graphics::CullMode::FRONT_AND_BACK;
  99     }
 100     default:
 101     {
 102       return Graphics::CullMode::NONE;
 103     }
 104   }
 105 }
 106
 107 constexpr Graphics::BlendFactor ConvertBlendFactor(BlendFactor::Type blendFactor)
 108 {
 109   switch(blendFactor)
 110   {
 111     case BlendFactor::ZERO:
 112       return Graphics::BlendFactor::ZERO;
 113     case BlendFactor::ONE:
 114       return Graphics::BlendFactor::ONE;
 115     case BlendFactor::SRC_COLOR:
 116       return Graphics::BlendFactor::SRC_COLOR;
 117     case BlendFactor::ONE_MINUS_SRC_COLOR:
 118       return Graphics::BlendFactor::ONE_MINUS_SRC_COLOR;
 119     case BlendFactor::SRC_ALPHA:
 120       return Graphics::BlendFactor::SRC_ALPHA;
 121     case BlendFactor::ONE_MINUS_SRC_ALPHA:
 122       return Graphics::BlendFactor::ONE_MINUS_SRC_ALPHA;
 123     case BlendFactor::DST_ALPHA:
 124       return Graphics::BlendFactor::DST_ALPHA;
 125     case BlendFactor::ONE_MINUS_DST_ALPHA:
 126       return Graphics::BlendFactor::ONE_MINUS_DST_ALPHA;
 127     case BlendFactor::DST_COLOR:
 128       return Graphics::BlendFactor::DST_COLOR;
 129     case BlendFactor::ONE_MINUS_DST_COLOR:
 130       return Graphics::BlendFactor::ONE_MINUS_DST_COLOR;
 131     case BlendFactor::SRC_ALPHA_SATURATE:
 132       return Graphics::BlendFactor::SRC_ALPHA_SATURATE;
 133     case BlendFactor::CONSTANT_COLOR:
 134       return Graphics::BlendFactor::CONSTANT_COLOR;
 135     case BlendFactor::ONE_MINUS_CONSTANT_COLOR:
 136       return Graphics::BlendFactor::ONE_MINUS_CONSTANT_COLOR;
 137     case BlendFactor::CONSTANT_ALPHA:
 138       return Graphics::BlendFactor::CONSTANT_ALPHA;
 139     case BlendFactor::ONE_MINUS_CONSTANT_ALPHA:
 140       return Graphics::BlendFactor::ONE_MINUS_CONSTANT_ALPHA;
 141     default:
 142       return Graphics::BlendFactor();
 143   }
 144 }
 145
 146 constexpr Graphics::BlendOp ConvertBlendEquation(DevelBlendEquation::Type blendEquation)
 147 {
 148   switch(blendEquation)
 149   {
 150     case DevelBlendEquation::ADD:
 151       return Graphics::BlendOp::ADD;
 152     case DevelBlendEquation::SUBTRACT:
 153       return Graphics::BlendOp::SUBTRACT;
 154     case DevelBlendEquation::REVERSE_SUBTRACT:
 155       return Graphics::BlendOp::REVERSE_SUBTRACT;
 156     case DevelBlendEquation::COLOR:
 157       return Graphics::BlendOp::COLOR;
 158     case DevelBlendEquation::COLOR_BURN:
 159       return Graphics::BlendOp::COLOR_BURN;
 160     case DevelBlendEquation::COLOR_DODGE:
 161       return Graphics::BlendOp::COLOR_DODGE;
 162     case DevelBlendEquation::DARKEN:
 163       return Graphics::BlendOp::DARKEN;
 164     case DevelBlendEquation::DIFFERENCE:
 165       return Graphics::BlendOp::DIFFERENCE;
 166     case DevelBlendEquation::EXCLUSION:
 167       return Graphics::BlendOp::EXCLUSION;
 168     case DevelBlendEquation::HARD_LIGHT:
 169       return Graphics::BlendOp::HARD_LIGHT;
 170     case DevelBlendEquation::HUE:
 171       return Graphics::BlendOp::HUE;
 172     case DevelBlendEquation::LIGHTEN:
 173       return Graphics::BlendOp::LIGHTEN;
 174     case DevelBlendEquation::LUMINOSITY:
 175       return Graphics::BlendOp::LUMINOSITY;
 176     case DevelBlendEquation::MAX:
 177       return Graphics::BlendOp::MAX;
 178     case DevelBlendEquation::MIN:
 179       return Graphics::BlendOp::MIN;
 180     case DevelBlendEquation::MULTIPLY:
 181       return Graphics::BlendOp::MULTIPLY;
 182     case DevelBlendEquation::OVERLAY:
 183       return Graphics::BlendOp::OVERLAY;
 184     case DevelBlendEquation::SATURATION:
 185       return Graphics::BlendOp::SATURATION;
 186     case DevelBlendEquation::SCREEN:
 187       return Graphics::BlendOp::SCREEN;
 188     case DevelBlendEquation::SOFT_LIGHT:
 189       return Graphics::BlendOp::SOFT_LIGHT;
 190   }
 191   return Graphics::BlendOp{};
 192 }
 193 } // namespace
 194
 195 PipelineCacheL0Ptr PipelineCache::GetPipelineCacheL0(std::size_t hash, Program* program, Render::Geometry* geometry)
 196 {
 197   auto it = std::find_if(level0nodes.begin(), level0nodes.end(), [hash, program, geometry](PipelineCacheL0& item) { return ((item.hash == hash && item.program == program && item.geometry == geometry)); });
 198
 199   // Add new node to cache
 200   if(it == level0nodes.end())
 201   {
 202     uint32_t bindingIndex{0u};
 203     auto&    reflection = graphicsController->GetProgramReflection(program->GetGraphicsProgram());
 204
 205     Graphics::VertexInputState vertexInputState{};
 206     uint32_t                   base = 0;
 207
 208     for(auto&& vertexBuffer : geometry->GetVertexBuffers())
 209     {
 210       const VertexBuffer::Format& vertexFormat = *vertexBuffer->GetFormat();
 211
 212       uint32_t                  divisor         = vertexBuffer->GetDivisor();
 213       Graphics::VertexInputRate vertexInputRate = (divisor == 0
 214                                                      ? Graphics::VertexInputRate::PER_VERTEX
 215                                                      : Graphics::VertexInputRate::PER_INSTANCE);
 216
 217       vertexInputState.bufferBindings.emplace_back(vertexFormat.size, // stride
 218                                                    vertexInputRate);
 219       //@todo Add the actual rate to the graphics struct
 220
 221       const uint32_t attributeCount          = vertexBuffer->GetAttributeCount();
 222       uint32_t       lastBoundAttributeIndex = 0;
 223       for(uint32_t i = 0; i < attributeCount; ++i)
 224       {
 225         auto    attributeName = vertexBuffer->GetAttributeName(i);
 226         int32_t pLocation     = reflection.GetVertexAttributeLocation(std::string(attributeName.GetStringView()));
 227         if(-1 != pLocation)
 228         {
 229           auto location = static_cast<uint32_t>(pLocation);
 230           vertexInputState.attributes.emplace_back(location,
 231                                                    bindingIndex,
 232                                                    vertexFormat.components[i].offset,
 233                                                    GetPropertyVertexFormat(vertexFormat.components[i].type));
 234           ++lastBoundAttributeIndex;
 235         }
 236         else
 237         {
 238           DALI_LOG_WARNING("Attribute not found in the shader: %s\n", attributeName.GetCString());
 239           // Don't bind unused attributes.
 240         }
 241       }
 242       base += lastBoundAttributeIndex;
 243       ++bindingIndex;
 244     }
 245     PipelineCacheL0 level0;
 246     level0.hash       = hash;
 247     level0.program    = program;
 248     level0.geometry   = geometry;
 249     level0.inputState = vertexInputState;
 250
 251     it = level0nodes.insert(level0nodes.end(), std::move(level0));
 252   }
 253
 254   return it;
 255 }
 256
 257 PipelineCacheL1Ptr PipelineCacheL0::GetPipelineCacheL1(Render::Renderer* renderer, bool usingReflection)
 258 {
 259   // hash must be collision free
 260   uint32_t hash = 0;
 261   auto     topo = (uint32_t(geometry->GetTopology()) & 0xffu);
 262   auto     cull = (uint32_t(renderer->GetFaceCullMode()) & 0xffu);
 263
 264   static const Graphics::PolygonMode polyTable[] = {
 265     Graphics::PolygonMode::POINT,
 266     Graphics::PolygonMode::LINE,
 267     Graphics::PolygonMode::LINE,
 268     Graphics::PolygonMode::LINE,
 269     Graphics::PolygonMode::FILL,
 270     Graphics::PolygonMode::FILL,
 271     Graphics::PolygonMode::FILL};
 272
 273   auto poly = polyTable[topo];
 274
 275   static const FaceCullingMode::Type adjFaceCullingMode[4] =
 276     {
 277       FaceCullingMode::NONE,
 278       FaceCullingMode::BACK,
 279       FaceCullingMode::FRONT,
 280       FaceCullingMode::FRONT_AND_BACK,
 281     };
 282
 283   static const FaceCullingMode::Type normalFaceCullingMode[4] =
 284     {
 285       FaceCullingMode::NONE,
 286       FaceCullingMode::FRONT,
 287       FaceCullingMode::BACK,
 288       FaceCullingMode::FRONT_AND_BACK,
 289     };
 290
 291   static const FaceCullingMode::Type* cullModeTable[2] = {
 292     normalFaceCullingMode,
 293     adjFaceCullingMode};
 294
 295   // Retrieve cull mode
 296   auto cullModeTableIndex = uint32_t(usingReflection) & 1u;
 297   cull                    = cullModeTable[cullModeTableIndex][renderer->GetFaceCullMode()];
 298
 299   hash = (topo & 0xffu) | ((cull << 8u) & 0xff00u) | ((uint32_t(poly) << 16u) & 0xff0000u);
 300
 301   // If L1 not found by hash, create rasterization state describing pipeline and store it
 302   auto it = std::find_if(level1nodes.begin(), level1nodes.end(), [hash](PipelineCacheL1& item) { return item.hashCode == hash; });
 303
 304   if(it == level1nodes.end())
 305   {
 306     PipelineCacheL1 item;
 307     item.hashCode       = hash;
 308     item.rs.cullMode    = ConvertCullFace(FaceCullingMode::Type(cull));
 309     item.rs.frontFace   = Graphics::FrontFace::COUNTER_CLOCKWISE;
 310     item.rs.polygonMode = poly; // not in use
 311     item.ia.topology    = geometry->GetTopology();
 312
 313     it = level1nodes.insert(level1nodes.end(), std::move(item));
 314   }
 315
 316   return it;
 317 }
 318
 319 void PipelineCacheL0::ClearUnusedCache()
 320 {
 321   for(auto iter = level1nodes.begin(); iter != level1nodes.end();)
 322   {
 323     if(iter->ClearUnusedCache())
 324     {
 325       iter = level1nodes.erase(iter);
 326     }
 327     else
 328     {
 329       iter++;
 330     }
 331   }
 332 }
 333
 334 PipelineCacheL2Ptr PipelineCacheL1::GetPipelineCacheL2(bool blend, bool premul, BlendingOptions& blendingOptions)
 335 {
 336   // early out
 337   if(!blend)
 338   {
 339     if(DALI_UNLIKELY(noBlends.empty()))
 340     {
 341       noBlends.emplace_back(PipelineCacheL2{});
 342     }
 343
 344     auto& noBlend = *noBlends.begin();
 345
 346     if(noBlend.pipeline == nullptr)
 347     {
 348       // reset all before returning if pipeline has never been created for that case
 349       noBlend.hash = 0;
 350       memset(&noBlend.colorBlendState, 0, sizeof(Graphics::ColorBlendState));
 351     }
 352     return noBlends.begin();
 353   }
 354
 355   auto bitmask = uint32_t(blendingOptions.GetBitmask());
 356
 357   // Find by bitmask (L2 entries must be sorted by bitmask)
 358   auto it = std::find_if(level2nodes.begin(), level2nodes.end(), [bitmask](PipelineCacheL2& item) { return item.hash == bitmask; });
 359
 360   // TODO: find better way of blend constants lookup
 361   PipelineCacheL2Ptr retval = level2nodes.end();
 362   if(it != level2nodes.end())
 363   {
 364     bool hasBlendColor = blendingOptions.GetBlendColor();
 365     while(hasBlendColor && it != level2nodes.end() && (*it).hash == bitmask)
 366     {
 367       Vector4 v(it->colorBlendState.blendConstants);
 368       if(v == *blendingOptions.GetBlendColor())
 369       {
 370         retval = it;
 371       }
 372       ++it;
 373     }
 374     if(!hasBlendColor)
 375     {
 376       retval = it;
 377     }
 378   }
 379
 380   if(retval == level2nodes.end())
 381   {
 382     // create new entry and return it with null pipeline
 383     PipelineCacheL2 l2{};
 384     l2.pipeline           = nullptr;
 385     auto& colorBlendState = l2.colorBlendState;
 386     colorBlendState.SetBlendEnable(true);
 387     Graphics::BlendOp rgbOp   = ConvertBlendEquation(blendingOptions.GetBlendEquationRgb());
 388     Graphics::BlendOp alphaOp = ConvertBlendEquation(blendingOptions.GetBlendEquationAlpha());
 389     if(blendingOptions.IsAdvancedBlendEquationApplied() && premul)
 390     {
 391       if(rgbOp != alphaOp)
 392       {
 393         DALI_LOG_ERROR("Advanced Blend Equation MUST be applied by using BlendEquation.\n");
 394         alphaOp = rgbOp;
 395       }
 396     }
 397
 398     colorBlendState
 399       .SetSrcColorBlendFactor(ConvertBlendFactor(blendingOptions.GetBlendSrcFactorRgb()))
 400       .SetSrcAlphaBlendFactor(ConvertBlendFactor(blendingOptions.GetBlendSrcFactorAlpha()))
 401       .SetDstColorBlendFactor(ConvertBlendFactor(blendingOptions.GetBlendDestFactorRgb()))
 402       .SetDstAlphaBlendFactor(ConvertBlendFactor(blendingOptions.GetBlendDestFactorAlpha()))
 403       .SetColorBlendOp(rgbOp)
 404       .SetAlphaBlendOp(alphaOp);
 405
 406     // Blend color is optional and rarely used
 407     auto* blendColor = const_cast<Vector4*>(blendingOptions.GetBlendColor());
 408     if(blendColor)
 409     {
 410       colorBlendState.SetBlendConstants(blendColor->AsFloat());
 411     }
 412
 413     l2.hash = blendingOptions.GetBitmask();
 414
 415     auto upperBound = std::upper_bound(level2nodes.begin(), level2nodes.end(), l2, [](const PipelineCacheL2& lhs, const PipelineCacheL2& rhs) { return lhs.hash < rhs.hash; });
 416
 417     level2nodes.insert(upperBound, std::move(l2));
 418
 419     // run same function to retrieve retval
 420     retval = GetPipelineCacheL2(blend, premul, blendingOptions);
 421   }
 422
 423   return retval;
 424 }
 425
 426 bool PipelineCacheL1::ClearUnusedCache()
 427 {
 428   for(auto iter = level2nodes.begin(); iter != level2nodes.end();)
 429   {
 430     if(iter->referenceCount == 0)
 431     {
 432       iter = level2nodes.erase(iter);
 433     }
 434     else
 435     {
 436       iter++;
 437     }
 438   }
 439
 440   if(!noBlends.empty() && noBlends.begin()->referenceCount > 0)
 441   {
 442     return false;
 443   }
 444
 445   return level2nodes.empty();
 446 }
 447
 448 void PipelineCacheQueryInfo::GenerateHash()
 449 {
 450   // Lightweight hash value generation.
 451   hash = (reinterpret_cast<std::size_t>(program) >> Dali::Log<sizeof(decltype(*program))>::value) ^
 452          (reinterpret_cast<std::size_t>(geometry) >> Dali::Log<sizeof(decltype(*geometry))>::value) ^
 453          ((blendingEnabled ? 1u : 0u) << 0u) ^
 454          ((alphaPremultiplied ? 1u : 0u) << 1u) ^
 455          (static_cast<std::size_t>(geometry->GetTopology()) << 2u) ^
 456          (static_cast<std::size_t>(renderer->GetFaceCullMode()) << 5u) ^
 457          ((cameraUsingReflection ? 1u : 0u) << 8u) ^
 458          (blendingEnabled ? static_cast<std::size_t>(blendingOptions->GetBitmask()) : 0xDA11u);
 459 }
 460
 461 bool PipelineCacheQueryInfo::Equal(const PipelineCacheQueryInfo& lhs, const PipelineCacheQueryInfo& rhs) noexcept
 462 {
 463   // Naive equal check.
 464   const bool ret = (lhs.hash == rhs.hash) && // Check hash value first
 465                    (lhs.program == rhs.program) &&
 466                    (lhs.geometry == rhs.geometry) &&
 467                    (lhs.blendingEnabled == rhs.blendingEnabled) &&
 468                    (lhs.alphaPremultiplied == rhs.alphaPremultiplied) &&
 469                    (lhs.geometry->GetTopology() == rhs.geometry->GetTopology()) &&
 470                    (lhs.renderer->GetFaceCullMode() == rhs.renderer->GetFaceCullMode()) &&
 471                    (lhs.cameraUsingReflection == rhs.cameraUsingReflection) &&
 472                    (!lhs.blendingEnabled ||
 473                     (lhs.blendingOptions->GetBitmask() == rhs.blendingOptions->GetBitmask() &&
 474                      ((lhs.blendingOptions->GetBlendColor() == nullptr && rhs.blendingOptions->GetBlendColor() == nullptr) ||
 475                       (lhs.blendingOptions->GetBlendColor() &&
 476                        rhs.blendingOptions->GetBlendColor() &&
 477                        (*lhs.blendingOptions->GetBlendColor() == *rhs.blendingOptions->GetBlendColor())))));
 478
 479   return ret;
 480 }
 481
 482 PipelineCache::PipelineCache(Graphics::Controller& controller)
 483 : graphicsController(&controller)
 484 {
 485   // Clean up cache first
 486   CleanLatestUsedCache();
 487 }
 488
 489 PipelineResult PipelineCache::GetPipeline(const PipelineCacheQueryInfo& queryInfo, bool createNewIfNotFound)
 490 {
 491   // Seperate branch whether query use blending or not.
 492   const int latestUsedCacheIndex = queryInfo.blendingEnabled ? 0 : 1;
 493
 494   // If we can reuse latest bound pipeline, Fast return.
 495   if(ReuseLatestBoundPipeline(latestUsedCacheIndex, queryInfo))
 496   {
 497     mLatestResult[latestUsedCacheIndex].level2->referenceCount++;
 498     return mLatestResult[latestUsedCacheIndex];
 499   }
 500
 501   auto level0 = GetPipelineCacheL0(queryInfo.hash, queryInfo.program, queryInfo.geometry);
 502   auto level1 = level0->GetPipelineCacheL1(queryInfo.renderer, queryInfo.cameraUsingReflection);
 503
 504   PipelineCachePtr level2 = level1->GetPipelineCacheL2(queryInfo.blendingEnabled, queryInfo.alphaPremultiplied, *queryInfo.blendingOptions);
 505
 506   // Create new pipeline at level2 if requested
 507   if(level2->pipeline == nullptr && createNewIfNotFound)
 508   {
 509     Graphics::ProgramState programState{};
 510     programState.program = &queryInfo.program->GetGraphicsProgram();
 511     // Create the pipeline
 512     Graphics::PipelineCreateInfo createInfo;
 513     createInfo
 514       .SetInputAssemblyState(&level1->ia)
 515       .SetVertexInputState(&level0->inputState)
 516       .SetRasterizationState(&level1->rs)
 517       .SetColorBlendState(&level2->colorBlendState)
 518       .SetProgramState(&programState);
 519
 520     // Store a pipeline per renderer per render (renderer can be owned by multiple nodes,
 521     // and re-drawn in multiple instructions).
 522     level2->pipeline = graphicsController->CreatePipeline(createInfo, nullptr);
 523   }
 524
 525   PipelineResult result{};
 526
 527   result.pipeline = level2->pipeline.get();
 528   result.level2   = level2;
 529
 530   level2->referenceCount++;
 531
 532   // Copy query and result
 533   mLatestQuery[latestUsedCacheIndex]  = queryInfo;
 534   mLatestResult[latestUsedCacheIndex] = result;
 535
 536   return result;
 537 }
 538
 539 bool PipelineCache::ReuseLatestBoundPipeline(const int latestUsedCacheIndex, const PipelineCacheQueryInfo& queryInfo) const
 540 {
 541   return mLatestResult[latestUsedCacheIndex].pipeline != nullptr && PipelineCacheQueryInfo::Equal(queryInfo, mLatestQuery[latestUsedCacheIndex]);
 542 }
 543
 544 void PipelineCache::PreRender()
 545 {
 546   CleanLatestUsedCache();
 547
 548   // We don't need to check this every frame
 549   if(++mFrameCount >= CACHE_CLEAN_FRAME_COUNT)
 550   {
 551     mFrameCount = 0u;
 552     ClearUnusedCache();
 553   }
 554 }
 555
 556 void PipelineCache::ClearUnusedCache()
 557 {
 558   for(auto iter = level0nodes.begin(); iter != level0nodes.end();)
 559   {
 560     iter->ClearUnusedCache();
 561
 562     if(iter->level1nodes.empty())
 563     {
 564       iter = level0nodes.erase(iter);
 565     }
 566     else
 567     {
 568       iter++;
 569     }
 570   }
 571 }
 572
 573 void PipelineCache::ResetPipeline(PipelineCachePtr pipelineCache)
 574 {
 575   // TODO : Can we always assume that pipelineCache input is valid iterator?
 576   pipelineCache->referenceCount--;
 577 }
 578
 579 } // namespace Dali::Internal::Render