text: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #ifndef TNT_FILAMENT_DETAILS_RENDERPRIMITIVE_H
  #define TNT_FILAMENT_DETAILS_RENDERPRIMITIVE_H
  
  #include "components/RenderableManager.h"
  
  #include "details/MaterialInstance.h"
  
  #include <backend/Handle.h>
  
  #include <utils/compiler.h>
  
  namespace filament {
  
  class FEngine;
  class FVertexBuffer;
  class FIndexBuffer;
  class FMorphTargetBuffer;
  class FRenderer;
  
  class FRenderPrimitive {
  public:
      FRenderPrimitive() noexcept = default;
  
      void init(backend::DriverApi& driver, const RenderableManager::Builder::Entry& entry) noexcept;
  
      void set(FEngine& engine, RenderableManager::PrimitiveType type,
              FVertexBuffer* vertices, FIndexBuffer* indices, size_t offset,
              size_t minIndex, size_t maxIndex, size_t count) noexcept;
  
      void set(FEngine& engine, RenderableManager::PrimitiveType type,
              size_t offset, size_t minIndex, size_t maxIndex, size_t count) noexcept;
  
      void set(FMorphTargetBuffer* morphTargetBuffer) noexcept;
  
      // frees driver resources, object becomes invalid
      void terminate(FEngine& engine);
  
      const FMaterialInstance* getMaterialInstance() const noexcept { return mMaterialInstance; }
      backend::Handle<backend::HwRenderPrimitive> getHwHandle() const noexcept { return mHandle; }
      backend::PrimitiveType getPrimitiveType() const noexcept { return mPrimitiveType; }
      AttributeBitset getEnabledAttributes() const noexcept { return mEnabledAttributes; }
      uint16_t getBlendOrder() const noexcept { return mBlendOrder; }
      FMorphTargetBuffer* getMorphTargetBuffer() const noexcept { return mMorphTargetBuffer; }
  
      void setMaterialInstance(FMaterialInstance const* mi) noexcept { mMaterialInstance = mi; }
      void setBlendOrder(uint16_t order) noexcept {
          mBlendOrder = static_cast<uint16_t>(order & 0x7FFF);
      }
  
  private:
      FMaterialInstance const* mMaterialInstance = nullptr;
      backend::Handle<backend::HwRenderPrimitive> mHandle;
      backend::PrimitiveType mPrimitiveType = backend::PrimitiveType::NONE;
      AttributeBitset mEnabledAttributes;
      uint16_t mBlendOrder = 0;
      FMorphTargetBuffer* mMorphTargetBuffer = nullptr;
  };
  
  } // namespace filament
  
  #endif // TNT_FILAMENT_DETAILS_RENDERPRIMITIVE_H
  