text: //
  // Copyright (c) 2008-2019 the Urho3D project.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  
  #pragma once
  
  #include "../Container/Ptr.h"
  #include "../Graphics/RenderSurface.h"
  #include "../Graphics/Texture.h"
  #include "../Resource/Image.h"
  
  namespace Craft
  {
  
  /// 3D texture resource.
  class CRAFT_API Texture3D : public Texture
  {
      CRAFT_OBJECT(Texture3D, Texture);
  
  public:
      /// Construct.
      explicit Texture3D(Context* context);
      /// Destruct.
      ~Texture3D() override;
      /// Register object factory.
      static void RegisterObject(Context* context);
  
      /// Load resource from stream. May be called from a worker thread. Return true if successful.
      bool BeginLoad(Deserializer& source) override;
      /// Finish resource loading. Always called from the main thread. Return true if successful.
      bool EndLoad() override;
      /// Mark the GPU resource destroyed on context destruction.
      void OnDeviceLost() override;
      /// Recreate the GPU resource and restore data if applicable.
      void OnDeviceReset() override;
      /// Release the texture.
      void Release() override;
  
      /// Set size, format and usage. Zero size will follow application window size. Return true if successful.
      bool SetSize(int width, int height, int depth, unsigned format, TextureUsage usage = TEXTURE_STATIC);
      /// Set data either partially or fully on a mip level. Return true if successful.
      bool SetData(unsigned level, int x, int y, int z, int width, int height, int depth, const void* data);
      /// Set data from an image. Return true if successful. Optionally make a single channel image alpha-only.
      bool SetData(Image* image, bool useAlpha = false);
  
      /// Get data from a mip level. The destination buffer must be big enough. Return true if successful.
      bool GetData(unsigned level, void* dest) const;
  
  protected:
      /// Create the GPU texture.
      bool Create() override;
  
  private:
      /// Image file acquired during BeginLoad.
      SharedPtr<Image> loadImage_;
      /// Parameter file acquired during BeginLoad.
      SharedPtr<XMLFile> loadParameters_;
  };
  
  }
  