MipLevelsTask.h

#pragma once
 
#include "PostProcessTask.h"
 
#include "Rendering/Common.h"
 
namespace Cogs
{
  namespace Core
  {
    struct MipLevelsTask : public PostProcessTask
    {
      virtual ~MipLevelsTask() {}
      virtual void initialize(RenderTaskContext* context) override;
      void initialize(RenderTaskContext * context, const RenderTaskDefinition& taskDefinition);
      void cleanup(RenderTaskContext * context) override;
      void apply(RenderTaskContext * context) override;
 
      ExpressionValue<size_t> firstLevel = 0;
      ExpressionValue<size_t> lastLevel = ~0u;
 
    protected:
      std::vector<glm::ivec2> sizes;
      BufferHandle parameterHandle = BufferHandle::NoHandle;
      ConstantBufferBindingHandle parameterBufferBinding = ConstantBufferBindingHandle::NoHandle;
 
    private:
      void draw(RenderTaskContext * context,
                RenderTarget * renderTarget,
                RenderTexture * targetSource,
                TextureBindingHandle &targetSourceHandle,
                const size_t srcLevel, const size_t dstLevel);
    };
  }
}