DtHdrBlurShaderGenerator.h

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/******************************************************************************
** Copyright (c) 2020 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
// This file is derived from the HDR NVIDIA gameworks SDK example
//----------------------------------------------------------------------------------
// File:        es3aep-kepler\HDR/BlurShaderGenerator.h
// SDK Version: v2.11 
// Email:       gameworks@nvidia.com
// Site:        http://developer.nvidia.com/
//
// Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//  * Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//  * Neither the name of NVIDIA CORPORATION nor the names of its
//    contributors may be used to endorse or promote products derived
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//
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//----------------------------------------------------------------------------------

#pragma once


// Get proper local export symbol
#include <vrvPostProcessor/vrvPostProcessor.h>

#include <string>

namespace makVrv
{
   class DtGlProgram;

   class DT_DLL_VRVPOSTPROCESSOR DtBlurShaderGenerator
   {
   public:
      DtBlurShaderGenerator();
      virtual ~DtBlurShaderGenerator();
   private:
      DtBlurShaderGenerator(const DtBlurShaderGenerator& rhs) = delete;
      DtBlurShaderGenerator& operator=(const DtBlurShaderGenerator& rhs) = delete;
   public:

      virtual const float* generateGaussianWeightsAndWidth(int& width, float s);

      virtual const float* generateTriangleWeights(int width);

      virtual DtGlProgram* generate1DConvolutionFilterComputeShader(const float* weights, int width, bool vertical, bool tex2D, int imgWidth, int imgHeight
         , bool isMultiview
         , const std::string& preprocessorString
         , const std::string& preAmble);
   protected:
      virtual void deleteWeights(void);

   protected:
      float* myWeights;

   };
}