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/*
* Copyright (C) 2005-2022 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* 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 otb_Shader_h
#define otb_Shader_h
#include "OTBIceExport.h"
#include <itkObject.h>
#include <itkPoint.h>
namespace otb
{
class GlView;
class OTBIce_EXPORT Shader
: public itk::Object
{
friend class GlView;
public:
typedef Shader Self;
typedef itk::Object Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
typedef itk::Point<float,2> PointType;
void LoadShader();
virtual void SetupShader();
void UnloadShader();
const std::vector<int> & GetAttribIdx();
protected:
Shader();
~Shader() override;
/** Build the shader sources and fills m_Program */
void BuildShader();
virtual std::string GetVertexSource() const = 0;
virtual std::string GetFragmentSource() const = 0;
virtual std::string GetName() const = 0;
/** Program object in which the shader is compiled and linked (0 if no program) */
unsigned int m_Program;
/** Projection matrix */
const float * m_ProjMatrix;
/** ModelView matrix */
const float * m_ModelViewMatrix;
std::vector<int> m_AttribIdx;
private:
// prevent implementation
Shader(const Self&);
void operator=(const Self&);
}; // End class Shader
} // End namespace otb
#endif
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