CShaderProgram.h

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//==============================================================================
/*
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    (www.chai3d.org)

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    \author    <http://www.chai3d.org>
    \author    Francois Conti, Sonny Chan
    \version   3.2.0 $Rev: 2187 $
*/
//==============================================================================

//------------------------------------------------------------------------------
#ifndef CShaderProgramH
#define CShaderProgramH
//------------------------------------------------------------------------------
#include "shaders/CShader.h"
#include "world/CGenericObject.h"
//------------------------------------------------------------------------------
#include <iostream>
#include <map>
#include <vector>
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
namespace chai3d {
//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================

//------------------------------------------------------------------------------
class cShaderProgram;
typedef std::shared_ptr<cShaderProgram> cShaderProgramPtr;
//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================
class cShaderProgram
{
    //--------------------------------------------------------------------------
    // CONSTRUCTOR & DESTRUCTOR:
    //--------------------------------------------------------------------------

public:

    cShaderProgram();

    cShaderProgram(const std::string& a_vertexShader, const std::string& a_fragmentShader);

    virtual ~cShaderProgram();

    static cShaderProgramPtr create() { return (std::make_shared<cShaderProgram>()); }

    static cShaderProgramPtr create(const std::string& a_vertexShader, const std::string& a_fragmentShader) { return (std::make_shared<cShaderProgram>(a_vertexShader, a_fragmentShader)); }


    //--------------------------------------------------------------------------
    // PUBLIC METHODS:
    //--------------------------------------------------------------------------

public:

    void attachShader(cShaderPtr a_shader);

    bool linkProgram();

    void use(cGenericObject* a_object, cRenderOptions& a_options);

    void disable();

    bool isUsed() { return (m_enabled); }

    void bindAttributeLocation(const unsigned int a_index, const char *a_name);

    int getAttributeLocation(const char *a_name);

    int getUniformLocation(const char *a_name);

    GLint getId() { return (m_id); }

    void setGeometryInputType(GLenum a_type) { m_geometryInputType = a_type; }

    void setGeometryOutputType(GLenum a_type) { m_geometryOutputType = a_type; }

    void setGeometryVerticesOut(int a_numVertices) { m_geometryVerticesOut = a_numVertices; }


    //--------------------------------------------------------------------------
    // PUBLIC METHODS: (UNIFORMS)
    //--------------------------------------------------------------------------

public:

    void setUniformi(const char* a_name, const GLint a_value);

    void setUniformf(const char* a_name, const GLfloat a_value);

    void setUniform(const char* a_name, cVector3d& a_value);

    void setUniform(const char* a_name, cMatrix3d& a_value, bool a_transposed);

    void setUniform(const char* a_name, cTransform& a_value, bool a_transposed);

    void setUniformiv(const char* a_name, const GLint *a_values, const int a_count);

    void setUniformfv(const char* a_name, const GLfloat *a_values, const int a_count);


    //--------------------------------------------------------------------------
    // PROTECTED MEMBERS:
    //--------------------------------------------------------------------------

protected:

    GLuint m_id; 

    bool m_linked;

    bool m_enabled;

    GLuint m_shaderCount;

    std::map<std::string, int> m_attributeLocList;

    std::map<std::string, int> m_uniformLocList;

    std::vector<cShaderPtr> m_shaders;

    bool m_geometryShaderAttached;

    GLenum m_geometryInputType;

    GLenum m_geometryOutputType;

    GLint m_geometryVerticesOut;
};

//------------------------------------------------------------------------------
} // namespace chai3d
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
#endif
//------------------------------------------------------------------------------