TAPsGlobalGLSLShaderPool.hpp

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/******************************************************************************
TAPsGlobalGLSLShaderPool.hpp

GlobalGLSLShaderPool class (hpp file).

SUKITTI PUNAK   (02/18/2009)
******************************************************************************/
#ifndef TAPs_GLOBAL_GLSL_SHADER_POOL_HPP
#define TAPs_GLOBAL_GLSL_SHADER_POOL_HPP

#include "TAPsGLSLShaderPool.hpp"
#include "../OpenGL/TAPsOpenGLTexturePool.hpp"

BEGIN_NAMESPACE_TAPs__OpenGL

//=============================================================================
class GlobalGLSLShaderPool {
//=============================================================================
public:
    // Member Functions -------------------------------------------------------
    friend std::ostream & operator<< ( std::ostream &output, GlobalGLSLShaderPool const &obj )
    {
        output << obj.StrInfo();
        return output;
    }
    //-------------------------------------------------------------------------
    static bool Init ();
    static bool Clear ();
    //-------------------------------------------------------------------------
    static std::string StrInfo ();
    // Data Members -----------------------------------------------------------
    enum SHADER {
        NONE = 0,                       
        DEFAULT,                        
        DEFAULT_MESH_2DTEXTURE,         
        MINIMUM,                        
        BRICK,                          
        PHONG_ONE_PT_LT,                
        PHONG_ONE_DIR_LT,               
        //PHONG_ONE_PT_LT_AND_ATEX,     //!< Phong's shading with one point light and a texture
    };

    //---------------------------------------------------------------
    static GLSLProgramObject * GetShaderProgram ( enum SHADER shaderName )
    {   
        if ( m_bInitialized )   return m_ShaderProgramList[shaderName];
        return NULL;
    }

    static void SetShaderParameters ( enum SHADER shaderName )//, Parameters );
    {
        switch ( shaderName ) {
            case DEFAULT:
                //SetDefaultShaderStaticParameters();
                break;
            case DEFAULT_MESH_2DTEXTURE:
                SetDefaultMesh2DTextureShaderStaticParameters();
                break;
            case PHONG_ONE_PT_LT:
                //SetPhongOnePtLtShaderStaticParameters();
                break;
            case PHONG_ONE_DIR_LT:
                //SetPhongOneDirLtShaderStaticParameters();
                break;
            case BRICK:
                SetBrickShaderStaticParameters();
                break;
            case MINIMUM:
                break;
        }
    }

    //static void SetBrickShaderDynamicParameters ()// Parameters );

    // For Textures
    //---------------------------------------------------------------
    static GLuint Get2DTextureID ( unsigned int id )
    {   
        return m_TexturePool.Get2DTextureNumber( id );
    }

//=============================================================================
protected:
    // Member Functions -------------------------------------------------------

    // Set static parameters of DEFAULT_MESH_2DTEXTURE Shader
    static void SetDefaultMesh2DTextureShaderStaticParameters ()
    {
        //m_ShaderProgramList[BRICK]->SetUniform3f( "BrickColor", 1.0, 0.3, 0.2);
        //m_ShaderProgramList[BRICK]->SetUniform3f( "MortarColor", 0.85, 0.86, 0.84);
        //m_ShaderProgramList[BRICK]->SetUniform2f( "BrickSize", 0.30, 0.15);
        //m_ShaderProgramList[BRICK]->SetUniform2f( "BrickPct", 0.90, 0.85);
        //m_ShaderProgramList[BRICK]->SetUniform3f( "LightPosition", 0.0, 0.0, 4.0);
    }

    // Set static parameters of BRICK Shader
    static void SetBrickShaderStaticParameters ()
    {
        m_ShaderProgramList[BRICK]->SetUniform3f( "BrickColor", 1.0, 0.3, 0.2);
        m_ShaderProgramList[BRICK]->SetUniform3f( "MortarColor", 0.85, 0.86, 0.84);
        m_ShaderProgramList[BRICK]->SetUniform2f( "BrickSize", 0.30, 0.15);
        m_ShaderProgramList[BRICK]->SetUniform2f( "BrickPct", 0.90, 0.85);
        m_ShaderProgramList[BRICK]->SetUniform3f( "LightPosition", 0.0, 0.0, 4.0);
    }
    // Data Members -----------------------------------------------------------
//=============================================================================
private:
    // Member Functions -------------------------------------------------------
    // Data Members -----------------------------------------------------------
    static const unsigned int   m_NUM_OF_SHADERS        = 32;           
    static const unsigned int   m_NUM_OF_2DTEXTURES     = 8;            
    static const unsigned int   m_NUM_OF_3DTEXTURES     = 4;            
    static GLSLShaderPool       m_ShaderPool;                           
    static GLSLProgramObject *  m_ShaderProgramList[m_NUM_OF_SHADERS];  
    static GLuint               m_GL2DTexList[m_NUM_OF_2DTEXTURES];     
    static GLuint               m_GL3DTexList[m_NUM_OF_3DTEXTURES];     
    static bool                 m_bInitialized;                         
    // For Textures
    static TexturePool          m_TexturePool;                          
//=============================================================================
}; // END CLASS GlobalGLSLShaderPool
//=============================================================================
END_NAMESPACE_TAPs__OpenGL
//-----------------------------------------------------------------------------
// If the class is NOT template, use this
#if !defined( TAPs_USE_EXPORT )
    #include "TAPsGlobalGLSLShaderPool.cpp"
#endif

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