Texture.h

/********************************************************************/
/* Copyright (c) 2015 DG Technologies Inc. and Yuzi Mizuno          */
/* All rights reserved.                                             */
/********************************************************************/

#ifndef _mgTexture_HH
#define _mgTexture_HH

#include "mg/MGCL.h"

class MGImage;
class mgGLSLProgram;

// @class mgTexture Texture.h "mgGL/Texture.h"


class MG_DLL_DECLR mgTexture{

public:

    mgTexture(
        GLenum target=GL_TEXTURE_2D
    );

    ~mgTexture();

    void set_sampler(mgGLSLProgram* glsl, const std::string& samplerName);

    const std::string& getDefaultSamplerVariable()const;


    void set_image(
        GLsizei width 
        ,GLsizei height
        ,const GLuint* pixels
        ,bool mutableTexture=true
        ,bool isPointSprite = false
        ,GLint wrap=GL_REPEAT
        ,GLint magminFilter=GL_LINEAR
    );

    void set_image(
        const MGImage& image
        ,bool mutableTexture=true
        ,bool isPointSprite=false
        ,GLint wrap=GL_REPEAT
        ,GLint magminFilter=GL_LINEAR
    );

    void set_textureUnit(int textureUnit){m_textureUnit=textureUnit;};

    GLuint getTextureID()const{return m_textureID;};

    void use()const;

    GLsizei width()const{return m_width;};
    GLsizei height()const{return m_height;};

private:
    GLsizei m_numberOfTextureLevels;//Currently this is set to 1.
    GLsizei m_width, m_height;
    GLenum m_target;

    int m_textureUnit;
    
    GLuint m_textureID;

    mutable int m_samplerLocation;
};
#endif