mgGLFrameBufferObject.h

/********************************************************************/
#ifndef _MGGLFBO_HH_
#define _MGGLFBO_HH_


#include <GL/glew.h>
#include <GL/wglew.h>
#include <mg/MGCL.h>



class MG_DLL_DECLR mgGLFramebufferObject {

// パブリック メソッド
public:
    mgGLFramebufferObject();
    ~mgGLFramebufferObject(){;};
    
    //   幅を返します。
    int getWidth(){ return m_Width; };

    int getHeight(){return m_Height;};

    GLuint getTexName(){return m_textureId;};


    bool CreateBuffer(int width, int height, GLenum format = GL_RGB);

    void ReleaseBuffer();

    void beginRenderTexture();

    void endRenderTexture();

    void CopyRenderTexture(
        GLvoid* pixels  
    );

    Gdiplus::Bitmap* readViewAsBitmap();
    
private:
    
    int m_Width;
    int m_Height;
    GLuint m_pixFormat;
    GLuint m_framebufferId;
    GLuint m_renderbufferId;
    GLuint m_textureId;

    GLint m_oldBufferId;

    GLint m_oldDrawBuf;

};

#endif //_MGGLFBO_HH_