FrameBufferGL.h

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/* $Id:$ */

#ifndef __FRAME_BUFFER_GL_H
#define __FRAME_BUFFER_GL_H

#include <gra/framebuffer/FrameBuffer.h>
#include <esg/Definitions.h>
#include <GL/gl.h>

using namespace esg;

namespace gra {

class GRA_EXPORT FrameBufferGL : public FrameBuffer {
public:
    FrameBufferGL(unsigned mode) : FrameBuffer(mode) {}
        
    FrameBufferGL(unsigned width, unsigned height, unsigned mode)
        : FrameBuffer(width, height, mode) { glViewport(0, 0, width, height); }
    
    virtual ~FrameBufferGL() {}

    virtual void showContent() { glFlush(); }

    virtual void setWidth (unsigned);
    virtual void setHeight(unsigned);

    virtual void setColor(const Camera&  /* camera */,
                          unsigned       /* posX   */,
                          unsigned       /* posY   */,
                          float          /* depth  */,
                          const Color3f& /* color  */);
    
    virtual void setColor(const Camera&  /* camera */,
                          unsigned       /* posX   */,
                          unsigned       /* posY   */,
                          const Color3f& /* color  */);

    virtual void setColors(const Camera&    /* camera */,
                           unsigned         /* posX   */,
                           unsigned         /* posY   */,
                           float            /* depth  */,
                           const Color3f [] /* colors */,
                           unsigned         /* size   */);
    
    virtual void setColors(const Camera&    /* camera */,
                           unsigned         /* posX   */,
                           unsigned         /* posY   */,
                           const Color3f [] /* colors */,
                           unsigned         /* size   */);

    virtual Color3f getColor(unsigned /* posX */,
                             unsigned /* posY */) const;

    virtual void clearColor(const Color3f& /* color */);


#if 0    
    virtual int      init      ();
    virtual int      showContent ();
    virtual int      getWidth  () const   = 0;
    virtual int      getHeight () const   = 0;
    virtual int      setWidth  (unsigned) = 0;
    virtual int      setHeight (unsigned) = 0;
    virtual int      setColor  (unsigned, unsigned, const Color3f&);
    virtual Color3f  getColor  (unsigned, unsigned) const { return Color3f(0,0,0); }
    virtual int      setActive ()         = 0;
    virtual int      clear     (const Color3f&);
#endif
};

} // namespace

#endif // __FRAME_BUFFER_GL_H

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