AbstractVAO.h

Go to the documentation of this file.

/*
  Copyright (C) 2016 Jon Macey

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef ABSTRACTVAO_H_
#define ABSTRACTVAO_H_

#include "Types.h"

namespace ngl
{
//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------

class NGL_DLLEXPORT AbstractVAO
{
  public :
    class VertexData
    {
        public :
          VertexData(size_t _size,const GLfloat &_data, GLenum _mode=GL_STATIC_DRAW ) :
           m_size(_size), m_data(_data), m_mode(_mode){}

        size_t m_size;
        const GLfloat &m_data;
        GLenum m_mode=GL_STATIC_DRAW;
    };

    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    virtual ~AbstractVAO()=default;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    void bind();
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    void unbind();
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    virtual void draw()const =0;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    virtual void setData(const VertexData &_data)=0;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    virtual void removeVAO()=0;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    void setVertexAttributePointer(GLuint _id, GLint _size, GLenum _type, GLsizei _stride, unsigned int _dataOffset, bool _normalise=false );
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    void setNumIndices(size_t _s){m_indicesCount=_s;}
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    virtual GLuint getBufferID(unsigned int _id=0)=0;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    GLenum getMode() const;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    void setMode(const GLenum &_mode);

  protected :
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    AbstractVAO(GLenum _mode=GL_TRIANGLES) ;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    GLenum m_mode=GL_TRIANGLES;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    GLuint m_id=0;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    bool m_bound=false;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    bool m_allocated=false;
    //----------------------------------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------------------------------
    size_t m_indicesCount=0;
};


} // end namespace

#endif