GraphicsObject.h

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#pragma once
 
#include <typeinfo>
#include <iostream>
 
#include "Object.h"
 
namespace dyno
{
    /*
     * Base OpenGL object with ID and create/release interface
     */
    class GraphicsObject : public Object
    {
    protected:
        virtual void create() = 0;
        virtual void release() = 0;
 
        virtual bool isValid() const { return id != 0xFFFFFFFF; }
 
    protected:
        GraphicsObject() = default;
        virtual ~GraphicsObject() = default; 
        
        // should be non-copyable
        GraphicsObject(const GraphicsObject&) = delete;
        GraphicsObject& operator = (const GraphicsObject&) = delete;
 
    public:
        unsigned int id = 0xFFFFFFFF;   // GL_INVALID_INDEX
    };
 
    // helper functions
    unsigned int glCheckError_(const char* file, int line);
    #define glCheckError() glCheckError_(__FILE__, __LINE__) 
 
#define GL_OBJECT(T) \
    public: ~T() { if(isValid()) printf("Unreleased resource: %s(%d)\n", #T, id);}
}