app_time.h

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#ifndef _APP_TIME_H
#define _APP_TIME_H
 
#include <chrono>
 
#include "glcore.h"
#include "app.h"
#include "text.h"
 
 
 
const int MAX_FRAMES= 6;
 
class AppTime : public App
{
public:
    AppTime( const int width, const int height, const int major= 3, const int minor= 3, const int samples= 0 );
    virtual ~AppTime( );
 
    virtual int init( ) = 0;
    virtual int quit( ) = 0;
 
    virtual int update( const float time, const float delta ) { return 0; }
 
    virtual int render( ) = 0;
 
protected:
    virtual int prerender( );
    virtual int postrender( );
 
    std::chrono::high_resolution_clock::time_point m_cpu_start;
    std::chrono::high_resolution_clock::time_point m_cpu_stop;
    
    GLuint m_time_query[MAX_FRAMES];
    GLint64 m_frame_time;
    int m_frame;
    
    Text m_console;
};
 
 
#endif // _APP_H