/*
 * opengl interface (only mesa supported yet)
 */

#ifndef GL_INT_H
#define GL_INT_H 

#if HAVE_OPENGL

#include <GL/glx.h>

#include "attr.h"
#include "matrix.h"

using namespace std;

class gl_int : public gfx_int {
	Display *dpy;
	XVisualInfo *vi;
	XSetWindowAttributes swa;  
	Window win;
	GLXContext cx;
	bool in_begin;
        int fb_depth; // bytes of framebuffer, right now
        int fb_format; // GL_RGB or GL_RGBA
	
//	vec last_pos;
	double x1, y1, z1, x2, y2, z2;
	
	void clip (const vec &v) t_no;
	void check_attrs (const attribute_set &attr) t_err;
public:
	gl_int () t_no;
	~gl_int () t_no;
	
	void begin_fig () t_no;
	void end_fig () t_no;
	
	void segment (const point &a, const point &b) t_err;
	void object (const points &v) t_err;
};

#endif

#endif