glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
perspectiveToFrustrum(pers[0], pers[1], pers[2], pers[3]);
glFrustum(frus[0], frus[1], frus[2], frus[3], frus[4], frus[5]);
//glFrustum(frus[0], frus[1], frus[2], frus[3], frus[4] + 300, frus[5]);