void mostrarTexto(const char *str, float posX, float posY, float color[4], void *font)
{
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
	glLoadIdentity();
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();
	glOrtho(0, m_width, 0, m_heigth, -1.0, 1.0f);
	glPushAttrib(GL_CURRENT_BIT);
	glColor4fv(color);
	glRasterPos2i(posX, posY);
	while (*str)
	{
		glutBitmapCharacter(font, *str);
		++str;
	}
	glPopAttrib();
	glPopMatrix();
	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
}