Draw string

        Tessellator tessellator = Tessellator.instance;
        tessellator.startDrawing(3);
        tessellator.setColorOpaque_I(0);
        byte b2 = 16;

        for (int i = 0; i <= b2; ++i)
        {
            float f12 = (float)i / (float)b2;
            tessellator.addVertex(5 * (double)f12, 2 * (double)(f12 * f12 + f12) * 0.5D + 0.25D, 5 * (double)f12);
        }
        tessellator.draw();