Tessellator tessellator = Tessellator.getInstance();
WorldRenderer worldRenderer = tessellator.getWorldRenderer();
worldRenderer.func_181668_a(7, DefaultVertexFormats.field_181707_g);

worldRenderer.func_181662_b(0.0F - f7, 0.0F - f8, 0.0D).func_181673_a(f2, f5).func_181675_d();
worldRenderer.func_181662_b(f6 - f7, 0.0F - f8, 0.0D).func_181673_a(f3, f5).func_181675_d();
worldRenderer.func_181662_b(f6 - f7, 1.0F - f8, 0.0D).func_181673_a(f3, f4).func_181675_d();
worldRenderer.func_181662_b(0.0F - f7, 1.0F - f8, 0.0D).func_181673_a(f2, f4).func_181675_d();

tessellator.draw();