                   vec3 halfColor = color.rgb * aa + texture2D(image, materialInput.st).rgb * (1.0 - aa);
                                    halfColor *= 0.5;
                                    material.diffuse = halfColor;
                                    material.emission = halfColor;
                                    // material.alpha = color.a * aa;
                                    material.alpha = 1.0;
                                    return material;
                               