am 3b4d68a2: Merge "Remove gamma correction from color correction shader" into mnc-dev

            // un-premultiply if needed before linearization

            fs << "gl_FragColor.rgb = gl_FragColor.rgb/gl_FragColor.a;";

        }

        fs << "gl_FragColor.rgb = pow(gl_FragColor.rgb, vec3(2.2));";

        fs << "vec4 transformed = colorMatrix * vec4(gl_FragColor.rgb, 1);";

        fs << "gl_FragColor.rgb = transformed.rgb/transformed.a;";

        fs << "gl_FragColor.rgb = pow(gl_FragColor.rgb, vec3(1.0 / 2.2));";

        if (!needs.isOpaque() && needs.isPremultiplied()) {

            // and re-premultiply if needed after gamma correction

            fs << "gl_FragColor.rgb = gl_FragColor.rgb*gl_FragColor.a;";