isSameShader(firstShader, secondShader) {
        return firstShader.localeCompare(secondShader) === 0;
    }
Compare two shaders strings to detect whether they are equal or not

     params:
     @firstShader (string): shader code
     @secondShader (string): shader code

     returns:
     @isSameShader (bool): whether both shaders are equal or not
*