bɪkˈʌz ðɪs ɪz pɚfˈɔːɹmd ˌɔn ɐ pˈɪksəl baɪ pˈɪksəl bˈeɪsɪs, ðɪ ˈɪmɪdʒ dʌznˌɑːt ɹᵻsˈiːv ðə bˈɛnɪfˌɪts ʌv mˈʌltaɪsˈæmplɪŋ ˈɔːl ʌvðə mˌʌltɪsˈæmpəlz ɪn ɐ pˈɪksəl ɑːɹ dɪskˈɑːɹdᵻd bˈeɪst ɔnðɪ ˈælfə tˈɛst fɔːɹ ðiːz pˈɪksəlz.
Because this is performed on a pixel by pixel basis, the image does not receive the benefits of multi-sampling (all of the multisamples in a pixel are discarded based on the alpha test) for these pixels.