add an option similar to this:
https://play.google.com/store/apps/details?id=com.fastemulator.shaderpack&hl=en_US&referrer=utm_source%3Dgoogle%26utm_medium%3Dorganic%26utm_term%3Demulator+shaders&pcampaignid=APPU_1_dQMRXNHOE4yhwgTv4avwBg
These filters greatly improve the image quality, are even better than anti aliasing