일단 관련 자료들을 검색중이다.
https://www.html5gamedevs.com/topic/33044-pixi-sprites-are-blurry-on-mobile-devices/
https://www.html5gamedevs.com/topic/42955-solved-how-to-scale-the-pixijs-view-without-making-the-game-blurry/
https://bleepcoder.com/pixi-js/579640185/i-want-to-make-a-responsive-screen-like-a-demo
https://www.html5gamedevs.com/topic/26880-blurry-text-in-pixijs/
https://github.com/pixijs/pixijs/issues/6380