ref: 2e939eac354f07bd26437ccce0fb446c6bbc3b7e
parent: f80ce3e92c2456282282b277fc85e96604d9e6fb
author: Sigrid Solveig Haflínudóttir <sigrid@ftrv.se>
date: Fri Dec 29 22:24:10 EST 2023
alpha: only 0x00000000 is fully transparent; fix the fullbright fighting alpha blending