Fancier Translucency makes black pixels transparent

[ThisIsBrady]

When Fancier translucency is enabled, fully black, non-transparent pixels on textures turn transparent. It will render correctly in preview and turn transparent in the actual renderer. Only affects RGB value (0, 0, 0).

Fancier Translucency enabled: (Invisible Sheep eye, invisible player head, and artifacts on player's legs)

Fancier Translucency disabled: (Sheep eye and player head is there)

[leMaik]

Pinging @JustinTimeCuber :pray: This is a regression either in #1513 or #1670.

[JustinTimeCuber]

I think this is a 0^0 related issue, I'll fix it this weekend

[leMaik]

This bug can also be easily reproduced with the UNKNOWN texture (sheep are not in Chunky yet).

[JustinTimeCuber]

I pushed a fix on a branch, but I need to test it a bit more.