I would recommend the "Mounts of Mayhem Backport" mod instead of "Backported Spears" as it doesn't have this compatibility issue with Flerovium and eliminates the need for this resource pack.
You can find the mod here: https://www.curseforge.com/minecraft/mc-mods/mounts-of-mayhem-backport
When using Backported Spears with Flerovium, the spear textures appear incorrectly in the hotbar and inventory.
This pack aims to provide a workaround to partly fix this issue.
There are 2 options, 1 uses only the in-hand textures for spears in the inventory and in the player hand, the other uses the inventory textures instead.
Since this pack only modifies the .json item model files, it should be compatible with any resource pack that changes spear textures.
Option 1 (hand):
Renders the longer spear in the inventory.
Drawback: not pixel-consistent. Looks too zoomed out.
Option 2 (gui):
Renders the smaller inventory spear in the player's hand.
Drawback: half of the spear is cut off in 3rd person.
Mod Links:
