The 1.14 update, also known as the "Village & Pillage" update, brought significant changes to how resource packs are handled:
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(specifically Paper 1.14.4) fully supports Minecraft resource packs, but there are some important details:
: Minecraft 1.14 also brought performance improvements that affect how resource packs are loaded and used in the game. This means that players can enjoy a smoother experience even with detailed resource packs.
Adds literal geographic depth to 16x textures. Items like ladders, crafting tables, and rails shift from flat 2D planes into fully modeled 3D objects without dropping your frame rate drastically.