textures and models

Textures & Models

Three texture modes are available:

Mode	Description
default	Uses vanilla iron/wood textures as placeholders
reference	Reuses the model of another item (vanilla or modded)
custom	Uses your own PNG files placed in the ultimatecustomgear/ folder

⚠️ reference creates a hard dependency. The resource locations point at files that belong to another mod, so that mod becomes required for your content to look right. Without it the item shows the missing-texture checkerboard, and a 3D armor model declared this way simply won't render. Vanilla references (minecraft:...) are always safe. If you want your pack to stand on its own, use custom and ship the PNGs inside it.

Reference mode example

{
  "texture": {
    "mode": "reference",
    "refs": {
      "sword": "minecraft:item/netherite_sword"
    }
  }
}

For bows and crossbows, you can optionally include custom pulling/loading frame models:

{
  "texture": {
    "mode": "reference", 
    "refs": {
      "bow":           "othermod:item/epic_bow", 
      "bow_pulling_0": "othermod:item/epic_bow_pulling_0", 
      "bow_pulling_1": "othermod:item/epic_bow_pulling_1", "bow_pulling_2": "othermod:item/epic_bow_pulling_2"
    }
  }
}

Texture Fields

Field	Type	Description
texture.mode	String	default, custom, or reference
texture.refs	Map	For custom: relative path to a PNG inside ultimatecustomgear/. For reference: full resource location
armor_layers	Map	(Armor sets only) layer_1 and layer_2 paths for the in-world armor texture. The special value "transparent" makes the armor invisible when worn (stats and effects intact); in reference mode set both layers
texture.refs.block	String	(Simple blocks) Resource location used for all 6 faces via cube_all
texture.faces	Object	(Blocks only) Per-face texture configuration. Keys: top, bottom, north, south, east, west, side
texture.faces.side	String	Shortcut: applies to north, south, east, west if not individually defined

refs vs faces: refs handles everything — a single texture with the all key ("refs": { "all": "..." }), or per-face textures with the face keys (top, bottom, north, south, east, west, side). faces is a legacy alias that only works for per-face textures. Use refs. (The block key is a legacy alias of all.) Note: all/block only work inside refs, never inside faces.

3D Armor Models (GeckoLib)

With GeckoLib installed, armor can render as a full 3D model when worn — horns, shoulder pads, capes, even animations — instead of the flat vanilla layers.

Model your armor in Blockbench using the GeckoLib Animated Model format, using the standard armor bone names (armorHead, armorBody, armorRightArm, armorLeftArm, armorRightLeg, armorLeftLeg, armorRightBoot, armorLeftBoot), then declare the exported files in texture.armor_3d:

{
  "texture": {
    "mode": "custom", 
    "refs": {
      "helmet": "textures/my_helmet_icon.png", 
      "chestplate": "textures/my_chestplate_icon.png", 
      "leggings": "textures/my_leggings_icon.png", 
      "boots": "textures/my_boots_icon.png"
    }, 
    "armor_layers": {
      "layer_1": "textures/my_armor_layer_1.png",
      "layer_2": "textures/my_armor_layer_2.png"
    }, 
    "armor_3d": {
      "model": "models/my_armor.geo.json",
      "texture": "textures/my_armor_3d.png",
      "animation": "models/my_armor.animation.json"
    }
  }
}

Field	Required	Description
model	Yes	The .geo.json exported from Blockbench
texture	Yes	PNG painted for that model's UV layout (not the item icon, not a layer)
animation	No	.animation.json; without it the model is static

How the three texture systems combine:

Declared	With GeckoLib	Without GeckoLib
armor_layers only	Flat layers	Flat layers
armor_layers + armor_3d	3D model	Flat layers (fallback)
armor_3d only	3D model	Vanilla iron layers
armor_layers: "transparent" + armor_3d	3D model	Invisible armor

Always declare armor_layers alongside armor_3d — it is your safety net for instances without GeckoLib. Declaring only armor_3d will not break anything, but the armor falls back to the vanilla iron layers, which is almost never what you want. refs still controls the inventory icon, which is always 2D. The 3D model replaces the layers when active; they are never drawn together.

Modes: in custom mode the three values are paths to your own files (config folder or pack zips, like every other custom texture). In reference mode they are resource locations of assets shipped by another mod (e.g. "othermod:geo/armor/their_armor.geo.json") — nothing is copied, but that mod becomes required for your armor to render.

GeckoLib is an optional dependency: the mod runs fine without it. 3D rendering is baked at registration — adding or removing armor_3d requires a restart.