What I need to know is how to:

 

  -use multiple different textures at the same time for each itemstack of my item

  -change these textures while the game is running without any performance issues like refreshresources

 

ex:

      itemStack1 renders with itemTextureA

      itemStack2 renders with itemTextureB

      itemStack3 renders with itemTextureC

      ...

      ...

      ...

      Changed itemStack1 to render with itemTextureD

 

I remember this was sorta possible before, but is it still possible in 1.8+? Would modelbakery work? Maybe something with a BufferedImage?

Items have models, not textures. Models can have one or more textures.

 

How to achieve this depends on exactly what you want.

 

In preInit, call

ModelBakery.registerItemVariants

with the model location to tell Minecraft to load your models and then call

ModelLoader.setCustomModelResourceLocation

(for metadata-based models) or

ModeLoader.setCustomMeshDefinition

(for any

ItemStack

to model mapping) to tell Minecraft which models to use for your item.

 

If your models and textures already exist as files in your mod's JAR, this is all you need.

 

If you need to generate models at runtime, you'll probably need to look at

ICustomModelLoader

,

IModel

and

ISmartItemModel

. I can't help you much with them myself, but they've been discussed here and on other sites before and Forge has some examples itself.

 

Generating textures at runtime may be trickier, I don't know how you'd achieve that.

Thanks, will try this out later today...

In preInit, call

ModelBakery.registerItemVariants

This is not needed if you use

setCustomModelResourceLocation

.

 

Ah, I forgot about that. I rarely use

setCustomModelResourceLocation

myself, since I don't have many metadata-based item models.