What are you trying to do, and what do you expect to happen? Opening a model from recent Minecraft Bedrock samples, like the wolf. They now also include mers textures, which have the TGA format.
New to GeckoLib4 is the ability to animate the textures that your GeoAnimatable objects use. This includes all GeckoLib object types such as entities, blocks, items, etc. NOTE: GeckoLib animated ...