Importing gltf assets

[bvaisman]

Hi everybody,

I have a question about the gltf import. If i import the same gltf asset several times, materials are created several times.

Is it possible to keep the former materials instead of creating them again and again ?

Thanks,

Boris

[kvasss]

Hi. Maybe you don’t need import same file again? Simply save your model in variable and reuse

[bvaisman]

I need to place it in several positions. So i need several copies of my mesh. But maybe i don’t understand exactly what you’re proposing.

[brianzinn]

You can use instancing to have multiple meshes sharing materials. Will also have a performance boost.
Instances | Babylon.js Documentation (babylonjs.com)

[bvaisman]

I thought @brianzinn gave me the solution but it’s a little bit more difficult because my mesh is made with several submeshes and nodes and i cannot find the tree structure anymore.

Here’s the playground : https://playground.babylonjs.com/#3PE956#1

[Blake]

The rotation issue is because the instance doesn’t have the root mesh (__root__) that transforms from right handed to left handed. You can do it manually but it’s easier to use instantiateHierarchy to copy the whole node tree for you, like below.

Babylon.js Playground