normal chanel texture transformation is ignored

Describe the bug

hi my gltf contains a texture transformation for the normals chanel.

  "materials": [
    {
      "name": "Material_0",
      "normalTexture": {
        "extensions": {
          "KHR_texture_transform": {
            "scale": [
              0.1,
              0.1
            ]
          }
        },
        "index": 1
      },

the transformation is ignored by Three.js editor my normals map contains a white polygon. see snapshots from from Three.js (wrong) and khronos viewer (correct) normals polygon is marked with red after snapshot, I attached the gltf inside a zip file. please advise To Reproduce

Steps to reproduce the behavior:

1. open https://threejs.org/editor/
2. import attached rectangle.gltf (extracted from rectangle.zip)
3. in the scene dialog, double click rectangle.gltf
4. in the Environment, select MODELVIEWER
5. ERROR - The normal image should be much larger becase the KHR_texture_transform scale is 0.1

Code

// code goes here

Live example

• jsfiddle-latest-release
• jsfiddle-dev

Expected behavior Since i was using scale transformation for the normal chanel in the material, i was expecting the normal texture to be much bigger, as viewd in khronos viewer. ד

Screenshots

Rectangle.zip

Platform:

• Device: [Desktop]
• OS: [Windows]
• Browser: [Chrome]
• Three.js version: [dev, r138]

[mrdoob]

I’m currently working on a PR that enables offset-repeat in all maps 🤓

[iuriiiurevich]

I’m currently working on a PR that enables offset-repeat in all maps 🤓

@mrdoob are there any updates on this feature? It would be great to support different offsets-repeats, for example, because glTF already works this way, so GLTFLoader does not work correctly in some cases, which can be misleading (as described in the docs: “UV transforms are supported, with several key limitations … No more than one transform may be used per material”).