Exporting and importing does not give the same texture.

I have use tons of models from mixamo.com (FBX). I use FBXLoader and it loads correctly. When I try exporting it via GLTFExporter and then load it using GLTFLoader the texture seems to have change. Below is the snapshot of both the original FBX model and the exported GLB model.

Note that the scene (lighting, etc) did not change at all. Below is my function that handle the file upload by the user.

beforeUpload: (file: File) => {
      const { name } = file;
      const isFBX = name.match(/\.(fbx)$/);
      const isGLB = name.match(/\.(gltf|glb)$/);
      const isEitherFBXorGLB = isFBX || isGLB;

      setFilename(name);
      if (isEitherFBXorGLB) {
        const path = URL.createObjectURL(file);
        const loader = isFBX ? new FBXLoader() : new GLTFLoader();
        loader.setCrossOrigin('anonymous');

        if (loader instanceof GLTFLoader) {
          const dracoLoader = new DRACOLoader();
          const ktx2Loader = new KTX2Loader();
          dracoLoader.setDecoderPath( '/examples/js/libs/draco/' );
          ktx2Loader.setTranscoderPath( 'examples/js/libs/basis/' );
          loader.setDRACOLoader(dracoLoader);
          loader.setKTX2Loader(ktx2Loader.detectSupport(renderer.current));
        }

        loader.load(
          path,
          (gltf) => {
            console.log(gltf);
            if (isFBX) setModel(gltf as Group);
            if (isGLB) setModel((gltf as GLTF).scene);
            if (gltf.animations) setAnimationClips(gltf.animations);
          },
          (event) => setModelLoaded((event.loaded / event.total) * 100),
          (error) => {
            console.error(error);
          },
        );
      }

      return false;
    },

Things to take note 1) I dont see any issue when the original file is already in .glb to begin with. 2) When I try to export FBX to GLB, I got this warning from my console 3) My exporter function is exactly the same as the one shown in threeJS documentation.

donmccurdy / three-gltf-viewer

Exporting and importing does not give the same texture. #310