3D model seems have some mesh or materials cannot disable

Questions
1

It is a glb 3D object, but it has some maybe is mesh on the model. I use some glb viewer this bug is disaper, anyone know how fix?

screen cap
screen cap1920×951 59 KB

2

Is this the z-fighting? I guess…not sure

The reason is that there are some coincident planes.

Solution

  1. set a bigger camera’s near
  2. set up the polygonOffset、polygonOffsetFactor and polygonOffsetUnits attributes of Material
4

Yes I fixed it
const renderer = new THREE.WebGLRenderer({logarithmicDepthBuffer:true});
thanks for you help