This type of render target represents an array of textures.
[example:webgl2_rendertarget_texture2darray WebGL 2 / render target / array]
[page:Number width] - the width of the render target, in pixels. Default is `1`.
[page:Number height] - the height of the render target, in pixels. Default is `1`.
[page:Number depth] - the depth/layer count of the render target. Default is `1`.
Creates a new [name].
The depth of the render target.
The texture property is overwritten with an instance of [page:DataArrayTexture].
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]