generateTextureLod( /* texture, textureProperty, uvSnippet, depthSnippet, levelSnippet */ ) {

		console.warn( 'Abstract function.' );

	}
Generates a texture LOD shader string for the given texture data.

@abstract
@param {Texture} texture - The texture.
@param {string} textureProperty - The texture property name.
@param {string} uvSnippet - Snippet defining the texture coordinates.
@param {?string} depthSnippet - Snippet defining the 0-based texture array index to sample.
@param {string} levelSnippet - Snippet defining the mip level.
@return {string} The generated shader string.